16430 search results - page 178 / 3286 » On Computable Tree Functions |
185
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IWOCA
2010
Springer
15 years 1 months ago
2010
Springer
A homomorphism from a graph G to a graph R is locally surjective if its restriction to the neighborhood of each vertex of G is surjective. Such a homomorphism is also called an R-r...
163
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ICPR
2006
IEEE
16 years 7 months ago
2006
IEEE
This paper describes a novel Recursive Neural Network for adaptive processing of FacE Emotion Tree Structures (FEETS). We proposed to use tree structures to represent Gabor Face E...
145
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CHI
2006
ACM
16 years 6 months ago
2006
ACM
We present PygmyBrowse, a browser that allows users to navigate a tree data structure in a limited amount of display space. A pilot evaluation of PygmyBrowse was conducted, and re...
207
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MFCS
2001
Springer
15 years 10 months ago
2001
Springer
We show that it is not possible to approximate the minimum Steiner tree problem within 1 + 1 162 unless RP = NP. The currently best known lower bound is 1 + 1 400. The reduction i...
149
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GD
2008
Springer
15 years 7 months ago
2008
Springer
We consider straight-line drawings of trees on a hexagonal grid. The hexagonal grid is an extension of the common grid with inner nodes of degree six. We restrict the number of dir...