6. AMW 2012: Ouro Preto, Brazil
Juliana Freire, Dan Suciu (Eds.): Proceedings of the 6th Alberto Mendelzon International Workshop on Foundations of Data Management, Ouro Preto, Brazil, June 27-30, 2012. CEUR-WS.org 2012 CEUR Workshop Proceedings 866
Keynotes
Divesh Srivastava: In Search of Truth (on the Deep Web). 1
Marco A. Casanova, Karin Koogan Breitman, Antonio L. Furtado, Vânia Maria Ponte Vidal, José Antônio Fernandes de Macêdo, Eveline R. Sacramento: Constraint Reuse in DL-Lite Core with Arbitrary Number Restrictions. 2-11
Maurizio Lenzerini: Ontology-Based Data Management. 12-15
Berthier A. Ribeiro-Neto: Web Search - Challenges and Opportunities. 16-17
Tutorials
Altigran Soares da Silva, Eli Cortez: Methods and Techniques for Information Extraction by Text Segmentation. 18
Jorge Pérez: Semantic Web Research Inspired by W3C Standards, or the Hell of the Practice without Theory. 19
Web Databases

Aline Bessa, Alberto H. F. Laender, Adriano Veloso, Nivio Ziviani: Alleviating the Sparsity Problem in Recommender Systems by Exploring Underlying User Communities. 35-47
Ontologies and RDF

Bernardo Cuenca Grau, Evgeny Kharlamov, Dmitriy Zheleznyakov: Ontology Contraction: Beyond the Propositional Paradise. 62-74
Query Processing 1
Pablo Barceló, Leonid Libkin, Miguel Romero: On Low Treewidth Approximations of Conjunctive Queries. 91-101
Pablo Bisceglia, Leticia I. Gómez, Alejandro A. Vaisman: Temporal SOLAP: Query Language, Implementation, and a Use Case. 102-113
Schema and View Management
Jorge Pérez, Reinhard Pichler, Emanuel Sallinger, Vadim Savenkov: Union and Intersection of Schema Mappings. 129-141

Query Processing 2

Pablo Barceló, Jorge Pérez, Juan L. Reutter: Relative Expressiveness of Nested Regular Expressions. 180-195
Aida Malaki, Leopoldo E. Bertossi, Flavio Rizzolo: Multidimensional Contexts for Data Quality Assessment. 196-209
Poster Papers
Ramon G. Costa, Fabio Porto, Bruno Schulze: Towards Analytical Data Management for Numerical Simulations. 210-214
Bruno F. F. Souza, Maria da Conceição Moraes Batista, Ana Carolina Salgado: Semantic Loss in Query Reformulation in Dynamic Distributed Environments. 220-224
Crishane Freire, Damires Souza, Bernadette Farias Lóscio, Ana Carolina Salgado: Enriching Query Routing Processes in PDMS with Semantic Information and Information Quality. 225-229
Michele A. Brandão, Mirella M. Moro: Affiliation Influence on Recommendation in Academic Social Networks. 230-234



