Keyphrases
- prediction accuracy
- text mining
- tree structure
- information retrieval
- free text
- text retrieval
- neural network
- text documents
- prediction algorithm
- binary tree
- database
- keywords
- prediction model
- prediction error
- semantic information
- index structure
- text classification
- co occurrence
- tree structures
- query processing
- tree construction
- tree nodes
- text fragments
- chinese named entity recognition