Graph-Based Lexicon Expansion with Sparsity-Inducing Penalties.
Dipanjan DasNoah A. SmithPublished in: HLT-NAACL (2012)
Keyphrases
- sparsity inducing
- structured sparsity
- variable selection
- sparse learning
- sparse regression
- convex optimization problems
- group lasso
- statistical learning
- elastic net
- feature selection and classification
- semi supervised
- low rank
- estimation problems
- convex optimization
- multi task
- cross validation
- regression model
- sparse representation
- sparse coding
- face recognition
- label propagation
- efficient optimization
- learning problems
- signal processing