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Process Modelling

Our paper on understanding the ADL of older adults has been published by IEEE Sensors

    Our paper describing “A Personalised Formal Verification Framework for Monitoring Activities of Daily Living of Older Adults Living Independently in Their Homes” has been published by the journal  IEEE Sensors. This describes a novel approach and framework integrating symbolic modelling and data from sensors for understanding the Activities of Daily Living (ADLs) of older adults living independently in their homes in Edinburgh and its neighbourhood.

    The work is part of the Integrated Technologies of Care workpackage of the Advanced Care Research Centre (ACRC).

    Abstract:

    There is an urgent need to provide quality-of-life to a growing population of older adults living independently. Solutions that focus on the person and take into account their preferences and context are recognised as key. We introduce a framework for representing and reasoning about the Activities of Daily Living of older adults living independently at home. The framework integrates data from sensors and data from participants derived from semi-structured interviews, home layouts and additional contextual information, such as the researchers’ observations. These data are used to create formal models, personalised for each participant according to their preferences and context. Requirements specific to each individual are formulated and encoded in Linear Temporal Logic, and a model checker is used to verify whether each is satisfied by the model of the participant’s behaviour. We demonstrate the framework’s generalisability by applying it to two different participants, highlighting its potential to enhance the safety and well-being of older adults ageing in place.
    Print ISSN: 1530-437X
    Online ISSN: 1558-1748
    DOI: 10.1109/JSEN.2025.3635781
    More information available here.

    Our formalisation of Linear Resources and Process Compositions has been published in the Archive of Formal Proof

      Abstract

      In this entry we formalise a framework for process composition based on actions that are specified by their input and output resources. We verify their correctness by translating compositions of process into deductions of intuitionistic linear logic. As part of the verification we derive simple conditions on the compositions which ensure well-formedness of the corresponding deduction.

      We describe an earlier version of this formalisation in our article Linear Resources in Isabelle/HOL, which also includes a formalisation of manufacturing processes in the simulation game Factorio.

      Proter open source software released

        Proter is an open-source discrete event simulation library for workflows, written in Scala. It is now available on GitHub and as a library on Maven Central under the Apache 2.0 license.

        Proter was initially developed for the simulation of logic-based workflows in WorkflowFM in the context of the DigiFlow project. It was then gradually separated into an independent project for general purpose process simulation. We are currently extending its capabilities to support BPMN models and other modern features.