Algorithms

Machine Learning - Opinion and Text Mining by Naive Bayes Classifier

26 Apr 2018 by Mahsa Hassankashi

Best practice for opinion and Text Mining based on Naïve Bayesian Classifier.

Implementing K-Means Image Segmentation Algorithm

29 Aug 2017 by Arthur V. Ratz

How to implement k-means clustering algorithm to perform graphical raster image segmentation

Activation Key Class Library

16 May 2024 by Pavel Bashkardin

Management of cryptographic activation keys to protect your application

cryptography

Licenses

Simulator 6 Axis Articulated Robots

7 Apr 2014 by jurhas

A small simulator for a 6 axis articulated robot

Backgammon Artificial Intelligence

2 May 2022 by KristianEkman

How to build an AI which plays Backgammon

Implementing Auto-tiling Functionality in a Tile Map Editor

7 Sep 2010 by Colin Vella

This article presents an algorithm and data structures to implement auto-tiling as seen in RPG Maker, the Starcraft level editor, etc.

Karatsuba Long Multiplication Algorithm

11 Jan 2023 by Andrea Simonassi

A simple yet powerful multiplication algorithm

Edumatter-814: School Math Calculators and Equation Solvers

17 Feb 2015 by DrABELL

Educational software package for Microsoft Windows® 7/8 contains “5-in-1” School Math Calculators and Equation Solvers intended for students and educators

A Particle Swarm Optimizer In C#

6 Sep 2016 by George Swan

An artificial life algorithm that attempts to solve a problem by flying a swarm of entities through a range of possible solutions where each entity is guided by the performance of other members of the swarm

Design

Perceptual Hash based Image Comparison: Coded in "plain old C". An Anecdotal View

4 Jun 2023 by GeorgeDS

An anecdotal report describing issues encountered in coding a minimal perceptual hash capability, in plain old C, in to 35 year old rolling development, with the goal of running on a noob Win 10/11 installation.

The astounding Pickover's biomorphs

27 Nov 2017 by Miguel Diaz Kusztrich

An infinite set of biological shape fractals in the complex plain

Retro Game Cartography: Part Deux

9 Sep 2021 by Mladen Janković

Improved algorithm for reconstructing game world map from captured game play

Singular Values Decomposition (SVD) in C++11 by an Example

30 Dec 2018 by Arthur V. Ratz

SVD in C++11 explained with an example

Enumerating All Cycles in an Undirected Graph

9 Sep 2018 by Philipp Sch

Finding a fundamental Cycle Set forming a complete basis to enumerate all cycles of a given undirected graph

UnitParser

1 Jun 2018 by User 6679439

Comprehensive unit parsing library

Simple Fast Adaptive Grid to Accelerate Collision Detection between AABB of Particles

16 Apr 2022 by tugrulGtx

A walkthrough for a grid implementation of "particle in cell" problem to improve performance of axis-aligned bounding-box (AABB) collision checking in various scenarios

RLE: The Human Friendly Compression

16 Apr 2022 by Patrice T

RLE (Run Length Encoding): The Human Friendly Compression

text

compression

Hex 2048 - A Numbers Game - C#2022

6 Oct 2020 by Christ Kennedy

A graphically bouncy and colorful version of the popular numbers tile-sliding game

A Simple, Portable Yet Efficient Quicksort Implementation in C

13 Oct 2013 by Member 9294701

A simple, portable yet efficient Quicksort implementation in C

sorting

Bernoulli Factory Algorithms

2 Sep 2021 by Peter Occil

Algorithms to turn biased "coin flips" into biased "coin flips", and how to code them.

random

Content-Aware Image Resizing in JavaScript

19 Jan 2022 by trekhleb

JavaScript implementation of so-called Seam Carving algorithm for content-aware image resizing

Can QR Decomposition Be Actually Faster? Schwarz-Rutishauser Algorithm

3 Jan 2022 by Arthur V. Ratz

Optimizing the performance of the large-sized matrices QR factorization and eigendecomposition, using Schwarz-Rutishauser algorithm

Python Fourier Transform Helper Library

13 Apr 2022 by Steve Hageman

A Python Library to help make properly scaled Fourier Transforms including utility functions

Interval arithmetic using round-to-nearest mode (part 1 of n)

27 Oct 2015 by Daniel Pfeffer

A faster method for performing interval arithmetic

VS2013

cobj: Polymorphism in Plain C

7 Jun 2016 by GProssliner

cobj is a preprocessor based generator for interface based polymorphism

Corona SEIR Workbench

24 Apr 2022 by Marcus Müller

Pandemic SEIR and SEIRV modelling software and infrastructure for the Corona SARS-COV-2 COVID-19 disease with data from Johns-Hopkins-University CSSE, Robert Koch-Institute and vaccination data from Our World In Data.

Tides of Time Bot and Game – Application of Minimax (with Alpha Beta Pruning)

13 Mar 2019 by Oana Mancu

Any deterministic game can be broken down to its core functionalities. By understanding them, one can implement fundamental algorithms such as Minimax (with alpha beta pruning), thus paving the way towards a better AI opponent.

An Optimal Wagner-Fischer Algorithm For Approximate Strings Matching In Python And NumPy

16 Sep 2022 by Arthur V. Ratz

Compute the Levenshtein distance of literal strings effectively by using the Wagner-Fischer (two matrix rows-based) algorithm.

Fast and Stable Polynomial Root Finders - Part One

11 Oct 2023 by Henrik Vestermark

Practical implementation of a fast, robust and reliable polynomial root finder using Newton's method

EpForceDirectedGraph.cs- A 2D/3D force directed graph algorithm in C#

26 Oct 2014 by Chris La

A 2D/3D force directed graph algorithm in C#

Multi-pass Filter Cutoff Correction

26 Nov 2018 by Jonas Selling

Clarifying the use of multi-pass filter cutoff correction

Objective-C

Three Approaches for Machine Learning

4 Sep 2020 by Mosi_62

Logistic regression, back propagation and support vector machine in comparison on the Iris data set

Visual-Studio

Architect

syncronizing subtitles by using translation and time series algorithms

29 Sep 2013 by Amit Bezalel

Transfering subtitle synchronization from one subtitle file to another

C#4.0

Windows

Algorithmic approaches to solving the Pascal's Triangle and the Newton's Binomial

18 Aug 2014 by José Cintra

Some suggestions of algorithms for solving the Pascal Triangle, addressing iterative, recursive and functional paradigms

The Amazing Performance of C++17 Parallel Algorithms, is it Possible?

25 Nov 2018 by Bartlomiej Filipek

What performance can we get from C++17 parallel algorithms?

HotPoints - A New Method for 2D Polyline Vertex Smoothing

30 Apr 2021 by ADMGNS

An alternative method to Catmull-Rom, Chaikin or Bezier curve smoothing methods

Delphi

Windows

Universal implementation of BFS, DFS, Dijkstra and A-Star algorithms

15 Sep 2023 by optiklab1

I demonstrate with an actual implementation that well-known algorithms BFS, DFS, Dijkstra, and A-Star are essentially variations of the same algorithm.

Sound in games - Rooms

31 Jul 2012 by Kenneth Haugland

How to calculate a reverbration time in a room

Generic XOR-Coded Lists

4 Mar 2016 by JorgeLuisOrejel

This article is based on Chapter 2 of my unpublished textbook “Applied Algorithms and Data Structures.”

The New Era Of Clustering: CLOPE Algorithm in C#.NET

27 Apr 2018 by Arthur V. Ratz

In this article, we will formulate and discuss CLOPE data mining clustering algorithm that allows to drastically increase the quality and efficiency of categorized data clustering and can be easily used for recommendation-specific purposes

Ms. Wordbler - A Cute Little Warbler!

11 Apr 2019 by Mehedi Shams

Word-making game!

Gradient Color Picker - Revised Again

14 Jun 2021 by gggustafson

This article revises an earlier revision of the Gradient Color Picker (V2). The incentive for the revision was a reader request for a larger number of initial color choices.

Fast and Stable Polynomial Root Finders - Part Three

11 Nov 2023 by Henrik Vestermark

Practical implementation of a fast, robust and stable polynomial root finder using Halley's method

Understanding Logistic Regression with ML.NET

12 Jan 2024 by Nicolas DESCARTES

How to implement logistic regression in ML.NET?

Quantum Computer and Algorithms 1

19 May 2014 by databaseobjectmodel

VS2013

Genetic algorithm to solve 2D Mazes in Visual Basic

8 Feb 2015 by Emiliano Musso

How to apply GA techniques fo solving problems in VB.NET. The example shows how to create solutions for a 2D maze, which will evolve to find the shortest path between two points.

Partially-Sampled Random Numbers for Accurate Sampling of Continuous Distributions

16 Mar 2022 by Peter Occil

Python code for partially-sampled random numbers for accurate arbitrary-precision sampling

random

Validation of Interpreted Colors

26 Apr 2021 by gggustafson

How well does the Interpolation of Colors match the Colors produced by Microsoft's Linear Gradient Brush?

Construction of Sparse Matrices for Finite Elements with TBB Containers and OpenMP

6 Oct 2021 by Igor Gribanov

An efficient algorithm for assembling sparse matrices in Compressed Sparse Row (CSR) format.

Dev

Comparing K-Means and Others Algorithms for Data Clustering

8 Jan 2024 by Nicolas DESCARTES

What clustering algorithm should be selected for the clustering task?

Develop Your Own Language Translation System

10 Aug 2010 by anshulskywalker

Understanding of Example Based Machine Translation (EBMT) system and how to create your own using exisiting tools

Converting Postfix Expressions to Infix

20 Jun 2012 by Andreas Gieriet

This is an alternative for "Converting Postfix Expressions to Infix"

AI Emotion Detection in the Browser with Transfer Learning and TensorFlow.js

19 Aug 2020 by MehreenTahir

In this article we create a web app that trains the classifier on the go and recognizes grumpy facial expressions.

HTML

tensorflow

Least Squares: A Matrix Approach in Java

17 Apr 2023 by Mark H Bishop

Computational classes and a GUI interface to illustrate usage

Association Rules Learning (ARL): Part 2 - FPGrowth Algorithm

20 Jul 2019 by Arthur V. Ratz

How to perform ARL by using FPGrowth algorithm

Practical Implementation of Interval Arithmetic

16 Mar 2024 by Henrik Vestermark

The steps needed to build an Interval Arithmetic class in C++

programming

NumberParser

2 Dec 2017 by User 6679439

Library extending the .NET numeric support

AllInOne ImageGrassy: The Ultimate Photo Editing Tool

4 Sep 2013 by Grasshopper.iics

You would never want to use another photo editor in your AIO again

WPF

image-processing

Task Scheduler Service on JavaScript for WEB

14 Aug 2015 by Maxim Komlev

Task Scheduler JavaScript library

Using Handles and Intrusive Reference Counters in Multithreaded Environment in C Language

15 Sep 2015 by Vladimir Pavluk

Smart pointers implementation in C

Graph Intersection - A Map Reduce Approach with Akka

14 Dec 2016 by Paolo Parise

Graph intersection using map reduce and Akka

Recurrence plots in C#, extending WinRQA application

29 Nov 2016 by Miguel Diaz Kusztrich

Adding tools to help estimate the correct delay and embedding dimension

Smart Decimation: Polyline Simplification and Smoothing

6 Aug 2022 by ADMGNS

A new method for 2D polyline simplification and also smoothing that alternative to Douglas-Peucker and curvature-based simplification algorithms

Delphi

Segmented Map, a Compromise Between Flat Map and std::map

18 Sep 2022 by Mikhail Semenov

This article proposes a mapping algorithm, called Segmented Map, which is almost as fast as Flat Map is random access and enumeration of elements and close to std::map in insertion of elements.

Summation of Series with Convergence Acceleration

9 Feb 2023 by Kenneth Haugland

How to speed up convergence of mathematical series

Dev

Fast and Stable Polynomial Root Finders - Part Five

20 Dec 2023 by Henrik Vestermark

Durand-Kerner method for Polynomial roots. A fast and reliable simultaneous method

Algorithm : Calc Convex Hull & Draw HTML5 Canvas (Part 2 of N)

26 Apr 2016 by raddevus

Adding more methods (select points, draw triangles, etc) which allow us to do some specialized drawing on the HTML5 Canvas so we can investigate the Calc Convex Hull algorithm.

Fast Computation of PRNG's

28 May 2024 by Henrik Vestermark

How to add Xoshiro and ChaCha PRNG's as compatible class in C++

Simple Linear Regression from Scratch in Rust

14 Dec 2018 by Philipp_Engelmann

Simple Linear Regression from scratch in Rust

Rust

Call Distribution Parameters using Combined Data Points Splicing

31 Mar 2021 by Fedor Naumenko

Find type of distribution and parameters from set of distributed physical values

Objective-C

Algorithmic Alchemy: Exploiting Graph Theory in the Foreign Exchange

2 Oct 2023 by optiklab1

Playing with graph traversal algorithms in searching for the way of profitable currencies exchange

Implementation Downsampling Algorithm in MSChart Extension

21 Oct 2023 by Code Artist

Implementation of DynamicX-Largest-Triangle-Three-Bucket for chart data plotting

chart

MSChart

Incremental construction of DFA in F#

3 Aug 2016 by Vyacheslav Chernykh

F#-implementation of algorithm for incremental construction of minimal deterministic finite automata through adding and removing strings.

TopDown Analyze Method with Tree Graphs as Support

21 Jul 2023 by Patrice T

Tree Graphs used as support for Top-Down Analyze method

A Generic Implementation of Dijkstra’s Smoothsort in C#

11 Dec 2023 by JorgeLuisOrejel

This article describes the implementation of Dijkstra's Smoothsort as a generic sorting algorithm in C#.

mathematics

Dijkstra

Fast and Stable Polynomial Root Finders - Part Six

8 Jan 2024 by Henrik Vestermark

Ostrowski multi-point method for Polynomial roots

Sorting Variable Length Strings in O(N) Time

7 Nov 2012 by Roger Doss

The algorithm described herein is designed to implement sorting of variable length strings in O(n) time.

PsCal - Create Personalized PDF Calendars

7 May 2024 by FormerBIOSGuy

This article describes a set of batch, AWK, and PostScript files that together allow you to create personalized, 12-page PDF calendars for some year.

PostScript

AWK

Gaussian Multivariate Distribution -Part 1

17 Aug 2014 by pi19404

Multi Variate Gaussian Distribution - Part 1

Algorithm : Calc Convex Hull & Draw HTML5 Canvas (Part 1 of 2)

24 Apr 2016 by raddevus

Step by step walk-through with progressive versions of code downloads will take you from the basics of drawing on HTML5 Canvas while studying an interesting point-connecting algorithm.

Worksheet Forms using WPF style architecture

21 Jun 2016 by Dave “DWC” Curry

This tutorial will show you a good starting point for a WPF style framework which aims to make creating and maintaining Excel-worksheet-forms easier.

Find the First Number k Divisible by Given Number n (Extended Approach)

15 Jul 2018 by Nour Helal

Find the first number k divisible by given number n (extended approach)

Integer Factorization: Optimizing Small Factors Checking

16 Jan 2021 by Patrice T

How to optimize small factors checking

text

Cheetah Optimizer - Python Implementation

30 Sep 2023 by Ujwal Watgule

The Cheetah Optimizer is a nature-inspired metaheuristic algorithm designed to tackle complex optimization problems across multiple dimensions.

Sorting and Removing Elements from the Structure of Arrays (SOA) in C++

2 Apr 2024 by Igor Gribanov

C++ iterators and algorithms work well for containers, but can we sort the Structure of Arrays?

Rogue Wave CodeDynamics: A Review

17 Nov 2015 by Chris_Riley

My deep dive into Rogue Wave’s CodeDynamics product was to address a challenge I had been facing since my college days: the debugging of a genetic algorithms (GA) application.

Lightning-Fast R Machine Learning Algorithms

3 Nov 2016 by Intel

Get Results with the Intel® Data Analytics Acceleration Library and the Latest Intel® Xeon Phi™ Processor

How to Use a Virtual CPU to Emulate and Analyze Suspicious Code Execution at Runtime

20 Nov 2018 by Apriorit Inc, Artem K.

Find out approaches which you can use to improve runtime algorithms for zero-day threat detection

Using Hana and SageMaker to Solve for Adverse Drug Effects

30 Oct 2019 by Wayne Applebaum

Discussion of the issues of identifying adverse drug effects and how machine learn and big data techniques can solve for them.

Render Graphic Functions with Minimal Integer Math, Able to Drive CNC

30 Jun 2023 by altomaltes

This algorithm uses very simple integer math (add and multiply) to render arcs, lines, etc. to CNC machines or a computer surface.

graphics

The Case for OpenMP Target Offloading

18 Dec 2023 by Intel

This article will take a closer look at the advantages and disadvantages of the Fortran DO CONCURRENT statement and the OpenMP target constructs with respect to accelerator offload.

FORTRAN

OpenMP

Fast and Stable Polynomial Root Finders - Part Four

29 Nov 2023 by Henrik Vestermark

Laguerre's method for a stable and efficient polynomial root finder.