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» The Complexity of List Ranking of Trees
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CC
2010
Springer
120views System Software» more  CC 2010»
14 years 7 months ago
Lower Bounds for Agnostic Learning via Approximate Rank
We prove that the concept class of disjunctions cannot be pointwise approximated by linear combinations of any small set of arbitrary real-valued functions. That is, suppose that t...
Adam R. Klivans, Alexander A. Sherstov
DAM
2008
108views more  DAM 2008»
14 years 10 months ago
On the complexity of the multicut problem in bounded tree-width graphs and digraphs
Given an edge- or vertex-weighted graph or digraph and a list of source-sink pairs, the minimum multicut problem consists in selecting a minimum weight set of edges or vertices wh...
Cédric Bentz
SIGECOM
2004
ACM
129views ECommerce» more  SIGECOM 2004»
15 years 3 months ago
Evaluating example-based search tools
A crucial element in consumer electronic commerce is a catalog tool that not only finds the product for the user, but also convinces him that he has made the best choice. To do th...
Pearl Huan Z. Pu, Pratyush Kumar
EDBT
2002
ACM
129views Database» more  EDBT 2002»
15 years 10 months ago
Schema-Driven Evaluation of Approximate Tree-Pattern Queries
Abstract. We present a simple query language for XML, which supports hierarchical, Boolean-connected query patterns. The interpretation of a query is founded on cost-based query tr...
Torsten Schlieder
NIPS
2007
14 years 11 months ago
A General Boosting Method and its Application to Learning Ranking Functions for Web Search
We present a general boosting method extending functional gradient boosting to optimize complex loss functions that are encountered in many machine learning problems. Our approach...
Zhaohui Zheng, Hongyuan Zha, Tong Zhang, Olivier C...