Keyphrases
- search strategy
- search algorithm
- search strategies
- search space
- effective pruning
- information retrieval systems
- document collections
- document images
- web documents
- information retrieval
- document analysis
- semantic information
- retrieval systems
- text documents
- vector space model
- hill climbing
- document representation
- relevant documents
- document clustering
- probabilistic model
- document classification
- tf idf
- language model
- lower bound
- search heuristics
- keywords