signed digraph 中文意思是什麼
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As an extension of the traditional signed digraph model, layered digraph models make hazard and operability analysis more thorough and systematic, which improves the capability of the expert system in identification of the potential safety hazards in the chemical processes
它拓展了傳統的有向圖模型，從而使危險和可操作性分析的結果更全面、更系統，提高了專家系統全面挖掘化工過程中潛在的安全危險問題的能力。 -
To overcome the knowledge representation limitations of the traditional signed digraph model based expert systems for hazard and operability analysis, a novel layered digraph model for automating process hazard and operability analysis is proposed based on the graphical theory by decoupling the two dimensional signed digraph models in the three dimensional space
摘要為克服傳統的基於有向圖模型的危險和可操作性分析專家系統在知識表達方面的局限性，通過將二維的有向圖模型在三維空間的解耦，採用圖論的方法，提出了一個可以用於危險和可操作性分析自動化的有向架模型。
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