Moving heaven and earth: distances between distributions

admin — Mon, 16 Sep 2013 21:17:02 +0000

[author]Suresh Venkatasubramanian[/author]
SIGACT News vol 44, no. 3.

Abstract:

This column comes in two parts. In the first, I discuss various ways of defining distances between distributions. In the second, Jeff Erickson (chair of the SoCG steering committee) discusses some matters related to the relationship between ACM and the Symposium on Computational Geometry.

Links: PDF

New Developments in Matrix Factorization.

suresh — Thu, 14 Mar 2013 04:33:18 +0000

SIGACT News 44 (1), March 2013.

Notes: the published version of the article has a few errors.

Moitra’s SODA paper improves the running time from $O((nm)^{2^r r^2})$ to $O((nm)^{r^2})$, which is considerably stronger than what was reported in the article.
The correct lower bound for computing a nonnegative factorization (assuming ETH) is $O((nm)^{o(r)})$.

This link (PDF) has the corrected article. Thanks to Ankur Moitra for pointing out the errors.

Suresh Venkatasubramanian » Column

Moving heaven and earth: distances between distributions

New Developments in Matrix Factorization.