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COSIT
1993
Springer
206views GIS» more  COSIT 1993»
15 years 10 months ago
Cognitive Maps, Cognitive Collages, and Spatial Mental Models
Although cognitive map is a popular metaphor for people's mental representations of environments, as it is typically conceived, it is often too restrictive. Two other metaphor...
Barbara Tversky
ICDE
2007
IEEE
96views Database» more  ICDE 2007»
15 years 10 months ago
Mining Software Data
Data mining techniques and machine learning methods are commonly used in several disciplines. It is possible that they could also provide a basis for quality assessment of softwar...
Burak Turhan, F. Onur Kutlubay
DIAGRAMS
2006
Springer
15 years 10 months ago
Exploring the Notion of 'Clutter' in Euler Diagrams
Abstract. Euler diagrams are an effective and intuitive way of representing relationships between sets. As the number of sets represented grows, Euler diagrams can become `cluttere...
Chris John, Andrew Fish, John Howse, John Taylor
CIAC
2010
Springer
282views Algorithms» more  CIAC 2010»
15 years 9 months ago
Improved Approximations for TSP with Simple Precedence Constraints
In this paper, we consider variants of the traveling salesman problem with precedence constraints. We characterize hard input instances for Christofides' algorithm and Hoogeve...
Hans-Joachim Boeckenhauer, Ralf Klasing, Tobias Mo...
SODA
2004
ACM
146views Algorithms» more  SODA 2004»
15 years 7 months ago
Approximating the two-level facility location problem via a quasi-greedy approach
We propose a quasi-greedy algorithm for approximating the classical uncapacitated 2-level facility location problem (2-LFLP). Our algorithm, unlike the standard greedy algorithm, ...
Jiawei Zhang