Resampling is an important signature of manipulated images. In this paper, we propose two
methods to detect and localize image manipulations based on a combination of resampling …

This paper addresses issues involved in applying the event-condition-action (ECA) rule
paradigm of active databases to policies-collections of general principles specifying the …

This paper introduces an abductive framework for updating knowledge bases represented
by extended disjunctive programs. We first provide a simple transformation from abductive …

The role of conceptual models, their formalization and implementation as knowledge bases,
and the related metadata and metamodel management, has continuously evolved since …

Integrating data and knowledge from multiple heterogeneous sources--like databases,
knowledge bases or specific software packages--is often required for answering certain …

During the process of updating a database, two interrelated problems could arise. On one
hand, when an update is applied to the database, integrity constraints could become …

Conversational systems like chatbots have emerged as powerful tools for automating
interactive tasks traditionally confined to human involvement. Fundamental to chatbot …

Monitoring public sentiment via social media is potentially helpful during health crises such
as the COVID-19 pandemic. However, traditional frequency-based and data-driven neural …

Active integrity constraints (AICs) constitute a formalism to associate with a database not just
the constraints it should adhere to, but also how to fix the database in case one or more of …

Abstract Ontology-based Data Access (OBDA) is gaining importance both scientifically and
practically. However, little attention has been paid so far to the problem of updating OBDA …