Keyphrases
- information extraction
- text mining
- precision and recall
- free text
- structured data
- information retrieval
- named entity recognition
- question answering
- textual data
- natural language processing
- semi structured
- machine learning
- web documents
- natural language
- relation extraction
- unstructured text
- conditional random fields
- web mining
- named entities
- information extraction systems
- ontology based information extraction
- machine translation
- text documents
- relational learning
- text processing
- natural language text
- case study
- database
- word sense disambiguation
- knowledge discovery
- probabilistic model
- data model
- multiscale
- web services
- semantic tagging
- data sets