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Displaying 1-15 out of 15 total
T-SWEETS: An Alternative to the Stimulus Collaboration from Trust Inference in Social Networks
Found in: 2012 Brazilian Symposium on Collaborative Systems (SBSC)
By Edeilson Milhomem Silva,Diego Oliveira Rodrigues,Jackson Gomes de Souza,Ana Carolina Salgado,Silvio Romero Lemos Meira
Issue Date:October 2012
pp. 168-173
This paper presents a novel method to infer trustiness in social networks entitled T-SWEETS. It is also presents its application at Konnen, a knowledge management platform on social networks based. The features explored in T-SWEETS come from research done ...
A User Context Management Approach for Query Personalization Settings
Found in: 2012 IEEE Sixth International Conference on Semantic Computing (ICSC)
By Marcelo Freitas,Jimmy Silva,Davi Bandeira,Antonio Mendonca,Damires Souza,Ana Carolina Salgado
Issue Date:September 2012
pp. 333-335
Data-oriented applications have experienced a huge growth mainly in distributed settings. The increasing amount of available data has made it hard for users to find the information they need in the way they consider relevant. To help matters, a user-centri...
Exploring Web Semantic Knowledge and User Feedback to Improve Ontology Matching
Found in: Database and Expert Systems Applications, International Workshop on
By Thiago Pachêco Andrade Pereira,Carlos Eduardo Pires,Ana Carolina Salgado
Issue Date:September 2011
pp. 234-238
The first step to integrate multiple data sources is to decrease the heterogeneity between their schemas. This task can be facilitated if data source schemas are represented as ontologies. In this case, ontology matching enables the identification of corre...
Towards an Ubiquitous and Context Sensitive Public Transportation System
Found in: International Conference on Ubi-Media Computing
By Vaninha Vieira, Luiz Rodrigo Caldas, Ana Carolina Salgado
Issue Date:July 2011
pp. 174-179
Transportation systems deal with dynamic and sometimes inconstant scenarios, which could involve events like traffic jams or accidents. Intelligent Transportation Systems (ITS) should be projected in a way that their behavior changes according to the real ...
Summarizing ontology-based schemas in PDMS
Found in: Data Engineering Workshops, 22nd International Conference on
By Carlos Eduardo Pires, Paulo Sousa, Zoubida Kedad, Ana Carolina Salgado
Issue Date:March 2010
pp. 239-244
Quickly understanding the content of a data source is very useful in several contexts. In a Peer Data Management System (PDMS), peers can be semantically clustered, each cluster being represented by a schema obtained by merging the local schemas of the pee...
A process for the design of Context-Sensitive Systems
Found in: International Conference on Computer Supported Cooperative Work in Design
By Vaninha Vieira, Patricia Tedesco, Ana Carolina Salgado
Issue Date:April 2009
pp. 143-148
Context-Sensitive Systems (CSS) demand that designers consider new aspects and challenges in comparison to traditional applications. In a preliminary experiment, we observed that developers have difficulties when including the concept of context in their a...
AutonomousDB: A Tool for Autonomic Propagation of Schema Updates in Heterogeneous Multi-database Environments
Found in: Autonomic and Autonomous Systems, International Conference on
By Arlei Calazans Moraes, Ana Carolina Salgado, Patrícia Azevedo Tedesco
Issue Date:April 2009
pp. 251-256
One of the biggest challenges of building and maintaining applications with long life cycles, is dealing with the inevitable changes in requirements that occur over time. Many of these applications depend on DBMS that most often suffer direct consequences ...
Hoarding and prefetching for mobile databases
Found in: Computer and Information Science, 5th IEEE/ACIS International Conference on
By Mariano Cravo Teixeira Neto, Ana Carolina Salgado
Issue Date:July 2006
pp. 219-224
<p>One of the main goals of mobile data access is to reach the ubiquity inherent to the mobile systems: to access information regardless of time and place. Due to mobile systems restrictions such as, for instance, limited memory and narrow bandwidth,...
A Performance Comparison among the Traditional R-trees, the Hilbert R-tree and the SR-tree
Found in: Chilean Computer Science Society, International Conference of the
By Ricardo Rodrigues Ciferri, Ana Carolina Salgado, Valéria Cesário Times, Mário A. Nascimento, Geovane Cayres Magalhães
Issue Date:November 2003
pp. 3
This work investigates the performance of several spatial access methods with respect to the distribution of the indexed spatial objects. Although having gathered storage and insertion costs as well, this work focuses on some issues regarding query costs. ...
A Metadata-Based Approach to Define a Standard to Visual Queries in GIS
Found in: Database and Expert Systems Applications, International Workshop on
By Valéria Gonçalves Soares Elias, Ana Carolina Salgado
Issue Date:September 2000
pp. 693
This article proposes a framework that creates a standard to formulate visual queries in Geographical Information Systems (GIS). The queries use visual elements and visual spatial operators, where each element is represented according to a Geographic Data ...
Load balance for semantic cluster-based data integration systems
Found in: Proceedings of the 17th International Database Engineering & Applications Symposium (IDEAS '13)
By Ana Carolina Salgado, Edemberg Rocha da Silva, Guilherme Barros de Souza
Issue Date:October 2013
pp. 174-179
Data integration systems based on Peer-to-Peer environments have been developed to integrate dynamic, autonomous and heterogeneous data sources on the Web. Some of these systems adopt semantic approaches for clustering their data sources, reducing the sear...
Towards an information quality approach to enhance query routing processes
Found in: Proceedings of the 14th International Conference on Information Integration and Web-based Applications & Services (IIWAS '12)
By Ana Carolina Salgado, Bruno F. F. Souza, Crishane Freire, Damires Souza, Maria C. M. Batista
Issue Date:December 2012
pp. 311-314
Query answering has been addressed as a key issue in distributed environments such as Peer Data Management Systems (PDMS). An important step in this process regards query routing, i.e., how to find peers that are most likely to provide matching results acc...
Using information quality for the identification of relevant web data sources: a proposal
Found in: Proceedings of the 14th International Conference on Information Integration and Web-based Applications & Services (IIWAS '12)
By Ana Carolina Salgado, Bernadette Farias Lóscio, Damires Souza, Maria C. M. Batista
Issue Date:December 2012
pp. 36-44
In the last decade, applications that make use of data sources available on the Web have experienced a huge growth. One of the main problems regarding that consists in finding the most relevant data sources for a given application. In a general way, a data...
A set of aggregation functions for spatial measures
Found in: Proceeding of the ACM 11th international workshop on Data warehousing and OLAP (DOLAP '08)
By Ana Carolina Salgado, Anjolina Grisi de Oliveira, Clenubio Souza, Joel da Silva, Robson do Nascimento Fidalgo, Valeria Cesario Times
Issue Date:October 2008
pp. 21-27
A number of studies have been developed in recent years aimed at integrating pertinent concepts and technologies for analytical multidimensional (OLAP) and geographic (GIS) processing environments. This type of integrated environment has been identified as...
Performance evaluation of multidimensional access methods
Found in: Proceedings of the eighth ACM international symposium on Advances in geographic information systems (GIS '00)
By Ana Carolina Salgado, Ricardo Rodrigues Ciferri
Issue Date:November 2000
pp. 183-184
In this paper, we describe an experimental examination of a well-known group of multidimensional access methods, called the R-tree group. The test environment aimed at investigating how the performance of such access methods is affected by factors such as ...