Pooling Robust Shift-Invariant Sparse Representations of Acoustic Signals.
Po-Sen HuangJianchao YangMark Hasegawa-JohnsonFeng LiangThomas S. HuangPublished in: INTERSPEECH (2012)
Keyphrases
- shift invariant
- sparse representation
- sparse coding
- acoustic signals
- wavelet domain
- image classification
- unsupervised learning
- rotation invariant
- acoustic signal
- wavelet coefficients
- signal processing
- natural images
- image patches
- linear combination
- discrete wavelet transform
- regularized least squares
- image representation
- generative model
- face recognition
- data sets
- dimensionality reduction
- anisotropic diffusion
- high dimensional
- spatial information
- supervised learning
- higher order