rough cost 中文意思是什麼
rough cost
解釋
不精確的成本-
Typical categories are 1 - 3 days, 3 - 10 days, or greater than 10 days. a rough order of magnitude estimate establishes an approximate cost for a scenario or quality of service requirement
通常的分類為1 - 3天、 3 - 10天或10天以上。通過粗數量級估計可獲知某方案或服務質量要求的大致成本。 -
Based on the feature technology and object - oriented mechanism, we found the manufacture - oriented three levels ( namely part, feature and geometry ) model of mechanical part and the resource model ; secondly, we realize the concurrent design of mechanical part and process through decomposing cycle, and then we constitute the evaluation guidelines on the basis of evaluation strategy of levels, which carry out from two levels ( part and feature ) and four phases ( part rough evaluation, feature rough evaluation, feature detail evaluation and part general evaluation ) ; thirdly, we put forward some evaluation methods according the evaluation guidelines, which include the rule - based process evaluation method, rule - based and fuzzy evaluation - based method associated with resources, case - bas ed and feature - based cost estimation method ; at last, we give a manufacturing - oriented evaluation system of rotating mechanical part, which validate the evaluation guidelines and method of the dissertation useful and practical
以特徵技術為基礎，面向對象的編程機制為手段，建立了面向製造的三層次（即零件層、特徵層、幾何層）零件模型；同時進行了面向製造的資源建模。第二，通過細化循環，採用分層遞階的評價策略，分兩層（零件層和特徵層）四個階段（零件初評價、特徵初評價、特徵詳細評價和零件總體評價）建立可製造性評價指標；第三，以評價指標為基礎，分別提出了基於規則的結構工藝性評價方法、基於規則和模糊綜合評判定性和定量相結合的加工可行性評價方法、以及基於實例和特徵的加工成本估算方法；最後，以solidworks為開發平臺， vb6為編程工具，初步構建了面向製造的回轉類零件可製造性評價系統，它們驗證了本文評價指標和評價方法的實用性和可行性。 -
Prediction of aircraft fuselage development cost by support vector machines based on rough sets theory
基於粗支持向量機的飛機機體研製費用預測 -
Considering the ability of rough sets theory to analysis of incompleteness and uncertainty in data, and that of ( fuzzy ) neural networks to pattern recognition, a solution of integration was presented for intelligent diagnosis. diagnosis decision system was reducted based on rough sets theory to find the key conditions for diagnosis, so that the cost can be reduced, and the efficiency can be raised
該方案的基本思想是利用粗糙集理論對數據不完整性和不確定性的分析處理能力實現故障診斷知識發現，即從監測診斷數據或診斷案例中發現關鍵診斷條件，提取或優化診斷規則，在最優診斷決策系統的基礎上，設計神經網路或模糊神經網路，利用其模式識別能力實現故障診斷。 -
Meta - information generation and maintenance ), which will lessen the cost of data pre - processing. rough decision support method is proposed to overcome the disadvantages described in the second observation
論文還針對現存粗糙集方法在規則約簡過程中決策表的決策支持能力損失問題，提出粗糙決策支持方法以彌補現存方法的不足。
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