An Interval Algebra for Indeterminate Time

Temporal indeterminacy is an inherent problem which arises when capturing and manipulating temporal data in many application areas. As such, representation and manipulation of timestamps with indeterminacy is a requirement for these applications. We present an extension of Allen’s thirteen interval relationships to indeterminate temporal intervals based on a novel representation for indeterminate timestamps. The timestamps can be derived from and translated to interval constraints. We provide a set of simple and useful operators for manipulating both convex and non-convex indeterminate intervals represented by these timestamps.

Authors

• Wes Cowley University of South Florida; Dimitris Plexousakis

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