Titlebook: Combinatorial Pattern Matching; 6th Annual Symposium Zvi Galil,Esko Ukkonen Conference proceedings 1995 Springer-Verlag Berlin Heidelberg 1

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Smart Grids: Security and Privacy Issuesne of the trees can have an arbitrary degree. Finally, we consider the problem of optimally transforming a tree into another by transferring subtrees around. It is shown that computing the subtree-transfer distance is NP-hard and an approximation algorithm with performance ratio 3 is given.

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On the complexity of comparing evolutionary trees,ne of the trees can have an arbitrary degree. Finally, we consider the problem of optimally transforming a tree into another by transferring subtrees around. It is shown that computing the subtree-transfer distance is NP-hard and an approximation algorithm with performance ratio 3 is given.

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0302-9743 ch as the design and analysis of algorithms for pattern matching problems in strings, graphs, and hypertexts, as well as in biological sequences and molecules.978-3-540-60044-2978-3-540-49412-6Series ISSN 0302-9743 Series E-ISSN 1611-3349

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Energy Efficiency in a Mobile World the best existing method by Katzenelson, Pinter and Schenfeld by a factor of at least ¦.¦. We also present an algorithm for the directed graph topological embedding problem which runs in time . and space .(¦.¦×¦.¦+¦.¦+¦.¦), where ¦.¦ is the number of nodes in the pattern graph .. To our knowledge, this algorithm is the first one for this problem.

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Pattern matching in directed graphs, the best existing method by Katzenelson, Pinter and Schenfeld by a factor of at least ¦.¦. We also present an algorithm for the directed graph topological embedding problem which runs in time . and space .(¦.¦×¦.¦+¦.¦+¦.¦), where ¦.¦ is the number of nodes in the pattern graph .. To our knowledge, this algorithm is the first one for this problem.

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