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» Design science as nested problem solving
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103
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FOCS
2002
IEEE
15 years 7 months ago
A Constant-Factor Approximation Algorithm for the Multicommodity
We present the first constant-factor approximation algorithm for network design with multiple commodities and economies of scale. We consider the rent-or-buy problem, a type of m...
Amit Kumar, Anupam Gupta, Tim Roughgarden
100
Voted
CSCW
1998
ACM
15 years 6 months ago
Just Talk to Me: A Field Study of Expertise Location
Everyday, people in organizations must solve their problems to get their work accomplished. To do so, they often must find others with knowledge and information. Systems that assi...
David W. McDonald, Mark S. Ackerman
ICCSA
2007
Springer
15 years 8 months ago
An Automatic Correction Tool for Relational Algebra Queries
Abstract. Relational algebra is one of the main topics covered in undergraduate computer science database courses. In this paper, we present a web-based tool designed to automatica...
Josep Soler, Imma Boada, Ferran Prados, Jordi Poch...
CSCW
2000
ACM
15 years 6 months ago
Expertise recommender: a flexible recommendation system and architecture
Locating the expertise necessary to solve difficult problems is a nuanced social and collaborative problem. In organizations, some people assist others in locating expertise by ma...
David W. McDonald, Mark S. Ackerman
165
Voted
CHI
2011
ACM
14 years 6 months ago
The polymath project: lessons from a successful online collaboration in mathematics
Although science is becoming increasingly collaborative, there are remarkably few success stories of online collaborations between professional scientists that actually result in ...
Justin Cranshaw, Aniket Kittur