A Collection of Java-Classes for various Trie-Implementations, including Patricia Trie and Interfaces implementing Set and Map. Free for non-commercial use. Well documented and incl. Tests.
A Tutorial and Recipe Book for Those in a Hurry - Provides an owerview of what can be done with the BioJava API: All sorts of string manipulation, HMMs, Trees etc.
MG4J (Managing Gigabytes for Java) is a free full-text indexing system for large document collections written in Java. As a by-product, it offers several general-purpose optimised classes, including fast & compact mutable strings, bit-level I/O, fast unsy
Brand new... good for you! "To endow computers with common sense is one of the major long-term goals of Artificial Intelligence research. One approach to this problem is to formalize commonsense reasoning using mathematical logic."
J. Luo, L. Peh, und N. Jha. DATE '03: Proceedings of the Conference on Design, Automation and Test in Europe, Seite 11150. Washington, DC, USA, IEEE Computer Society, (2003)