Publications

The letter introduces DARecNet-BS, an unsupervised dual attention reconstruction network for hyperspectral band selection. DARecNet-BS combines the position and spectral attention mechanisms to capture long range contextual information in both spectral and spatial directions. Our network improves the feature representation ability for informative band selection with less computational overhead. Experiments on three wellknown datasets demonstrate the superior performance using small training sets with less number of spectral bands.

This work studies disconnected manifold learning in generative models in the light of point-set topology and persistent homology. Under this formalism, the topological similarity of latent space in generative models with the underlying manifold of data distribution facilitates better generalization. To achieve this, we introduce a topology-constrained noise sampler, responsible for mapping the samples from Gaussian spheres to a latent embedding space, which in turn is constrained to be topologically similar to the manifold underlying the data distribution. We study the effectiveness of this method in GANs for learning disconnected manifolds. This is ongoing research, with the current report containing preliminary empirical experiments.