CAJ | 학술논문

分析了当前信息检索多是建立在语词匹配基础上的搜索,索引库不断增大,搜索时间长等问题.通过对文本检索步骤和索引结构的研究表明,索引结构是决定文本检索效率的关键.提出对动态索引结构B＋树进行改进,通过改进减少了索引层数,提高了检索速度,降低了索引存储空间,研究结果对改进文本检索效率具有积极意义.
분석료당전신식검색다시건립재어사필배기출상적수색,색인고불단증대,수색시간장등문제.통과대문본검색보취화색인결구적연구표명,색인결구시결정문본검색효솔적관건.제출대동태색인결구B＋수진행개진,통과개진감소료색인층수,제고료검색속도,강저료색인존저공간,연구결과대개진문본검색효솔구유적겁의의.
Most of information retrieval based on key words of matching at present.This paper aims at the problem of index database continuously increasing,which make for inefficient retrieval.This paper studies the structure of text index and gives the new tree based on dynamic index B＋ tree.The new index structure cuts down the depth of index,improves retrieval speed and reduces storage area,which is of great importance improve text retrieval efficiency.