Mixtures of Probabilistic PCAs and Fisher Kernels for Word and Document Modeling.
George SiolasFlorence d'Alché-BucPublished in: ICANN (2002)
Keyphrases
- keywords
- spoken document retrieval
- bayesian networks
- text corpus
- kernel methods
- probabilistic model
- co occurrence
- fisher kernel
- generative model
- document collections
- web documents
- retrieval systems
- document retrieval
- information retrieval
- related words
- latent topics
- query words
- word co occurrence
- tf idf
- document images
- n gram
- information retrieval systems
- feature space