WorldCat Identities

Calvanese, Diego

Overview
Works: 29 works in 62 publications in 2 languages and 1,050 library holdings
Genres: Conference papers and proceedings 
Roles: Editor, Other, Author, Opponent
Publication Timeline
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Most widely held works by Diego Calvanese
Web reasoning and rule systems : second international conference, RR 2008, Karlsruhe, Germany, October 31 - November 1, 2008 ; proceedings by David Hutchison( Book )

15 editions published in 2008 in English and Undetermined and held by 62 WorldCat member libraries worldwide

This book constitutes the refereed proceedings of the Second International Conference on Web Reasoning and Rule Systems, RR 2008, held in Karlsruhe, Germany in October/November 2008. The 12 revised full papers, 4 revised short papers presented together with 5 poster papers were carefully reviewed and selected from over 35 submissions. The papers address all current topics in Web reasoning and rule systems such as acquisition of rules and ontologies by knowledge extraction, design and analysis of reasoning languages, implemented tools and systems, standardization, ontology usability, ontology languages and their relationships, rules and ontologies, reasoning with uncertainty, reasoning with constraints, rule languages and systems, semantic Web services modeling and applications
Digital libraries on the move : 11th Italian Research Conference on Digital Libraries, IRCDL 2015 : revised selected papers by IRCDL( Book )

8 editions published in 2016 in English and held by 10 WorldCat member libraries worldwide

This book constitutes the thoroughly refereed proceedings of the 11th Italian Research Conference on Digital Libraries, IRCDL 2015, held in Bozen-Bolzano, Italy, in January 2015. The 13 full papers, 4 short papers and 2 invited poster papers presented were carefully selected from 19 submissions. They are organized under the following five categories: semantic modeling; projects; models and applications; content analysis; and digital libraries infrastructures. The papers deal with numerous multidisciplinary aspects ranging from computer science to humanities in the broader sense, including research areas such as archival and library information sciences; information management systems; semantic technologies; information retrieval; new knowledge environments; new organizational/business models
Complementi ed esercizi di programmazione in pascal by Diego Calvanese( Book )

3 editions published between 1998 and 1999 in Italian and held by 6 WorldCat member libraries worldwide

Lezioni di tecniche di programmazione( Book )

3 editions published between 2004 and 2006 in Italian and held by 5 WorldCat member libraries worldwide

Programmazione con strutture dati in C( Book )

1 edition published in 2001 in Italian and held by 4 WorldCat member libraries worldwide

Proceedings of the 20th International workshop on description logics : DL'07 : June 8-10, 2007 : Free University of Bozen-Bolzano, Brixen/Bressanone, Italy by International Workshop on Description Logics( Book )

2 editions published in 2007 in English and held by 3 WorldCat member libraries worldwide

Lezioni di fondamenti di informatica( Book )

1 edition published in 2003 in Italian and held by 2 WorldCat member libraries worldwide

Lezioni di fondamenti di informatica( Book )

1 edition published in 2003 in Italian and held by 2 WorldCat member libraries worldwide

Representing and reasoning on SGML documents by Diego Calvanese( )

1 edition published in 1997 in English and held by 1 WorldCat member library worldwide

On the Expressive Power of Data Integration Systems( )

1 edition published in 2002 in Undetermined and held by 1 WorldCat member library worldwide

Reasoning web : logical foundation of knowledge graph construction and query answering : 12th international summer school 2016, Aberdeen, UK, September 5-9, 2016 : tutorial lectures by Reasoning Web Summer School( Book )

4 editions published in 2017 in English and held by 1 WorldCat member library worldwide

This volume contains some lecture notes of the 12th Reasoning Web Summer School (RW 2016), held in Aberdeen, UK, in September 2016. In 2016, the theme of the school was "Logical Foundation of Knowledge Graph Construction and Query Answering". The notion of knowledge graph has become popular since Google started to use it to improve its search engine in 2012. Inspired by the success of Google, knowledge graphs are gaining momentum in the World Wide Web arena. Recent years have witnessed increasing industrial take-ups by other Internet giants, including Facebook's Open Graph and Microsoft's Satori. The aim of the lecture note is to provide a logical foundation for constructing and querying knowledge graphs. Our journey starts from the introduction of Knowledge Graph as well as its history, and the construction of knowledge graphs by considering both explicit and implicit author intentions. The book will then cover various topics, including how to revise and reuse ontologies (schema of knowledge graphs) in a safe way, how to combine navigational queries with basic pattern matching queries for knowledge graph, how to setup a environment to do experiments on knowledge graphs, how to deal with inconsistencies and fuzziness in ontologies and knowledge graphs, and how to combine machine learning and machine reasoning for knowledge graphs
Reasoning in Expressive Description Logics with Fixpoints based on Automata on Infinite Trees( )

1 edition published in 1999 in Undetermined and held by 1 WorldCat member library worldwide

Identification Constraints and Functional Dependencies in Description Logics( )

1 edition published in 2001 in Undetermined and held by 1 WorldCat member library worldwide

Répondre efficacement aux requêtes Big Data en présence de contraintes by Damián Bursztyn( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Constraints are the essential artefact for giving meaning to data, ensuring that it fits real-life application needs, and that its meaning is correctly conveyed to the users. This thesis investigates two fundamental problems related to the efficient management of data in the presence of constraints. We address the problem of efficiently answering queries over data in the presence of deductive constraints, which lead to implicit data that is entailed (derived) from the explicit data and the constraints. Implicit data requires a reasoning step in order to compute complete query answers, and two main query answering techniques exist. Data saturation compiles the constraints into the database by making all implicit data explicit, while query reformulation compiles the constraints into a modified query, which, evaluated over the explicit data only, computes all the answer due to explicit and/or implicit data. So far, reformulation-based query answering has received significantly less attention than saturation. In particular, reformulated queries may be complex, thus their evaluation may be very challenging. We study optimizing reformulation-based query answering in the setting of ontology-based data access, where SPARQL conjunctive queries are answered against a set of RDF facts on which constraints hold. When RDF Schema is used to express the constraints, the thesis makes the following contributions. (i) We generalize prior query reformulation languages, leading to a space of reformulated queries we call JUCQs (joins of unions of conjunctive queries), instead of a single fixed reformulation. (ii) We present effective and efficient cost-based algorithms for selecting from this space, a reformulated query with the lowest estimated cost. (iii) We demonstrate through experiments that our technique drastically improves the performance of reformulation-based query answering while always avoiding "worst-case" performance. Moving beyond RDFS, we consider the large and useful set of ontology languages enjoying FOL reducibility of query answering: answering a query can be reduced to evaluating a certain first-order logic (FOL) formula (obtained from the query and ontology) against only the explicit facts. (iv) We generalize the above-mentioned JUCQ-based optimized reformulation technique to improve performance in any FOL-reducible setting, and (v) we instantiate this framework to the DL-LiteR Description Logic underpinning the W3C's OWL2 QL ontology language, demonstrating significant performance advantages in this setting also. We also report on current work regarding the problem of providing efficient data access paths in Big Data stores. We consider a setting where a set of different, heterogeneous storage systems can be used side by side to provide better performance than any of them used individually. In such a setting, the data stored in each system can be described as views over the application data. Answering a query thus amounts to rewrite the query using the available views, and then to decode the rewriting into a set of queries to be executed on the systems holding the views, and a query combining them appropriately
Introduzione alla programmazione in Java( Book )

1 edition published in 2003 in Italian and held by 1 WorldCat member library worldwide

 
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Web reasoning and rule systems : second international conference, RR 2008, Karlsruhe, Germany, October 31 - November 1, 2008 ; proceedings
Languages
English (32)

Italian (10)

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