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UM
2007
Springer
16 years 15 days ago
Identifiability: A Fundamental Problem of Student Modeling
In this paper we show how model identifiability is an issue for student modeling: observed student performance corresponds to an infinite family of possible model parameter estimat...
Joseph E. Beck, Kai-min Chang
ICPR
2006
IEEE
16 years 13 days ago
Fast Feature Extraction Approach for Multi-Dimension Feature Space Problems
Recently, we proposed a fast feature extraction approach denoted FSOM utilizes Self Organizing Map (SOM). FSOM [1] overcomes the slowness of traditional SOM search algorithm. We i...
Alaa El. Sagheer, Naoyuki Tsuruta, Rin-ichiro Tani...
WADS
2005
Springer
108views Algorithms» more  WADS 2005»
15 years 12 months ago
Improved Fixed-Parameter Algorithms for Two Feedback Set Problems
Abstract. Settling a ten years open question, we show that the NPcomplete Feedback Vertex Set problem is deterministically solvable in O(ck ·m) time, where m denotes the number of...
Jiong Guo, Jens Gramm, Falk Hüffner, Rolf Nie...
GECCO
2010
Springer
168views Optimization» more  GECCO 2010»
15 years 10 months ago
Elementary landscapes of frequency assignment problems
We analyze various forms of the Frequency Assignment Problem using the theory of elementary landscapes. We show that three variants of the Frequency Assignment Problem are either ...
L. Darrell Whitley, J. Francisco Chicano, Enrique ...
EVOW
2005
Springer
15 years 12 months ago
Analyzing Fitness Landscapes for the Optimal Golomb Ruler Problem
We focus on the Golomb ruler problem, a hard constrained combinatorial optimization problem. Two alternative encodings are considered, one based on the direct representation of sol...
Carlos Cotta, Antonio J. Fernández