Efficient Word Retrieval by Means of SOM Clustering and PCA.
Simone MarinaiStefano FainiEmanuele MarinoGiovanni SodaPublished in: Document Analysis Systems (2006)
Keyphrases
- k means
- self organizing maps
- principal component analysis
- unsupervised learning
- information retrieval
- principal components analysis
- image database
- dimensionality reduction
- clustering method
- clustering algorithm
- feature extraction
- document retrieval
- neural gas
- efficient indexing
- term weighting
- cluster analysis
- co occurrence
- high dimensional
- information retrieval systems
- hierarchical clustering
- neural network
- test collection
- n gram
- retrieval systems
- covariance matrix
- retrieval model
- face images
- data clustering
- spectral clustering
- principal components
- image retrieval