We study the data complexity of consistent query answering (CQA) on databases that may
violate the primary key constraints. A repair is a maximal subset of the database satisfying …

The problem of consistent query answering for primary keys and self-join-free conjunctive
queries has been intensively studied in recent years and is by now well understood. In this …

We consider the problem of answering conjunctive queries with aggregation on database
instances that may violate primary key constraints. In SQL, these queries follow the SELECT …

The ability to perform advanced data analytics efficiently is becoming increasingly important
for a wide spectrum of data-driven applications in the big data era. The efficiency of data …

We study the certifiable robustness of ML classifiers on dirty datasets that could contain
missing values. A test point is certifiably robust for an ML classifier if the classifier returns the …

Most data analytical pipelines often encounter the problem of querying inconsistent data that
could violate pre-determined integrity constraints. Data cleaning is an extensively studied …