Smile is a fast and general machine learning engine for big data processing, with built-in modules for classification, regression, clustering, association rule mining, feature selection, manifold learning, genetic algorithm, missing value imputation, effi... (more…)

When and why Double Dispatch is useful, and how to implement it in Java via the Visitor Pattern... (more…)

The idea behind the jextract tool is to mechanically generate a set of interfaces from a C header file. Together, these interfaces can be thought of as Java bindings for the native library whose headers has been processed by jextract. These interfaces are... (more…)

HashMap is one of the most frequently used collection types in Java, it stores key-value pairs. Ideally it expects to use hash table which expects the data access time complexity to be O(1), however, due to hash conflicts, in reality, it uses linked list ... (more…)

As an engineer for the U.S. Digital Service, Marianne Bellotti has encountered vintage mainframes that are still being used in production — sometimes even powering web apps. Last month she entertained a San Francisco audience with tales about some of ...