Surrogate File Approach To Managing First Order Terms In Secondary Storage

Donghoon Shin; P. Bruce Berra

doi:10.1117/12.969354

21 March 1989 Surrogate File Approach To Managing First Order Terms In Secondary Storage

Donghoon Shin, P. Bruce Berra

Proceedings Volume 1095, Applications of Artificial Intelligence VII; (1989) https://doi.org/10.1117/12.969354
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

This paper concerns the efficient management of very large logic programs stored in secondary storage by proposing a physical data organization scheme called an extended concatenated code word (ECCW) which is based on the surrogate file concept.' The ECCW can be constructed by concatenating transformed code words obtained from the arguments. Associated with each code word are two fields; a tag field and a value field. The tag field can represent any argument type including lists and structured terms as well as variables and constants. The value field contains the transformed representation of the corresponding argument according to the content of its tag field. The ECCW uses several storage encoding techniques: multilevel coding to represent nested structures by using normalizing storage model, tagged coding to discriminate attribute types such as variables, lists, complex terms, and constants, storage partitioning and tag collection to reduce search space.

Citation Download Citation

Donghoon Shin and P. Bruce Berra "Surrogate File Approach To Managing First Order Terms In Secondary Storage", Proc. SPIE 1095, Applications of Artificial Intelligence VII, (21 March 1989); https://doi.org/10.1117/12.969354

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