Estimating Gaussian mixture models in the local neighbourhood of embedded word vectors for query performance prediction.
Dwaipayan RoyDebasis GangulyMandar MitraGareth J. F. JonesPublished in: Inf. Process. Manag. (2019)
Keyphrases
- gaussian mixture model
- query performance prediction
- feature vectors
- covariance matrices
- query difficulty
- mixture model
- speaker recognition
- em algorithm
- expectation maximization
- vector space
- co occurrence
- feature space
- retrieval effectiveness
- maximum likelihood
- average precision
- query suggestion
- sentence level
- feature extraction
- high dimensional
- relevance judgments
- dimensionality reduction