oracle aide

April 17, 2013

One tree diagram is worth 1000 words.

Filed under: bayes, statistics, Uncategorized — oracleaide @ 3:09 am

This is a graphical solution for the problem 3 in the 2nd problem set of the Udacity Statistics 101.


The hardest part about this problem is to translate it from human language to human-friendly language.

Solution for the problem 3 in the 2nd problem set, udacity, statistics 101.


January 6, 2013

A graphic solver for Bayesian problems using Venn Pie Charts

Filed under: bayes, statistics — oracleaide @ 5:17 am

Here is a link to another HTML5 demo – a Venn Pie Chart  showing solutions for simple Bayesian problems.

The point I am trying to make is that solution is the ratio between the areas of the silver and gray sectors, or, rather, lengths of corresponding arcs.


January 3, 2013

Using Venn Pie Chart to illustrate the classic Bayesian mammography problem.

Filed under: html, statistics — Tags: — oracleaide @ 8:42 pm

Here is a link to the promised Venn Pie Chart “Applet” and its screenshot:


Some comments for the updated HTML5 Venn Pie Chart  at


January 2, 2013

A statistical Rorschach test

Filed under: fun, social engineering, statistics — oracleaide @ 8:20 pm

Mean ape.

Venn Pie Chart demo with HTML5

Filed under: html, statistics — Tags: , — oracleaide @ 2:50 am

Here is a  demo of a Venn Pie Chart applet, built with HTML5.

Of course, old browsers that do not support HTML5 will not show anything.

The file is hosted at using the “enable public folder trick” (just click


December 26, 2012

A Venn Pie (Using Venn pies to illustrate Bayes’ theorem)

The Bayes’ law is very easy to understand when it is explained visually. Venn diagrams are a very popular way to represent relations between sets in the Bayes’ theorem.

Unfortunately, Venn diagrams are inefficient in showing ratios.


The best kind of diagrams to show ratios are the pie charts.

Combining Venn and Pie – by allowing pie sectors to overlap – makes diagrams more descriptive and illustrations of Bayes’ theorem – more intuitive.



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