![]() ![]() So, from the UML sequence diagrams of XMI file, extract the key data, structure information, including the static structure and dynamic behavior, the assembly way, need to a few key XMI file labels for data mining. Refers to the "constant" parts: Basic composition elements of UML sequence diagrams, such as classes, objects, messages, objects and the relationship between part of "change" refers to that the combination of the basic composition elements assembled segment, such as the "loop", "break", "Alt", "par" and "opt'', etc. ![]() Results: The UML sequence diagrams have "The same" part, there are also a part of the "change". Materials and Methods: In this study, the UML sequence diagram is decomposed into the basic composition elements and the combination of several segments of combination, the basic composition elements are mapped to the corresponding components in the PI calculus and combination fragment is given operational semantics and then converted to PI calculus. Sai Dong Lv and Dong Xia Liu Background: The UML sequence diagram is a metamodel, didnt have the precise formal semantics, system design and development personnel cannot be observed system dynamic performance and cant realize system automatic reasoning and proof: On the other hand, in a state diagram and sequence diagram in UML, different sides of the same system, semantic inconsistencies may occur, because do not have form semantics, UML diagrams so unable to detect different types of conflict between the semantics of the UML subgraph.
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