Algorithms and Computation: 21st International Symposium, by Otfried Cheong, Kyung-Yong Chwa, Kunsoo Park

By Otfried Cheong, Kyung-Yong Chwa, Kunsoo Park

This quantity includes the complaints of the twenty first Annual overseas S- posium on Algorithms and Computations (ISAAC 2010), held in Jeju, Korea in the course of December 15-17, 2010. earlier variants were held in Tokyo, Taipei, Nagoya,HongKong,Beijing,Cairns,Osaka,Singapore,Taejon,Chennai,Taipei, Christchurch, Vancouver, Kyoto, Hong Kong, Hainan, Kolkata, Sendai, Gold Coast, and Hawaii through the years 1990-2009. ISAACis anannualinternationalsymposiumthatcoversthe verywide diversity of subject matters in algorithms and computation. the most objective of the symposium is to supply a discussion board for researchers operating in algorithms and the speculation of computation the place they could alternate principles during this lively examine neighborhood. in keeping with the decision for papers, ISAAC 2010 bought 182 papers. each one submission was once reviewed through not less than 3 application Committee contributors with the help of exterior referees. in view that there have been many high quality papers, this system Committee's job used to be tremendous di?cult. via an intensive dialogue, this system Committee accredited seventy seven of the submissions to be p- sented on the convention. unique matters, one in all Algorithmica and one of many overseas magazine of Computational Geometry and Applications,were ready with chosen papers from ISAAC 2010. the easiest paper award was once given to "From Holant to #CSP and again: c DichotomyforHolant Problems"byJin-YiCai,SangxiaHuangandPinyanLu, and the simplest scholar paper award to "Satis?ability with Index Dependency" via Hongyu Liang and Jing He. eminent invited speakers,David Eppstein from UniversityofCalifornia,Irvine,andMattFranklinfromUniversityofCalifornia, Davis, additionally contributed to this quantity

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Additional info for Algorithms and Computation: 21st International Symposium, ISAAC 2010, Jeju Island, Korea, December 15-17, 2010, Proceedings, Part II

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Node u that contains a returns to v all elements in this range. If all elements of u are reported then the range query is forwarded to the right adjacent node (inorder traversal) and continues until an element larger than b is reached for the first time. Updates and Load Balancing. Assume that an update operation is initiated at node v involving element α. By invoking a search operation we locate node u with range containing element α. Finally, the update operation is performed on u. The main issue is how to balance the load to all nodes of the overlay as much equally as possible.

Given a string T over an alphabet Σ, the suffix tree ST occupies O(|T |) space. For any pattern P , μ(P ) can be determined in O(|P |) time, and all occurrences of P in T can be found in O(|P | + occ) time, where occ is the number of occurrences. The segment tree GT of interval [1, n] is an ordered balanced binary tree with n leaves, where the ith leaf represents the elementary interval [i, i], and each internal node v represents the union of the intervals represented by its descendant leaves. All intervals represented by the nodes in the segment tree are standard intervals.

We have the following. Theorem 1. We can construct an O(n)-word index for a string T over a finite alphabet, so that a positional pattern matching query can be answered in O(p) time for any short pattern P . 2 An Index for Long Patterns In this section, we present an O(n)-word PPM index with O(p + log n) = O(p) query time for a long pattern. Recall that in the suffix tree, we maintain an array L and two indices bv , ev at each internal node v such that Lv is the set of numbers in L[bv , ev ]. Thus, given a PPM query (P, s), the desired answer is succ(L[bμ(P ) , eμ(P ) ], s).

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