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DEXAW
2007
IEEE
92views Database» more  DEXAW 2007»
15 years 11 months ago
Subtree Testing and Closed Tree Mining Through Natural Representations
Several classical schemes exist to represent trees as strings over a fixed alphabet; these are useful in many algorithmic and conceptual studies. Our previous work has proposed a...
José L. Balcázar, Albert Bifet, Anto...
ICCS
2007
Springer
15 years 11 months ago
Mining Frequent Closed Unordered Trees Through Natural Representations
Abstract. Many knowledge representation mechanisms consist of linkbased structures; they may be studied formally by means of unordered trees. Here we consider the case where labels...
José L. Balcázar, Albert Bifet, Anto...
135
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SIAMSC
2010
117views more  SIAMSC 2010»
15 years 3 months ago
A New Multiscale Representation for Shapes and Its Application to Blood Vessel Recovery
In this paper, we will first introduce a novel multiscale representation (MSR) for shapes via level set motions and partial differential equations (PDEs). Based on the MSR, we wi...
Bin Dong, Aichi Chien, Zuowei Shen, Stanley Osher
EC
2010
127views ECommerce» more  EC 2010»
15 years 2 months ago
Representation Invariant Genetic Operators
A genetic algorithm is invariant with respect to a set of representations if it runs the same no matter which of the representations is used. We formalize this concept mathematica...
Jonathan E. Rowe, Michael D. Vose, Alden H. Wright
IJCNN
2008
IEEE
15 years 11 months ago
Knowledge representation and acquisition for large-scale semantic memory
Abstract—Acquisition and representation of semantic concepts is a necessary requirement for the understanding of natural languages by cognitive systems. Word games provide an int...
Julian Szymanski, Wlodzislaw Duch