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Blog Posts

The Perceptron Algorithm explained with Python code

Posted by ahmet taspinar on December 22, 2016 at 10:30am

Are Lottery Winning Numbers Really Random?

Posted by Vincent Granville on December 23, 2016 at 8:30pm — 7 Comments

How to build a search engine: Part 4

Posted by Vivek Kalyanarangan on January 10, 2017 at 1:00am

Fake data science

Posted by Vincent Granville on February 11, 2013 at 11:00pm — 6 Comments

Deep Learning in Python: Getting Started

Posted by Malia Keirsey on December 5, 2016 at 12:00pm

200 machine learning and data science resources

Posted by Vincent Granville on December 20, 2014 at 3:30pm

What MapReduce can't do

Posted by Vincent Granville on January 31, 2013 at 10:30pm — 8 Comments

Regression Analysis using R explained

Posted by suresh kumar Gorakala on December 26, 2014 at 12:43pm — 4 Comments

The 8 worst predictive modeling techniques

Posted by Vincent Granville on September 23, 2012 at 11:00am — 30 Comments

4 open source data mining tools (with GUI)

Posted by Bruno M on April 21, 2009 at 9:30am — 1 Comment


Challenge: Representation of Numbers as Infinite Products

This is our new challenge of the week. Previous challenges can be found here. While infinite products are…Continue

Started by Vincent Granville in Data Mining Software Jan 4.

4 Great Articles Posted This Week

By data science practitioners and rock star data scientists. Designing better algorithms: 5 case studiesIn this article, using a few examples and solutions, I show that the "best" algorithm is many times not what data scientists or management think…Continue

Started by Vincent Granville in Data Mining Software Nov 1, 2016.

Logistic Regression: why KS drop a lot after 2 months?

Dear all ,After I set up a logistic regression ,KS =43, but after 2 months,when i tested the new population , KS = 31, what will be the reasons?It is a default model.Continue

Started by FRANK in Data Mining Software Sep 27, 2016.

Interesting Math Brain Teaser 1 Reply

We see them all the times, some companies are still using them to hire people - a bad idea in my opinion. Anyway I've found this one posted on Facebook by one of my friends, and supposedly it went viral and was seen more than a million times. I've…Continue

Started by Vincent Granville in Data Mining Software. Last reply by Anand LS Sep 26, 2016.

Can you explain this mathematical paradox?

The formula e^{Pi * i) = -1 (see picture below) has been deemed one of the most beautiful mathematical equations, see for example a Quora discussion on the…Continue

Started by Vincent Granville in Data Mining Software Sep 5, 2016.

Market Mix Models : Confidence in coefficients

In market mix models, my sales(y) depends on 4 promotions(p1--p4). Let (b11, b21, b31, b41 ) be the coefficients of p1--p4 in one iteration and (b12, b22, b32, b42 ) be the coefficients in the second iteration. I check the validity of the model…Continue

Tags: effects, model, random, attribution, mixed

Started by Raghu Chittari in Business Analytics Jun 19, 2016.


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