Manish Kumar Barnwal
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  • Bengaluru
  • India
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Welcome, Manish Barnwal!

Profile Information

Short Bio:
I am a Senior Statistical Analyst at @WalmartLabs. In am a graduate from IIT Kharagpur with a Masters in Mathematics and Computing. I joined @WalmartLabs in July 2014 where I have been working mostly on supply chain projects and have been deploying machine learning models across Hadoop cluster.

My interests include statistics, machine learning, big data, and programming in R. I have worked a lot on R, H2O, Hadoop Streaming, Hive, and Spark.
Job Title:
Sr. Statistical Analyst
LinkedIn Profile:
Finding a new position, Networking

Manish Kumar Barnwal's Blog

The essence of machine learning is function estimation

Posted on June 6, 2017 at 5:00am 1 Comment

Machine learning is cool. There is no denying in that. In this post we will try to make it a little uncool, well it will still be cool but you may start looking at it differently. Machine learning is not a black box. It is intuitive and this post is just to convey that. 

If I give you this function f(x) = x^2 + log(x) and ask you to tell me what will be f(2), you will first laugh at me and then run away to do something important. This is trivial for you,…


Random Forests explained intuitively

Posted on June 1, 2017 at 12:30am 4 Comments

Random Forests algorithm has always fascinated me. I like how this algorithm can be easily explained to anyone without much hassle. One quick example, I use very frequently to explain the working of random forests is the way a company has multiple rounds of interview to hire a candidate. Let me elaborate. 

Say, you appeared for the position of Statistical analyst at WalmartLabs. Now like most of the companies, you don't just have one round of interview. You…


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