“Bob murdered Alice” and “Bob did not murder Alice” are two arguments.

Adding a third argument--“It is well-known that Bob loved Alice and a man who loves a woman cannot murder her”--changes the argumentation as the last argument attacks the first. Such an argumentation can be represented by an argumentation graph. In this paper, the authors present a framework called YALLA for handling the dynamics of an argumentation graph. The framework can express argumentation graphs for each agent and for the state of the dialogue.

The paper is clearly written for the specialist in the field of argumentation. Although the authors try to recall the needed prerequisites, the explanation is so brief that it is hard to follow.

The acceptability semantics is recalled, but with neither any explanation of the motivation of the definitions nor any example. In the presentation of the YALLA framework, a few explanations on the motivation would have made it easier to grasp for the nonexpert reader. There is also no discussion of any applications of the framework.

The topic is interesting; however, a reader not familiar with the area might want to start with some earlier papers on the topic.