Posts Tagged ‘ Image Classification ’

Questioning Sparsity

Went through Rigamonti’s CVPR 2011 paper “Are Sparse Representations Really Relevant for Image Classification?” {Rigamonti, Brown, Lepetit}

Recently there being quite a lot of papers on the Sparsity, above is a very valid question. They report lot of experiments and compare many different techniques. Their conclusion is sparsity in important while learning Feature Dictionary but not helpful during classification. Although only thing it was able to convince me was that might be in their setting the convexity is not working.

Looking forward to see rebuttals or papers questioning or answering questions raised by Rigamonti; in coming year. Overall this appears to be paper that will be cited quiet a lot.