Keyphrases
- context free languages
- regular languages
- grammatical inference
- regular expressions
- finite automata
- context free grammars
- context free
- fixpoint
- decision problems
- pac learning
- positive data
- keywords
- n gram
- finite state machines
- logic programs
- inductive inference
- co occurrence
- text documents
- context sensitive
- deductive databases
- production system
- markov chain
- text classification
- np hard
- equivalence queries
- xml documents
- training data