Abduction and Dialogical Proof in Argumentation and Logic Programming
  We develop a model of abduction in abstract argumentation, where changes to an argumentation framework act as hypotheses to explain the support of an observation. We present dialogical proof theories for the main decision problems (i.e., finding hypothe- ses that explain skeptical/credulous support) and we show that our model can be instantiated on the basis of abductive logic programs. 
Richard Booth, Dov Gabbay, Souhila Kaci, Tjitze Rienstra, Leendert van   der Torre
cs.AI cs.LO