K. Sparck Jones, S. Walker and S. E. Robertson,
A probabilistic model of information retrieval:
development and status.
Tech. Rep. TR-446, Computer Laboratory, University of Cambridge, New Museums Site, Pembroke Street, Cambridge CB2 3QG, UK, 1998.
K. Sparck Jones, S. Walker and S. E. Robertson,
A probabilistic model of information retrieval:
development and status.
Tech. Rep. TR-446, Computer Laboratory, University of Cambridge, New Museums Site, Pembroke Street, Cambridge CB2 3QG, UK, 1998.
The paper combines a comprehensive account of the probabilistic model of retrieval with new systematic experiments on TREC Programme material. It presents the model from its foundations through its logical development to cover more aspects of retrieval data and a wider range of system functions. Each step in the argument is matched by comparative retrieval tests, to provide a single coherent account of a major line of research. The experiments demonstrate, for a large test collection, that the probabilistic model is effective and robust, and that it responds appropriately, with major improvements in performance, to key features of retrieval situations.