Explaining query answers in prioritized databases

Supervisor: Loan Ho (t.t.l.ho@vu.nl)


Explanation for query answers in databases has paid attention recently when dealing with inconsistent databases. In particular, we consider universal constraints, for example, in a hospital setting, a universal constraint can be used to capture expert knowledge that a patient cannot receive a certain treatment without a positive test for a given mutation, with violations indicating either an erroneous treatment record or missing test result. In this case, finding the root causes for this inconsistency is a challenge during query answering.


In this project, we will use logic-based argumentation to provide explanations of how the query answer was reached.


Supervision will be by Loan Ho and Stefan Schlobach.