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SIAMJO
2011
12 years 11 months ago
Rank-Sparsity Incoherence for Matrix Decomposition
Suppose we are given a matrix that is formed by adding an unknown sparse matrix to an unknown low-rank matrix. Our goal is to decompose the given matrix into its sparse and low-ran...
Venkat Chandrasekaran, Sujay Sanghavi, Pablo A. Pa...
CIKM
2011
Springer
12 years 9 months ago
Building directories for social tagging systems
Today, a number of algorithms exist for constructing tag hierarchies from social tagging data. While these algorithms were designed with ontological goals in mind, we know very li...
Denis Helic, Markus Strohmaier
WWW
2009
ACM
14 years 9 months ago
Smart Miner: a new framework for mining large scale web usage data
In this paper, we propose a novel framework called SmartMiner for web usage mining problem which uses link information for producing accurate user sessions and frequent navigation...
Murat Ali Bayir, Ismail Hakki Toroslu, Ahmet Cosar...
FSTTCS
2009
Springer
14 years 3 months ago
Fractional Pebbling and Thrifty Branching Programs
We study the branching program complexity of the tree evaluation problem, introduced in [BCM+09a] as a candidate for separating NL from LogCFL. The input to the problem is a roote...
Mark Braverman, Stephen A. Cook, Pierre McKenzie, ...
SCHULE
2009
Springer
14 years 3 months ago
Programming-Wiki: Online programmieren und kommentieren
Abstract: In Zeiten von Web 2.0 finden immer mehr Aktivit¨aten orts- und zeitunabh¨angig ¨uber das Internet statt. Lerninhalte und Aufgabentexte in einem Wiki aufzubereiten, um...
Michael Hielscher, Christian Wagenknecht
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