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PDL::Fit::LM is a Levenber-Marquardt fitting routine for PDL. Currently, only Levenberg-Marquardt fitting is implemented. Other procedures should be added as required. For a fairly concise overview on fitting see Numerical Recipes, chapter 15 "Modeling of data". SYNOPSIS use PDL::Fit::LM;...

DNS Flood Detector was developed to detect abusive usage levels on high traffic nameservers and to enable quick response in halting (among other things) the use of ones nameserver to facilitate spam. DNS Flood Detector uses libpcap (in non-promiscuous mode) to monitor incoming dns queries to a...

Math::BigInt::Calc is a pure Perl module to support Math::BigInt. SYNOPSIS Provides support for big integer calculations. Not intended to be used by other modules. Other modules which sport the same functions can also be used to support Math::BigInt, like Math::BigInt::GMP or...


Platforms: *nix

Language::XSB is a Perl module that allows you to use XSB from Perl. SYNOPSIS use Language::XSB :query; use Language::Prolog::Types::overload; use Language::Prolog::Sugar vars=>[qw(X Y Z)], functors=>{equal => =}, functors=>[qw(is)], chains=>{plus => +, orn => ;}; xsb_set_query(...


Platforms: *nix

Algorithm::Munkres is a Perl extension for Munkres solution to classical Assignment problem for square and rectangular matrices. This module extends the solution of Assignment problem for square matrices to rectangular matrices by padding zeros. Thus a rectangular matrix is converted to square...


Platforms: *nix

Math::Macopt is a Perl wrapper for macopt++, which is a conjugate gradient library. INSTALLATION The package can be installed by the standard PERL module installation procedure: perl Makefile.PL make make test make install Please noted that the original "macopt++" C++ source code is...


Platforms: *nix

PDL::Primitive Perl module contains primitive operations for pdl. This module provides some primitive and useful functions defined using PDL::PP and able to use the new indexing tricks. See PDL::Indexing for how to use indices creatively. For explanation of the signature format, see PDL::PP....


Platforms: *nix

InterMapper DataCenter is a stand-alone collection of services used alongside InterMapper. Currently, this includes the InterMapper Authentication server (IMAuth). InterMapper DataCenter runs entirely in the background on Mac OS X N a Unix daemon. InterMapper DataCenter starts when your computer...


Platforms: Mac

The function implement the 2D dyadic(Paley) ordered fast in-place Walsh-Hadamard transform, which can be used in signal processing, pattern recognition and Genetic alogorithms. This algorithm uses a Cooley-Tukey type signal flow graph and is implemented in N log2 Nadditions and subtractions. Data...


Platforms: Matlab

Function: Savitzky-Golay Smoothing and Differentiation Filter The Savitzky-Golay smoothing/differentiation filter (i.e., the polynomial smoothing/differentiation filter, or the least-squares smoothing/differentiation filters) optimally fit a set of data points to polynomials of different degrees....


Platforms: Matlab

the stationary signal f(t)=cos(2*pi*5*t)+ cos(2*pi*10*t)+ cos(2*pi*20*t)+ cos(2*pi*50*t)having frequencies of 5,10, 20and 50 Hz at any given time instant.MATLAB program can be implemented to plot the stationary signal mentioned above:Clear...


Platforms: Matlab

This m-file implements a M-point moving average system.The equation is:y(n)=(x(n)+x(n-1)+.....+x(n-M))/M;M is the order of the M-point moving average system.Syntax:y=mpointaverage(input,order)The argument 'input' is the input sequence.The argument 'order' is T,the order of the M-point moving...


Platforms: Matlab

A function that takes two sequences(vectors) as parameters and computes the circular convolution .x(n),h(n) are the vectors.The vectors need NOT be of equal lengths.If they are of unequal lengths, the shorter vector is appended with trailing zeros and then circular convolution is carried out.


Platforms: Matlab

This function gives the decimation matrix which after post mulitpling it with the given signal gives the downsampled version of the original signal...D = decimmtx(x,N)decimates the given signal by a factor of N.[D,y] = decimmtx(x,N)gives D as well as the decimated signal y


Platforms: Matlab

[cg, psg] = crandn(rgau,m)Generate correlated Gaussian sequences by Fourier synthesis.Input parameters:rgau = correlation function - length n/2m = number of realisationsOutput:cg = m x n matrix containing m sequences of n correlated variates from a zero mean, unit variance normal distributionpsg...


Platforms: Matlab

Convert ECI (CIS, Epoch J2000.0) Coordinates to WGS 84 (CTS, ECEF) Coordinates. This function has been vectorized for speed.Example Function Call:>> [r_ECEF v_ECEF] = ECItoECEF(JD,r_ECI,v_ECI);Where:JD is the Julian Date vector [1 x N] (units are in days)r_ECI is the position vector [3 x N] (any...


Platforms: Matlab

This directory contains a suite of files for performing the standard two phase simplex method on linear programming problems. The three files LINPROG.DOC, PHASEI.DOC and PHASEII.DOC are fully documented versions of the m-files LINPROG.M, PHASEI.M and PHASEII.DOC are fully documented versions of...


Platforms: Matlab

CON2VERT - convert a convex set of constraint inequalities into the set of vertices at the intersections of those inequalities;i.e., solve the "vertex enumeration" problem.V = con2vert(A,b)Converts the polytope (convex polygon, polyhedron, etc.) defined by the system of inequalities A*x = n (m...


Platforms: Matlab

RiskMetrics.m: Estimates the univariate or multivariate RiskMetrics. USAGE: rm = RiskMetrics(data,alpha) INPUTS: data = ( m x n ) vector lamba = the scale parameter method = Univariate or Multivariate OUTPUTS: rm = ( m x n ) volatility vector for the univariate case or an [( n x n )x m]...


Platforms: Matlab

A fast Gentle Adaboost classifier with two different weak-learners: i) decision stump and ii) perceptron. Multiclass is performed with the one-against-all strategy.Usage ------ model = gentleboost_model(X , y , [T] , [options]); Inputs ------- X Features matrix (d x N) y Labels (1 x N). If y...


Platforms: Matlab