Keywords lie far from the mean of all words in local vector space.
Eirini PapagiannopoulouGrigorios TsoumakasApostolos N. PapadopoulosPublished in: CoRR (2020)
Keyphrases
- vector space
- keywords
- latent semantic
- document representation
- latent semantic indexing
- text documents
- vector space model
- index terms
- euclidean space
- keyword extraction
- web pages
- search engine
- retrieval model
- concept space
- distance measure
- similarity search
- semantic information
- feature vectors
- visual features
- low dimensional
- covariance matrices
- finite dimensional
- training documents
- user queries
- n gram
- data sets
- web documents
- neural network
- language model
- principal component analysis
- machine learning