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Parallel transitive closure and transitive reduction algorithms
Proceedings. PARBASE-90: International Conference on Databases, Parallel Architectures, and Their Applications, 2002The authors provide distinct algorithms for computing transitive closure and transitive reduction with sequential time complexities of O( Sigma e/sub i/) and O(n/sup 2/+ Sigma e/sub i/), respectively, and parallel time complexities of O(e/sub i/) And O(n+e/sub i/), respectively.
Pintsang Chang, Lawrence J. Henschen
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Regular Path Query Evaluation Sharing a Reduced Transitive Closure Based on Graph Reduction [PDF]
, 2022 Regular path queries (RPQs) find pairs of vertices of paths satisfying given regular expressions on an edge-labeled, directed multigraph. When evaluating an RPQ, the evaluation of a Kleene closure (i.e., Kleene plus or Kleene star) is very expensive ...
Yang-Sae Moon +2 more
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Angewandte Chemie International Edition, 2021
AbstractTemperature‐programmed reduction of transition‐metal phosphate precursors is the most commonly used method for the preparation of transition‐metal phosphides (a new class of versatile metal catalysts), but the reduction processes are still not clear.
Qiang Sheng +5 more
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AbstractTemperature‐programmed reduction of transition‐metal phosphate precursors is the most commonly used method for the preparation of transition‐metal phosphides (a new class of versatile metal catalysts), but the reduction processes are still not clear.
Qiang Sheng +5 more
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On building the transitive reduction of a two-dimensional poset
Information Processing Letters, 1997zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Enrico Nardelli +2 more
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Innovations to the Vertical Reduction Mammaplasty: Making the Transition
Annals of Plastic Surgery, 2003The vertical reduction mammaplasty can be challenging to learn. In addition, first attempts to perform the vertical reduction mammaplasty can lead to inconsistent aesthetic results. The authors describe their transition from a traditional inverted-T reduction mammaplasty to a modified vertical reduction mammaplasty based on a technique described by ...
Constance M, Chen +2 more
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Dimensional reduction near a phase transition
Physical Review D, 1986The dimensional-reduction hypothesis is tested in theories with a first-order phase transition. Five-dimensional SU(2) lattice gauge theory has a confined phase which resembles the two-dimensional theory; across the phase transition this resemblance is lost and the string tension vanishes.
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On minimum flow and transitive reduction
1988In general, a flow problem G=(V,E,b,c) is given by a directed graph G=(V, E) and the two functions b and c on the set of edges, where b(e) means a lower and c(e) an upper bound. The aim is: Find a maximum (minimum) flow function f subject to the condition that $$0 \leqslant b(e) \leqslant f(e) \leqslant c(e) \leqslant \infty \forall e \in E ...
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Transitive Reduction for Social Network Analysis and Visualization
The 2005 IEEE/WIC/ACM International Conference on Web Intelligence (WI'05), 2005In this paper, we will show that transitive reduction can be used in real, large social networks analysis. Transitive reduction is an edge-removing operation on directed graphs, that preserves some important properties and structures of the graph. After a presentation of this tool interest, we will show its properties and how to use it.
Vincent Dubois, Cécile Bothorel
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Transition metal-mediated reductive coupling of diazoesters
Chemical Communications, 2019The first transition-metal mediated reductive coupling of diazoesters is reported. The reaction proceeds via a κ2-coordinated intermediate, featuring significant radical character on the terminal nitrogen.
Amanda Grass +3 more
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Study of methods for model reduction in transition systems
SMC 2000 Conference Proceedings. 2000 IEEE International Conference on Systems, Man and Cybernetics. 'Cybernetics Evolving to Systems, Humans, Organizations, and their Complex Interactions' (Cat. No.00CH37166), 2002We consider the reinforcement learning problem where the agent interacts with the environment by taking actions. The agent receives some reward from the environment and changes state as a result. The problem is to find a good policy in large transition systems such that the agent's value function is maximized.
Sudeshna Sarkar +2 more
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