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WINE
2009
Springer
178views Economy» more  WINE 2009»
16 years 1 months ago
The Geometry of Truthfulness
We study the geometrical shape of the partitions of the input space created by the allocation rule of a truthful mechanism for multi-unit auctions with multidimensional types and ...
Angelina Vidali
COCO
2009
Springer
105views Algorithms» more  COCO 2009»
16 years 1 months ago
Planar Graph Isomorphism is in Log-Space
Graph Isomorphism is the prime example of a computational problem with a wide difference between the best known lower and upper bounds on its complexity. There is a significant ...
Samir Datta, Nutan Limaye, Prajakta Nimbhorkar, Th...
MKM
2009
Springer
16 years 1 months ago
OpenMath in SCIEnce: SCSCP and POPCORN
In this short communication we want to give an overview of how OpenMath is used in the European project “SCIEnce” [12]. The main aim of this project is to allow unified commun...
Peter Horn, Dan Roozemond
RECSYS
2009
ACM
16 years 1 months ago
Improving rating estimation in recommender systems using aggregation- and variance-based hierarchical models
Previous work on using external aggregate rating information showed that this information can be incorporated in several different types of recommender systems and improves their...
Akhmed Umyarov, Alexander Tuzhilin
FLAIRS
2009
15 years 4 months ago
Are Ontologies Involved in Natural Language Processing?
For certain disable persons unable to communicate, we present a palliative aid which consist of a virtual pictographic keyboard associated to a text processing from a pictographic...
Maryvonne Abraham