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  1. Article

    Open Access

    Decision-making under uncertainty: be aware of your priorities

    Self-adaptive systems (SASs) are increasingly leveraging autonomy in their decision-making to manage uncertainty in their operating environments. A key problem with SASs is ensuring their requirements remain s...

    Huma Samin, Nelly Bencomo, Peter Sawyer in Software and Systems Modeling (2022)

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  2. No Access

    Chapter and Conference Paper

    A Flexible Approach for Instance Adaptation During Class Versioning

    One of the consequences of evolution can be the inability to access objects created using the older schema definition under the new definition and vice versa. Instance adaptation is the conversion of objects t...

    Awais Rashid, Peter Sawyer, Elke Pulvermueller in Objects and Databases (2001)

  3. No Access

    Chapter and Conference Paper

    Dynamic Relationships in Object Oriented Databases: A Uniform Approach

    In this paper we present a uniform approach to dynamic relationships in object oriented databases. We present our relationship categorisation based on dividing the object database into three virtual spaces each h...

    Awais Rashid, Peter Sawyer in Database and Expert Systems Applications (1999)

  4. No Access

    Chapter and Conference Paper

    Facilitating virtual representation of CAD data through a learning based approach to conceptual database evolution employing direct instance sharing

    This paper presents a framework for a learning based approach to dynamically evolve the conceptual structure of a database in order to facilitate virtual representation of data in a CAD environment. A generic ...

    Awais Rashid, Peter Sawyer in Database and Expert Systems Applications (1998)