摘要
The paper puts forward a formal framework for representing, manipulating a wide riety of models,and organizing the detailed data. The framework uses a hierarchically aryclic graph combined with hierarchical spreadsheets to represent the semantic as well as the physical structure of a model. The hierarchically acyclic graph naturally incorporates the idea of hierarchical decomposition or bottom-up composition. The hierachical spreadsheets are an excellent representation forthe hierarchically acyclic graph, and provide the conceptual framework for spreadsheet systems of surprisingly general applicability. In this case, a model can be uniquely decomposed into seveal basic models, and a basic models, and a basic model may be represented by a hierarchical spreadsheet which closely connects with the relational theory so that model integration is a direct corollary of the relation join. Moverover, the framework standardizes model definition and model integration,is very natural way of thinking and reasoning for modeling, and demonstrates the simplicity and understandability.
The paper puts forward a formal framework for representing, manipulating a wide riety of models,and organizing the detailed data. The framework uses a hierarchically aryclic graph combined with hierarchical spreadsheets to represent the semantic as well as the physical structure of a model. The hierarchically acyclic graph naturally incorporates the idea of hierarchical decomposition or bottom-up composition. The hierachical spreadsheets are an excellent representation forthe hierarchically acyclic graph, and provide the conceptual framework for spreadsheet systems of surprisingly general applicability. In this case, a model can be uniquely decomposed into seveal basic models, and a basic models, and a basic model may be represented by a hierarchical spreadsheet which closely connects with the relational theory so that model integration is a direct corollary of the relation join. Moverover, the framework standardizes model definition and model integration,is very natural way of thinking and reasoning for modeling, and demonstrates the simplicity and understandability.
