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Mahalanobis software
 

Mahalanobis

Added: December 10, 2013 | Visits: 322

Mahalanobis Distance Return mahalanobis distance of two data matrices A and B (row = object, column = feature)% @author: Kardi Teknomo% http://people.revoledu.com/kardi/index.htmlSee more explanation in the Mahalanobis Distance tutorial http://people.revoledu.com/kardi/tutorial/...isDistance.html


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (21): Mahalanobis Distance Download

Information loss of the Mahalanobis distance in high dimensions: Matlab implementation The Mahalanobis distance between a pattern measurement vector of dimensionality D and the center of the class it belongs to is distributed as a chi^2 with D degrees of freedom, when an infinite training set is used. However, the distribution of Mahalanobis distance becomes either Fisher or Beta...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (21): Information loss of the Mahalanobis distance in high dimensions: Matlab implementation Download

Added: December 10, 2013 | Visits: 274

Covariance matrix Return covariance matrix for given data matrix X (row = object, column = feature)% @author: Kardi Teknomo% http://people.revoledu.com/kardi/index.htmlSee the usage for Mahalanobis distance computation in http://people.revoledu.com/kardi/tutorial/...isDistance.html


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (23): Covariance matrix Download

Added: May 15, 2013 | Visits: 190

moutlier1 This test is based on the Wilks'method (1963) designed for detection of a single outlier from a normal multivariate sample and approaching the maximun squared Mahalanobis distance to a F distribution function by the Yang and Lee (1987) formulation. A significative squared Mahalanobis distance...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (18): moutlier1 Download

Added: June 21, 2013 | Visits: 237

Mulnortest On the literature there are available several tests of the multivariate normality (ca. 50). Among them is the graphic approach based on a chi-square quantile-quantile plot of the observations' squared Mahalanobis distances. Besides the graphic q-q approaching, in this file we proposes an...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (18): Mulnortest Download

Added: September 02, 2013 | Visits: 274

Feature Selection using Matlab The DEMO includes 5 feature selection algorithms:d-deD? Sequential Forward Selection (SFS)d-deD? Sequential Floating Forward Selection (SFFS)d-deD? Sequential Backward Selection (SBS)d-deD? Sequential Floating Backward Selection (SFBS)d-deD? ReliefFTwo CCR estimation methods:d-deD?...


Platforms: Matlab

License: Freeware Size: 3.23 MB Download (22): Feature Selection using Matlab Download

Added: July 29, 2013 | Visits: 280

Gaussian Mixture Modeling GUI (GMM DEMO) The Expectation-Maximization algorithm (EM) is widely used to find the parameters of a mixture of Gaussian probability density functions (pdfs) or briefly Gaussian components that fits the sample measurement vectors in maximum likelihood sense [1]. In our work, the expectation-maximization (EM)...


Platforms: Matlab

License: Freeware Size: 573.44 KB Download (18): Gaussian Mixture Modeling GUI (GMM DEMO) Download

Added: June 12, 2013 | Visits: 199

Mskekur Calculates the Mardia's multivariate skewness and kurtosis coefficients as well as their corresponding statistical tests. For large sample size the multivariate skewness is asymptotically distributed as a Chi-square random variable; here it is corrected for small sample size. Likewise, the...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 10 KB Download (18): Mskekur Download

Added: May 24, 2013 | Visits: 210

RAFisher1 Discriminant Analysis is a multivariate technique concerned with separating distinct sets of observations to previously defined groups; rather exploratory in nature, it is a separatory procedure. Here, we develop this technique considering normal populations with equal covariance matrices. So,...


Platforms: Matlab

License: Shareware Cost: $0.00 USD Size: 1003.52 KB Download (18): RAFisher1 Download