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Displaying 1-50 out of 51 total
Building a Database Design Laboratory on the Internet
Found in: IEEE Internet Computing
By Stefano Ceri, Piero Fraternali, Stefano Gevinti, Stefano Paraboschi
Issue Date:September 1998
pp. 41-48
<p>Web Lab offers Internet access to a unique development environment for database applications. It disseminates research project results efficiently and also demonstrates the feasibility of selling development technologies as services rather than to...
 
Compile-Time and Runtime Analysis of Active Behaviors
Found in: IEEE Transactions on Knowledge and Data Engineering
By Elena Baralis, Stefano Ceri, Stefano Paraboschi
Issue Date:May 1998
pp. 353-370
<p><b>Abstract</b>—Active rules may interact in complex and sometimes unpredictable ways, thus possibly yielding infinite rule executions by triggering each other indefinitely. This paper presents analysis techniques focused on detecting ...
 
Algres: An Advanced Database System for Complex Applications
Found in: IEEE Software
By Stefano Ceri, Stefano Crespi-Reghizzi, Roberto Zicari, Gianfranco Lamperti, Luigi A. Lavazza
Issue Date:July 1990
pp. 68-78
<p>A description is given of Algres, a programming environment that extends the relational model to handle complex objects and operations and integrates the logic programming paradigm. Algres is designed to be used to develop knowledge bases, softwar...
 
It's a Streaming World! Reasoning upon Rapidly Changing Information
Found in: IEEE Intelligent Systems
By Emanuele Della Valle, Stefano Ceri, Frank van Harmelen, Dieter Fensel
Issue Date:November 2009
pp. 83-89
<p>Data streams occur in modern applications such as sensor network monitoring, traffic engineering, RFID tags applications, telecom call recording, medical record management, financial applications, and clickstreams. On the Web, many sites distribut...
 
Search Computing
Found in: Web Intelligence and Intelligent Agent Technology, IEEE/WIC/ACM International Conference on
By Stefano Ceri
Issue Date:September 2009
pp. 1
“Who are the strongest European competitors on software ideas? Who is the best doctor to cure insomnia in a nearby hospital? Where can I attend an interesting conference in my field closest to a sunny beach?
 
Search Computing
Found in: Web Intelligence and Intelligent Agent Technology, IEEE/WIC/ACM International Conference on
By Stefano Ceri
Issue Date:September 2009
pp. 1
“Who are the strongest European competitors on software ideas? Who is the best doctor to cure insomnia in a nearby hospital? Where can I attend an interesting conference in my field closest to a sunny beach?
 
A Framework for Integrating, Exploring, and Searching Location-Based Web Data
Found in: IEEE Internet Computing
By Alessandro Bozzon,Marco Brambilla,Stefano Ceri,Silvia Quarteroni
Issue Date:November 2011
pp. 24-31
This article presents the adaptation of a general search computing framework for exploratory search over Web data as suggested by the specificity of location-based data services. The result is a conceptual model of geographic entities, the spatial function...
 
Deductive and Inductive Stream Reasoning for Semantic Social Media Analytics
Found in: IEEE Intelligent Systems
By Davide Barbieri,Daniele Braga,Stefano Ceri,Emanuele Della Valle,Yi Huang,Volker Tresp,Achim Rettinger,Hendrik Wermser
Issue Date:November 2010
pp. 32-41
A combined approach of deductive and inductive reasoning can leverage the clear separation between the evolving (streaming) and static parts of online knowledge at conceptual and technological levels.
 
Search Computing: Managing Complex Search Queries
Found in: IEEE Internet Computing
By Stefano Ceri, Adnan Abid, Mamoun Abu Helou, Davide Barbieri, Alessandro Bozzon, Daniele Braga, Marco Brambilla, Alessandro Campi, Francesco Corcoglioniti, Emanuele Della Valle, Davide Eynard, Piero Fraternali, Michael Grossniklaus, Davide Martinenghi, Stef
Issue Date:November 2010
pp. 14-22
Search computing focuses on building answers to complex search queries (for example,
 
Search Computing
Found in: Data Engineering, International Conference on
By Stefano Ceri
Issue Date:April 2009
pp. 1-3
“Who are the strongest European competitors on software ideas? Who is the best doctor to cure insomnia in a nearby hospital? Where can I attend an interesting conference in my field close to a sunny beach?” This information is available on the Web, but no ...
 
Providing Flexible Process Support to Project-Centered Learning
Found in: IEEE Transactions on Knowledge and Data Engineering
By Stefano Ceri, Florian Daniel, Maristella Matera, Alessandro Raffio
Issue Date:June 2009
pp. 894-909
While business process definition is becoming more and more popular as an instrument for describing human activities, there is a growing need for software tools supporting business process abstractions to help users organize and monitor their desktop work....
 
Clip: a Visual Language for Explicit Schema Mappings
Found in: Data Engineering, International Conference on
By Alessandro Raffio, Daniele Braga, Stefano Ceri, Paolo Papotti, Mauricio A. Hernandez
Issue Date:April 2008
pp. 30-39
Many data integration solutions in the market today include tools for schema mapping, to help users visually relate elements of different schemas. Schema elements are connected with lines, which are interpreted as mappings, i.e. high-level logical expressi...
 
WebML and Glue: An Integrated Discovery Approach for the SWS Challenge
Found in: Web Intelligence and Intelligent Agent Technology, International Conference on
By Marco Brambilla, Stefano Ceri, Federico Facca, Christina Tziviskou, Irene Celino, Dario Cerizza, Emanuele Della Valle, Andrea Turati
Issue Date:November 2007
pp. 148-151
In this paper we describe the improvements on our approach to the old discovery scenario of the SWS Challenge and our current solution for the new discovery and composition scenario. The mediation scenario is not included in this paper since there were no ...
 
Managing Asynchronous Web Services Interactions
Found in: Web Services, IEEE International Conference on
By Marco Brambilla, Stefano Ceri, Mario Passamani, Alberto Riccio
Issue Date:June 2004
pp. 80
Asynchronous interactions are becoming more and more important in the implementation of complex B2B Web applications. This paper addresses correlation and coordination issues involved with asynchronous Web services, by studying different mechanisms and met...
 
A Tool for Extracting XML Association Rules
Found in: Tools with Artificial Intelligence, IEEE International Conference on
By Daniele Braga, Alessandro Campi, Stefano Ceri, Mika Klemettinen, Pier Luca Lanzi
Issue Date:November 2002
pp. 57
The recent success of XML as a standard to represent semi-structured data, and the increasing amount of available XML data, pose new challenges to the data mining community. In this paper we present the X MINE operator a tool we developed to extract XML as...
 
Conceptual Modeling of Data-Intensive Web Applications
Found in: IEEE Internet Computing
By Stefano Ceri, Piero Fraternali, Maristella Matera
Issue Date:July 2002
pp. 20-30
<p>Breaking Web applications into
 
Models and Tools for Designing Data-Intensive WEB Applications
Found in: Cooperative Information Systems, IFCIS International Conference on
By Stefano Ceri
Issue Date:September 1999
pp. 3
Data-intensive WEB applications, whose pages are automatically generated from large data sources, are becoming more and more relevant. Their design requires orthogonal abstractions, for the definition of the structure, derivation, navigation, composition, ...
 
Expert Design of Local Area Networks
Found in: IEEE Intelligent Systems
By Stefano Ceri, Letizia Tanca
Issue Date:October 1990
pp. 23-33
<p>The Expert LAN Designer (ELAND) is described. It is a rule-based expert system for configuring distributed information systems operating on a LAN. A general overview of the system and the motivations for major design choices is presented, and the ...
 
Integrative warehousing of biomolecular information to support complex multi-topic queries for biomedical knowledge discovery
Found in: 2013 IEEE 13th International Conference on Bioinformatics and Bioengineering (BIBE)
By Arif Canakoglu,Marco Masseroli,Stefano Ceri,Luca Tettamanti,Giorgio Ghisalberti,Alessandro Campi
Issue Date:November 2013
pp. 1-4
Biomedical questions are often complex and address multiple topics simultaneously. Answering them requires the comprehensive evaluation of several different types of data. They are often available, but in distributed and heterogeneous data sources; this ha...
   
Active XQuery
Found in: Data Engineering, International Conference on
By Angela Bonifati, Daniele Braga, Alessandro Campi, Stefano Ceri
Issue Date:March 2002
pp. 0403
Besides being adopted as the new interchange format for the Internet, XML is finding increasing acceptance as a native data repository language. In order to make XML repositories fully equipped with data management capabilities, suitable query and update l...
 
Pushing reactive services to XML repositories using active rules
Found in: Proceedings of the tenth international conference on World Wide Web (WWW '01)
By Angela Bonifati, Stefano Ceri, Stefano Paraboschi
Issue Date:May 2001
pp. 633-641
This paper describes the challenges faced by designers in creating accessible systems for the elderly. CARSE, an assessment tool, which has been synthesized and empirically validated of the semantic efficacy of interface metaphor, is used to evaluate two s...
     
The IDEA Web lab
Found in: Proceedings of the 1998 ACM SIGMOD international conference on Management of data (SIGMOD '98)
By Piero Fraternali, Stefano Ceri, Stefano Paraboschi
Issue Date:June 1998
pp. 227-234
With the spreading of the World Wide Web as a uniform and ubiquitous interface to computer applications and information, novel opportunities are offered for introducing significant changes in all organizations and their processes. This demo presents the ID...
     
The Algres testbed of CHIMERA: an active object-oriented database system
Found in: Proceedings of the 1995 ACM SIGMOD international conference on Management of data (SIGMOD '95)
By Giuseppe Psaila, Piero Fraternali, Stefano Ceri, Stefano Paraboschi
Issue Date:May 1995
pp. 219-230
DataMine is a statistical database mining system with strong emphasis on interactiveness and nice graphical representation of information produced. It also supports an offline mode of discovery, and provides an extensive API which allows users to write "mi...
     
Specification and implementation of exceptions in workflow management systems
Found in: ACM Transactions on Database Systems (TODS)
By Fabio Casati, Guiseppe Pozzi, Stefano Ceri, Stefano Paraboschi
Issue Date:March 1988
pp. 405-451
Although workflow management systems are most applicable when an organization follows standard business processes and routines, any of these processes faces the need for handling exceptions, i.e., asynchronous and anomalous situations that fall outside the...
     
Automatic generation of production rules for integrity maintenance
Found in: ACM Transactions on Database Systems (TODS)
By Letizia Tanca, Piero Fraternali, Stefano Ceri, Stefano Paraboschi
Issue Date:March 1988
pp. 367-422
In this article we present an approach to integrity maintenance, consisting of automatically generating production rules for integrity enforcement. Constraints are expressed as particular formulas of Domain Relational Calculus; they are automatically trans...
     
Modularization techniques for active rules design
Found in: ACM Transactions on Database Systems (TODS)
By Elena Baralis, Stefano Ceri, Stefano Paraboschi
Issue Date:March 1988
pp. 1-29
Active database systems can be used to establish and enforce data management policies. A large amount of the semantics that normally needs to be coded in application programs can be abstracted and assigned to active rules. This trend is sometimes called &#...
     
A bottom-up, knowledge-aware approach to integrating and querying web data services
Found in: ACM Transactions on the Web (TWEB)
By Marco Brambilla, Silvia Quarteroni, Stefano Ceri
Issue Date:October 2013
pp. 1-33
As a wealth of data services is becoming available on the Web, building and querying Web applications that effectively integrate their content is increasingly important. However, schema integration and ontology matching with the aim of registering data ser...
     
Choosing the right crowd: expert finding in social networks
Found in: Proceedings of the 16th International Conference on Extending Database Technology (EDBT '13)
By Alessandro Bozzon, Giuliano Vesci, Marco Brambilla, Matteo Silvestri, Stefano Ceri
Issue Date:March 2013
pp. 637-648
Expert selection is an important aspect of many Web applications, e.g., when they aim at matching contents, tasks or advertisement based on user profiles, possibly retrieved from social networks. This paper focuses on selecting experts within the populatio...
     
Answering search queries with CrowdSearcher
Found in: Proceedings of the 21st international conference on World Wide Web (WWW '12)
By Alessandro Bozzon, Marco Brambilla, Stefano Ceri
Issue Date:April 2012
pp. 1009-1018
Web users are increasingly relying on social interaction to complete and validate the results of their search activities. While search systems are superior machines to get world-wide information, the opinions collected within friends and expert/local commu...
     
Search computing: multi-domain search on ranked data
Found in: Proceedings of the 2011 international conference on Management of data (SIGMOD '11)
By Alessandro Bozzon, Daniele Braga, Francesco Corcoglioniti, Marco Brambilla, Piero Fraternali, Salvatore Vadacca, Stefano Ceri
Issue Date:June 2011
pp. 1267-1270
We demonstrate the Search Computing framework for multi-domain queries upon ranked data collected from Web sources. Search Computing answers to queries like "Find a good Jazz concert close to a specified location, a good restaurant and a hotel at walking d...
     
Exploratory search in multi-domain information spaces with liquid query
Found in: Proceedings of the 20th international conference companion on World wide web (WWW '11)
By Alessandro Bozzon, Marco Brambilla, Piero Fraternali, Salvatore Vadacca, Stefano Ceri
Issue Date:March 2011
pp. 189-192
Search Computing (SeCo) aims at building search applications that bridge the gap between general-purpose and vertical search engines. SeCo queries extract ranked information about several interconnected domains, such as "hotels", "restaurants" or "concerts...
     
An execution environment for C-SPARQL queries
Found in: Proceedings of the 13th International Conference on Extending Database Technology (EDBT '10)
By Daniele Braga, Davide Francesco Barbieri, Michael Grossniklaus, Stefano Ceri
Issue Date:March 2010
pp. 441-452
Continuous SPARQL (C-SPARQL) is proposed as new language for continuous queries over streams of RDF data. It covers a gap in the Semantic Web abstractions which is needed for many emerging applications, including our focus on Urban Computing. In this domai...
     
Engineering search computing applications: vision and challenges
Found in: Proceedings of the 7th joint meeting of the European software engineering conference and the ACM SIGSOFT symposium on The foundations of software engineering on European software engineering conference and foundations of software engineering symposium (ESEC/FSE '09)
By Marco Brambilla, Stefano Ceri
Issue Date:August 2009
pp. 171-172
Search computing is a novel discipline whose goal is to answer complex, multi-domain queries. Such queries typically require combining in their results domain knowledge extracted from multiple Web resources; therefore, conventional crawling and indexing te...
     
C-SPARQL: SPARQL for continuous querying
Found in: Proceedings of the 18th international conference on World wide web (WWW '09)
By Daniele Braga, Davide Francesco Barbieri, Emanuele Della Valle, Michael Grossniklaus, Stefano Ceri
Issue Date:April 2009
pp. 66-66
C-SPARQL is an extension of SPARQL to support continuous queries, registered and continuously executed over RDF data streams, considering windows of such streams. Supporting streams in RDF format guarantees interoperability and opens up important applicati...
     
Model-driven design and development of semantic Web service applications
Found in: ACM Transactions on Internet Technology (TOIT)
By Dario Cerizza, Emanuele Della Valle, Federico Michele Facca, Irene Celino, Marco Brambilla, Stefano Ceri
Issue Date:November 2007
pp. 3-es
This article proposes a model-driven methodology to design and develop semantic Web service applications and their components, described according to the emerging WSMO standard. In particular, we show that business processes and Web engineering models have...
     
Designing data-intensive web applications for content accessibility using web marts
Found in: Communications of the ACM
By Francesca Rizzo, Maristella Matera, Stefano Ceri, Vera Demalde
Issue Date:April 2007
pp. 55-61
Developing technology to increase the accessibility of Web sites.
     
Model-driven development of context-aware Web applications
Found in: ACM Transactions on Internet Technology (TOIT)
By Federico M. Facca, Florian Daniel, Maristella Matera, Stefano Ceri
Issue Date:February 2007
pp. 2-es
Context-aware, multi-channel Web applications are more and more gaining consensus among both content providers and consumers, but very few proposals exist for their conceptual modeling. This article illustrates a conceptual framework that provides modeling...
     
Process modeling in Web applications
Found in: ACM Transactions on Software Engineering and Methodology (TOSEM)
By Ioana Manolescu, Marco Brambilla, Piero Fraternali, Stefano Ceri
Issue Date:October 2006
pp. 360-409
While Web applications evolve towards ubiquitous, enterprise-wide or multienterprise information systems, they face new requirements, such as the capability of managing complex processes spanning multiple users and organizations, by interconnecting softwar...
     
Extended memory (xMem) of web interactions
Found in: Proceedings of the 6th international conference on Web engineering (ICWE '06)
By Florian Daniel, Francesca Rizzo, Maristella Matera, Stefano Ceri
Issue Date:July 2006
pp. 177-184
Finding a previously visited page during a Web navigation is avery common and important kind of interaction. Most commercialbrowsers incorporate history mechanisms, which typically aresimple indexes of visited pages, sorted according to the timedimension. ...
     
Model-driven design and deployment of service-enabled web applications
Found in: ACM Transactions on Internet Technology (TOIT)
By Ioana Manolescu, Marco Brambilla, Piero Fraternali, Sara Comai, Stefano Ceri
Issue Date:August 2005
pp. 439-479
Significant effort is currently invested in application integration, enabling business processes of different companies to interact and form complex multiparty processes. Web service standards, based on WSDL (Web Service Definition Language), have been ado...
     
XQBE (XQuery By Example): A visual interface to the standard XML query language
Found in: ACM Transactions on Database Systems (TODS)
By Alessandro Campi, Daniele Braga, Stefano Ceri
Issue Date:June 2005
pp. 398-443
The spreading of XML data in many contexts of modern computing infrastructures and systems causes a pressing need for adequate XML querying capabilities; to address this need, the W3C is proposing XQuery as the standard query language for XML, with a langu...
     
XQBE: a visual environment for learning XML query languages
Found in: Proceedings of the 2005 ACM SIGMOD international conference on Management of data (SIGMOD '05)
By Alessandro Campi, Alessandro Raffio, Daniele Braga, Stefano Ceri
Issue Date:June 2005
pp. 903-905
XQBE (XQuery By Example) is a visual XML query language which, coherently with the hierarchical XML data model, uses tree-shaped structures to express queries and transformations over XML documents. These structures are annotated to express selection predi...
     
Model-driven design of service-enabled web applications
Found in: Proceedings of the 2005 ACM SIGMOD international conference on Management of data (SIGMOD '05)
By Aldo Bongio, Marco Brambilla, Piero Fraternali, Roberto Acerbis, Stefano Ceri
Issue Date:June 2005
pp. 851-856
Significant efforts are currently invested in application integration to enable the interaction and composition of business processes of different companies, yielding complex; multi-party processes. Web service standards, based on WSDL, have been adopted a...
     
Building reactive web applications
Found in: Special interest tracks and posters of the 14th international conference on World Wide Web (WWW '05)
By Federico M. Facca, Jacopo Armani, Stefano Ceri, Vera Demalde
Issue Date:May 2005
pp. 1058-1059
The Adaptive Web is a new research area addressing the personalization of the Web experience for each user. In this paper we propose a new high-level model for the specification of Web applications that take into account the manner users interact with the ...
     
Exception handling in workflow-driven Web applications
Found in: Proceedings of the 14th international conference on World Wide Web (WWW '05)
By Christina Tziviskou, Marco Brambilla, Sara Comai, Stefano Ceri
Issue Date:May 2005
pp. 170-179
As the Web becomes a platform for implementing B2B applications, the need arises of Web conceptual models for describing Web oriented workflow applications implementing business processes. In this context, new problems about process correctness arise, due ...
     
The Lowell database research self-assessment
Found in: Communications of the ACM
By Alon Halevy, Avi Silberschatz, Bruce Croft, David DeWitt, David Maier, Dieter Gawlick, Gerhard Weikum, Hans Schek, Hector Garcia Molina, Jeff Naughton, Jeff Ullman, Jennifer Widom, Jim Gray, Joe Hellerstein, Laura Haas, Martin Kersten, Michael Pazzani, Mike Carey, Mike Franklin, Mike Lesk, Mike Stonebraker, Phil Bernstein, Rakesh Agrawal, Rick Snodgrass, Serge Abiteboul, Stan Zdonik, Stefano Ceri, Timos Sellis, Yannis Ioannidis
Issue Date:May 2005
pp. 111-118
Database needs are changing, driven by the Internet and increasing amounts of scientific and sensor data. In this article, the authors propose research into several important new directions for database management systems.
     
Declarative specification of Web applications exploiting Web services and workflows
Found in: Proceedings of the 2004 ACM SIGMOD international conference on Management of data (SIGMOD '04)
By Ioana Manolescu, Marco Brambilla, Marco Dario, Piero Fraternali, Sara Comai, Stefano Ceri
Issue Date:June 2004
pp. 909-910
This demo presents an extension of a declarative language for specifying data-intensive Web applications. We demonstrate a scenario extracted from a real-life application, the Web portal of a computer manufacturer, including interactions with third-party s...
     
Rules in database systems
Found in: ACM Computing Surveys (CSUR)
By Raghu Ramakrishnan, Stefano Ceri
Issue Date:March 1988
pp. 109-111
Two-dimensional image motion is the projection of the three-dimensional motion of objects, relative to a visual sensor, onto its image plane. Sequences of time-orderedimages allow the estimation of projected two-dimensional image motion as either instantan...
     
Toward megaprogramming
Found in: Communications of the ACM
By Gio Wiederhold, Peter Wegner, Stefano Ceri
Issue Date:January 1988
pp. 89-99
We consider here the importance of an overall systems viewpoint in avoiding computer-related risks. According to Webster's, a system is a regularly interacting or interdependent group of items forming a unified whole. In computer systems, one person's comp...
     
Database design: methodologies, tools, and environments (panel session)
Found in: Proceedings of the 1985 ACM SIGMOD international conference on Management of data (SIGMOD '85)
By Al Hershey, Carlo Batini, David Reiner, George Gardarin, Stefano Ceri
Issue Date:May 1985
pp. 148-150
Relational algebras as developed by Codd and his followers are extended by noting an equivalence with functional languages. This leads to higher order relations, recursive definitions of relations, and the use of higher order relations as recursive data st...
     
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