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Archive for the ‘Study’ Category

September 6th, 2010 - 08:58 § in Matlab, Study

Plotting in Matlab by groups or (labels)

How to plot in Matlab by labels? Suppose You have some data: 1st case – we have 1-d (dimension) data or vector, so the next step is to plot this vector: >plot(data,'b*'); Now You’ve made some classification using f.e. kmeans algorithm: >[IDX,C]=kmeans(data,5,'emptyaction','singleto[...]

August 1st, 2010 - 19:15 § in Matlab, Study

The list of some Matlab Tool Boxes

The list of some Matlab Tool Boxes from http://stommel.tamu.edu/~baum/toolboxes.html * ADCPtools - acoustic doppler current profiler data processing * AFDesign - designing analog and digital filters * AIRES - automatic integration of reusable embedded software * Air-Sea - air-sea flux estimates in o[...]

May 6th, 2010 - 10:25 § in Study, statistics

Covariance Matrix

Good description and simple explanation is given here Covariance matrix The variance of a variable is a measure of the dispersion of the values taken by the variable around its mean value. The covariance matrix generalizes the concept of variance to random vectors, or sets of random variables. PCA [...]

January 13th, 2010 - 09:46 § in Study

Bayes’ Rule

The snapshot from the sideshow: Click the image to enlarge Some information was taken from http://www.cs.bham.ac.uk/~axk/ML_new.htm[...]