November 1975 - Vol. 18 No. 11
Features
A vector space model for automatic indexing
In a document retrieval, or other pattern matching environment where stored entities (documents) are compared with each other or with incoming patterns (search requests),…
Specifying queries as relational expressions: the SQUARE data sublanguage
This paper presents a data sublanguage called SQUARE, intended for use in ad hoc, interactive problem solving by non-computer specialists. SQUARE is based on the…
A genealogy of control structures
The issue of program control structures has had a history of heated controversy. To put this issue on a solid footing, this paper reviews numerous theoretical results on…
Practical syntactic error recovery
This paper describes a recovery scheme for syntax errors which provides automatically-generated high quality recovery with good diagnostic information at relatively low…
Backtrack programming techniques
The purpose of this paper is twofold. First, a brief exposition of the general backtrack technique and its history is given. Second, it is shown how the use of macros can…
A note on the set basis problem related to the compaction of character sets
This note discusses the reduction of the set basis problem to the clique cover problem.