Customer churn occurs when customers or subscribers stop doing business with a company or service, also known as customer attrition. It is also referred as loss of clients or customers. One industry in which churn rates are particularly useful is the telecommunications industry, because most customers have multiple options from ...

The Happy Planet Index (HPI) is an index of human well-being and environmental impact that was introduced by NEF, a UK-based economic think tank promoting social, economic and environmental justice. It ranks 140 countries according to “what matters most — sustainable wellbeing for all”. This is how HPI is calculated: It’s ...

Motivation I have had a lot of fun exploring The US cities’ Crime data via their Open Data portals. Because Toronto’s crime data was simply not available. Not until the summer of this year, Toronto police launch a public safety data portal to increase transparency between the public and ...

Market Basket Analysis is one of the key techniques used by large retailers to uncover associations between items. It works by looking for combinations of items that occur together frequently in transactions. To put it another way, it allows retailers to identify relationships between the items that people buy. Association ...

Introduction Samuel Langhorne Clemens, otherwise known as Mark Twain, is one of the most important American writers.”The Adventures of Tom Sawyer” is probably one of my most favorite books in all English literature. Happy to see that Twain’...

In machine learning and natural language processing, A “topic” consists of a cluster of words that frequently occur together. A topic model is a type of statistical model for discovering the abstract “topics” that occur in a collection of ...

Introduction Hacker News is one of my favorite sites to catch up on technology and startup news, but navigating the minimalistic website can be sometimes tedious. Therefore, my plan in this post is to introduce you that how this social news site ...

Setup This project details our analysis of the movie dataset that contains information from Rotten Tomatos and IMDB for a random sample of movies. The purpose of this project is to develop a multiple linear regression model to understand what att...

I recently came across a R package called “unvote” that consists the voting history of countries in the United Nations General Assembly from 1946 to 2015. The packaged was developed by David Robinson. Explore the data library(ggplot2) librar...

Setup Load packages library(ggplot2) library(dplyr) library(statsr) Load data load("gss.rdata") Part 1: Data Background The General Social Survey (GSS) is a sociological survey used to collect information and keep a historical record of the...

Warren Buffett released the most recent version of his annual letter to Berkshire Hathaway shareholders a couple of months ago. After reading a post regarding a sentiment analysis of Mr Warren Buffett’s annual shareholder letters, and I am also...

There’s rightly been a lot of attention paid to text mining. Text mining is the data analysis of natural language works (articles, books, etc.), using text as a form of data, joined with the numeric analysis. Two years ago, TheStreet claimed th...

The Happy Planet Index (HPI) is an index of human well-being and environmental impact that was introduced by NEF, a UK-based economic think tank promoting social, economic and environmental justice. The index is weighted to give progressively high...