|
Abstract : |
PADDY is an experimental free-text retrieval engine for the Fujitsu AP1000. Considerable development of PADDY has occurred since the work reported at the second CAP Workshop. Search patterns now include generalised regular expressions, set operations may now be applied to the results of searches, and proximity operators have been implemented. The speed of literal searches has been increased and the time to load a dictionary from the front end has been dramatically speeded up. The scalable performance of PADDY, coupled with likely developments in the technology of AP1000-like machines, leads to a discussion of the role of a "super " free-text retrieval engine in libraries of the future. Current PADDY research now centres on use of the AP1000 to rapidly build a complete index to support subsequent text searching on a serial workstation, and on the very large sorting operation underlying it. 1, |
