Hunter, A;
Potyka, N;
Polberg, S;
(2019)
Delegated Updates in Epistemic Graphs for Opponent Modelling.
International Journal of Approximate Reasoning
, 113
pp. 207-244.
10.1016/j.ijar.2019.07.006.
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Abstract
In an epistemic graph, belief in arguments is represented by probability distributions. Furthermore, the influence that belief in arguments can have on the belief in other arguments is represented by constraints on the probability distributions. Different agents may choose different constraints to describe their reasoning, thus making epistemic graphs extremely flexible tools. A key application for epistemic graphs is modelling participants in persuasion dialogues, with the aim of modelling the change in beliefs as each move in the dialogue is made. This requires mechanisms for updating the model throughout the dialogue. In this paper, we introduce the class of delegated update methods, which harness existing, simpler update methods in order to produce more realistic outputs. In particular, we focus on hypothesized updates, which capture agent’s reluctance or susceptibility to belief updates that can be caused by certain factors, such as time of the day, fatigue, dialogue length, and more. We provide a comprehensive range of options for modelling different kinds of agents and we explore a range of properties for categorising the options.
| Type: | Article |
|---|---|
| Title: | Delegated Updates in Epistemic Graphs for Opponent Modelling |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.ijar.2019.07.006 |
| Publisher version: | https://doi.org/10.1016/j.ijar.2019.07.006 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | probabilistic argumentation, epistemic argumentation, epistemic updates |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10078591 |
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