Scalable Uncertainty Management
7th International Conference, SUM 2013, Washington, DC, USA, September 16-18, 2013. Proceedings
Chapter and Conference Paper
This paper deals with the problem of repairing inconsistent relational database instances in which facts are associated with nonnegative weights, representing their quality or trustfulness. Given a numeric agg...
Article
We study the complexity of consistent query answering on databases that may violate primary key constraints. A repair of such a database is any consistent database that can be obtained by deleting a minimal se...
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Chapter and Conference Paper
Consistent Query Answering (CQA) has by now been widely adopted as a principled approach for answering queries on inconsistent databases. The consistent answer to a query q on an inconsistent database ...
Chapter and Conference Paper
This paper adopts a very elementary representation of uncertainty. A relational database is called uncertain if it can violate primary key constraints. A repair of an uncertain database is obtained by selectin...
Book and Conference Proceedings
7th International Conference, SUM 2013, Washington, DC, USA, September 16-18, 2013. Proceedings
Chapter and Conference Paper
An uncertain database db is defined as a database in which distinct tuples of the same relation can agree on their primary key. A repair (or possible world) of db is then obtained by selecting a maximal number of...
Chapter and Conference Paper
Uncertainty is modeled by a multibase (db,μ) where db is a database with zero or more primary key violations, and μ associates a multiplicity (a positive integer) to each fact of db. In data integration, the mult...
Reference Work Entry In depth
Reference Work Entry In depth
Chapter and Conference Paper
This article deals with the computation of consistent answers to queries on relational databases that violate primary key constraints. A repair of such inconsistent database is obtained by selecting a maximal ...
Book and Conference Proceedings
EDBT 2006 Workshops PhD, DataX, IIDB, IIHA, ICSNW, QLQP, PIM, PaRMA, and Reactivity on the Web, Munich, Germany, March 26-31, 2006, Revised Selected Papers
Chapter and Conference Paper
Consistent query answering is the term commonly used for the problem of answering queries on databases that violate certain integrity constraints. We address this problem for universal re...
Chapter and Conference Paper
Repairing a database means making the database consistent by applying changes that are as small as possible. Nearly all approaches to repairing have assumed deletions and insertions of entire tuples as basic r...
Chapter
Data mining focuses on the development of methods and algorithms for such tasks as classification, clustering, rule induction, and discovery of associations. In the database field, the view of data mining as a...
Chapter and Conference Paper
Repairing a database means bringing the database in accordance with a given set of integrity constraints by applying modifications that are as small as possible. In the seminal work of Arenas et al. on query a...
Chapter and Conference Paper
We present a simple Data Mining Logic (DML) that can express common data mining tasks, like “Find Boolean association rules” or “Find inclusion dependencies.” At the center of the paper is the problem of chara...