Representing and Integrating Multiple Calendars

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Date
1998-10-15Author
Kraus, Sarit
Sagiv, Yehoshua
Subrahmanian, V. S.
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Show full item recordAbstract
Whenever humans refer to time, they do so with respect to a
specific underlying calendar. So do most software applications.
However, most theoretical
models of time refer to time with respect to the integers (or reals).
Thus, there is a mismatch between the theory and the application of
temporal reasoning.
To lessen this gap, we propose a formal, theoretical definition of a
calendar and show how one may specify dates, time points, time
intervals, as well as sets of time points, in terms of constraints
with respect to a given calendar. Furthermore, when multiple
applications using different calendars wish to work together, there is
a need to integrate those calendars together into a single, unified
calendar. We show how this can be done.
(Also cross-referenced as UMIACS-TR-97-12)