Showing 120 open source projects for "nonlinear"

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  • 1

    LMath library

    Math library for Free Pascal and Lazarus.

    ...It is entirely written in Pascal and does not depend on external libraries. LMath provides routines and demo programs for numerical analysis, including mathematical functions, probabilities, matrices, optimization, linear and nonlinear equations, integration, Fast Fourier Transform, random numbers, curve fitting, statistics and graphics. It is organized s set of lazarus packages which makes it easily extensible and helps to include only really needed features in your project.
    Downloads: 4 This Week
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  • 2

    GRAMPC

    A gradient-based augmented Lagrangian framework for embedded NMPC

    GRAMPC is a nonlinear MPC framework that is suitable for dynamical systems with sampling times in the (sub)millisecond range and that allows for an efficient implementation on embedded hardware. The algorithm is based on an augmented Lagrangian formulation with a tailored gradient method for the inner minimization problem. GRAMPC is implemented in plain C with an additional interface to C++ and MATLAB/Simulink.
    Downloads: 2 This Week
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  • 3
    SimulaBeta

    SimulaBeta

    A simulation program for insulin-glucose homeostasis.

    SimulaBeta is a simulation program for insulin-glucose feedback control. It is based on a nonlinear MiMe-NoCoDI model.
    Downloads: 6 This Week
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  • 4
    Video of Death
    Video of Death is a nonlinear video editing software. You must install FFmpeg. 5-9-26: Found a bit of a bug, I'm not going to chase. If there is no visual in the timeline, audio won't play by it's self. 5-15-26: Fixed video/audio sync bug. Preview sync isn't perfect, but exported videos have perfect video/audio sync. 5-22-26: Had a major issue on exports, that didn't show in testing.
    Downloads: 0 This Week
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  • 5
    Eleana

    Eleana

    Program for the analysis of spectroscopic data, in particular EPR(ESR)

    ...Some of the basic functions include: baseline corrections, filtering, spectral clipping, integration / differentiation, pseudomodulation, filtering, etc. More advanced functions are: Forward / Inverse Fourier Transforms, Hilbert Transforms, Nonlinear Curve Fit, Global Analysis Fit of Multiple Curves, and many other. It is also possible to create your own plugins extending Eleana's functionality.
    Downloads: 2 This Week
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  • 6
    NAVAL-SEM

    NAVAL-SEM

    Free offline SEM software with HTMT, bootstrapping & exports

    NAVAL-SEM is a free, open-source, fully offline desktop application for Structural Equation Modeling (SEM), supporting both PLS-SEM and CB-SEM workflows. Designed for researchers, PhD scholars, professors, students, and analysts, it enables advanced quantitative research without subscriptions, cloud dependencies, or proprietary software restrictions. Key features include visual drag-and-drop model building, bootstrapping, mediation analysis, HTMT, AVE, Composite Reliability (CR),...
    Downloads: 16 This Week
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  • 7
    basic_numerical_methods

    basic_numerical_methods

    Didactic application to aid students in learning Numerical Methods;

    A practical tool (for students and engineers) to foresee the result of calculus exercises. Calculation and visualization numerical methods for nonlinear equation, ODE, integration, linear system, polynomial fitting,.....
    Downloads: 1 This Week
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  • 8
    Adaptive Simulated Annealing (ASA)

    Adaptive Simulated Annealing (ASA)

    simulated annealing optimization and importance-sampling

    Adaptive Simulated Annealing (ASA) is a C-language code that finds the best global fit of a nonlinear cost-function over a D-dimensional space. ASA has over 100 OPTIONS to provide robust tuning over many classes of nonlinear stochastic systems.
    Downloads: 0 This Week
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  • 9
    PRIMA

    PRIMA

    PRIMA is a package for solving general nonlinear optimization problems

    PRIMA is a package for solving general nonlinear optimization problems without using derivatives. It provides the reference implementation for Powell's derivative-free optimization methods, i.e., COBYLA, UOBYQA, NEWUOA, BOBYQA, and LINCOA. PRIMA means Reference Implementation for Powell's methods with Modernization and Amelioration, P for Powell. PRIMA is a package for solving general nonlinear optimization problems without using derivatives.
    Downloads: 0 This Week
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  • 10
    NLIGA

    NLIGA

    Open source Matlab code for nonlinear isogeometric analysis

    A unified framework, NLIGA (Non-Linear Isogeometric Analysis), is developed for mainly solving two and three-dimensional nonlinear problems on the MATLAB platform by using isogeometric analysis (IGA). Nonlinear hyperelastic and elastoplastic materials are primarily considered at this stage. Newton-Raphson method is used to solve the nonlinear governing equations. A series of benchmark examples are performed to validate the procedures. The visualization procedures are also developed to visualize the obtained results including displacements, stresses and numerical errors. ...
    Downloads: 2 This Week
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  • 11
    Algorithms Math Models

    Algorithms Math Models

    MATLAB implementations of algorithms

    Algorithms_MathModels is a large MATLAB collection of algorithms and solved examples targeted at students and teams preparing for mathematical modeling competitions (national and international contests like MCM/ICM). The repository gathers implementations and case studies across many topics commonly used in contest solutions: optimization (linear, integer, goal and nonlinear programming), heuristic and metaheuristic methods (simulated annealing, genetic algorithms, immune algorithms), neural networks and time-series methods, interpolation and regression, graph theory, cellular automata, grey systems, fuzzy models, partial/ordinary differential equations, and multivariate analysis, among others. The codebase is organized into topic folders (e.g., HeuristicAlgorithm, IntegerProgramming, NeuralNetwork, TimeSeries) and includes dozens of worked examples and links to textbook/source materials that the author used to assemble the collection.
    Downloads: 0 This Week
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  • 12
    OptimTraj

    OptimTraj

    A trajectory optimization library for Matlab

    OptimTraj is a MATLAB toolbox for solving trajectory optimization problems. It supports direct collocation, shooting methods, and pseudospectral methods for finding optimal control inputs and system trajectories. It is useful for robotics, aerospace, biomechanics, and any domain requiring time-optimal or energy-optimal motion planning.
    Downloads: 0 This Week
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  • 13
    Nonlinear Dynamics

    Nonlinear Dynamics

    A concise introduction interlaced with code

    This repository holds material related with the textbook Nonlinear Dynamics: A Concise Introduction Interlaced with code, co-authored by George Datseris and Ulrich Parlitz. The textbook will be published by Springer-Nature, in the series Undergraduate Lecture Notes in Physics.
    Downloads: 1 This Week
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  • 14
    ManifoldLearning

    ManifoldLearning

    Package for manifold learning and nonlinear dimensionality reduction

    A Julia package for manifold learning and nonlinear dimensionality reduction. Most of the methods use k-nearest neighbors method for constructing local subspace representation. By default, neighbors are computed from a distance matrix of a dataset. This is not an efficient method, especially, for large datasets.
    Downloads: 1 This Week
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  • 15
    AlphaPlot

    AlphaPlot

    Interactive scientific graphing and data analysis software.

    Alpha Plot can generate different types of 2D and 3D plots (such as line, scatter, bar, pie, and surface plots) from data that is either imported from ASCII files, entered by hand, or calculated using formulas. The data is held in spreadsheets which are referred to as tables with column-based data (typically X and Y values for 2D plots) or matrices (for 3D plots). The spreadsheets as well as graphs and note windows are gathered in a project and can be organized using folders. The built-in...
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    Downloads: 35 This Week
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  • 16
    TimeseriesPrediction.jl

    TimeseriesPrediction.jl

    Prediction of timeseries using methods of nonlinear dynamics

    Repository for predicting time series using methods from nonlinear dynamics and time series analysis. It uses DelayEmbeddings.
    Downloads: 0 This Week
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  • 17
    CHOW Phaser

    CHOW Phaser

    Phaser effect based loosely on the Schulte Compact Phasing 'A'

    ChowPhaser is an open-source audio plugin that emulates the classic Schulte Compact Phasing 'A' effect. It offers a unique phasing effect with nonlinear feedback and modulation capabilities, suitable for various audio processing applications.
    Downloads: 0 This Week
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  • 18
    ipfs-api-mount

    ipfs-api-mount

    Mount IPFS directory as local FS

    ...This is similar to ipfs mount provided in go-ipfs. ipfs-api-mount uses node API for listing directories and reading objects. Objects are decoded and file structure is created localy (not in IPFS node). Caching is added on objects level. In case of nonlinear file access with many small reads there is a risk of cache thrashing. If this occurs performance will be much worst than without cache. When using the command you can adjust cache size to get best performance.
    Downloads: 0 This Week
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  • 19

    Gap-SPH

    Basic SPH solver for 3D subsonic fluid flow models

    This solver programmed in C applies the Smoothed Particle Hydrodynamics method to subsonic incompressible 3d fluid flow. Viscosity is updated every half-time step to account for nonlinear behavior of one of the phases and all solid boundaries are modeled using the virtual particle method. A basic all-pair search algorithm is used to determine pair lists. The purpose of this self-contained solver is to further develop the code to optimize it to the case of river bedload dynamics. Parallel programming directives have been added where applicable. ...
    Downloads: 0 This Week
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  • 20
    NLOptControl.jl

    NLOptControl.jl

    nonlinear control optimization tool

    This software solves nonlinear control problems at a high level very quickly.
    Downloads: 0 This Week
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  • 21
    QtiPlot
    QtiPlot is a user-friendly, platform independent data analysis and visualization application similar to the non-free Windows program Origin.
    Downloads: 24 This Week
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  • 22
    AdaAutoDiff

    AdaAutoDiff

    C++ Templates and Ada Package for Automatic Differentiation

    Operators are overloaded so that a normal looking function definition provides access to not only evaluations of itself, but to evaluations of any of its analytic derivatives. Automatic differentiation means the user does not need to define the analytic expressions for all the various partial derivatives. It also means that those complex expressions are essentially calculated at compile time, and merely evaluated at runtime. First order derivatives only, forward...
    Downloads: 0 This Week
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  • 23
    JuliaFEM.jl

    JuliaFEM.jl

    The JuliaFEM software library is a framework

    ...It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. The basic design principle is: that everything is nonlinear. All physics models are nonlinear from which the linearization are made as special cases.
    Downloads: 3 This Week
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  • 24
    GSMLBook

    GSMLBook

    Recipes for basic machine learning algorithms using sklearn in jupyter

    ...The emphasis is primarily on learning to use existing libraries such as Scikit-Learn with easy recipes and existing data files that can found on-line. Topics include linear, multilinear, polynomial, stepwise, lasso, ridge, and logistic regression; ROC curves and measures of binary classification; nonlinear regression (including an introduction to gradient descent); classification and regression trees; random forests;  neural networks; probabilistic methods (KNN, naive Bayes', QDA, LDA); dimensionality reduction with PCA; support vector machines; and clustering with K-Means, hierarchical, and DBScan. Appendices provide a review of probability and linear algebra. ...
    Downloads: 0 This Week
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  • 25

    BNNPT

    A powerful method for nonlinear dependence of two continuous variables

    Testing dependence/correlation of two variables is one of the fundamental tasks in statistics. In this work, we proposed a powerful method for nonlinear dependence of two continuous variables (X and Y). We addressed this research question by using BNNPT (Bagging Nearest-Neighbor Prediction Test, software available at https://sourceforge.net/projects/bnnpt/). In the BNNPT framework, we first used the value of X to construct a bagging neighborhood structure. And then, we got the out of bag estimator of Y based on the bagging neighborhood structure. ...
    Downloads: 0 This Week
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