Keyphrases
- information extraction
- natural language processing
- precision and recall
- structured data
- free text
- text mining
- machine learning
- semi structured
- web documents
- information retrieval
- textual data
- named entity recognition
- machine translation
- named entities
- conditional random fields
- web mining
- ontology based information extraction
- text documents
- semantic tagging
- natural language
- open domain
- metadata
- text processing
- text summarization
- relation extraction
- e learning
- information extraction systems
- unstructured text
- relational learning
- knowledge base
- image segmentation
- word sense disambiguation
- digital libraries
- expert systems
- question answering