A unimodality property of optimal exhaustive prefix codes and retrieval trees over alphabets of varying size.
Larry E. StanfelPublished in: Inf. Syst. (1977)
Keyphrases
- tree structure
- image database
- exhaustive search
- image retrieval
- information retrieval
- relevance feedback
- decision trees
- bounded degree
- document retrieval
- retrieval model
- dynamic programming
- data structure
- error correcting codes
- multimedia databases
- neural network
- retrieval method
- monotonicity property
- prefix tree
- constant factor
- efficient retrieval
- retrieval accuracy
- error correction
- text retrieval
- genetic algorithm
- test collection
- query expansion
- language model
- information retrieval systems
- worst case