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Efficient Dynamic Index Structure for SSD (SPM)

SSD에 적합한 동적 색인 저장 구조 : SPM

  • 진두석 (한국과학기술정보연구원 정보기술연구실) ;
  • 김진숙 (한국과학기술정보연구원 정보기술연구실) ;
  • 류범종 (한국과학기술정보연구원 정보기술연구실) ;
  • 정회경 (배재대학교 컴퓨터공학과)
  • Published : 2010.02.28

Abstract

Inverted index structures have become the most efficient data structure for high performance indexing of large text collections, especially online index maintenance, In-Place and merge-based index structures are the two main competing strategies for index construction in dynamic search environments. In the above-mentioned two strategies, a contiguity of posting information is the mainstay of design for online index maintenance and query time. Whereas with the emergence of new storage device(SSD, SCRAM), those do not consider a contiguity of posting information in the design of index structures because of its superiority such as low access latency and I/O throughput speeds. However, SSD(Solid State Drive) is not well suited for traditional inverted structures due to the poor random write throughput in practical systems. In this paper, we propose the new efficient online index structure(SPM) for SSD that significantly reduces the query time and improves the index maintenance performance.

Keywords

Index Update;Inverted File;SSD

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