18 citations · 22 across the 3 of their papers we have counts for
4 papers
Expressivity of expand-and-sparsify representations
Sanjoy Dasgupta, Christopher Tosh
A simple sparse coding mechanism appears in the sensory systems of several organisms: to a coarse approximation, an input is mapped to much higher dimension …
Contrastive estimation reveals topic posterior information to linear models
Christopher Tosh, Akshay Krishnamurthy, Daniel Hsu
Contrastive learning is an approach to representation learning that utilizes naturally occurring similar and dissimilar pairs of data points to find useful embeddings of data. In t…
Interactive Topic Modeling with Anchor Words
Sanjoy Dasgupta, Stefanos Poulis, Christopher Tosh
The formalism of anchor words has enabled the development of fast topic modeling algorithms with provable guarantees. In this paper, we introduce a protocol that allows users to in…
Diameter-based Interactive Structure Discovery
Christopher Tosh, Daniel Hsu
We introduce interactive structure discovery, a generic framework that encompasses many interactive learning settings, including active learning, top-k item identification, interac…