منابع مشابه
Time Units and Calendars
We are investigating a formal representation of time units and calendars, as restricted temporal entities for reasoning about activities. We examine characteristics of time units, and provide a categorization of the hierarchical relations among them. Hence we define an abstract hierarchical unit structure (a calendar structure) that expresses specific relations and properties among the units th...
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The notion of time granularity comes into play in a variety of problems involving time representation and management in database applications, including temporal database design, temporal data conversion, temporal database inter-operability, temporal constraint reasoning, data mining, and time management in workflow systems. According to a commonly accepted view, any time granularity can be vie...
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Time and calendars play an important role in databases, on the Semantic Web, as well as in mobile computing. Temporal data and calendars require (specific) modeling and processing tools. CaTTS is a type language for calendar definitions using which one can model and process temporal and calendric data. CaTTS is based on a “theory reasoning” approach for efficiency reasons. This article addresse...
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1 School of EECS, Washington State University {burgun,cdyreson}@eecs.wsu.edu 2 Department of Computer Science, University of Arizona [email protected] 3 Department of Computer Science, University of Washington [email protected] 4 Microsoft Corporation, Redmond, WA, [email protected] 5 Amazon.com, Seattle, WA, [email protected] 6 Department of Computer Science, Aalborg University, csj@c...
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ژورنال
عنوان ژورنال: JAMA: The Journal of the American Medical Association
سال: 1899
ISSN: 0098-7484
DOI: 10.1001/jama.1899.02450780062024