<会議発表論文>
An Efficient Mapping for Score of String Matching

作成者
本文言語
出版者
発行日
雑誌名
開始ページ
終了ページ
出版タイプ
アクセス権
概要 This paper proposes an efficient algorithm to solve the problem of string matching with mismatches. For a text of length n and a pattern of length m over an alphabet Σ, the problem is known to be solv...ed in O(|Σnlogm|)time by computing a score by the fast Fourier transformation (FFT). Atallah et al. introduced a randomized algorithm in which the time complexity can be decreased by the trade-off with the accuracy of the estimates for the score. The algorithm in the present paper yields an estimate with smaller variance compared to that the algorithm by Atallah et al., moreover, and computes the exact score in O(|Σ|nlogm)time. The present paper also gives two methods to improve the algorithm and an exact estimation of the variance of the estimates for the score. Keywords: string matching with mismatches, FFT, convolution, deterministic algorithm, randomized algorithm.続きを見る

本文情報を非表示

2003_b_2 pdf 194 KB 53  

詳細

レコードID
査読有無
関連情報
主題
注記
タイプ
登録日 2009.04.22
更新日 2018.08.31