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SIGIR
2004
ACM
15 years 3 months ago
Dependence language model for information retrieval
This paper presents a new dependence language modeling approach to information retrieval. The approach extends the basic language modeling approach based on unigram by relaxing th...
Jianfeng Gao, Jian-Yun Nie, Guangyuan Wu, Guihong ...
IEEEPACT
2003
IEEE
15 years 3 months ago
Resolving Register Bank Conflicts for a Network Processor
This paper discusses a register bank assignment problem for a popular network processor--Intel's IXP. Due to limited data paths, the network processor has a restriction that ...
Xiaotong Zhuang, Santosh Pande
MSWIM
2003
ACM
15 years 3 months ago
Simulation of large ad hoc networks
An ad hoc network is formed by wireless mobile nodes (hosts) that operate as terminals as well as routers in the network, without any centralized administration. Research in ad ho...
Valeriy Naoumov, Thomas R. Gross
ESA
2003
Springer
189views Algorithms» more  ESA 2003»
15 years 3 months ago
On the Complexity of Approximating TSP with Neighborhoods and Related Problems
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...
Shmuel Safra, Oded Schwartz
FSTTCS
2003
Springer
15 years 3 months ago
On the Covering Steiner Problem
The Covering Steiner problem is a common generalization of the k-MST and Group Steiner problems. An instance of the Covering Steiner problem consists of an undirected graph with ed...
Anupam Gupta, Aravind Srinivasan