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» Extended Term Rewriting Systems
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94
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WWW
2006
ACM
16 years 1 months ago
Geographically focused collaborative crawling
A collaborative crawler is a group of crawling nodes, in which each crawling node is responsible for a specific portion of the web. We study the problem of collecting geographical...
Weizheng Gao, Hyun Chul Lee, Yingbo Miao
93
Voted
WWW
2003
ACM
16 years 1 months ago
On the bursty evolution of blogspace
We propose two new tools to address the evolution of hyperlinked corpora. First, we define time graphs to extend the traditional notion of an evolving directed graph, capturing li...
Ravi Kumar, Jasmine Novak, Prabhakar Raghavan, And...
210
Voted
POPL
2005
ACM
16 years 1 months ago
Transition predicate abstraction and fair termination
on Predicate Abstraction and Fair Termination Andreas Podelski Andrey Rybalchenko Max-Planck-Institut f?ur Informatik Saarbr?ucken, Germany Predicate abstraction is the basis of m...
Andreas Podelski, Andrey Rybalchenko
PODS
2008
ACM
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16 years 26 days ago
Data exchange and schema mappings in open and closed worlds
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
Leonid Libkin, Cristina Sirangelo
81
Voted
ICFP
2006
ACM
16 years 21 days ago
Extensible programming with first-class cases
We present language mechanisms for polymorphic, extensible records and their exact dual, polymorphic sums with extensible first-class cases. These features make it possible to eas...
Matthias Blume, Umut A. Acar, Wonseok Chae