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Featured Blog Posts – June 2017 Archive (85)

Choice of K in K-fold Cross Validation for Classification in Financial Market

Cross Validation is often used as a tool for model selection across classifiers. As discussed in detail in the following paper https://ssrn.com/abstract=2967184, Cross Validation is typically performed in the following steps:

  • Step 1: Divide the original sample into K sub samples; each subsample typically has equal sample size and is referred to as one fold, altogether,…
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Added by Zhongmin Luo on June 2, 2017 at 7:00pm — 3 Comments

Artificial Intelligence in Enterprise – Using Meta-Vision to Disrupt Business Models for Products and Service

Introduction

Enterprise business models evolve over time for many reasons. The Internet has been a key factor driving enterprise business model change in recent years. The recent popularity of smartphones has disrupted consumer habits in travel, investment, entertainment, communication, social engagement, dining, shopping and many daily activities. Consequently, enterprises have been forced to change their business models. While some changes are progressive, others are…

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Added by Sing Koo on June 1, 2017 at 4:30pm — No Comments

Select Important Variables using Boruta Algorithm

This article explains how to select important variables using boruta package in R. Variable Selection is an important step in a predictive modeling project. It is also called 'Feature Selection'. Every private and public agency has started tracking data and collecting information of various attributes. It results to access to too many predictors for a predictive model. But not every variable is important for prediction of a particular task. Hence it is essential to…

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Added by Deepanshu Bhalla on June 1, 2017 at 9:00am — 1 Comment

The 6 Biggest Internet Problems We Need to Solve

Over the course of the last two decades, the internet has become nearly ubiquitous. From the ages of rare dial-up connections, our relatively reliable 4G network and endless options for free Wi-Fi at public establishments is its own kind of digital paradise. However, the internet isn’t perfect, and if we want to build a world where our entire population has fast,…

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Added by Larry Alton on June 1, 2017 at 7:00am — No Comments

Random Forests explained intuitively

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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Added by Manish Kumar Barnwal on June 1, 2017 at 12:30am — 4 Comments

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