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PR
2008
206views more  PR 2008»
13 years 7 months ago
A study of graph spectra for comparing graphs and trees
The spectrum of a graph has been widely used in graph theory to characterise the properties of a graph and extract information from its structure. It has also been employed as a g...
Richard C. Wilson, Ping Zhu
SIGIR
2008
ACM
13 years 7 months ago
Directly optimizing evaluation measures in learning to rank
One of the central issues in learning to rank for information retrieval is to develop algorithms that construct ranking models by directly optimizing evaluation measures used in i...
Jun Xu, Tie-Yan Liu, Min Lu, Hang Li, Wei-Ying Ma
SIGIR
2008
ACM
13 years 7 months ago
Deep classification in large-scale text hierarchies
Most classification algorithms are best at categorizing the Web documents into a few categories, such as the top two levels in the Open Directory Project. Such a classification me...
Gui-Rong Xue, Dikan Xing, Qiang Yang, Yong Yu
IJSWIS
2007
171views more  IJSWIS 2007»
13 years 7 months ago
Experience in Aligning Anatomical Ontologies
An ontology is a formal representation of a domain modeling the entities in the domain and their relations. When a domain is represented by multiple ontologies, there is need for ...
Songmao Zhang, Olivier Bodenreider
TIP
2008
118views more  TIP 2008»
13 years 7 months ago
Minimum Variance Optimal Rate Allocation for Multiplexed H.264/AVC Bitstreams
Consider the problem of transmitting multiple video streams to fulfill a constant bandwidth constraint. The available bit budget needs to be distributed across the sequences in ord...
Marco Tagliasacchi, Giuseppe Valenzise, Stefano Tu...