值索引 的英文怎麼說
中文拼音 [zhísuǒyǐn]
值索引
英文
occurrence index-
The following example shows a simple way to defragment all indexes in a database that is fragmented above a declared threshold
以下示例將展示一種簡單的方法,對數據庫中碎片數量在聲明的閾值之上的所有索引進行碎片整理。Field of the given name and has the value 1
欄位中的索引(並且值為1 ) 。Management data, boston, usa, 1984, pp. 47 - 54. 3 beckmann n, kriegel h - p, schneider r, seeger b. the r - tree : an efficient and robust access method for points and rectangles. in proc
對cdt索引來說,首先高維數據點通過k平均聚類演算法得到若干類,然後分別計算該點對應的始點與質心距離,並且將這兩個距離通過線性組合得到該點的復合索引鍵值。Also, when the auto create statistics database option is set to on default, the database engine automatically creates statistics for columns without indexes that are used in a predicate
另外,當auto _ create _ statistics數據庫選項設置為on (默認值)時,數據庫引擎自動為沒有用於謂詞的索引的列創建統計信息。Vsam arranges records by an index key, relative record number, or relative byte addressing
Vsam通過一個索引鍵值,相關記錄號或者相關位元組地址來組織記錄。For the sake of further improving performance, this paper made some improvements to sliq. first, we use a new splitting index to evaluate the “ goodness ” of the alternative splits for attributes instead of gini index. secondly, we regard categorical attributes with only two possible values as numeric attributes when evaluate splits
為了進一步提高分類準確率和速度,論文對sliq演算法作了一些改進:用新的屬性選擇度量代替gini索引,用處理連續值屬性的方法處理只有兩個可能值的分類屬性。Conf. management data, atlantic, usa, 1990, pp. 322 - 331
最後將該鍵值插入b - tree索引中。The sql server 2005 database engine does not allow creating a unique index on columns that already include duplicate values, whether or not ignore dup key is set to on
無論ignore _ dup _ key是否設置為on , sql server 2005數據庫引擎都不允許為已包含重復值的列創建唯一索引。Based on natural selection, it executes three same and simple genetic operators : selection, crossover and mutation. under the leading of fitness value, it makes an efficient searching in complex spaces until acquiring the best result
它基於自然選擇的原理,通過循環執行相同的、簡單的選擇、雜交和變異三種遺傳操作,並在適應度函數值的引導下對復雜的解空間進行有效地搜索,直到獲得最優的解。It is applicable to various structural distribution networks. while resolving the " large area restoration ", the genetic algorithm execute three same and simple genetic operators : selection, crossing and mutating. it make a self - adaptable and probability overall searching under the leading of fitness value in the whole searching scale until acquiring the best result
在求解網路故障后重構問題時,互動式模糊遺傳演算法通過循環執行相同的、極其簡單的選擇、雜交和變異三種遺傳操作,並在適應度函數值的引導下在搜索空間進行自適應概率性全局搜索,直至獲得全局最優解。The default indexer allows generic access to the query parameters maintained by this object
)的參數值。默認索引器允許對此對象維護的查詢參數進行一般訪問。This thesis divides into three parts : first, put forward the issue. do simple tracking review to the turbulence aggravated day by day, of the search engine market, put the time venation of search engine of our country in order, which is from scratch, and get to hot time, and analyse the reason why the search engine is well concerned and the market value, clarifying that the origin of the market fight lies in the impeling of economic benefits
本文分成三個部分,第一部分提出問題,對日益加劇的搜索引擎市場的動蕩作了簡單的跟蹤回顧,理清了我國搜索引擎從無到有,從有到熱的時間脈絡,並對搜索引擎受人關注的原因和市場價值作了自己的分析,闡明了市場爭奪戰的根源在於經濟利益的驅使。Threshold percentage of block space allowed per index entry
每個索引條目允許的塊空間的閾值百分比。Value, index field
索引欄值V, index field
索引欄值Replaces each indexed format item embedded in a source string with the formatted equivalent of a corresponding element in a list of values
System . io . textwriter的輸出方法的支持,該功能可以將嵌入源字元串中的每個索引格式項替換為值列表中對應元素的格式化等效項。Is then created with the value at its first and only index set to the value of
,其第一個(且是唯一一個)索引處的值也設置為值The process of setting up a file index or directory and writing the necessary values for indexed access of the file
建立文檔索引或目錄以及對文檔的索引訪問寫入所需值的過程。To set a position in an array by supplying the index of the value and then the next value by using code such as the following
設置數組中的某個位置(通過提供值索引) ,然後通過使用下列代碼設置下一個值:The combination of the subtree - based storage model with the document - based to ensure the efficiency and integrality of the data retrieval for all sorts of heterogeneous and context mixed data to the fullest extent ; 2. dynamically branching and merging combined with the data mapping mechanism, supports the xml document efficiently and can improve the operation capability of the system to some extent ; 3. referring to the characteristic of xquery, it presents a new operation language for xml data, xqul, which supports the query operation as well as the update operation on xml ; 4
本文提出了一套較為通用的非結構化信息的nativexml文檔存儲訪問策略和實現方案作為對非結構化信息存取機制研究的探索和嘗試,主要包括下列理論及技術: 1 .基於子樹和基於文檔的存儲模式相結合,以最大程度保證底層各類形式異構和內容混雜的數據存取的有效性和完整性; 2 .動態分枝合成技術和數據映像機制的引入,實現對xml文檔的有效支持,並在一定程度上提高系統處理性能; 3 .結合xquery查詢語言特點,提出一種新型xml數據操作語言xqul ,支持xml數據的查詢以及更新操作; 4 .三種索引(文檔索引、結構索引、值索引)的建立,為xml數據提供從站點到文檔,從文檔到元素的多級訪問策略。分享友人