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CIKM
2005
Springer
16 years 8 days ago
Selectivity-based partitioning: a divide-and-union paradigm for effective query optimization
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
Neoklis Polyzotis
DMIN
2008
190views Data Mining» more  DMIN 2008»
15 years 8 months ago
Optimization of Self-Organizing Maps Ensemble in Prediction
The knowledge discovery process encounters the difficulties to analyze large amount of data. Indeed, some theoretical problems related to high dimensional spaces then appear and de...
Elie Prudhomme, Stéphane Lallich
APPROX
2008
Springer
142views Algorithms» more  APPROX 2008»
15 years 8 months ago
Approximating Maximum Subgraphs without Short Cycles
We study approximation algorithms, integrality gaps, and hardness of approximation, of two problems related to cycles of "small" length k in a given graph. The instance f...
Guy Kortsarz, Michael Langberg, Zeev Nutov
WWW
2005
ACM
16 years 7 months ago
An environment for collaborative content acquisition and editing by coordinated ubiquitous devices
Digital content is not only stored by servers on the Internet, but also on various embedded devices belonging to ubiquitous networks. In this paper, we propose a content processin...
Yutaka Kidawara, Tomoyuki Uchiyama, Katsumi Tanaka
WWW
2009
ACM
16 years 7 months ago
Quicklink selection for navigational query results
Quicklinks for a website are navigational shortcuts displayed below the website homepage on a search results page, and that let the users directly jump to selected points inside t...
Deepayan Chakrabarti, Ravi Kumar, Kunal Punera