Any post containing code examples

ojAlgo's MatrixStore interface largely defines what you can do with matrices. There are many implementations of that interface provided. They store the elements differently and exploit structure to perform operations…

Continue ReadingSparse and Special Structure Matrices

v48.3.0 had a pure Neural Network focus: Support for floatPossibility to "get" all individual parameters of the networkNew file format to save trained networks to diskImproved separation between building, training and…

Continue ReadingNeural Network New Features in v48.3

Controlling Concurrency ojAlgo is multithreaded – some operations are automatically divided to run in multiple threads. You don't have to do anything for this to happen. ojAlgo senses what hardware…

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Generalised Eigenvalue Problems ojAlgo now has built-in direct support for (some) generalised eigenvalue problems where both A and B are symmetric/hermitian and B is positive definite. Each of these problems can be reduced to a standard…

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The diet problem is one of the earliest real-life problems to be solved using linear programming. This example shows how to use ojAlgo to model and solve a (miniature) instance…

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This is not an eating competition, instead you have to think. The Challenge Chicken McNuggets can be ordered in the sizes of 6, 9 and 20 pieces. Being allowed to…

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StatQuest (Josh Starmer) has published a great video explaining principal component analysis (PCA). In the video he mentions that he is using Singular Value Decomposition (SVD), but he doesn't actually…

Continue ReadingStatQuest PCA Example

A previous post introduced ojAlgo's Artificial Neural Network feature. It did so by presenting a fully functional program that trained and evaluated a network model to categorise handwritten digits using the MNIST data set.…

Continue ReadingNeural Network Basics