Articles by Amar Gondaliya

SparkR with Rstudio in Ubuntu 12.04

July 3, 2015 | 0 Comments

Welcome to the blog post! It’s been long time since I wrote last post. I was recently searching about big data with R and I found sparkR package. Few months back I heard about it and it was a separate project on github. Databricks is actively working on sparkR ... [Read more...]

Predictive analysis in eCommerce part-3

January 13, 2015 | 0 Comments

Welcome to the third part of series posts. In previous post, I discussed about the data points which we require to perform predictive analysis. In this post I will discuss about the solution approach along with required methodology and its implementation in R. Before we move ahead in this part, ... [Read more...]

Build Predictive Model on Big data: Using R and MySQL Part-3

September 21, 2014 | 0 Comments

Welcome to last part of the series post again! In previous part I discussed about the solutions to the questions mentioned in first part. In this part, we will implement whole scenario using R and MySQL together and see how we can process bigdata(computationally ) Let us recall those questions ... [Read more...]

Build Predictive Model on Big data: Using R and MySQL Part-2

September 21, 2014 | 0 Comments

Welcome to the second part of the series blog posts. In first part we tried to understand the challenges of fitting predictive model to the large dataset. In this post I will discuss about the solution approach to that challenges. Let’s start rolling. As machine learning technique requires accessing ... [Read more...]

Build Predictive Model on Big data: Using R and MySQL Part-1

September 21, 2014 | 0 Comments

Wellcome to the series blog posts. Since long time, I am writing post on Machine learning with R. Today I am gonna discuss on big data problem while fitting machine learning on it and its solution using MySQL and R. Before we jump directly to solution, let us discuss about ... [Read more...]

Regularization implementation in R : Bais and Variance diagnosis

May 22, 2014 | 0 Comments

Welcome to this blog post. In previous posts I discussed about the linear regression and logistic regression in detail. We used Andrew NG’s ML class dataset to fit linear regression and logistic regression. We also discussed about step by step implementation in R along with cost function and gradient ... [Read more...]

Predictive analysis in ecommerce

March 31, 2014 | 0 Comments

Welcome to the blog post! We all know the predictive analysis is very hot topic now days. Everyone is looking for how the power of predictive analysis can be used in their business and get their business questions solved.  Recently, I was doing study on the predictive analysis in ecommerce. ... [Read more...]

Logistic Regression with R: step by step implementation part-2

December 8, 2013 | 0 Comments

Welcome to the second part of series blog posts! In previous part, we discussed on the concept of the logistic regression and its mathematical formulation. Now, we will apply that learning here and try to implement step by step in R. (If you know concept of logistic regression then move ... [Read more...]

Logistic Regression with R: step by step implementation part-1

November 30, 2013 | 0 Comments

Very warm welcome to first part of my series blog posts. In previous blog post, we discussed about concept of the linear regression and its mathematical model representation.  We also tried to implement linear regression in R step by step. In this post I will discuss about the logistic regression  ... [Read more...]

Linear Regression with R : step by step implementation part-2

November 16, 2013 | 0 Comments

Welcome to the second part! In previous part, we understood Linear regression, cost function and gradient descent. In this part we will implement whole process in R step by step using example data set. I will use the data set provided in the machine learning class assignment. We will implement ... [Read more...]

Linear Regression with R : step by step implementation part-1

November 16, 2013 | 0 Comments

Welcome to the first part of my series blog post. In this post, I will discuss about how to implement linear regression step by step in R by understanding the concept of regression. I will try to explain the concept of linear regression in very short manner and try to ... [Read more...]

Predictive analysis on Web Analytics tool data

July 3, 2013 | 0 Comments

In our previous webinar, we discussed on predictive analytics and basic things to perform predictive analysis. We also discussed on an eCommerce problem and how it can be solved using predictive analysis. In this post, I will explain R script that I used to perform predictive analysis during webinar. Before ... [Read more...]

Predict User’s Return Visit within a day part-3

October 22, 2012 | 0 Comments

Welcome to the last part of the series on predicting user’s revisit to the website. In the  first part of series, I generated the logistic regression model for prediction problem whether a user will come back on  website in next 24 hours. In the second part, I discussed about model ... [Read more...]

Predict User’s Return Visit within a day part-2

October 22, 2012 | 0 Comments

Welcome to the second part of the series on predicting user’s revisit to the website. In my earlier blog Logistic Regression with R, I discussed what is logistic regression. In the first part of the series, we applied logistic regression to available data set. The problem statement there was ... [Read more...]

Predict User’s Return Visit within a day part-1

October 22, 2012 | 0 Comments

In my earlier blog, I have discussed about what is logistic regression? And how logistic model is generated in R? Now we will apply that learning on a specific problem of prediction. In this post, I will create a basic model to predict whether a user will return on website ... [Read more...]

Logistic Regression with R

October 21, 2012 | 0 Comments

Logistic Regression In my first blog post, I have explained about the what is regression? And how linear regression model is generated in R? In this post, I will explain what is logistic regression? And how the logistic regression model is generated in R? Let’s first understand logistic regression. ... [Read more...]

Linear Regression using R

September 26, 2012 | 0 Comments

Regression Through this post I am going to explain How Linear Regression works? Let us start with what is regression and how it works? Regression is widely used for prediction and forecasting in field of machine learning. Focus of regression is on the relationship between dependent and one or more ... [Read more...]

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