Two recent releases with a lot of QP related news. <dependency> <groupId>org.ojalgo</groupId> <artifactId>ojalgo</artifactId> <version>56.2.0</version></dependency> <dependency> <groupId>org.ojalgo</groupId> <artifactId>ojalgo-clarabel4j</artifactId> <version>0.1.0</version></dependency> What's new? ojAlgo-clarabel4j is a new 3:d party solver integration, integrating Clarabel…
ojAlgo aims to have the best set of pure Java solvers available, and to be roughly on par with good native code solvers when the models are not too big…
The Traveling Salesman Problem (TSP) is a classic optimization problem in which a salesman must visit a set of cities exactly once and return to the starting city, while minimizing the total…
Playing around with various AI tools, as is common nowadays, I asked the tool to search the internet and summarise common questions, complaints and misconceptions about ojAlgo. Just thought it…
This post aims to demonstrate how to make a solver usable from ExpressionsBasedModel. To do that we first implement a very simple solver, and then the integration. There are some…
This post describes how to do clustering with ojAlgo. Support for clustering is new with v55.1.0. This version added basic implementations of k-means and greedy clustering, but in a very…
The One Billion Row Challenge (1BRC) is a fun exploration of how far modern Java can be pushed for aggregating one billion rows from a text file. Grab all your…
The Fast Fourier Transform (FFT) algorithm to calculate discrete Fourier transforms (DFT) is a recent addition to ojAlgo. The last blog post was about Image Processing (using Singular Value Decomposition,…
Suppose a satellite takes a picture and wants to send it to earth. The picture may contain 1000 by 1000 "pixels" – little squares each with a definite color. We…
ojAlgo v53.1.0 was released today (2023-09-17). The most important additions are with the optimisation model and solvers: It's now possible to extract the Lagrange multipliers (dual variables) from the Optimisation.Result…