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ESA
2011
Springer
260views Algorithms» more  ESA 2011»
14 years 4 months ago
On Variants of the Matroid Secretary Problem
We present a number of positive and negative results for variants of the matroid secretary problem. Most notably, we design a constant-factor competitive algorithm for the “rando...
Shayan Oveis Gharan, Jan Vondrák

Publication
289views
14 years 2 months ago
An Analysis of Finite Volume, Finite Element, and Finite Difference Methods Using Some Concepts from Algebraic Topology
In this paper we apply the ideas of algebraic topology to the analysis of the finite volume and finite element methods, illuminating the similarity between the discretization str...
Claudio Mattiussi
CSCW
2012
ACM
14 years 4 days ago
Phrases that signal workplace hierarchy
Hierarchy fundamentally shapes how we act at work. In this paper, we explore the relationship between the words people write in workplace email and the rank of the email’s recip...
Eric Gilbert
MMM
2012
Springer
320views Multimedia» more  MMM 2012»
14 years 1 days ago
Annotated Free-Hand Sketches for Video Retrieval Using Object Semantics and Motion
Abstract. We present a novel video retrieval system that accepts annotated freehand sketches as queries. Existing sketch based video retrieval (SBVR) systems enable the appearance ...
Rui Hu, Stuart James, John P. Collomosse
TSP
2012
14 years 17 hour ago
Distributed Covariance Estimation in Gaussian Graphical Models
—We consider distributed estimation of the inverse covariance matrix in Gaussian graphical models. These models factorize the multivariate distribution and allow for efficient d...
Ami Wiesel, Alfred O. Hero