Densifying Sparse Representations for Passage Retrieval by Representational Slicing.
Sheng-Chieh LinJimmy LinPublished in: CoRR (2021)
Keyphrases
- sparse representation
- passage retrieval
- question answering
- document retrieval
- dictionary learning
- language model
- audio visual
- query expansion
- sparse coding
- information retrieval
- retrieval model
- image classification
- face recognition
- semantic relatedness
- signal processing
- quantitative evaluation
- retrieval systems
- relevance model
- high dimensional data
- image representation
- dimensionality reduction
- information extraction
- visual information
- free text
- active learning
- pseudo relevance feedback
- n gram
- document collections
- relevant documents
- ground truth
- knn
- probabilistic model
- feature space
- multiscale
- feature selection