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20 papers · 1 filter
Soft X-ray Pulsations in Solar Flares
Paulo J. A. Simões, Hugh S. Hudson, Lyndsay Fletcher
The soft X-ray emissions of solar flares come mainly from the bright coronal loops at the highest temperatures normally achieved in the flare process. Their ubiquity has led to the…
Lower bounds on the size of semidefinite programming relaxations
James R. Lee, Prasad Raghavendra, David Steurer
We introduce a method for proving lower bounds on the efficacy of semidefinite programming (SDP) relaxations for combinatorial problems. In particular, we show that the cut, TSP, a…
Finding Action Tubes
Georgia Gkioxari, Jitendra Malik
We address the problem of action detection in videos. Driven by the latest progress in object detection from 2D images, we build action models using rich feature hierarchies derive…
Electronic Structures of Hybrid Graphene/Phosphorene Nanocomposite
Wei Hu, Tian Wang, Jinlong Yang
Combining the electronic structures of two-dimensional monolayers in ultrathin hybrid nanocomposites is expected to display new properties beyond their simplex components. Here, fi…
Submodular meets Structured: Finding Diverse Subsets in Exponentially-Large Structured Item Sets
Adarsh Prasad, Stefanie Jegelka, Dhruv Batra
To cope with the high level of ambiguity faced in domains such as Computer Vision or Natural Language processing, robust prediction methods often search for a diverse set of high-q…
Local tests of global entanglement and a counterexample to the generalized area law
Dorit Aharonov, Aram W. Harrow, Zeph Landau +3
We introduce a technique for applying quantum expanders in a distributed fashion, and use it to solve two basic questions: testing whether a bipartite quantum state shared by two p…