Kevin C. O'Kane
January 24, 2015 (The contents of this page are under development - check back for updates)
The purpose of this document is to introduce a collection of programs to be found in the Vector Space ISR Workbench.
The workbench presently consists of about fifty modular programs1 written in Mumps and/or bash script. These programs implement the basic Vector Space Model for document classification and retrieval as originally developed by G. Salton [Salton, 1968, 1983, 1988, 1992] and others. Also included is a collection of approximately 294,000 medical abstracts for testing and experiments.
The purpose of this package is to facilitate teaching, exploration and experimentation with the vector space model and the development of new algorithms and techniques. The modular design of the code together with the Mumps multidimensional database model enable the user to experiment, augment, and measure various indexing strategies.
Currently, the package contains programs that perform:
The programs build:
There are programs to calculate:
The package includes routines to retrieve documents based on:
There also indexing routines to organize the documents by:
The experimental corpus provided (details given below) is the OSU Medline collection used at the National Institute of Standards (NIST) Text Retrieval Conference 9 (TREC-9) [NIST 2000]. Other user provided collections may also be used if their source text is formatted according to the input model.
Most of the code in these modules is written in Mumps, a language developed in medicine in the late 1960s [Barnett 1970, Bowie 1976, O'Kane 2008] which supports a string handling and a multidimensional database model which is ideally suited for vector space model implementations. The Mumps modules are invoked by bash scripts which control flow of data and multitasking.
The Mumps interpreter software used in these experiments are available for free download (GPL License) at:
1 For use with Linux or Cygwin.
2 National Library of Medicine Medical Subject Headings
3 Key Word In Context, Key Word Out of Context
[Salton 1968] Salton, G., Automatic Information Organization and Retrieval, McGraw Hill (New York, 1968).
[Salton 1971] Salton, G, ed.; The SMART Retrieval System, Experiments in Automatic Document Processing, Prentice-Hall (Englewood Cliffs, NJ, 1971).
[Salton 1983] Salton, G.; and McGill, M.J., Introduction to Modern Information Retrieval, McGraw Hill; (New York, 1983).
[Salton 1988] Salton, G., Automatic Text Processing, Addison-Wesley (Reading, 1988).
[Salton 1992] Salton, G., The state of retrieval system evaluation, Information Processing & Management, Vol 28 No 4, pp. 441-449 (1992).
[NIST 2000] National Institute of Standards and Technology, Text Retrieval Conference 9, http://trec.nist.gov/pubs/trec9/t9_proceedings.html (2000).
[Willet 1985] Willett, P., An algorithm for calculation of exact term discrimination vales, Information Processing and Management, Vol 21, No. 3, pp 225-232 (1985).