行聚合函數 的英文怎麼說

中文拼音 [hángjùgěhánshǔ]
行聚合函數 英文
row aggregate function
  • 行 : 行Ⅰ名詞1 （行列） line; row 2 （排行） seniority among brothers and sisters:你行幾? 我行三。where...
  • 聚 : 動詞（聚集; 聚積） assemble; gather; get together
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 聚合 : 1 （聚集到一起） get together2 [化學] （單體結合成高分子化合物） polymerization; polymerize 3 [生...
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. In course of auto - focusing, the paper takes the sum of the square of gray difference as focal distance evaluation function to decided that image is in focus or not quickly and put forward an effective auto - focus searching way based on threshold value and curve fitting. these improve speed and precision of auto - focusing

    在自動聚焦過程中，論文採用了圖象的灰度差分的絕對值之和的平方作為焦距評價函數，解決了是否正確聚焦的快速判斷問題；採用了一種行之有效的基於閾值和曲線擬合的自動聚焦搜索方式，使聚焦速度和精度都得到了很大的提高。
  2. ( 4 ) based on the qualitative analysis results of geology and employing grey - clustering analysis method, the quantitatively discriminating pattern of the size of remaining oil potential is founded. through selecting feature indices and setting up brighten function and clustering weightiness of these indices, we can identify the most potential area ( s ) quantitatively

    通過合理選擇表徵剩餘油潛力的特徵指標、建立特徵指標的白化函數及其判別模式，對評價對象的各類潛力指標進行灰聚類分析，最終指出評價對象所屬的潛力級別。
  3. Incremental maintenance of quotient cube for sum and median. technical report 02 - 1, school of computing, nus, dec. 2, 2002, pp. 1 - 18. 18 wang w, feng j l, lu h j, yu j x. condensed cube : an effective approach to reducing data cube size

    針對非分佈型聚集函數如median ，提出了一種有效的滑動窗口技術，該技術和addset存儲結構的結合極大地減少了維護不可自維護型函數時所需要的存儲空間和運行時間。
  4. After looking up a large amount of native and foreign information, the materials used in the experiment were as follows : ptfe base, graphite filler, molybdenum disulfide filler, copper powder filler, carbon fiber and so on. the experimental method is that the formula was designed according to uniform experimental method, the relationship between formula and frictional property was found with spline function and then the representative test points were chosen from fitting curve to make verification test for optimization. the preparative technique of solid lubricant is cold - press sintering method

    經過查閱大量國內外文獻資料后確定原料為：聚四氟乙烯樹脂為基體，加入石墨、二硫化鉬、銅粉、碳纖維等填料；試驗方法為：根據均勻試驗方法設計配方，用樣條函數找出配方與摩擦性能的關系，然後在擬合曲線上選取具有代表性的試驗點進行驗證試驗，達到優化的目的；制備工藝：冷壓燒結法制備固體潤滑劑。
  5. In this text, we first do some research on the genetic algorithm about clustering, discuss about the way of coding and the construction of fitness function, analyze the influence that different genetic manipulation do to the effect of cluster algorithm. then analyze and research on the way that select the initial value in the k - means algorithm, we propose a mix clustering algorithm to improve the k - means algorithm by using genetic algorithm. first we use k - learning genetic algorithm to identify the number of the clusters, then use the clustering result of the genetic clustering algorithm as the initial cluster center of k - means clustering. these two steps are finished based on small database which equably sampling from the whole database, now we have known the number of the clusters and initial cluster center, finally we use k - means algorithm to finish the clustering on the whole database. because genetic algorithm search for the best solution by simulating the process of evolution, the most distinct trait of the algorithm is connotative parallelism and the ability to take advantage of the global information, so the algorithm take on strong steadiness, avoid getting into the local

    本文首先對聚類分析的遺傳演算法進行了研究，討論了聚類問題的編碼方式和適應度函數的構造方案與計算方法，分析了不同遺傳操作對聚類演算法的性能和聚類效果的影響意義。然後對k - means演算法中初值的選取方法進行了分析和研究，提出了一種基於遺傳演算法的k - means聚類改進（混合聚類演算法） ，在基於均勻采樣的小樣本集上用k值學習遺傳演算法確定聚類數k ，用遺傳聚類演算法的聚類結果作為k - means聚類的初始聚類中心，最後在已知初始聚類數和初始聚類中心的情況下用k - means演算法對完整數據集進行聚類。由於遺傳演算法是一種通過模擬自然進化過程搜索最優解的方法，其顯著特點是隱含并行性和對全局信息的有效利用的能力，所以新的改進演算法具有較強的穩健性，可避免陷入局部最優，大大提高聚類效果。
  6. Typically, global functions perform database operations such as inserts, updates, deletes, and the aggregating of information, such as returning a count of customers in a table or the total charges for all items in a particular order

    通常，全局函數執行數據庫操作，如插入、更新、刪除和信息的聚合（如返回某表中客戶的計數或特定訂單中所有項的總價） 。
  7. Smtcpp parses to ci - - - programs by ll ( l ) method, extracts a lot of program ? information, such as classes, members and objects ; counts the indications, such as the number of method per class, the biggest complexity among methods, depth of inheritance tree, the number of children, coupling between object classes, response for class, and relative lack of cohesion in methods

    該工具利用ll （ 1 ）分析法對面向對象軟體的源程序進行語法分析，提取程序中有關類、類成員、成員函數等信息，從而計算出類的方法數、方法最大復雜度、繼承樹深度、孩子數目、耦合度、響應集、相對內聚缺乏度等的度量結果。
  8. Better segmentation effect can be attained by coding gray levels of pixels as eigenvector, taking advantage of histogram entropy principles function as fitness function, adopting ranking selection operation, making use of arithmetic crossover and mutation at a certain probability, combining with clustering analysis to initialize clustering center of the population to segment cells image with genetic algorithm

    以像素的灰度值為特徵向量進行編碼，利用直方圖熵法準則函數作為適應度函數，採用基於排名的選擇操作，以一定的概率進行算術交叉和變異，並結合聚類分析設定種群的聚類中心對細胞圖像進行遺傳聚類分割。
  9. To supplement those aggregate functions, you can define new aggregates that perform more complex arithmetic functions

    若要補充這些聚合函數，您可以定義執行更復雜算術函數的新聚合。
  10. In the second chapter, during the study of compound x - ray refractive lenses, diffraction function of compound lens is derived in the light of refraction and absorption effect and the design theory of x - ray is deduced using diffraction theory in connection with the characteristic of x - ray band. the structure design of this device and micro - machined technique are also discussed

    在第二章x射線聚焦組合透鏡的研究中，針對x射線波段的特性，綜合考慮折射和吸收效應得出組合透鏡的衍射屏函數，利用衍射理論推導出x射線聚焦組合透鏡的設計理論並進行結構設計與微細加工製作技術研究。
  11. These row aggregate functions are used with the compute clause

    下面是compute子句使用的行聚合函數。
  12. Row aggregate function

    行聚合函數
  13. The distinct keyword is not allowed with row aggregate functions when they are specified with the compute clause

    如果是用compute子句指定的行聚合函數，則不允許它們使用distinct關鍵字。
  14. Aggregate functions are designed to summarize detail rows, and are typically used in text boxes in the header or footer rows of a data region or a data region grouping

    聚合函數旨在用於匯總詳細信息行，通常在數據區域或數據區域分組的表頭行或表尾行的文本框中使用。
  15. Aimed at static image retrieval based on color, a multimedia image database which included three layers was designed and the search algorithm of the correlation and polymerization histogram was used in the article. to show color characteristic of image, the method of the hsb ( hue, saturation, brightness ) color space, which is suitable to the visual characteristic of human, is utilized. taking advance of human ' s feeling to color, it quantifies color sector with unequal interval, and get characteristic vector

    針對基於顏色的靜態圖像檢索，本文設計了一個三層的多媒體圖像數據庫，選用基於相關聚合直方圖的演算法，採用符合人類視覺特徵的hsb顏色空間來表示圖像的顏色特徵，利用人對顏色的感知來對顏色分量進行非等間隔的量化並形成特徵矢量，用距離度量函數進行圖像的相似性匹配。
  16. Each dimension must be aggregated using one aggregation function from the measure object

    每個維必須使用來自度量對象的一個聚合函數進行聚合。
  17. Distribution retention period in transactional replication, the amount of time transactions are stored in the distribution database. also referred to as the transaction retention period

    通過引用程序集，可以在sql server中創建公共語言運行時（ clr ）函數、 clr存儲過程、 clr觸發器、用戶定義聚合和用戶定義類型。
  18. Integration services includes graphical tools and wizards for building and debugging packages ; tasks for performing workflow functions such as sql command execution, ftp operations, and e - mail messaging ; data sources and destinations for extracting and loading data ; transformations for cleaning, aggregating, merging, and copying data ; a management service for administering integration services ; and application programming interfaces apis for programming the integration services object model

    Integration services包括用於生成和調試包的圖形工具和向導；用於執行工作流函數（如sql命令執行、 ftp操作和電子郵件消息處理）的任務；用於提取和加載數據的數據源和目標；用於清除、聚合、合併和復制數據的轉換；用於管理integration services的管理服務；以及用於對integration services對象模型進行編程的應用程序編程介面（ api ） 。
  19. Rather than retrieving an entire result set to an application and performing complex aggregate logic in the application, a. net aggregate function can perform the logic in the instance of the database engine and return only the final value to the application

    Net聚合函數不把整個結果集檢索到應用程序並在應用程序中執行復雜的聚合邏輯，而是在數據庫引擎的實例中執行此邏輯，並僅將最終值返回到應用程序。
  20. Cannot perform an aggregate function on an expression containing an aggregate or a subquery

    中文說：不能對包含聚合或字查詢的表達式執行聚合函數。
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