We consider the problem of automatically recognizing human faces from frontal views with
varying expression and illumination, as well as occlusion and disguise. We cast the …

The first step towards an autonomous database management system (DBMS) is the ability to
model the target application's workload. This is necessary to allow the system to anticipate …

This handbook provides an up-to-date compendium of fundamental computer science
topics, techniques, and applications. Along with updating and revising many of the existing …

Deciding query equivalence is an important problem in data management with many
practical applications. Solving the problem, however, is not an easy task. While there has …

Every database system contains a query optimizer that performs query rewrites.
Unfortunately, developing query optimizers remains a highly challenging task. Part of the …

Deciding the equivalence of SQL queries is a fundamental problem in data management. As
prior work has mainly focused on studying the theoretical limitations of the problem, very few …

Database-as-a-service offerings enable users to quickly create and deploy complex data
processing pipelines. In practice, these pipelines often exhibit significant overlap of …

We study containment and equivalence of (unions of) conjunctive queries on relations
annotated with elements of a commutative semiring. Such relations and the semantics of …

Proving the equivalence between SQL queries is a fundamental problem in database
research. Existing solvers model queries using algebraic representations and convert such …

Data exchange is the problem of finding an instance of a target schema, given an instance of
a source schema and a specification of the relationship between the source and the target …