Gerard Salton's 1989 book seems to me to be the most cited reference. It's good too. I think my MSc. thesis gives a reasonable overview of IR as it applies to Usenet messages in the context of comparing some other methods. I mention some papers that Gerry doesn't.@Book{Salton89, Author="G. Salton", Title="Automatic Text Processing: The Transformation, Analysis, and Retrieval of Information by Computer", Publisher="Addison-Wesley", Year=1989, Annote="Good introduction to information retrieval.", ISBN="0-201-12227-8", Keyword="Classic", SeeAlso="\cite{Salton/McGill}" } @MastersThesis{MSc, Title="An Evaluation of Tools for Converting Text to Hypertext", Author="William James Blustein", School="University of Western Ontario", Address="London, Ontario, Canada", Year=1994, SeeAlso="LSI\cite{LSI}, Jones and Furnas \cite{GeomSimil}, TOPIC\cite{AutoGen}, VISAR\cite{VISAR}, Bernstein's apprentice\cite{Bernstein}" Note="\path|ftp://ftp.csd.uwo.ca/pub/thesis/Blustein.MSc.Thesis.ps.Z|" }
Cameron Laird's notes on information retrieval/claird@phaseit.net