August 30, 2012

Allen's hourglass

  • May 16, 2022 till May 16, 2022
  • Lecture Room "Aigaio"

Allen’s hourglass is motivated by the need to handle robustly the uncertainty of temporal intervals, e.g. as it occurs in automated event detection in video streams. We introduce a two-dimensional mapping of Allen’s relations, based on orthogonal characteristics of interval relations, namely relative position and relative size. The hourglass-shaped mapping also represents limit cases that correspond to durationless intervals. Based on this mapping, we define two sets of primitive interval relations in terms of the relative positioning and relative size of intervals. These primitives are then used to derive a probabilistic set of Allen’s relations. A number of example cases are presented to illustrate how the proposed approach can improve the robustness of interval relations.

Talk slides in pdf [~0,4MB]

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