Search Results for "constraint solver"
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Showing 36 open source projects for "constraint solver"
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OR-Tools - Google Optimization Tools
Google's software suite for combinatorial optimization
Google Optimization Tools, also known as OR-Tools is an open-source, fast and portable software suite for solving combinatorial optimization problems. These encompass problems in vehicle routing, flows, integer and linear programming, and constraint programming. This suite contains a number of solvers, namely: a constraint programming solver; a linear programming solver; wrappers for commercial solvers (like Gurobi or CPLEX) and other open source solvers (SCIP, GLPK, etc.); among others. OR-Tools is written in C++, but comes with wrappers for Python, C# and Java. Once you model your problem in your preferred programming language, you can then use any of OR-Tools’ available solvers. ... -
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JaCoP is a Java Constraint Programming solver. It provides a significant number of (global) constraints to facilitate efficient modeling of combinatorial problems, as well as modular design of search. Documentation is available at project Web site. Please, note that the sources from version 4.0 are only available at GitHub.
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ECLiPSe CLP
ECLiPSe Constraint Logic Programming System
The ECLiPSe Constraint Logic Programming System is designed for solving combinatorial optimization problems, for the development of new constraint solver technology and their hybrids, and for the teaching of modelling, solving and search techniques. -
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YACS (Yet Another Constraint Solver) is a Java library and an object-oriented framework for constraint solvers. It supports propagating and solving of constraint satisfaction problems with finite and infinite domains (discrete values and real intervals).
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GNU Prolog
The GNU Prolog native compiler
GNU Prolog is a free implementation (under GPL) of the logic programming language PROLOG. It can compile to native machine code which is extremely fast in execution. Another feature is the included constraint solver. -
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ConstraintSolver.jl
ConstraintSolver in Julia
This package aims to be a constraint solver completely written in Julia. The concepts are more or less fully described on my blog OpenSourc.es. There is of course also the general user manual here which explains how to solve your model. -
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Solvespace
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
...Applications include: modeling 3d parts — draw with extrudes, revolves, helixes and Boolean (union / difference / intersection) operations modeling 2d parts — draw the part as a single section, and export DXF, PDF, SVG; use 3d assembly to verify fit 3d-printed parts — export the STL or other triangle mesh expected by most 3d printers preparing CAM data — export 2d vector art for a waterjet machine or laser cutter; or generate STEP or STL, for import into third-party CAM software for machining mechanism design — use the constraint solver to simulate planar or spatial linkages, with pin, ball, or slide joints plane and solid geometry — replace hand-solved trigonometry and spreadsheets with a live dimensioned drawing ORIGINAL SOURCE: https://solvespace.com/index.pl -
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SONNET
SONNET (integer) linear optimisation in .NET
...SONNET consists of two parts: 1) A .NET library that consists of .NET wrapper classes around existing COIN classes such as OsiSolverInterface. 2) A .NET library implemented in C# that adds a powerful (rudimentary) modelling API with classes like Model, Constraint, Variable, Expression, etc, and overloaded operators to allow for things like Model model = new Model(); Variable x = new Variable(); Variable y = new Variable(); model.Add(2 * x + 3 * y <= 10); model.Objective = 3 * x + y; Solver solver = new Solver(model, typeof(OsiClpSolverInterface)); solver.Maximize(); Console.WriteLine(solver.ToSolutionString()); -
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Volunteer workshift scheduler
Volunteer workshift scheduler for a helpline service
Code written in Python finds the best possible schedule for volunteers while incorporating constrains and special requirements using CP-SAT Solver (Constraint Programming - boolean SATisfiability problem Solver). Java version is in development. The problem Arranging volunteers for a helpline service for the period of one month. There are three types of work that could be done on the same day: Phone shift: Every day. Chat shift: Mondays and Wednesdays. ... -
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Battleship Puzzle False Clues
Creates a battleship puzzle with a twist - some numbers are false
Creates a battleship puzzle with a twist - some of the numbers beside the rows and columns are false clues. All of the false clues are either (+1) or (-1) relative to the true clues. Additional information provided to the solver is the annotation of segments of adjacent rows or columns as containing or non-containing a false clue, and the type of the false clue if one exists. For example a riddle can be composed of a standard 10*10 board with an annotation declaring the existance of one... -
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Grammar based Combinatorial Solver
Solver with Applications in Computer Network Systems Design
The solver performs an exhaustive search on the space defined using simple formal language grammar constructs to identify solutions that meet the objective and constraints. It can be used to easily define complex discrete multi-dimensional combinatorial problems that are otherwise difficult to model using Mixed Integer Linear Programming solvers. The solver does not make any assumptions on continuity of the search space. The solver is implemented in PHP. A GoJS based visualization is... -
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CSP
Constraint Satisfaction Problems solver
Solver solutions for constraint satisfaction problems (CSP): - CSP solver - CSP-based scheduler - CSP-based project management engine - CSP-based project management editor -
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GSS Engine
GSS engine
GSS is a JavaScript layout engine based on Grid Style Sheets (constraint CSS) using Cassowary constraint solver. It enables declarative relational layouts—expressing 'item A aligned to the right of item B'—and compiles these constraints into standard styles at runtime or build-time. Though experimental and labeled unstable, it showcases advanced layout paradigms beyond traditional CSS. -
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Z3-str
A Z3-Based String Constraint Solver
We moved to Github. This website only hosts previous releases. Please check https://github.com/z3str/Z3-str for the latest version. -
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HSolver is a program for verification of hybrid systems based on the constraint solver RSOLVER. Unlike other packages its correctness does not depend on floating point rounding errors.
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DisChoco
DisChoco: Distributed Constraint Reasoning Solver
DisChoco is a Distributed Constraint Reasoning Solver. Several Distributed Constraint Reasoning algorithms are implemented (like ABT, AFC, Adopt, ...). Users may easily implement and test their algorithms with DisChoco. contact: wahbi[at]users[dot]sourceforge[dot]net -
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JBernstein
JBernstein: Exploration techniques for non-linear constraint checking
...Concerning performance, the tool enables to check all examples in the PVS Bernstein testsuite within a second, which can be an order of magnitude faster than some other tools such as QEPCAD or REDLOG. Although JBernstein uses double, it offers automatic error-estimation capabilities (experimental) so that the generated result is correct (the solver may return unknown when the error-estimate is too large) -
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EasyCP
The easiest C++ way to deal with constraints !
EasyCP is a modern, user-friendly C++ library that lets you use constraint programming in a very natural way, taking advantage of its expressive power. Just model and let the CSP (Constraint Satisfaction Problem) solver do the job ! -
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Water Retention on Magic Squares Solver
Water Retention on Magic Squares with Constraint-Based Local Search
A Constraint-Based Local Search solver for the Water Retention on Magic Squares-problem. The problem is a very hard combinatorial optimisation problem, invented by Craig Knecht. More can be read about it at: http://en.wikipedia.org/wiki/Water_retention_on_mathematical_surfaces Craig's website for the problem: http://www.knechtmagicsquare.paulscomputing.com/ The solver is mainly based on the theory and ideas from my bachelor thesis, which I wrote at Uppsala University, Sweden, for the Astra Group which does research about Constraint Programming and related technologies: Water Retention on Magic Squares with Constraint-Based Local Search http://urn.kb.se/resolve?... -
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Processor Enhanced Recursive Dynamics
Processor Enhanced Robust Core Solver for Recursive Multibody Dynamics
Develop an efficient and robust recursive core evaluator and solver for large-scale constrained multibody dynamics, providing general-purpose capability with special-purpose performance. Processors embed model detail into runtime algorithms, minimizing rediscovery operations. Spatial algebra organizes and simplifies recursive algorithms. Gaussian Elimination with Complete Pivoting converts constraint Jacobian matrices and equations into Row-Reduced Echelon Form and partitions variables into Dependent/Independent sets. ... -
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A static checker that model checks the implementation of equality for an Eclipse Java Project.
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School Project. Development of a constraint program to schedule timetables using a school-made solver.
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