Evidence Assessment in Refugee Law with Stories and Arguments:Special issue Methodologies for Research on Legal Argumentation

In this article, we aim to analyse whether a systematic meth- od for reasoning with evidence in legal cases – the hybrid theory of stories and arguments – can be ap- plied to a novel legal domain, name- ly European asylum law. This analy- sis serves as a case study for testing the applicability of the hybrid theory outside of the context of criminal law. Furthermore, the analysis will provide insights on how the hybrid theory can be used to improve the normative framework for evidence assessment in asylum cases

Estimating Stability for Efficient Argument-based Inquiry

We study the dynamic argumentation task of detecting stability: given a specific structured argumentation setting, can adding information change the acceptability status of some propositional formula? Detecting stability is not tractable for every input, but efficient computation is essential in practical applications. We present a sound approximation algorithm that recognises stability for many inputs in polynomial time and we discuss several of its properties. In particular, we show under which constraints on the input our algorithm is complete. The proposed algorithm is currently applied for fraud inquiry at the Dutch National Police - we provide an English demo version that also visualises the output of the algorithm