| C. E. Dyreson, W. S. Evans, H. Lin, and R. T. Snodgrass, "Efficiently Supporting Temporal Granularities," IEEE Transactions on Knowledge and Data Engineering, Vol. 12, No. 4, pp. 568-587, 2000. |
....intersection, and the intersection of two granularities coincides with the infimum. The supremum does not coincide with union, however; the set of all granularities is not closed for union. The lattice of granularities is infinite. Other studies often assume a finite partial order of granularities (Dyreson et al. 1998), corresponding to real life calendars. Granspecs A granspec is an ordered pair of finite strings over the alphabet f ; t; og, the first string representing the offset, and the second the repeating pattern. Every granspec defines an infinite string. Formally, the relation between granspecs and ....
Dyreson, C. E.; Evans, W. S.; Lin, H.; and Snodgrass, R. T. 1998. Efficiently supporting temporal granularities.
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C. E. Dyreson, W. S. Evans, H. Lin, and R. T. Snodgrass, "Efficiently Supporting Temporal Granularities," IEEE Transactions on Knowledge and Data Engineering, Vol. 12, No. 4, pp. 568-587, 2000.
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