Abstract

정수로 표현된 문자열에 대한 (δ, γ)-매칭은 음악서열이나 주가 연구에 응용될 수 있다. 본 논문에서는 정수문자집합에 대한 문자열의 δ-근사주기와 γ-근사주기의 개념을 제시한다. 또한 최소 δ-근사주기와 최소 γ-근사주기를 각각 O(n²) 시간에 찾는 알고리즘들을 제시하고 수행시간을 측정한 결과를 보인다. (δ, γ)-matching for strings over integer alphabets can be applied to such fields as musical melody and share prices on stock markets. In this paper, we define δ-approximate periods and γ-approximate periods of strings over integer alphabets. We also present two O(n²) - time algorithms, each of which finds minimum δ-approximate periods and minimum γ-approximate periods, respectively. Then, we provide the experimental results of execution times of both algorithms.

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