expression dictionary 中文意思是什麼
expression dictionary
解釋
辭典語法- expression : n 1 表現，表示，表達。2 詞句；語句，措辭，說法。3 表情，臉色，態度；腔調，聲調。4 【數學】式，符...
- dictionary : n 字典，詞典；【自動化】代碼字典。 consult a dictionary 查閱詞典。 a walking [living] dictionary ...
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The feature of xrdb system is follow : the relation of xml element and it ' s son is keeped by relation - dictionary, as the same time the relation - dictionary keeped the element attributes, content and their corresponding in relation database. in order to get the more efficiency relation table, the dom tree of xml schema is trimed for getting orderliness xml schema. for efficiency rewrited path expression into sql, the relation dictionary keeps every xml element ' s absolute path
Xrdb系統的主要特色有：用關系字典保存xml元素的父子關系，元素的屬性，內容以及它們對應的關系數據庫表名，列名；對xml模式的dom樹進行修剪，使xml模式整潔，從而使映射得到的關系的更合理；關系字典保存了每個元素的絕對路徑，可以快速地把路徑查詢重寫為結構化查詢； xrdb的查詢結果是原來xml文檔的文檔片段。 -
Domain - dictionary based text representation can enhance the ability of text feature expression and reduce the feature dimensionality
基於領域詞典的文本特徵表示方法可以增強文本特徵表示能力。
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