SpaDE: Improving Sparse Representations using a Dual Document Encoder for First-stage Retrieval.
Eunseong ChoiSunkyung LeeMinjin ChoiHyeseon KoYoung-In SongJongwuk LeePublished in: CIKM (2022)
Keyphrases
- sparse representation
- retrieval systems
- dictionary learning
- information retrieval
- information retrieval systems
- document retrieval
- structured documents
- sparse coding
- image classification
- test collection
- signal processing
- document collections
- face recognition
- image patches
- joint optimization
- relevant documents
- compressive sensing
- multimedia documents
- regularized least squares
- sparse reconstruction
- negative matrix factorization
- document clustering
- random projections
- compressed sensing
- retrieval model
- image representation
- image retrieval
- document images
- high dimensional data
- language model
- dimensionality reduction
- neural network
- machine learning
- motion estimation
- sparse coefficients
- rate distortion
- query expansion
- unsupervised learning
- relevance feedback