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• Tools for Preprocessing - includes stemming and stop word removal (in C), and a program to extract text and text frequency from HTML files. Each program is in its own subdirectory and has a "readme" file that explains how to use it.

• IR Tools and Software - including source code written in Perl, Java, C, and C++.

• Porter's Stemmer Online - Try doing some stemming with this online implementation of Porter's algorithm. You can enter a set of words, a sentence, or a paragraph and get the stemming results.

• General Resources
  • Information Retrieval (Online book by van Rijsbergen)
  • ACM SIGIR
  • TREC Home Page
  • IR resources (from Galsgow IR Group)
  • Information Retrieval Links
  • Information Filtering Resources
  • Information Retrieval Links (by Anne Diekema)
  • The Glasgow IR Group
  • Center for Intelligent Information Retrieval (CIIR)
  • Search Engine Watch
  • Web IR & IE
  • Search Engine Watch
  • UMBC Intelligent Software Agents Resources
  • Project Aristotle(sm) Automated Categorization of Web
  • Recommender Systems and Collaborative Filtering
• Some Interesting Systems, Projects, Tools
  • Google API
  - use Google's indexing & search services to build your own application.
  • Nutch
  - an open-source web search engine.
  • Web IR Resources
  • The Sonia Project
  • Cha-Cha
  • Clever
  • WebWatcher
  • SIMS
  • TSIMMIS
  • WebSQL
  • LORE
  • Willow Information Center
  • Freely Available Filtering Systems
• Digital Libraries
  • Digital Library Resource Page
  • UIUC Digital Library Initiative
  • UC Berkeley Digital Library Project
  • Melvyl Homepage
• Natural Language Processing
  • WordNet
  • Natural Language Processing & Information Retrieval (NLPIR)
  • Association for Computational Linguistics
• Information Visualization
  • Information Visualization Resources on the Web
  • Information Visualization Bibliography
  • On-line Library of Information Visualization Environments
• Other Related and Useful Links
  • Common IR Test Collections
  • A Big Stop List
  • Web Mining Links
  • Metadata Resources
  • Thesaurus Publications