Nicola Leone

made the following comments:

Ad Q1.

Agrees with J.J. Alferes to some extent: One should definitely care about killer applications. ``But is there a single killer application?''

Ad Q2.

Connected to Q1. Agrees with J.J. Alferes that often ASP is used improperly. But there are many areas where it is well-suited: Complex knowledge, incomplete knowledge and reason about it.

One concrete case is the data integration setting presented in the systems track: Interaction with a database is needed, ``evolution" of a data has to be considered, reasoning by cases and solving a co-NP task is needed (so well-founded semantics is not appropriate), query answering is fundamental. Magic Set techniques make this task practical.

Another application area is reasoning about ontologies. Query answering over huge and complex amounts of data is necessary there.

Yet another area is the classification of documents (as presented in the system session before the panel), where constraint satisfaction is definitely not appropriate (since there is no query).

Ad Q3.

ASP should usually be used by knowledge engineers and be encapsulated in a ``computational kernel". Frontends should be built around this kernel in order to grant non-expert users easier access.

Ad Q5.

Agrees with J.J. Alferes. The need for debugging tools is emphasized. Other minor issues are raised (e.g., real numbers).