Algorithm Research & Explore
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App. Res. of Comp. Printed Article
Vol. 37, 2020 No. 6
1702-1706,1749

Fast subsequence query algorithm based on short sequence grouping and assembling strategy

Fan Chunlong
Wang Jingyun
Teng Yiping
Ding Guohui
Large-scale Distributed System Laboratory in Liaoning Province, School of Computer, Shenyang Aerospace University, Shenyang 110136, China
DOI: 10.19734/j.issn.1001-3695.2018.11.0866

Abstract

Subsequence query technique has important applications in several fields such as finance, commerce and healthcare. However, due to the high time complexity of similarity comparison algorithms such as dynamic time warping(DTW), the length of subsequence has a great influence on the retrieval time, which limits the efficiency of long subsequence retrieval on data sets. This paper proposed a fast subsequence query algorithm based on short sequence grouping and assembling strategy. This algorithm first separated all subsequences which were in a given length in the data set into groups and marked out the representative subsequence for each group. Then it cut the query sequence into small query sequences with a fixed length during the query processing, and used DTW algorithm to compute the candidate sets of subsequences. The representative subsequence had a high similarity with the small query sequences. Finally, it assembled all the sequences in the candidate sets to derive the query result sequences. Experiments show that the efficiency of the new algorithm is about 10 times higher than that of the typical algorithm.

Foundation Support

国家自然科学基金资助项目(61303016)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2018.11.0866
Publish at: Application Research of Computers Printed Article, Vol. 37, 2020 No. 6
Section: Algorithm Research & Explore
Pages: 1702-1706,1749
Serial Number: 1001-3695(2020)06-020-1702-05

Publish History

[2020-06-05] Printed Article

Cite This Article

范纯龙, 王靖云, 滕一平, 等. 基于短序列分组和拼接策略的子序列快速查询算法 [J]. 计算机应用研究, 2020, 37 (6): 1702-1706,1749. (Fan Chunlong, Wang Jingyun, Teng Yiping, et al. Fast subsequence query algorithm based on short sequence grouping and assembling strategy [J]. Application Research of Computers, 2020, 37 (6): 1702-1706,1749. )

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  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.

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