Peter Chen
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  • San Diego, CA
  • United States
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Short Bio:
Data Science/Mining, Biz Analytics, Viz, Ex-Quant. Peter Chen did his undergrad at M.I.T. and grad school @ Harvard.
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Peter Chen's Blog

Experimenting with AWS Machine Learning for Classification

Posted on May 17, 2015 at 6:00pm 3 Comments

In this post, I'll explore the new AWS Machine Learning services.

The problem we are trying to solve is to classify auto accident severity given a set of features. I'll not go into further details of the data set and what classification algorithms,etc. here since the goal of this blog is to explore the new AWS Machine Learning service step by step.

In the next blog post, I'll explore another service: Microsoft Azure Machine…


Visualizing Nepal Earthquake: The Human Side of Data Science

Posted on April 25, 2015 at 10:00pm 1 Comment

1 The Tragedy

As most of you guys know, the country of Nepal has been hit with a powerful earthquake killing over 1,800 lives(as of this writing). Thousands are injured. Lives are disrupted. Historic temples, monuments, buildings are leveled.

I plead you to help whatever you can. Money. Time. Good wishes, thoughts, and prayers. Scroll to the end of this post for where you…


Finding Group Structures in Data using Unsupervised Machine Learning

Posted on April 4, 2015 at 6:00pm 0 Comments

1. Introduction

In this post, we’ll use an unsupervised machine learning technique called kmeans clustering to find naturual structures in our data. In the other blog posts, we used supervised machine learning techniques like logistic regression and linear regression to predict car prices or …


Predicting Flights Delay Using Supervised Learning, Logistic Regression

Posted on March 29, 2015 at 6:00pm 1 Comment

1. Introduction

In this post, we’ll use a supervised machine learning technique called logistic regression to predict delayed flights. But before we proceed, I like to give condolences to the family of the the victims of the Germanwings tragedy.

This analysis is conducted using a public data set that can be obtained here:…


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At 1:47pm on March 24, 2015, Kenneth D. Graves said…

Peter, that would be great, if possible.

Thanks for a great posting!



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