A new geometric approach to latent topic modeling and discovery
ICASSP, pp. 5568-5572, 2013.
topic modelingextreme pointstext analysisintegrated circuitslogic gatesMore(4+)
A new geometrically-motivated algorithm for nonnegative matrix factorization is developed and applied to the discovery of latent "topics" for text and image "document" corpora. The algorithm is based on robustly finding and clustering extreme points of empirical cross-document word-frequencies that correspond to novel "words" unique to ...More
PPT (Upload PPT)