Algebras for Querying Text Regions: Expressive Power and Optimization.

Mariano P. Consens Tova Milo

Published in: J. Comput. Syst. Sci. (1998)

Keyphrases

expressive power
query language
relation algebra
data complexity
first order logic
transitive closure
relational algebra
database
data model
databases
multimedia
bounding box
keywords
video frames
text information
recursive queries