Computational Intelligence, SS08 2 VO 442.070 + 1 RU 708.070 last updated:
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 Introduction to Matlab Neural Network Toolbox OCR with ANNs Adaptive Filters VC dimension Gaussian Statistics PCA, ICA, Blind Source Separation Hidden Markov Models Mixtures of Gaussians Automatic Speech Recognition
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# Gaussian Statistics and Unsupervised Learning

A Tutorial for the Course Computational Intelligence

### Abstract

This tutorial presents the properties of the Gaussian probability density function. Subsequently, supervised and unsupervised pattern recognition methods are treated. Supervised classification algorithms are based on a labeled data set. The knowledge about the class membership of this training data set is used for the classification of new samples. Unsupervised learning methods establish clusters from an unlabeled training data set. Clustering algorithms such as the -means, the EM (expectation-maximization) algorithm, and the Viterbi-EM algorithm are presented.

### Usage

To make full use of this tutorial you have to
1. download the file Gaussian.zip which contains this tutorial in printable format (PDF and ps.gz) and the accompanying Matlab programs.
2. Unzip Gaussian.zip which will generate a subdirectory named Gaussian/matlab where you can find all the Matlab programs.
3. Add the path Gaussian/matlab to the matlab search path, for example with a command like `addpath('C:\Work\Gaussian\matlab')` if you are using a Windows machine, or by using a command like `addpath('/home/jack/Gaussian/matlab')` if you are on a Unix/Linux machine.

### Sources

This tutorial is based on
• EPFL lab notes ``Introduction to Gaussian Statistics and Statistical Pattern Recognition'' by Hervé Bourlard, Sacha Krstulovic, and Mathew Magimai-Doss.