Other useful textbooks

• Information Retrieval: Algorithms And Heuristics, by David A. Grossman, Ophir Frieder), 2nd edition, 2004, Springer.
• Finding Out About: A Cognitive Perspective on Search Engine Technology and the WWW, by Richard K. Belew, Cambridge University Press, 2001. ( Errata, The FOA Web Site.)
• I. Witten, A. Moffat, and T. Bell (1999), Managing Gigabytes:compressing and indexing documents and images(MG), Morgan Kaufmann, 1999.
• C. Manning and H. Schutze (1999), Foundations of Statistical Natural Language Processing (SNLP), MIT Press, 1999.
• Ricardo Baeza-Yates and Berthier Ribeiro-Neto (2000), Modern Information Retrieval (MIR), Addison-Wesley, 2000.
• Soumen Chakrabarti (2002), Mining the Web: Analysis of Hypertext and Semi Structured Data (The Morgan Kaufmann Series in Data Management Systems), Morgan Kaufmann, 2002.
• Bing Liu, Web Data Mining: Exploring Hyperlinks, Contents and Usage Data, Springer, 2006.

General advice on computer science research

• Advice on Research and Writing (for computer scientists)
• What is Research in Computer Science
• Basic Research Skills in Computer Science

NLP-related resources

• Statistical natural language processing and corpus-based computational linguistics: An annotated list of resources (Stanford)

IR toolkit

• Lucene (Apache)
• Lemur & Indri (CMU/Univ. of Massachusetts)
• Terrier (Glasgow)
• Smart (Cornell)
• MG
• UIMA
• Information Retrieval Systems

Some other online resources that might be useful

1. Development Related
   • Sample perl scripts
   • wget web crawler (a publically available web crawler, available on CSIL machines at /usr/dcs/software/supported/bin/wget)
   • Information Extraction Resouces (RISE) (A comprehensive list of IE-related projects, papers, people, and data sets, including the seminar data set)
2. Mathematics
• Tutorial on optimization theory and difference and differential equations by Martin J. Osborne
• Lagrange Multipliers without Permanent Scarring (by Dan Klein)
3. Tutorials
   • Explanation of some TREC evaluation measures
   • Lan Huang, A Survey On Web Information Retrieval Technologies
   • Stefano Mizzaro, Intelligent Interfaces for Information Retrieval: A Review
   • Ed Greengrass, Information Retrieval: A Survey
   • Search Engine Meeting 2002
   • A Roadmap to Text Mining and Web Mining
   • Data mining for hypertext: A tutorial
   • Text Mining Resources (by Weiguo "Patrick" Fan).