Books
Christopher D. Manning, Prabhakar Raghavan and Hinrich Schütze, Introduction to Information Retrieval, Cambridge University Press. 2008.
D.A. Grossman, O. Frieder, Information Retrieval - Algorithms and Heuristics, 2nd ed, Springer, 2006.
R. Baeza-Yates, B. Ribeiro-Neto, Modern Information Retrieval, Addison Wesley Logman, 1999.
C. Manning, H. Schütze, Foundations of Statistical Natural Language Processing, MIT Press, 1999.
K. van Rijsbergen, O. Frieder, Information Retrieval, Butterworths, 1979.
Surveys and other important papers
2002 Machine learning in automated text categorization
Multimedia indexing
Link analysis
social networks analysis
David Hull, Statistical testing
Evaluation
Ricardo Baeza-Yates, High-dimensional indexing
The classics...
1960 On relevance, probabilistic indexing and information retrieval
1975 A vector space model for automatic indexing
1976 Relevance weighting of search terms
1988 Term-weighting approaches in automatic text retrieval
1989 Models for retrieval with probabilistic indexing
1990 Indexing by latent semantic analysis
1991 A probabilistic learning approach for document indexing
1991 Evaluation of an inference network-based retrieval model
1991 Inference networks for document retrieval
1992 Probabilisitc models in information retrieval
1998 A language modelling approach to information retrieval
Collections
2002 Machine learning in automated text categorization
Related conferences
Conference on Web Search and Data Mining, WSDM
Conference on World Wide Web, WWW
ACM Conference on Multimedia, ACM MM
ACM Conference on Image and Video Retrieval, ACM CIVR
ACM Special Interest Group in Information Retrieval, ACM SIGIR.
European Conference on Information Retrieval, ECIR.
Related journals
Information Processing and Management, IP&M
ACM Transactions On Information Systems, TOIS
ACM Transactions on Multimedia Computing, Communications and Applications.TOMCCAP
IEEE Transactions on Multimedia, IEEETM
IEEE Multimedia, IEEEM
IEEE Transactions on Pattern Analysis and Machine Intelligence, PAMI
Journal of the American Society for Information Science and Technology, JASIS
Journal of DOCumentation, the ASLIB site, JDOC
Information Retrieval, the Kluwer site, IR
Journal of Intelligent Information Systems, the Kluwer site, JIIS