xiss meaning in Chinese

希斯

Main characteristics of dbxi are : 1 ) a new xml numbering scheme is adopted which enables each element in xml documents carries corresponding dtd structural information . 2 ) a path query with n elements ( or attributes ) and a predicate restriction can be implemented with only 0 or 2 structural join operations per xml document while at least n - 1 times of structural join operations are needed in xiss ( xiss is a kin xml indexing system developed by q . li and b . moon ) . 3 ) for a path expression that is not complying with any paths in xml documents , dbxi can give a judgment of no answer in much shorter time than that of sphinx , xiss , etc . experimental results demonstrate that dbxi can process path expressions much faster than lore sphinx and xiss do
Dbxi的主要特点是： 1 )采用了新的xml编码方法，使xml文档中每个元素属性的编码携带了相应的dtd结构信息； 2 )对一个由n个元素属性组成的有一个谓词约束的路径表达式， dbxi处理每个xml文档，由同类系统xiss所需的至少n - 1次结构连接运算，降低至0次或2次结构连接运算； 3 )如果查询路径在待查xml文档中不存在正确的匹配结构， dbxi能够在比国际上的sphinx和xiss等xml索引方法较短的时间内给出无查询结果的判断。