Simplex

This program computes the projection of any n-dimensional vector y onto the canonical simplex Dn defined by Dn:={x: x n-dimensional vector, 0

This is a single M-file that implements a Nelder-Mead simplex minimizer. It makes use of MATLAB's persistent variables to create a "state machine" implementation. This allows entire minimization programs to be written as MATLAB scripts, as it does not require a function to be defined and passed...

It's a function that finds the minimum value of a two variables objective function with a deterministic zero order algorithm: simplex method. The input variables are:-fun: inline function of the objective function-init_point: initial point for the simplex method-step_size: initial dimension of...


Platforms: Matlab

This function is able to detect almost all types of properties/characteristics present in an LPP such as unbounded solution, alternate optima, degenaracy/cycling and infeasibilty. It only fails to work when there are redundant constraints present in the problem. However, it is rare and can be...


Platforms: Matlab

Generic Lexer which along with a language definition (.slx) file, constitutes Yacc/Bison compatible, custom lexical parser. It is ~1/3 the size of an equivalent Flex Lexer, resulting in a smaller compiler, and simpler yet more powerful lexical definition.


Platforms: Windows, Mac, Linux

Simplex-in-PHP are PHP scripts that solve small linear programming and integer linear programming problems executing the simplex method step by step, printing the tableau and drawing the graphical analysis.Useful for students in Operational Research.


Platforms: Windows, Mac, *nix, PHP, BSD Solaris

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

Consider the digraph with N vertices and M arcsN Vertices of the graph is expressed by the numbers 1,d-deTZ,N.Given the capacities of arcs, the demand functions of vertices and the cost functions of the arcs, then define the flow network of the given flow network.This function computes the...


Platforms: Matlab

This modification of fminsearch solves an issue with this simplex implementation when the function to minimize is smooth at a high scale, but rough at a low scale, i.e. when plotted with the parameters axis being (?10,10), there is a clear global extremum, but when zoomed (-0.1,0.1), the function...


Platforms: Matlab

SIMPGRIDSEARCH Multi-dimensional unconstrained nonlinear minimization using grid search + Simplex method. X = SIMPGDSEARCH(OBJFUN,GDVALUES) returns a vector X that is a minimizer of the function described in OBJFUN (usually an m file: OBJFUN.M).See OBJFUN_DEMO.M for how to write an objective...


Platforms: Matlab

The Logistic-Normal distribution [1] is a distribution over a simplex which forms a richer class of distributions than Dirichlets and better captures intercomponent correlations. We present the method for fitting a Hierarchical Logistic-Normal (HLN) distribution given by Hoff [2].Instructions:1....


Platforms: Matlab

The aim of this simple benchmark is to illustrate the interest of restarting Nelder-Mead locally, from the last solution found, until no improvement is reached (to a given accuracy).Also, it shows that fminsearch has great difficulties at minimizing the most simple, smooth quadractic, objective...


Platforms: Matlab

Entropy_triangle is a function that implements two tools to analyze the behavior of multiple-class, or multi-class, classifiers by means of entropic measures on their confusion matrix or contingency table. First we obtain a balance equation on the entropies that captures interesting properties of...


Platforms: Matlab

FindGraph is a comprehensive graphing, curve fitting, and digitizing tool. FindGraph offers 12 generic fits, including linear regression, logistic functions, fourier approximation, rationals, neural networks, B-splines and parametric curves least squares approximations, plus a library of over 300...


Platforms: Windows

Blank Page Splitter separates scanned files when a blank page is found. It can batch process entire folders of multipage tiff images with the output after separation being either a PDF or Tiff image. It has a monitor function making it an ideal product for use with a copier that scans to a...


Platforms: Windows

Refined procedures for solving and performing sensitivity analysis on uni and multi dimensional, local or global optimization problems which may or may not have linear constraints. Specialized Linear programming algorithms based on the Simplex Algorithm and duality are included along with a...


Platforms: Windows

The WMCP is a very odd experimental loop-based MIDI sequencer and drum machine. It lets you trigger external MIDI devices or your computer's awesomely simplex internal MIDI instruments with 128 separate beats each with its own controls for instrument, pitch, volume, stereo panning and...


Platforms: Windows

NMath Analysis contains classes for function minimization, root-finding, and linear programming. Product features include classes for minimizing univariate functions using golden section search and Brent's method, minimizing multivariate functions using the downhill simplex method, Powell's...


Platforms: Windows

Thread::Apartment is an apartment threading wrapper for Perl objects. SYNOPSIS package MyClass; use Thread::Apartment::Server; use base qw(Thread::Apartment::Server); sub new { # # the usual constructor # } # # mark some methods as simplex # sub get_simplex_methods { return {...


Platforms: *nix

Labels and equations are typeset with LaTeX, for high-quality PostScript output. A major advantage of Asymptote over other graphics packages is that it is a programming language, as opposed to just a graphics program. Features of Asymptote: # provides a portable standard for typesetting...


Platforms: Windows, Mac, *nix, C/C++, BSD Solaris