Keyphrases
- information extraction
- text documents
- web documents
- free text
- information retrieval
- unstructured documents
- textual data
- text mining
- text analysis
- natural language processing
- natural language text
- document classification
- document collections
- structured data
- named entity recognition
- document clustering
- information retrieval systems
- document retrieval
- named entities
- unstructured text
- legal documents
- semi structured
- xml documents
- machine learning
- precision and recall
- relevant documents
- conditional random fields
- metadata
- keywords
- query terms
- web mining
- document set
- search engine
- textual information
- machine translation
- structured documents
- electronic documents