Significance of Low-Frequent Words in Concept Describing Document.
Yuki OkumuraSachio HirokawaKazuhiro TakeuchiPublished in: IIAI-AAI (2019)
Keyphrases
- text documents
- keywords
- index terms
- document representation
- latent topics
- related words
- information retrieval
- document space
- concept space
- word co occurrence
- text corpus
- multiword
- retrieval systems
- topic hierarchy
- keyword extraction
- document content
- information extraction
- co occurrence
- document images
- semantically related
- text mining
- concept hierarchy
- language model
- vector space model
- cf loadingtexthtml
- document retrieval
- n gram
- semistructured documents