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Agile Controllability of Simple Temporal Networks with Uncertainty and Oracles

Authors Johann Eder , Roberto Posenato , Carlo Combi , Marco Franceschetti , Franziska S. Hollauf

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LIPIcs.TIME.2024.4.pdf
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Subject Classification

ACM Subject Classification
  • Computing methodologies → Temporal reasoning
  • Theory of computation → Dynamic graph algorithms
Keywords
  • Temporal constraint networks
  • contingent durations
  • agile controllability

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Abstract

Simple temporal networks with uncertainty (STNUs) have achieved wide attention and are the basis of many applications requiring the representation of temporal constraints and checking whether they are conflicting. Dynamic controllability is currently the most relaxed notion to check whether a system can be controlled without violating temporal constraints despite uncertainties. However, dynamic controllability assumes that the actual duration of a contingent activity is only known when the end event of this activity takes place. The recently introduced notion of agile controllability considers when this duration is known earlier, leading to a more relaxed notion of temporal feasibility. We extend the definition of STNUs to STNUOs (Simple Temporal Networks with Uncertainty and Oracles) to represent the point in time at which information about a contingent duration is available. We formally define agile controllability as a generalization of dynamic controllability considering the timepoints of information availability. We propose a set of constraint propagation rules for STNUOs leading to an algorithm for checking agile controllability.

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Johann Eder, Roberto Posenato, Carlo Combi, Marco Franceschetti, and Franziska S. Hollauf. Agile Controllability of Simple Temporal Networks with Uncertainty and Oracles. In 31st International Symposium on Temporal Representation and Reasoning (TIME 2024). Leibniz International Proceedings in Informatics (LIPIcs), Volume 318, pp. 4:1-4:16, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024) https://doi.org/10.4230/LIPIcs.TIME.2024.4

Author Details

Johann Eder
  • University of Klagenfurt, Austria
Roberto Posenato
  • University of Verona, Italy
Carlo Combi
  • University of Verona, Italy
Marco Franceschetti
  • University of St. Gallen, Switzerland
Franziska S. Hollauf
  • University of Klagenfurt, Austria

Supplementary Materials

References

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