aggregation problem 中文意思是什麼

aggregation problem 解釋
加總問題
  • aggregation : n. 1. 聚合，集合，凝聚，集成。2. 【植物；植物學】族聚；【動物；動物學】群聚。3. 集團，聚合體，集成體。adj. -gative
  • problem : n. 1. 問題，課題；疑難問題；令人困惑的情況。2. 【數、物】習題；作圖題。3. （象棋的）布局問題。adj. 1. 成問題的；難處理的。2. 關于社會問題的。
  1. Traditional most adopted practical method " aggregation / disaggregation " has temporal inconsistency problem because it discards the other level as it ' s at one level

    傳統的聚集解聚方法存在時序一致性問題，因為它在一種解析度下可能丟棄另一個解析度情形下的數據。
  2. 5 ) to solve the uncertain modeling problem about hydraulic buildings, a new modeling method named aggregation modeling based on graph object technique is put forward. as a result, the graph model of solid gravity dam is designed. the graph object of water _ proof dam section taken as an example, the design and implement of self defined graph object is discussed

    5 ）根據水工建築物不定型建模的特點，提出一種基於圖形對象技術的聚合建模方法，詳細討論了聚合建模法的基本原理；設計了實體重力壩的圖形對象模型，並以擋水壩段圖形對象的設計為例，研究了自定義圖形對象的設計和實現；基於objectarx的通知? ?反應機制，採用數據庫反應器和對象反應器，建立了圖形對象的互動操作機制；以擋水壩段斷面優化設計為例，研究了圖形對象和分析、計算功能的集成方案。
  3. Abstract by setting up a network model of data aggregation and using a bit - hop metric to quantify energy costs in wireless sensor networks, we formally analyze the problem of area - based data aggregation and obtain that data aggregation will definitely be energy efficient when the relative difference between the average lengths of the two shortest paths, which are from source sensor nodes to the sink and to the aggregation node respectively, is not less than the ratio of data correlation to the number of source sensor nodes

    摘要通過抽象出無線傳感器網路中區域數據回傳的網路模型，定量研究了區域數據聚合的節能條件，證明了先聚合再回傳比直接進行數據回傳所節省的相對路徑長度，如果大於等於數據相關性與源節點個數的比值時，區域數據聚合一定可以節省能耗，並進一步給出了當數據聚合點在網路的不同位置，或數據的空間相關性不同時，區域數據聚合的節能條件。
  4. 2 ) by analyzing the information and conditional information description mechanism of system states, the problem of stochastic model reduction is investigated based on state aggregation. the information loss and conditional information loss between the full - and reduced - order models are measured by entropy, while the independence and conditional independence within me components of aggregated state are measured by kullback - leibler information distance. several model reduction methods for stable and unstable linear systems are derived by employing two criteria to get aggregation matrices : the minimal information loss and the maximal independence

    2 ）分析了隨機系統狀態空間模型中的信息和條件信息描述機制，以shannon熵為手段描述線性系統模型降階過程中的信息和條件信息損失，以kullback - leibler信息作為衡量降階模型狀態向量各分量之間統計獨立性的測度，針對穩定和不穩定系統研究基於狀態集聚的模型降階問題：分別運用最小信息損失準則和最大獨立性原則，得出幾種狀態集聚的信息論方法，並討論降階模型的性質、階次的確定、系統噪聲分佈特性等問題。
  5. Abstract : the order reduction problem of the system state feedback and output feedback controllers is discussed according to the inclusion princip l e of linear discretetime stochastic systems. two kinds of conditions, restrictio n and aggregation, are presented for the controller order reduction. by designing the order reduced feedback controller for a 9order system, the properties of th e reduced order controllers and all order controllers are discussed

    文摘:根據線性離散隨機系統的包含原理1 ，研究了系統的狀態反饋和輸出反饋控制器的降階問題.給出了控制器降階兩種類型：聚集和約束.通過一個9階系統控制器的設計，討論降階控制器和全階控制器的性能
  6. Second, the issue of approximate aggregation query on the data streams is discussed. meanwhile, the approximate query theories based on the histogram synopsis is proposed, and the autosuited histogram synopsis method and the histogram synopsis synchronization method are provided. third, the problem of predictive aggregate queries on the continuous data streams is researched, and a new predictive aggregate query method based on basic window synopsis and predictive equation is given

    本文圍繞連續數據流上的聚集查詢展開討論，首先針對數據流上的精確聚集查詢問題，提出3種改進的基於滑動窗口的精確聚集查詢演算法，這三種演算法可以在消耗很少內存的情況下提供高效準確的查詢結果;其次討論了連續數據流上的近似聚集查詢問題，給出了基於數據流滑動窗口的直方圖大綱理論，並提出了適用於滑動窗口的自適應直方圖大綱生成演算法和大綱同步策略;最後討論了連續數據流上的預測聚集查詢問題，提出了一種基於基本窗口及預測方程方法的預測聚集查詢演算法。
  7. The wage unit is another way to solve the aggregation problem, but the aggregation by this way represents the value relation in the money economy system rather than the gross of actual goods

    但由此得到的經濟總量並非實物的加總，而是體現了貨幣經濟體制下的價值關系。
  8. After analysis of inherit, logical and aggregation relationships among the objects, the object sets of problem domain, system data structure and application frameworks were designed, and the system extensibility was also discussed

    通過對象之間繼承關系、邏輯關系和聚合關系的分析，設計了領域問題對象集、系統數據結構和應用框架，並討論了系統的可擴充性。
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