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141
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TALG
2010
83views more  TALG 2010»
14 years 11 months ago
Finding shortest contractible and shortest separating cycles in embedded graphs
We give a polynomial-time algorithm to find a shortest contractible cycle (i.e. a closed walk without repeated vertices) in a graph embedded in a surface. This answers a question ...
Sergio Cabello
VLDB
1999
ACM
91views Database» more  VLDB 1999»
15 years 9 months ago
Probabilistic Optimization of Top N Queries
The problem of nding the best answers to a query quickly, rather than nding all answers, is of increasing importance as relational databases are applied in multimedia and decision...
Donko Donjerkovic, Raghu Ramakrishnan
ICWSM
2008
15 years 6 months ago
Competing to Share Expertise: The Taskcn Knowledge Sharing Community
"Witkeys" are websites in China that form a rapidly growing web-based knowledge market. A user who posts a task also offers a small fee, and many other users submit thei...
Jiang Yang, Lada A. Adamic, Mark S. Ackerman
89
Voted
SKG
2005
IEEE
15 years 10 months ago
The Knowledge Grid and Its Methodology
In the human, society, interconnection environment and systems methodology perspectives, this paper answers the following questions: What are the Knowledge Grid and its distinguis...
Hai Zhuge
118
Voted
IJCAI
1993
15 years 6 months ago
Artificial Thought and Emergent Mind
We consider the question of whether or not a successful attempt to simulate human (rational) thought on a computer can contribute to our understanding of the mind, including perha...
Ivan M. Havel