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Title: Queries in a temporal modelling system
Authors: Yeo, G.K. 
Li, G.
Keywords: Structured modelling
Temporal structured modelling language
Time modelling
Time-specific query
Issue Date: 1999
Citation: Yeo, G.K.,Li, G. (1999). Queries in a temporal modelling system. Asia-Pacific Journal of Operational Research 16 (1) : 99-112. ScholarBank@NUS Repository.
Abstract: A temporal modelling framework (Yeo and Li, 1996) was proposed to allow dynamic modelling along the time dimension. Specifically, a new time genus with many variations has been added to the Structured Modelling (Geoffrion, 1987, 1989a, 1989b, 1991) framework. The variations take care of special properties of time in modelling such as orderedness and useful modelling concepts such as circular time and scoping among others. This paper further explores some possible time-specific queries based on the proposed temporal modelling framework. Because the knowledge has been embedded in a structured model, a simplified SQL-like manipulation language can be used to formulate the queries. Queries for retrieval, genus evaluation, and sensitivity analysis are discussed. It is believed that the exploration here would be helpful in designing a unified query language in modelling.
Source Title: Asia-Pacific Journal of Operational Research
ISSN: 02175959
Appears in Collections:Staff Publications

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