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» Relative Randomness and Cardinality
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ORL
2011
14 years 8 months ago
Random half-integral polytopes
We show that half-integral polytopes obtained as the convex hull of a random set of half-integral points of the 0/1 cube have rank as high as Ω(log n/ log log n) with positive pr...
Gábor Braun, Sebastian Pokutta
FOCS
1999
IEEE
15 years 10 months ago
An Algorithmic Theory of Learning: Robust Concepts and Random Projection
We study the phenomenon of cognitive learning from an algorithmic standpoint. How does the brain effectively learn concepts from a small number of examples despite the fact that e...
Rosa I. Arriaga, Santosh Vempala
SIGMOD
1999
ACM
87views Database» more  SIGMOD 1999»
15 years 10 months ago
On Random Sampling over Joins
A major bottleneck in implementing sampling as a primitive relational operation is the ine ciency ofsampling the output of a query. It is not even known whether it is possible to ...
Surajit Chaudhuri, Rajeev Motwani, Vivek R. Narasa...
ACL
2009
15 years 3 months ago
Answering Opinion Questions with Random Walks on Graphs
Opinion Question Answering (Opinion QA), which aims to find the authors' sentimental opinions on a specific target, is more challenging than traditional factbased question an...
Fangtao Li, Yang Tang, Minlie Huang, Xiaoyan Zhu
EDM
2009
110views Data Mining» more  EDM 2009»
15 years 3 months ago
Using Learning Decomposition and Bootstrapping with Randomization to Compare the Impact of Different Educational Interventions o
A basic question of instructional interventions is how effective it is in promoting student learning. This paper presents a study to determine the relative efficacy of different in...
Mingyu Feng, Joseph Beck, Neil T. Heffernan