Keyphrases
- textual content
- automatically extracted
- content and structure
- text information
- semantic content
- information retrieval
- text content
- web documents
- text retrieval
- printed documents
- keywords
- automatically extracting
- semantic information
- textual information
- e learning
- multimedia documents
- free text
- multimedia content
- image retrieval
- user generated
- web content
- text mining
- metadata
- plain text
- content features