Finally, the time is signed on entity and record, and non-topological data model is adopted to organize spatial data.
时间标记在实体和元组级上，空间数据采用非拓扑数据模型。
At present, there isn't a clear definition and description of spatiotemporal topological relationships which is a conceptual and formal basis of spatiotemporal data model.
目前，国际上对于作为时空数据模型概念和形式化基础的时空拓扑关系定义和描述还没有一个明确的阐述。
The experiments showed that the model can work efficiently and practically, and keep the topological insistency of the vector spatial data.
实验表明，该模型不仅可行，而且高效，并保持了空间要素和要素之间的几何拓扑一致性。
A good forecast result has been concluded with a topological prediction model of gray system theory based on the observation data of ground water table in Lanxi County.
地下水枯水期水位预报对春季农业生产具有重要意义，利用兰西县地下水水位观测资料，应用灰色系统理论的拓扑预测建立模型进行预测，取得了较好的结。
Effectiveness of the model is validated by analyzing the model and data from real networks. The influence of model parameters on the topological structures of networks are concluded.
通过对比分析真实网络数据，对模型的有效性进行验证，并得出模型参数对网络拓扑结构的影响关系。
Effectiveness of the model is validated by analyzing the model and data from real networks. The influence of model parameters on the topological structures of networks are concluded.
通过对比分析真实网络数据，对模型的有效性进行验证，并得出模型参数对网络拓扑结构的影响关系。
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