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Clustering vs Classification: Difference Between Clustering & Classification

Updated on 04 March, 2024

47.9K+ views
18 min read

Machine Learning algorithms are generally categorized based upon the type of output variable and the type of problem that needs to be addressed. These algorithms are broadly divided into three types i.e. Regression, Clustering, and Classification. Regression and Classification are types of supervised learning algorithms while Clustering is a type of unsupervised algorithm.

When the output variable is continuous, then it is a regression problem whereas when it contains discrete values, it is a classification problem. Clustering algorithms are generally used when we need to create the clusters based on the characteristics of the data points. This article aims to give you a quick introduction to clustering and classification, and I’ll also highlight some key differences between the two.

Classification and clustering are the two most important parts of the machine learning algorithm. People often mistake them to be the same, however, even if they appear to be slightly similar processes, the difference between clustering and classification they are not. This article will provide an in-depth understanding of clustering and classification, along with a classification vs clustering comparison and the major difference between classification and clustering. 

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Classification

Classification is a type of supervised machine learning algorithm. For any given input, the classification algorithms help in the prediction of the class of the output variable. There can be multiple types of classifications like binary classification, multi-class classification, etc. It depends upon the number of classes in the output variable. 

The classification techniques help make predictions about the target values’ category based on any input provided. Usually, the term “classification” is used to narrate the predictive modeling in which the sample annotation is definite. Moreover, you can use a classification algorithm to allocate every data point to a particular class. For instance, you can label a pineapple as a fruit or vegetable in a database or categorize products based on department, segment, category, or subcategory.

Before moving on to exploring the types of classification and clustering, you must thoroughly know the detail of each of them. The first stage in classification is the training step and the second one denotes where to classify the data. You must train the algorithm on an appropriately classified dataset. So, it guarantees that the points in your dataset are correctly classified after you run the corresponding algorithm. After the data is classified, you can test the algorithm’s accuracy by assessing sensitivity and precision to recognize the correct output.

Before exploring classification vs clustering, let’s first look at the types of classification algorithms.

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Types of Classification Algorithms

Logistic Regression: – It is one of the linear models which can be used for classification. It uses the sigmoid function to calculate the probability of a certain event occurring. It is an ideal method for the classification of binary variables.

K-Nearest Neighbours (kNN): – It uses distance metrics like Euclidean distance, Manhattan distance, etc. to calculate the distance of one data point from every other data point. To classify the output, it takes a majority vote from k nearest neighbors of each data point. 

The classification and clustering differ a lot based on this category. Whenever a customer searches for a product on your website, the classification algorithm will demonstrate identical items that might be pertinent to the original search term. Moreover, other products that might be frequently bought with the product are also advised to the shopper during this point.

Decision Trees: – It is a non-linear model that overcomes a few of the drawbacks of linear algorithms like Logistic regression. It builds the classification model in the form of a tree structure that includes nodes and leaves. This algorithm involves multiple if-else statements which help in breaking down the structure into smaller structures and eventually providing the final outcome. It can be used for regression as well as classification problems. 

Understanding the types of clustering and classification algorithms is important before assessing their differences. This type of classification algorithm marks a prominent difference between these two approaches. Decision Trees method prepares a binary tree with input variables (also known as nodes) and output variables (also known as predictions).

Decision trees assist you to map the consumer decision-making procedure for a specific product category represented as a consumer decision tree. Also, this method helps select a product that meets your needs. You can execute it as a questionnaire/quiz wherein each choice a shopper makes lead them to a final product recommendation.

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Random Forest: – It is an ensemble learning method that involves multiple decision trees to predict the outcome of the target variable. Each decision tree provides its own outcome. In the case of the classification problem, it takes the majority vote of these multiple decision trees to classify the final outcome. In the case of the regression problem, it takes the average of the values predicted by the decision trees.

Naïve Bayes: – It is an algorithm that is based upon Bayes’ theorem. It assumes that any particular feature is independent of the inclusion of other features. i.e. They are not correlated to one another. It generally does not work well with complex data due to this assumption as in most of the data sets there exists some kind of relationship between the features. 

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Support Vector Machine: – It represents the data points in multi-dimensional space. These data points are then segregated into classes with the help of hyperplanes. It plots an n-dimensional space for the n number of features in the dataset and then tries to create the hyperplanes such that it divides the data points with maximum margin.

Along with the key features, you also need to learn the applications of clustering and classification. Let’s first go through the applications of the classification algorithm.

Read: Common Examples of Data Mining.

Applications

The evaluation of classification vs clustering differences is incomplete without understanding their applications. Both classification and clustering in data mining show us unique benefits. However, you also need to explore other applications of each of these approaches.

So far it is known that data classification is a data mining process that helps categorise items by assigning them to target categories or classes. Therefore, in any circumstance where a huge amount of data needs to be categorised, in order to make any task easier, classification is applied. Software companies often utilise data classification to fix their bugs quickly. The reason is catagorising cases and bug reports make it easier for them to detect the software malfunction and fix it. 

The process of classifying data is also massively helpful for organisations that lack resources, especially employee resources who can perform such labour and time-intensive tasks. Therefore, this triage process often comes to the rescue of many such companies where a huge amount of data needs to be handled.  

Another area of implementation of data classification can be found in the finance sector. The predictive facility of this approach helps find the suitable target class. For instance, it helps categorising a large number of bank account holders into low, medium, or high credit risk categories.

If you want to thoroughly assess the clustering vs classification differences, you should first look at their major applications. Commonly, a classification algorithm is used in the financial sector to assure data security. Especially in the era of online transactions that marks the decreased use of cash, it is vital to decide whether money transfers made via cards are safe or not. Furthermore, entities can categorize transactions as correct or fake using the historical data on customer behavior.

Other areas of application include- 

  • Email Spam Detection.
  • Facial Recognition.
  • Identifying whether the customer will churn or not.
  • Bank Loan Approval.

One of the major differences between clustering vs classification is that a classification algorithm is used for consumer behavior classification. You can use the classification to categorize your customer base based on certain factors.

For instance, you can classify shoppers based on brand loyalty for a specific brand. This information helps you to target non-brand loyal customers with marketing to promote brand switching.

The classification algorithm is used to build a model that can use gene expression data for predicting the forecast of a cancer patient. Moreover, it is used to build a model that can employ some numeric data to allocate a sample to one of the many disease subtypes.

Clustering

Clustering is a type of unsupervised machine learning algorithm. It is used to group data points having similar characteristics as clusters. Ideally, the data points in the same cluster should exhibit similar properties and the points in different clusters should be as dissimilar as possible.

Clustering is divided into two groups – hard clustering and soft clustering. In hard clustering, the data point is assigned to one of the clusters only whereas in soft clustering, it provides a probability likelihood of a data point to be in each of the clusters.

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The classification and clustering difference highlights that the clustering algorithm adopts a single-phase approach. It means you fed the input data to the system without determining the groupings or output. This method helps you to set the clustering parameters which must align with your business goals and strategy. For instance, you can cluster a dataset based on sales, brand, subcategory, etc.

The clustering algorithm helps you to find the patterns and similarities in your customer base as well as product categories. In retail, the clustering algorithm helps you to cluster your data and convert it into a logical format from which you can produce insights.

Types of Clustering Algorithms

K-Means Clustering: – It initializes a pre-defined number of k clusters and uses distance metrics to calculate the distance of each data point from the centroid of each cluster. It assigns the data points into one of the k clusters based on its distance.

Agglomerative Hierarchical Clustering (Bottom-Up Approach): – It considers each data point as a cluster and merges these data points on the basis of distance metric and the criterion which is used for linking these clusters.

Divisive Hierarchical Clustering (Top-Down Approach): – It initializes with all the data points as one cluster and splits these data points on the basis of distance metric and the criterion. Agglomerative and Divisive clustering can be represented as a dendrogram and the number of clusters to be selected by referring to the same.

DBSCAN (Density-based Spatial Clustering of Applications with Noise): – It is a density-based clustering method. Algorithms like K-Means work well on the clusters that are fairly separated and create clusters that are spherical in shape. DBSCAN is used when the data is in arbitrary shape and it is also less sensitive to the outliers. It groups the data points that have many neighbouring data points within a certain radius.

OPTICS (Ordering Points to Identify Clustering Structure): – It is another type of density-based clustering method and it is similar in process to DBSCAN except that it considers a few more parameters. But it is more computationally complex than DBSCAN. Also, it does not separate the data points into clusters, but it creates a reachability plot which can help in the interpretation of creating clusters.

BIRCH (Balanced Iterative Reducing and Clustering using Hierarchies): – It creates clusters by generating a summary of the data. It works well with huge datasets as it first summarises the data and then uses the same to create clusters. However, it can only deal with numeric attributes that can be represented in space.

Also Read: Data Mining Algorithms You Should Know

Applications

The clustering applications are vast in nature. Precisely in data mining, clustering is used as an analysing process to deduce images, data and recognise underlying patterns in them. This helps companies to do better market research, and by using data clustering companies often discover new groups in the database of customers. 

For example, in retail marketing, retail companies use the process of clustering to identify groups of household items that can be placed together to provide the customers with a more organised and put-together experience. Another example is streaming services that often perform clustering analysis to identify viewers who have similar behaviour and viewing choices. In sports science as well, clustering plays an important role. Data scientists who work for sports teams often use the clustering method to identify players with similar traits and characteristics. They then group these players together to build a more efficient team. 

Health insurance companies also utilise the clustering method. Actuaries at these companies collect data on various subjects such as total number of doctor visits, tidal household size, number of chronic patients in the household, the average age of household, etc, and then use this information into a clustering algorithm and set monthly premiums accordingly. 

  • Segmentation of consumer base in the market. 
  • Analysis of Social network.
  • Image segmentation.
  • Recommendation Systems.

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One of the famous applications of the clustering algorithms is Netflix recommendation systems. Though the company is quite subtle with its algorithms, it is validated that there are nearly 2,000 clusters or communities that share common audiovisual tastes.

For example, Cluster 290 includes people who like the series “Black Mirror”, “Lost”, and “Groundhog Day”. These clusters help Netflix to improve its knowledge of the interests of viewers and therefore make better decisions in the development of new original series.

Clustering vs Classification: Table of Differences

Even though both classification and clustering are used for categorising objects, there is a significant difference between classification and clustering. The difference between clustering and classification can be categorised into multiple segments such as its functionality, the process that they follow, and their complexity. Therefore, knowing classification vs clustering is crucial so that one can know when to implement each. 

Lets discuss the differences between classification and clustering with examples.

Parameters  Classification  Clustering 
Type of learning  Classification is a supervised machine learning technique.  Clustering is an unsupervised machine learning technique. 
Training data  Classification requires labeled training data, where each data point is assigned a class label.  Clustering does not require labeled training data. 
Learning goal  Data can be categorized into predetermined classes or labels using this technique.  Related data points are grouped in a cluster using this technique. 
Algorithm output  The output of a classification model is a discrete class label or category.  The output of a clustering algorithm is a set of clusters. 
Interpretability  Classification models generally offer clear predictions with features that are easy to interpret.  Clustering might generate clusters that are challenging to interpret, particularly in high-dimensional spaces. 
Algorithm usage  Classification is ideally used for predictive modeling  Clustering is used for exploratory data analysis and identifying inherent structures or patterns within the data 
Performance on large dataset  For large datasets, classification algorithms may be computationally intensive  Clustering algorithms can handle large datasets efficiently. 
Performance metrics  Performance of a classification model is evaluated using metrics such as accuracy, precision, recall, and F1 score.  Performance of clustering model is evaluated using metrics such as cluster cohesion, separation, and silhouette score. 
Examples of algorithm type  Examples of classification algorithms include logistic regression, decision trees, random forests, and support vector machines (SVM).  Examples of clustering algorithms include K-means, hierarchical clustering, and DBSCAN. 
Examples of algorithm usage  Classification algorithms are useful for tasks like identifying whether an email is spam or not, identifying whether a customer is likely to default in credit card payment.  Clustering algorithms are useful for tasks like grouping customers based on purchasing behavior, segmenting news articles into topics. 

Clustering vs Classification: Table of Differences: Detailed Comparison

  1. Type: – Clustering is an unsupervised learning method whereas classification is a supervised learning method.
  2. Process: – In clustering, data points are grouped as clusters based on their similarities. Hence, here the instances are classified based on their resemblance and without any class labels. Classification involves classifying the input data as one of the class labels from the output variable. Therefore, it can be defined as an approach to classifying the input instances based on their related class labels.
  3. Prediction: – Classification involves the prediction of the input variable based on the model building. Clustering is generally used to analyze the data and draw inferences from it for better decision making.
  4. Splitting of data: – Classification algorithms need the data to be split as training and test data for predicting and evaluating the model. Clustering algorithms do not need the splitting of data for its use.
  5. Data Label: – Classification algorithms deal with labelled data whereas clustering algorithms deal with unlabelled data.
  6. Stages: – Classification process involves two stages – Training and Testing. The clustering process involves only the grouping of data.
  7. Complexity: – As classification deals with a greater number of stages, the complexity of the classification algorithms is higher than the clustering algorithms whose aim is only to group the data.
  8. Meaning: – The major classification and clustering difference is based on their key concept. The process of classifying the input instances depending on their corresponding class labels is called classification. On the other hand, grouping the instances depending on their similarity without using class labels is called clustering.
  9. Example Algorithms: -The examples of classification algorithms include Logistic regression, Support vector machines, Naive Bayes classifier, etc. Examples of clustering algorithms include-means clustering algorithm, Gaussian (EM) clustering algorithm, Fuzzy c-means clustering algorithm, etc.

Applying clustering to your Business

In addition to the application of classification and clustering in data mining, you must know some of their other applications. You can apply a clustering algorithm to help reach your business goals. Moreover, you can use cluster analysis to divide and profile your customer base. Moreover, you can group shoppers based on variables that are aligned with your business objectives like performance data, demographics, or behavioral characteristics.

 It can be presumed that shoppers who belong to the same cluster demonstrate the same consumer behavior. Thus, you can identically target them. Consequently, this allows you to comprehend your target market and provide the right products at the right place, time, and price.

You can use a clustering algorithm in the assortment planning and space allotment functions. After understanding every cluster, you can develop specialized customer-focused product ranges. The corresponding information is useful in the distribution of floor and shelf space, owing to the customers’ requirements in the cluster. Also, the information is useful in the succeeding assortment plan that you may have previously created.

Just like classification and clustering in machine learning provides outstanding benefits, they also benefit other sectors. For example, a clustering algorithm can help you explore the data set and search for artifacts. This can be accomplished by clustering the data and determining whether the clusters agree with the signals that one anticipates to be the dominating ones, or if they correspond to batch effects or some other technical artifacts.

Similarities Between Clustering and Classification 

 Although classification vs clustering in data mining have distinct differences in their applications, there are indeed certain similarities shared between the two techniques. Both classification and clustering are part of the machine learning landscape that involves training algorithms on data to generate predictions or gain insights. Both classification and clustering have the same process which involves recognizing patterns and grouping data points according to similarities. While classification and clustering algorithms may differ in terms of interpretability, both are used in data exploration and analysis to identify underlying patterns, relationships, or trends in datasets. Visualization tools such as scatter plots, heatmaps, and dendrograms can help in understanding these patterns and relationships. 

 It may be necessary to perform data preprocessing steps such as feature scaling, normalization, and addressing missing values before using classification or clustering methods. Both classification and clustering may require preprocessing steps to clean and prepare the data before applying the algorithms. This could include handling missing values, encoding categorical variables, and scaling features. Feature engineering techniques may be employed in both the type of algorithms to create new features or transform existing ones to improve model performance or clustering quality. 

Choosing Between Clustering and Classification 

 The key determinant in selecting between clustering vs classification hinges on the type of learning involved. When there are available values for the target variable, it constitutes a supervised learning task, whereas the absence of such values denotes an unsupervised learning task. Classification is employed in supervised learning scenarios, while clustering is integral to unsupervised learning approaches. 

 The subsequent consideration in deciding between the two options involves grasping the objective of our analysis. When our aim is to forecast binary class labels such as spam or non-spam, fraud or non-fraud, or multi-class labels like the type of fruit, identifying the correct character, etc., we can utilize classification models. Conversely, if our objective is to reveal concealed patterns or groups within the dataset such as customer segmentation, detecting anomaly, and pattern recognition, clustering algorithms can be employed. 

Conclusion

Clustering and classification work differently and give different results. Both are important for solving different problems. This article introduces the basics of clustering vs classification. 

Clustering and Classification are important for improving how businesses work. Even though they might seem similar, they actually help us understand customers in different ways, which makes shopping better. Using clustering and classification in machine learning, we can understand and target customers better, which helps businesses make more money. 

Learning about different types of algorithms and how they’re used in real life has been interesting. But it’s important to know that there are lots of other algorithms for solving problems in clustering vs classification. 

 If you are curious to learn data science, I strongly recommend you to check out our PG Diploma in Data Science which is created for working professionals and offers 10+ case studies & projects, practical hands-on workshops, mentorship with industry experts, 1-on-1 with industry mentors, 400+ hours of learning and job assistance with top firms. 

 Learn data science courses from the World’s top Universities. Earn Executive PG Programs, Advanced Certificate Programs, or Masters Programs to fast-track your career. 

Frequently Asked Questions (FAQs)

1. What are the different methods and applications of Clustering?

A cluster can be called a group of objects that come under the same class. In simple words, we can say that a cluster is a group of objects that possess similar properties. Clustering is known to be an important process for analysis in Machine Learning.
Different methods of Clustering
1. Partitioning-based clustering
2. Hierarchical-based clustering
3. Density-based clustering
4. Grid-based clustering
5. Model-based clustering
Different applications of Clustering
1. Recommendation engines
2. Market and customer segmentation
3. Social network analysis (SNA)
4. Search result clustering
5. Biological data analysis
6. Medical imaging analysis
7. Identifying cancer cells
These are some of the most widely used methods and most popular applications of clustering.

2. What are the different classifiers and applications of Classification?

The classification technique is utilized for putting a label onto every class that has been made by categorizing the data into a distinct number of classes.
Classifiers can be of 2 types:
1. Binary Classifier – Here, the classification is performed with only 2 possible outcomes or 2 distinct classes. For instance, classification of male and female, spam email and non-spam email, etc.
2. Multi-Class Classifier – Here, the classification is performed with more than two distinct classes. For instance, classification of the types of soil, classification of music, etc.
Applications of Classification are:
1. Document classification
Biometric identification
Handwriting recognition
Speech recognition
These are only a few of the applications of classification. This is a useful concept at several places in different industries.

3. What are the most common classification algorithms in Machine Learning?

Classification is a task of natural language processing that completely depends on machine learning algorithms. Every algorithm is used for solving a specific problem. So, every algorithm is used at a different place based on the requirement.
There are plenty of classification algorithms that could be used on a dataset. In statistics, the study of classification is very vast, and the use of any particular algorithm will completely depend on the dataset that you are working on. Below are the most common algorithms in machine learning for classification:
1. Support vector machines
2. Naïve Bayes
3. Decision tree
4. K-Nearest neighbors
5. Logistic regression
These classification algorithms are used to make several analytical tasks easy and efficient that might take up hundreds of hours for humans to perform.

Did you find this article helpful?

Rohit Sharma

Rohit Sharma is the Program Director for the UpGrad-IIIT Bangalore, PG Diploma Data Analytics Program.

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Data Analytics Student Speak: Story of Thulasiram

When Thulasiram enrolled in the UpGrad Data Analytics program, in its first cohort, he was not very different for us, from the rest of our students in this. While we still do not and should not treat learners differently, being in the business of education – we definitely see this particular student in a different light. His sheer resilience and passion for learning shaped his success story at UpGrad. Humble beginnings Born in the small town of Chittoor, Andhra Pradesh, Thulasiram does not remember much of his childhood given that he enlisted in the Navy at a very young age of about 15 years. Right out of 10th standard, he trained for four years, acquiring a diploma in mechanical engineering. Thulasiram came from humble means. His father was the manager of a small general store and his mother a housewife. It’s difficult to dream big when leading a sheltered life with not many avenues for exposure to unconventional and exciting opportunities. But you can’t take learning out of the learner. “One thing I remember about school is our Math teacher,” reminisces Thulasiram, “He used to give us lot of puzzles to solve. I still remember one puzzle. If you take a chessboard and assume that all pawns are queens; you have to arrange them in such a way that none of the eight pawns should die. Every queen, should not affect another queen. It was a challenging task, but ultimately we did it, we solved it.” Navy & MBA At 35 years of age, Thulasiram has been in the navy for 19 years. Presently, he is an instructor at the Naval Institute of Aeronautical Technology. “I am from the navy and a lot of people don’t know that there is an aviation wing too. So, it’s like a dream; when you are a small child, you never dream of touching an aircraft, let alone maintaining it. I am very proud of doing this,” says Thulasiram on taking the initiative to upskill himself and becoming a naval-aeronautics instructor. When the system doesn’t push you, you have to take the initiative yourself. Thulasiram imbibed this attitude. He went on to enroll in an MBA program and believes that the program drastically helped improve his communication skills and plan his work better. How Can You Transition to Data Analytics? Data Analytics Like most of us, Thulasiram began hearing about the hugely popular and rapidly growing domain of data analytics all around him. Already equipped with the DNA of an avid learner and keen to pick up yet another skill, Thulasiram began researching the subject. He soon realised that this was going to be a task more rigorous and challenging than any he had faced so far. It seemed you had to be a computer God, equipped with analytical, mathematical, statistical and programming skills as prerequisites – a list that could deter even the most motivated individuals. This is where Thulsiram’s determination set him apart from most others. Despite his friends, colleagues and others that he ran the idea by, expressing apprehension and deterring him from undertaking such a program purely with his interests in mind – time was taken, difficulty level, etc. – Thulasiram, true to the spirit, decided to pursue it anyway. Referring to the crucial moment when he made the decision, he says, If it is easy, everybody will do it. So, there is no fun in doing something which everybody can do. I thought, let’s go for it. Let me push myself — challenge myself. Maybe, it will be a good challenge. Let’s go ahead and see whether I will be able to do it or not. UpGrad Having made up his mind, Thulasiram got straight down to work. After some online research, he decided that UpGrad’s Data Analytics program, offered in collaboration with IIIT-Bangalore that awarded a PG Diploma on successful completion, was the way to go. The experience, he says, has been nothing short of phenomenal. It is thrilling to pick up complex concepts like machine learning, programming, or statistics within a matter of three to four months – a feat he deems nearly impossible had the source or provider been one other than UpGrad. Our learners also read: Top Python Free Courses Favorite Elements Ask him what are the top two attractions for him in this program and, surprising us, he says deadlines! Deadlines and assignments. He feels that deadlines add the right amount of pressure he needs to push himself forward and manage time well. As far as assignments are concerned, Thulasiram’s views resonate with our own – that real-life case studies and application-based learning goes a long way. Working on such cases and seeing results is far superior to only theoretical learning. He adds, “flexibility is required because mostly only working professionals will be opting for this course. You can’t say that today you are free, because tomorrow some project may be landing in your hands. So, if there is no flexibility, it will be very difficult. With flexibility, we can plan things and maybe accordingly adjust work and family and studies,” giving the UpGrad mode of learning, yet another thumbs-up. Amongst many other great things he had to say, Thulasiram was surprised at the number of live sessions conducted with industry professionals/mentors every week. Along with the rest of his class, he particularly liked the one conducted by Mr. Anand from Gramener. Top Data Science Skills to Learn to upskill SL. No Top Data Science Skills to Learn 1 Data Analysis Online Courses Inferential Statistics Online Courses 2 Hypothesis Testing Online Courses Logistic Regression Online Courses 3 Linear Regression Courses Linear Algebra for Analysis Online Courses What Kind of Salaries do Data Scientists and Analysts Demand? Get data science certification from the World’s top Universities. Learn Executive PG Programs, Advanced Certificate Programs, or Masters Programs to fast-track your career. Read our popular Data Science Articles Data Science Career Path: A Comprehensive Career Guide Data Science Career Growth: The Future of Work is here Why is Data Science Important? 8 Ways Data Science Brings Value to the Business Relevance of Data Science for Managers The Ultimate Data Science Cheat Sheet Every Data Scientists Should Have Top 6 Reasons Why You Should Become a Data Scientist A Day in the Life of Data Scientist: What do they do? Myth Busted: Data Science doesn’t need Coding Business Intelligence vs Data Science: What are the differences? upGrad’s Exclusive Data Science Webinar for you – ODE Thought Leadership Presentation document.createElement('video'); https://cdn.upgrad.com/blog/ppt-by-ode-infinity.mp4 Explore our Popular Data Science Courses Executive Post Graduate Programme in Data Science from IIITB Professional Certificate Program in Data Science for Business Decision Making Master of Science in Data Science from University of Arizona Advanced Certificate Programme in Data Science from IIITB Professional Certificate Program in Data Science and Business Analytics from University of Maryland Data Science Courses “Have learned most here, only want to learn..” Interested only in learning, Thulasiram made this observation about the program – compared to his MBA or any other stage of life. He signs off calling it a game-changer and giving a strong recommendation to UpGrad’s Data Analytics program. We are truly grateful to Thulasiram and our entire student community who give us the zeal to move forward every day, with testimonials like these, and make the learning experience more authentic, engaging, and truly rewarding for each one of them. If you are curious to learn about data analytics, data science, check out IIIT-B & upGrad’s PG Diploma in Data Science which is created for working professionals and offers 10+ case studies & projects, practical hands-on workshops, mentorship with industry experts, 1-on-1 with industry mentors, 400+ hours of learning and job assistance with top firms.
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by Apoorva Shankar

07 Dec'16
Decoding Easy vs. Not-So-Easy Data Analytics

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Decoding Easy vs. Not-So-Easy Data Analytics

Authored by Professor S. Sadagopan, Director – IIIT Bangalore. Prof. Sadagopan is one of the most experienced academicians on the expert panel of UpGrad & IIIT-B PG Diploma Program in Data Analytics. As a budding analytics professional confounded by jargon, hype and overwhelming marketing messages that talk of millions of upcoming jobs that are paid in millions of Rupees, you ought to get clarity about the “real” value of a data analytics education. Here are some tidbits – that should hopefully help in reducing your confusion. Some smart people can use “analytical thinking” to come up with “amazing numbers”; they are very useful but being “intuitive”, they cannot be “taught.” For example: Easy Analytics Pre-configuring ATMs with Data Insights  “We have the fastest ATM on this planet” Claimed a respected Bank. Did they get a new ATM made especially for them? No way. Some smart employee with an analytical mindset found that 90% of the time that users go to an ATM to withdraw cash, they use a fixed amount, say Rs 5,000. So, the Bank re-configured the standard screen options – Balance Inquiry, Withdrawal, Print Statement etc. – to include another option. Withdraw XYZ amount, based on individual customer’s past actions. This ended up saving one step of ATM operation. Instead of selecting the withdrawal option and then entering the amount to be withdrawn, you could now save some time – making the process more convenient and intuitive. A smart move indeed, however, this is something known as “Easy Analytics” that others can also copy. In fact, others DID copy, within three months! A Start-Up’s Guide to Data Analytics Hidden Data in the Weather In the sample data-sets that used to accompany a spreadsheet product in the 90’s, there used to be data on the area and population of every State in the United States. There was also an exercise to teach the formula part of the spreadsheet to compute the population density (population per sq. km). New Jersey, with a population of 467 per sq. km, is the State with the highest density. While teaching a class of MBA students in New Jersey, I met an Indian student who figured out that in terms of population density, New Jersey is more crowded than India with 446 people per sq. km!  An interesting observation, although comparing a State with a Country is a bit misleading. Once again, an Easy Analytics exercise leading to a “nice” observation! Some simple data analytics exercises can be routinely done, and are made relatively easier, thanks to amazing tools: B-School Buying Behavior Decoded In a B-School in India that has a store on campus, (campus is located far from the city center) some smart students put several years of sales data of their campus store. They were excited by the phenomenal computer power and near, idiot-proof analytics software. The real surprise, however, was that eight items accounted for 85% of their annual sales. More importantly, these eight items were consumed in just six days of the year! Everyone knew that a handful of items were the only fast-moving items, but they did not know the extent (85%) or the intensity (consumption in just six days) of this. It turns out that in the first 3 days of the semester the students would stock the items for the full semester! The B-School found it sensible to request a nearby store to prop up a temporary stall for just two weeks at the beginning of the semesters and close down the Campus Store. This saved useful space and costs without causing major inconvenience to the students. A good example of Easy Analytics done with the help of a powerful tool. Top 4 Data Analytics Skills You Need to Become an Expert! The “Not So Easy” Analytics needs deep analytical understanding, tools, an ‘analytical mindset’ and some hard work. Here are two examples, one taken from way back in the 70’s and the other occurring very recently: Not-So-Easy Analytics To Fly or Not to Fly, That is the Question Long ago, the American Airlines perfected planned overbooking of airline seats, thanks to SABRE Airline Reservation system that managed every airline seat. Armed with detailed past data of ‘empty seats’ and ‘no show’ in every segment of every flight for every day through the year, and modeling airline seats as perishable commodities, the American Airlines was able to improve yield, i.e., utilization of airplane capacity. They did this through planned overbooking – selling more tickets than the number of seats, based on projected cancellations. Explore our Popular Data Science Online Certifications Executive Post Graduate Programme in Data Science from IIITB Professional Certificate Program in Data Science for Business Decision Making Master of Science in Data Science from University of Arizona Advanced Certificate Programme in Data Science from IIITB Professional Certificate Program in Data Science and Business Analytics from University of Maryland Data Science Online Certifications If indeed more passengers showed up than the actual number of seats, American Airlines would request anyone volunteering to forego travel in the specific flight, with the offer to fly them by the next flight (often free) and taking care of hotel accommodation if needed. Sometimes, they would even offer cash incentives to the volunteer to opt-out. Using sophisticated Statistical and Operational Research modeling, American Airlines would ensure that the flights went full and the actual incidents of more passengers than the full capacity, was near zero. In fact, many students would look forward to such incidents so that they could get incentives, (in fact, I would have to include myself in this list) but rarely were they rewarded!) upGrad’s Exclusive Data Science Webinar for you – Transformation & Opportunities in Analytics & Insights document.createElement('video'); https://cdn.upgrad.com/blog/jai-kapoor.mp4 What American Airlines started as an experiment has become the standard industry practice over the years. Until recently, a team of well-trained (often Ph.D. degree holders) analysts armed with access to enormous computing power, was needed for such an analytics exercise to be sustained. Now, new generation software such as the R Programming language and powerful desktop computers with significant visualization/graphics power is changing the world of data analytics really fast. Anyone who is well-trained (not necessarily requiring a Ph.D. anymore) can become a first-rate analytics professional. Top Data Science Skills You Should Learn SL. No Top Data Science Skills to Learn 1 Data Analysis Online Certification Inferential Statistics Online Certification 2 Hypothesis Testing Online Certification Logistic Regression Online Certification 3 Linear Regression Certification Linear Algebra for Analysis Online Certification Unleashing the Power of Data Analytics Our learners also read: Free Python Course with Certification Read our popular Data Science Articles Data Science Career Path: A Comprehensive Career Guide Data Science Career Growth: The Future of Work is here Why is Data Science Important? 8 Ways Data Science Brings Value to the Business Relevance of Data Science for Managers The Ultimate Data Science Cheat Sheet Every Data Scientists Should Have Top 6 Reasons Why You Should Become a Data Scientist A Day in the Life of Data Scientist: What do they do? Myth Busted: Data Science doesn’t need Coding Business Intelligence vs Data Science: What are the differences?   Cab Out of the Bag Uber is yet another example displaying how the power of data analytics can disrupt a well-established industry. Taxi-for-sure in Bangalore and Ola Cabs are similar to Uber. Together, these Taxi-App companies (using a Mobile App to hail a taxi, the status monitor the taxi, use and pay for the taxi) are trying to convince the world to move from car ownership to on-demand car usage. A simple but deep analytics exercise in the year 2008 gave such confidence to Uber that it began talking of reducing car sales by 25% by the year 2025! After building the Uber App for iPhone, the Uber founder enrolled few hundreds of taxi customers in San Francisco and few hundreds of taxi drivers in that area as well. All that the enrolled drivers had to do was to touch the Uber App whenever they were ready for a customer. Similarly, the enrolled taxi customers were requested to touch the Uber App whenever they were looking for a taxi. Thanks to the internet-connected phone (connectivity), Mobile App (user interface), GPS (taxi and end-user location) and GIS (location details), Uber could try connecting the taxi drivers and the taxi users. The real insight was that nearly 90% of the time, taxi drivers found a customer, less than 100 meters away! In the same way, nearly 90% of the time, taxi users were connected with their potential drivers in no time, not too far away. Unfortunately, till the Uber App came into existence, riders and taxi drivers had no way of knowing this information. More importantly, they both had no way of reaching each other! Once they had this information and access, a new way of taxi-hailing could be established. With back-end software to schedule taxis, payment gateway and a mobile payment mechanism, a far more superior taxi service could be established. Of course, near home, we had even better options like Taxi-for-sure trying to extend this experience even to auto rickshaws. The rest, as they say, is “history in the making!” Deep dive courses in data analytics will help prepare you for such high impact applications. It is not easy, but do remember former US President Kennedy’s words “we chose to go to the Moon not because it is easy, but because it is hard!” Get data science certification from the World’s top Universities. Learn Executive PG Programs, Advanced Certificate Programs, or Masters Programs to fast-track your career.  
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by Prof. S. Sadagopan

14 Dec'16
Launching UpGrad’s Data Analytics Roadshow – Are You Game?

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Launching UpGrad’s Data Analytics Roadshow – Are You Game?

We, at UpGrad, are excited to announce a brand new partnership with various thought leaders in the Data Analytics industry – IIIT Bangalore, Genpact, Analytics Vidhya and Gramener – to bring to you a one-of-a-kind Analytics Roadshow! As part of this roadshow, we will be conducting several back-to-back events that focus on different aspects of analytics, creating interaction points across India, to do our bit for a future ready and analytical, young workforce.  Also Read: Analytics Vidhya article on the UpGrad Data Analytics Roadshow Here is the line-up for the roadshow, to give you a better sense of what to expect: 9 webinars – These webinars (remote) will be conducted by industry experts and are aimed at increasing analytics awareness, providing a way for aspirants to interact with industry practitioners and getting their tough questions answered. 11 workshops – The workshops will be in-person events to take these interactions to the next level. These would be spread across 6 cities – Delhi, Bengaluru, Hyderabad, Chennai, Mumbai and Pune. So, if you are in any of these cities, we are looking forward to interact with you. Featured Data Science program for you: Master of Science in Data Science from from IIIT-B 2 Conclaves – These conclaves are larger events with a pre-defined agendas and time for networking. The first conclave is happening on the 17th of December in Bengaluru.  Explore our Popular Data Science Online Certifications Executive Post Graduate Programme in Data Science from IIITB Professional Certificate Program in Data Science for Business Decision Making Master of Science in Data Science from University of Arizona Advanced Certificate Programme in Data Science from IIITB Professional Certificate Program in Data Science and Business Analytics from University of Maryland Data Science Online Certifications Hackathon – Time to pull up your sleeves and showcase your nifty skills. We will be announcing the format of the event shortly. “We find that the IT in­dustry is ab­sorb­ing al­most half of all of the ana­lyt­ics jobs. Banking is the second largest, but trails at al­most one fourth of IT’s re­cruit­ing volume. It is in­ter­est­ing that data rich in­dus­tries like Retail, Energy and Insurance are trail­ing near the bot­tom, lower than even con­struc­tion or me­dia, who handle less data. Perhaps these are ripe for dis­rup­tion through ana­lyt­ics?” Our learners also read: Learn Python Online for Free Mr. S. Anand, CEO of Gramener, wonders aloud. Read our popular Data Science Articles Data Science Career Path: A Comprehensive Career Guide Data Science Career Growth: The Future of Work is here Why is Data Science Important? 8 Ways Data Science Brings Value to the Business Relevance of Data Science for Managers The Ultimate Data Science Cheat Sheet Every Data Scientists Should Have Top 6 Reasons Why You Should Become a Data Scientist A Day in the Life of Data Scientist: What do they do? Myth Busted: Data Science doesn’t need Coding Business Intelligence vs Data Science: What are the differences? upGrad’s Exclusive Data Science Webinar for you – Watch our Webinar on The Future of Consumer Data in an Open Data Economy document.createElement('video'); https://cdn.upgrad.com/blog/sashi-edupuganti.mp4   Top Data Science Skills You Should Learn SL. No Top Data Science Skills to Learn 1 Data Analysis Online Certification Inferential Statistics Online Certification 2 Hypothesis Testing Online Certification Logistic Regression Online Certification 3 Linear Regression Certification Linear Algebra for Analysis Online Certification Get data science certification from the World’s top Universities. Learn Executive PG Programs, Advanced Certificate Programs, or Masters Programs to fast-track your career.
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by Apoorva Shankar

15 Dec'16
What’s Cooking in Data Analytics? Team Data at UpGrad Speaks Up!

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What’s Cooking in Data Analytics? Team Data at UpGrad Speaks Up!

Team Data Analytics is creating the most immersive learning experience for working professionals at UpGrad. Data Insider recently checked in to me to get my insights on the data analytics industry; including trends to watch out for and must-have skill sets for today’s developers. Here’s how it went: How competitive is the data analytics industry today? What is the demand for these types of professionals? Let’s talk some numbers, a widely-quoted McKinsey report states that the United States will face an acute shortage of around 1.5 million data professionals by 2018. In India, which is emerging as the global analytics hub, the shortage of such professionals could go up to as high as 200,000. In India alone, the number of analytics jobs saw a 120 percent rise from June 2015 to June 2016. So, we clearly have a challenge set out for us. Naturally, because of acute talent shortage, talented professionals are high in demand. Decoding Easy vs. Not-So-Easy Analytics What trends are you following in the data analytics industry today? Why are you interested in them? There are three key trends that we should watch out for: Personalization I think the usage of data to create personalized systems is a key trend being adopted extremely fast, across the board. Most of the internet services are removing the anonymity of online users and moving towards differentiated treatment. For example, words recommendations when you are typing your messages or destinations recommendations when you are using Uber. Our learners also read: Learn Python Online for Free End of Moore’s Law Another interesting trend to watch out for is how companies are getting more and more creative as we reach the end of Moore’s Law. Moore’s Law essentially states that every two years we will be able to fit double the number of transistors that could be fit on a chip, two years ago. Because of this law, we have unleashed the power of storing and processing huge amounts of data, responsible for the entire data revolution. But what will happen next? IoT Another trend to watch out for, for the sheer possibilities it brings. It’s the emergence of smart systems which is made possible by the coming together of cloud, big data, and IoT (internet of things). Explore our Popular Data Science Courses Executive Post Graduate Programme in Data Science from IIITB Professional Certificate Program in Data Science for Business Decision Making Master of Science in Data Science from University of Arizona Advanced Certificate Programme in Data Science from IIITB Professional Certificate Program in Data Science and Business Analytics from University of Maryland Data Science Courses What skill sets are critical for data engineers today? What do they need to know to stay competitive? A good data scientist sits at a rare overlap of three areas: Domain Knowledge This helps understand and appreciate the nuances of a business problem. For e.g, an e-commerce company would want to recommend complementary products to its buyers. Statistical Knowledge Statistical and mathematical knowledge help to inform data-driven decision making. For instance, one can use market basket analysis to come up with complementary products for a particular buy. Technical Knowledge This helps perform complex analysis at scale; such as creating a recommendation system that shows that a buyer might prefer to also buy a pen while buying a notebook. How Can You Transition to Data Analytics? Outside of their technical expertise, what other skills should those in data analytics and business intelligence be sure to develop? Ultimately, data scientists are problem solvers. And every problem has a specific context, content and story behind it. This is where it becomes extremely important to tie all these factors together – into a common narrative. Essentially all data professionals need to be great storytellers. In this respect, one of the key skills for analysts to sharpen would be, breaking down the complexities of analytics for others working with them. They can appreciate the actual insights derived – and work toward a common business goal. In addition, what is as crucial is getting into a habit of constantly learning. Even if it means waking up every morning and reading what’s relevant and current in your domain. Top Essential Data Science Skills to Learn SL. No Top Data Science Skills to Learn 1 Data Analysis Certifications Inferential Statistics Certifications 2 Hypothesis Testing Certifications Logistic Regression Certifications 3 Linear Regression Certifications Linear Algebra for Analysis Certifications What should these professionals be doing to stay ahead of trends and innovations in the field? Professionals these days need to continuously upskill themselves and be willing to unlearn and relearn. The world of work and the industrial landscape of technology-heavy fields such as data analytics is changing every year. The only way to stay ahead, or even at par with these trends, is to invest in learning, taking up exciting industry-relevant projects, participating in competitions like Kaggle, etc. How important is mentorship in the data industry? Who can professionals look toward to help further their careers and their skills? Extremely important. Considering how fast this domain has emerged, academia and universities, in general, have not had the chance to keep up equally fast. Hence, the only way to stay industry-relevant with respect to this domain is to have industry-specific learning. This can only be done in two ways – through real-life case studies and mentors who are working/senior professionals and hail from the data analytics industry. In fact, at UpGrad, there is a lot of stress on industry mentorship for aspiring data specialists. This is in addition to a whole host of case studies and industry-relevant projects. Get data science certification from the World’s top Universities. Learn Executive PG Programs, Advanced Certificate Programs, or Masters Programs to fast-track your career. Read our popular Data Science Articles Data Science Career Path: A Comprehensive Career Guide Data Science Career Growth: The Future of Work is here Why is Data Science Important? 8 Ways Data Science Brings Value to the Business Relevance of Data Science for Managers The Ultimate Data Science Cheat Sheet Every Data Scientists Should Have Top 6 Reasons Why You Should Become a Data Scientist A Day in the Life of Data Scientist: What do they do? Myth Busted: Data Science doesn’t need Coding Business Intelligence vs Data Science: What are the differences?   Where are the best places for data professionals to find mentors? upGrad’s Exclusive Data Science Webinar for you – Transformation & Opportunities in Analytics & Insights document.createElement('video'); https://cdn.upgrad.com/blog/jai-kapoor.mp4 While it’s important for budding or aspiring data professionals to tap into their networks to find the right mentors, it is admittedly tough to do so. There are two main reasons that can be blamed for this. First, due to the nascent stage, the industry is at, it is extremely difficult to find someone with the requisite skill sets to be a mentor. Even if you find someone with considerable experience in the field, not everybody has the time and inclination to be an effective mentor. Hence most people don’t know where to go to be mentored. That’s where platforms like UpGrad come in, which provide you with a rich, industry-relevant learning experience. Nowhere else are you likely to chance upon such a wide range of industry tie-ups or associations for mentorship from very senior and reputed professionals. How Can You Transition to Data Analytics? What resources should those in the data analytics industry be using to ensure they’re educated and up-to-date on developments, trends, and skills? There are many. For starters, here are some good and pretty interesting blogs and resources that would serve aspiring/current data analysts well to keep up with Podcasts like Data Skeptic, Freakonomics, Talking Machines, and much more.   This interview was originally published on Data Insider.  
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by Rohit Sharma

23 Dec'16