Data Science Course Online Training and Certification

2.1 Introduction to data exploration
2.2 Importing and exporting data to/from external sources
2.3 What is data exploratory analysis, data importing, dataframes
2.4 working with dataframes, accessing individual elements, vectors and factors, operators, in-built functions, conditional, looping statements and user-defined functions, matrix, list and array.

Hands-on Exercise

1. Accessing individual elements of customer churn data
2. Modifying and extracting the results from the dataset using user-defined functions in R.

3.1 Need for Data Manipulation
3.2 Introduction to dplyr package
3.3 Selecting one or more columns with select() function, Filtering out records on the basis of a condition with filter() function, Adding new columns with the mutate() function, Sampling & Counting
3.4 Combining different functions with the pipe operator, Implementing sql like operations with sqldf.

Hands-on Exercise

1. Implementing dplyr
2. perform various operations for abstracting over how data is manipulated and stored.

4.1 Introduction to visualization
4.2 Different types of graphs, Introduction to grammar of graphics & ggplot2 package, Understanding categorical distribution with geom_bar() function, understanding numerical distribution with geom_hist() function, building frequency polygons with geom_freqpoly(), making a scatter-plot with geom_pont() function
4.3 Multivariate analysis with geom_boxplot
4.4 Univariate Analysis with Bar-plot, histogram and Density Plot, multivariate distribution
4.5 Bar-plots for categorical variables using geom_bar(), adding themes with the theme() layer
4.6 Visualization with plotly package & building web applications with shinyR, frequency-plots with geom_freqpoly(), multivariate distribution with scatter-plots and smooth lines, continuous vs categorical with box-plots, subgrouping the plots
4.7 Working with co-ordinates and themes to make the graphs more presentable, Intro to plotly & various plots, visualization with ggvis package
4.8 Geographic visualization with ggmap(), building web applications with shinyR.

Hands-on Exercise

1. Creating data visualization to understand the customer churn ratio using charts using ggplot2
2. Plotly for importing and analyzing data into grids
3. Visualize tenure, monthly charges, total charges and other individual columns by using the scatter plot.

5.1 Why do we need Statistics?
5.2 Categories of Statistics, Statistical Terminologies, Types of Data, Measures of Central Tendency, Measures of Spread
5.3 Correlation & Covariance,Standardization & Normalization,Probability & Types of Probability, Hypothesis Testing, Chi-Square testing, ANOVA, normal distribution, binary distribution.

Hands-on Exercise

1. Building a statistical analysis model that uses quantifications, representations, experimental data for gathering
2. Reviewing, analyzing and drawing conclusions from data.

6.1 Introduction to Machine Learning
6.2 Introduction to Linear Regression, predictive modeling with Linear Regression, simple Linear and multiple Linear Regression, concepts and formulas, assumptions and residual diagnostics in Linear Regression, building simple linear model
6.3 Predicting results and finding p-value, introduction to logistic regression
6.4 Comparing linear regression and logistics regression, bivariate & multi-variate logistic regression
6.5 Confusion matrix & accuracy of model, threshold evaluation with ROCR, Linear Regression concepts and detailed formulas, various assumptions of Linear Regression,residuals, qqnorm(), qqline(), understanding the fit of the model, building simple linear model, predicting results and finding p-value
6.6 understanding the summary results with Null Hypothesis, p-value & F-statistic,
building linear models with multiple independent variables.

Hands-on Exercise

1. Modeling the relationship within the data using linear predictor functions.
2. Implementing Linear & Logistics Regression in R by building model with ‘tenure’ as dependent variable and multiple independent variables.

7.1 Introduction to Logistic Regression
7.2 Logistic Regression Concepts, Linear vs Logistic regression, math behind Logistic Regression
7.3 Detailed formulas, logit function and odds, Bi-variate logistic Regression, Poisson Regression
7.4 Building simple “binomial” model and predicting result, confusion matrix and Accuracy, true positive rate, false positive rate, and confusion matrix for evaluating built model, threshold evaluation with ROCR
7.5 Finding the right threshold by building the ROC plot, cross validation & multivariate logistic regression, building logistic models with multiple independent variables
7.6 Real-life applications of Logistic Regression.

Hands-on Exercise

1. Implementing predictive analytics by describing the data
2. explaining the relationship between one dependent binary variable and one or more binary variables.
3. You will use glm() to build a model and use ‘Churn’ as the dependent variable.

8.1 What is classification and different classification techniques
8.2 Introduction to Decision Tree
8.3 Algorithm for decision tree induction, building a decision tree in R
8.4 Creating a perfect Decision Tree, Confusion Matrix, Regression trees vs Classification trees
8.5 Introduction to ensemble of trees and bagging
8.6 Random Forest concept, implementing Random Forest in R
8.7 what is Naive Bayes, Computing Probabilities, Impurity Function – Entropy, understand the concept of information gain for right split of node
8.8 Impurity Function – Information gain, understand the concept of Gini index for right split of node
8.9 Impurity Function – Gini index, understand the concept of Entropy for right split of node, overfitting & pruning, pre-pruning, post-pruning, cost-complexity pruning, pruning decision tree and predicting values, find the right no of trees and evaluate performance metrics.

Hands-on Exercise

1. Implementing Random Forest for both regression and classification problems.
2. You will build a tree, prune it by using ‘churn’ as the dependent variable and build a Random Forest with the right number of trees,
3. using ROCR for performance metrics.

9.1 What is Clustering & it’s Use Cases, what is K-means Clustering
9.2 What is Canopy Clustering
9.3 What is Hierarchical Clustering
9.4 Introduction to Unsupervised Learning
9.5 Feature extraction & clustering algorithms, k-means clustering algorithm
9.6 Theoretical aspects of k-means, and k-means process flow, K-means in R, implementing K-means on the data-set and finding the right no. of clusters using Scree-plot
9.7 Hierarchical clustering & Dendogram, understand Hierarchical clustering, implement it in R and have a look at Dendograms
9.8 Principal Component Analysis, explanation of Principal Component Analysis in detail, PCA in R, implementing PCA in R.

Hands-on Exercise

1. Deploying unsupervised learning with R to achieve clustering and dimensionality reduction
2. K-means clustering for visualizing and interpreting results for the customer churn data.

10.1 Introduction to association rule Mining & Market Basket Analysis
10.2 Measures of Association Rule Mining: Support, Confidence, Lift, Apriori algorithm & implementing it in R
10.3 Introduction to Recommendation Engine
10.4 User-based collaborative filtering & Item-Based Collaborative Filtering, implementing Recommendation Engine in R, user-Based and item-Based
10.5 Recommendation Use-cases

Hands-on Exercise

1. Deploying association analysis as a rule-based machine learning method,
2. Identifying strong rules discovered in databases with measures based on interesting discoveries.

11.1 Introducing Artificial Intelligence and Deep Learning
11.2 what is an Artificial Neural Network, TensorFlow – computational framework for building AI models
11.3 Fundamentals of building ANN using TensorFlow, working with TensorFlow in R.

12.1 What is Time Series
12.2 Techniques and applications, components of Time Series, moving average, smoothing techniques, exponential smoothing
12.3 Univariate time series models, multivariate time series analysis
12.4 Arima model
12.5 Time Series in R, sentiment analysis in R (Twitter sentiment analysis), text analysis.

Hands-on Exercise

1. Analyzing time series data
2. Sequence of measurements that follow a non-random order to identify the nature of phenomenon and to forecast the future values in the series.

13.1 Introduction to Support Vector Machine (SVM)
13.2 Data classification using SVM
13.3 SVM Algorithms using Separable and Inseparable cases
13.4 Linear SVM for identifying margin hyperplane.

14.1 What is Bayes theorem
14.2 What is Naïve Bayes Classifier
14.3 Classification Workflow
14.4 How Naive Bayes classifier works, Classifier building in Scikit-learn
14.5 Building a probabilistic classification model using Naïve Bayes, Zero Probability Problem.

15.1 Introduction to concepts of Text Mining
15.2 Text Mining use cases, understanding and manipulating text with ‘tm’ & ‘stringR’
15.3 Text Mining Algorithms, Quantification of Text
15.4 Term Frequency-Inverse Document Frequency (TF-IDF), After TF-IDF.

01 – The Market Basket Analysis (MBA) case study

1.1 This case study is associated with the modeling technique of Market Basket Analysis where you will learn about loading of data, various techniques for plotting the items and running the algorithms.
1.2 It includes finding out what are the items that go hand in hand and hence can be clubbed together.
1.3 This is used for various real world scenarios like a supermarket shopping cart and so on.

02 – Logistic Regression Case Study

2.1 In this case study you will get a detailed understanding of the advertisement spends of a company that will help to drive more sales
2.2 You will deploy logistic regression to forecast the future trends
2.3 Detect patterns, uncover insights and more all through the power of R programming.
2.4 Due to this the future advertisement spends can be decided and optimized for higher revenues.

03 – Multiple Regression Case Study

3.1 You will understand how to compare the miles per gallon (MPG) of a car based on the various parameters.
3.2 You will deploy multiple regression and note down the MPG for car make, model, speed, load conditions, etc.
3.3 It includes the model building, model diagnostic, checking the ROC curve, among other things.

04 – Receiver Operating Characteristic (ROC) case study

4.1 You will work with various data sets in R,
4.2 Deploy data exploration methodologies,
4.3 Build scalable models
4.4 Predict the outcome with highest precision, diagnose the model that you have created with various real world data, check the ROC curve and more.