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Bipolarity in temporal argumentation frameworks
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DOI：10.1016/j.ijar.2017.01.013.png)
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Abstract
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A Timed Argumentation Framework (TAF) is a formalism where arguments are only valid for consideration during specific intervals of time, called availability intervals, which are defined for every individual argument. The original proposal is based on a single abstract notion of attack between arguments that remains static and permanent in time. Thus, in general, when identifying the set of acceptable arguments, the outcome associated with a TAF will vary over time. Here, we are introducing an extension of TAF adding the capability of modeling a support relation between arguments. In this sense, the resulting framework provides a suitable model for different time-dependent issues; thus, the main contribution of this work is to provide an enhanced framework for modeling a positive (support) and negative (attack) interaction which varies over time, features that are highly relevant in many real-world situations. This addition leads to a Timed Bipolar Argumentation Framework (T-BAF), where classical argument extensions can be defined, aiming at advancing in the integration of temporal argumentation in different application domains. (C) 2017 Elsevier Inc. All rights reserved.
Keywords:
Human-like reasoning
Temporal argumentation
Dynamic argumentation models
Timed interval-based semantics
Bipolarity
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