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
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (46): Projection onto simplex Download |
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...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (40): State-machine simplex minimizer Download |
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
License: Freeware | Size: 10 KB | Download (49): Simple example of the Simplex Method Download |
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
License: Freeware | Size: 10 KB | Download (49): Revised Simplex Method. Download |
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
License: Freeware | Size: 31.09 KB | Download (47): SimpLex Lexical Parser Download |
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
License: Freeware | Download (120): SimplexInPHP Download |
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
License: Freeware | Size: 10 KB | Download (52): linprog Download |
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
License: Freeware | Size: 10 KB | Download (54): the Network Simplex Algorithm Download |
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
License: Freeware | Size: 10 KB | Download (48): fminsearch modifed for higher scale smooth function Download |
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
License: Freeware | Size: 10 KB | Download (47): SIMPGDSEARCH Download |
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
License: Freeware | Size: 73.73 KB | Download (96): Thread::Apartment Download |
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
License: Freeware | Download (109): Asymptote Download |
Asymptote is a powerful descriptive vector graphics language that provides a natural coordinate-based framework for technical drawing. Labels and equations are typeset with LaTeX, for high-quality PostScript output.Asymptote is a graphic tool that provides a standard for typesetting mathematical...
Platforms: Mac
License: Freeware | Size: 3.7 MB | Download (482): Asymptote for Mac OS X Download |
BestCurFit calculates the parameters of 12 curves using the method of Linear Least Squares, fitting each curve to user data. The nonlinear equations are linearized. The obtained parameters are used for following optimization procedure using Simplex and Gauss-Newton algorithm. If it does not...
Platforms: Windows
License: Freeware | Size: 1.81 MB | Download (53): BestCurFit Download |
The main features are: Plot. For each immitance types (Z, Y, C or M), the data can be plotted in the complex plane, as well their real, imaginary parts or their magnitude in function of the frequency (Log/Log). Simulation. The possibilities are almost infinite. Over the classical R, C, L...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (52): ZfitGUI(varargin) fits and simulates impedance data Download |
Optimized Step Size Random Search(OSSRS) A random search method[1] for the optimization of a function of n variables. Can be used as a start-up before using a determistic method like Simplex method of Nelder and Mead to arrive at the region of the optimum and then switch to a deterministic...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (41): ossrs Download |
This is a (small) change to the current fminsearch routine to improve convergence.The current fminsearch selects n additional simplex points based on a small change in each variable. This implementation uses an adaptive procedure to select these n points while maintaining the correct relative...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (41): fminsearch2 Download |
DOLFIN is the C++/Python interface of FEniCS, providing a consistent PSE (Problem Solving Environment) for ordinary and partial differential equations. Features * Simple, consistent and intuitive object-oriented API in C++ or Python * Automatic and efficient evaluation of finite element...
Platforms: *nix
License: Freeware | Size: 7.21 MB | Download (40): DOLFIN Download |