kleen 中文意思是什麼
kleen
解釋
克倫-
The thesis simplely discusses three question about content query : simple query ( also called matching ), field query and boolean query. the thesis gives five basic path query expression, namely simple regular path expression, order regular path expression, attribute regular path expression, value regular path expression and kleen closure regular path expression. the thesis summarizes four operation for the five basic regular path expression : pc operation ( parent - child ), ad operation ( ancestor - descendant ), co operation ( containment ), or operation ( order )
在研究結構查詢技術時，本文提出了五種基本的路徑表達式，即簡單路徑表達式、含序路徑表達式、屬性路徑表達式、含值路徑表達式和kc路徑表達式，本文研究了這五種基本路徑表達式的實現方式，通過分析這五種路徑表達式的實現，筆者提出了四種針對結構信息的基本操作，即pc操作、 ad操作、 co操作和or操作。
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