Blog Archives

Exploratory Data Analysis Using R (Part-I)

December 28, 2016
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Exploratory Data Analysis Using R (Part-I)

The greatest value of a picture is when it forces us to notice what we never expected to see. — John W. Tukey. Exploratory Data Analysis.Why do we use exploratory graphs in data analysis?Understand data propertiesFind patterns in dataSuggest mod...

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Sentimental Analysis of the First Presidential Debate of 2016 Using Machine Learning

September 27, 2016
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Sentimental Analysis of the First Presidential Debate of 2016 Using Machine Learning

This post analyzes sentiment of people towards the 2016 presidential candidates post the First Presidential Debate using Tweets. We focus on Tweets containing the names of Hillary Clinton and Donald Trump.Let’s load the required packageslibrary(twitteR)library(ROAuth)require(RCurl)library(stringr)library(tm)library(plyr)library(tm)library(wordcloud)Setting up Twitter Authenticationconsumer_key = "consumer_key"consumer_secret = "consumer_secret"token_secret = "token_secret"access_token = "access_token"authenticate Hillary Donald hillary_txt donald_txt NumTweets tweets head(tweets)#Converting it...

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Mastering the art of Data Preparation II

September 15, 2016
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Mastering the art of Data Preparation II

It is not the beauty of a building you should look at; it is the construction of the foundation that will stand the test of time. ~ David Allan CoeThis week we focus on getting data from MYSQL, HDF5, API and the WEB.Extracting Data from MYSQLMysql is one of the most widely used open source databases.The data is stored in tabular format...

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Mastering the Art of Data Preparation I

September 6, 2016
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Mastering the Art of Data Preparation I

Without a solid foundation, you’ll have trouble creating anything of value. ~ Erika OppenheimerAlthough building models to predict the future outcome is the ultimate goal of any study, getting the data and preparing it for analysis is the foundation based on which the models are built. Although often neglected, this quintessential step is of paramount importance for the success...

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