%0 Journal Article
%T Two-phrase Retrieval Strategy in Content Aware Network Storage System<br>内容感知存储系统中的两阶段检索策略
%A LIU Ke
%A QIN Lei-hua
%A ZHOU Jing-li
%A NTE Xue-jun
%A ZENG Dong
%A <br>刘科
%A 秦磊华
%A 周敬利
%A 聂雪军
%A 曾东
%J 计算机科学
%D 2011
%I 
%X As the storage capacity approach Exabytes, how to efficiently organize, find and manage data is becoming increasingly difficult for us. The query requests in storage system are coming from two aspects, the first one is metadata retrieval delivered by administrator and the second one is user's common keyword query. But the functions of de-duplication and block similarity detection in content aware storage system are not utilized to enhance the above query processing. In order to take advantage of the upper semantic information and the lower storage system's duplicate block information to deliver efficient query service for users, a two-phrase retrieval strategy was introduced. It combined metadata/keyword query with block similarity query and utilized ranking coefficient to evaluate similarity among query resups. The experiments indicate that the retrieval strategy has efficiently enhanced the retrieval recall.
%K Metadata
%K Data migration
%K Content addressable storage
%K Two-phrase retrieval
%K Content aware<br>元数据，数据迁移，内容寻址存储，两阶段检索，内容感知
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=1B05AF3A945B6C536113846E826B9810&yid=9377ED8094509821&vid=16D8618C6164A3ED&iid=94C357A881DFC066&sid=A04140E723CB732E&eid=EA389574707BDED3&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=14