28 results on '"Catarci, Tiziana"'
Search Results
2. Big Data Semantics
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Ceravolo, Paolo, Azzini, Antonia, Angelini, Marco, Catarci, Tiziana, Cudré-Mauroux, Philippe, Damiani, Ernesto, Mazak, Alexandra, Keulen, Maurice, Jarrar, Mustafa, Santucci, Giuseppe, Sattler, Kai-Uwe, Scannapieco, Monica, Wimmer, Manuel, Wrembel, Robert, and Zaraket, Fadi
- Abstract
Big Data technology has discarded traditional data modeling approaches as no longer applicable to distributed data processing. It is, however, largely recognized that Big Data impose novel challenges in data and infrastructure management. Indeed, multiple components and procedures must be coordinated to ensure a high level of data quality and accessibility for the application layers, e.g., data analytics and reporting. In this paper, the third of its kind co-authored by members of IFIP WG 2.6 on Data Semantics, we propose a review of the literature addressing these topics and discuss relevant challenges for future research. Based on our literature review, we argue that methods, principles, and perspectives developed by the Data Semantics community can significantly contribute to address Big Data challenges.
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- 2018
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3. The Sapienza Digital Library from the Holistic Vision to the Actual Implementation.
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Catarci, Tiziana, Di Iorio, Angela, and Schaerf, Marco
- Subjects
ASSOCIATIONS, institutions, etc. ,DIGITAL libraries ,INFORMATION resources management ,ELECTRONIC information resources ,INTERNET - Abstract
The Sapienza Digital Library (SDL) was released in December 2013 as result of a research project undertaken by Sapienza University of Rome and the Cineca consortium, since 2011. The digital library has been collecting materials coming from different kind of organizations including departments, libraries, and archives, belonging or donated to Sapienza University. The main result of the project was the development of an information framework supporting multidisciplinary organizations in managing digital materials, maintaining scientific, organizational and operational responsibilities. The technical solution adopted has found a trade-off between the standardization of the digital processes and products, and the preservation of the scientific materials’ peculiarities. The automatic standard translation, and the enrichment of the digital resource's metadata have reached the main goal of providing digital resources with the essential information necessary to their management in different technological contexts. The reuse of the digital information and contents, in different application contexts, has converted the holistic vision of a digital library in the implementation of an information infrastructure, setting the foundation for the long-term access and usability of its digital assets. [ABSTRACT FROM AUTHOR]
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- 2014
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4. A User-Based Method for Speech Interface Development.
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Hutchison, David, Kanade, Takeo, Kittler, Josef, Kleinberg, Jon M., Mattern, Friedemann, Mitchell, John C., Naor, Moni, Nierstrasz, Oscar, Pandu Rangan, C., Steffen, Bernhard, Sudan, Madhu, Terzopoulos, Demetri, Tygar, Doug, Vardi, Moshe Y., Weikum, Gerhard, Stephanidis, Constantine, Dubinsky, Yael, Catarci, Tiziana, and Kimani, Stephen
- Abstract
There is a consensus on the significance and high contribution of user involvement in the process of user interfaces development. However, there is no standard way to implement user involvement in software development processes. Dealing with speech-based interfaces that involve vocal interaction of speaking and hearing, the need of user involvement is increased. In this paper, we focus on the characteristics of speech interface development and suggest a user-based method that enables continuous user evaluation. We illustrate the method implementation in two different software projects that contain speech interfaces. [ABSTRACT FROM AUTHOR]
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- 2007
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5. An Ontology-Guided Approach to Change Detection of the Semantic Web Data.
- Author
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Spaccapietra, Stefano, Atzeni, Paolo, Chu, Wesley W., Catarci, Tiziana, Sycara, Katia P., Qin, Li, and Atluri, Vijayalakshmi
- Abstract
To achieve improved availability and performance, often, local copies of remote data from autonomous sources are maintained. Web search engines are the primary examples of such services. Increasingly, these services are utilizing the Semantic Web as it is often envisioned as a machine-interpretable web. In order to keep the local repositories current, it is essential to synchronize their content with that of their original sources. Change detection is the first step to accomplish this. It is essential to have efficient change detection mechanisms as the size of the local repositories is often very large. In this paper, we present an approach that exploits the semantic relationships among the concepts in guiding the change detection process. Given changes to some seed instances, a reasoning engine fires a set of pre-defined rules to characterize the profile of the changed target instances. In addition to change detection, our proposed semantics-based approach of utilizing semantic associations can be utilized in other applications such as guiding information discovery for agents, consistency maintenance among distributed information sources, among others. [ABSTRACT FROM AUTHOR]
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- 2006
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6. XSLTGen: A System for Automatically Generating XML Transformations Via Semantic Mappings.
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Spaccapietra, Stefano, Atzeni, Paolo, Chu, Wesley W., Catarci, Tiziana, Sycara, Katia P., Waworuntu, Stella, and Bailey, James
- Abstract
XML is rapidly emerging as a dominant standard for representing and exchanging information. The ability to transform and present data in XML is crucial and XSLT is a relatively recent programming language, specially designed to support this activity. Despite its utility, however, XSLT is widely considered a difficult language to learn. In this paper, we present a novel system called XSLTGen, an automatic XSLT Generator. This system automatically generates an XSLT stylesheet, given a source XML document and a desired output HTML or XML document. It allows users to become familiar with and learn XSLT stylesheets, based solely on their knowledge of XML or HTML. Our method for automatically generating XSLT transformations is based on the use of semantic mappings between the input and output documents. We show how such mappings can be first discovered and then employed to create XSLT stylesheets. The results of our experiments show that XSLTGen works well with a number of different varieties of XML and HTML documents. [ABSTRACT FROM AUTHOR]
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- 2006
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7. Aligning Ontologies, Evaluating Concept Similarities and Visualizing Results.
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Spaccapietra, Stefano, Atzeni, Paolo, Chu, Wesley W., Catarci, Tiziana, Sycara, Katia P., Souza, Kleber Xavier Sampaio, Davis, Joseph, and Medeiros Evangelista, Silvio Roberto
- Abstract
Ontologies have been created for many different subjects and by independent groups around the world. The nonexistence of a commonly accepted and used general purpose upper-ontology makes it difficult to integrate these ontologies through merge and alignment operations. The majority of the algorithms proposed so far rely on syntactic analysis, disregarding the structural properties of the source ontologies. In our previous work, we proposed an alignment method that considers the structural properties of an upper-ontology constructed using a thesaurus and Formal Concept Analysis technique (FCA). We also analyzed the FCA's lattice structure and proposed a measure of similarity based on Tversky's model, which allowed us to identify closely related concepts in different source ontologies. In this paper, we apply the alignment method to ontologies developed for a completely different domain, and enhance the solution by providing a navigational aid for the lattice. It is well known that one of the main drawbacks of the application of FCA is that the resulting lattice soon becomes cluttered when the number of objects and attributes increases. The proposed solution is based on hyperbolic visualization and on structural elements of the lattice. Keywords: ontology alignment, Formal Concept Analysis, lattice visualization, similarity measures [ABSTRACT FROM AUTHOR]
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- 2006
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8. Heuristic Strategies for the Discovery of Inclusion Dependencies and Other Patterns.
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Spaccapietra, Stefano, Atzeni, Paolo, Chu, Wesley W., Catarci, Tiziana, Sycara, Katia P., Koeller, Andreas, and Rundensteiner, Elke A.
- Abstract
Inclusion dependencies (INDs) between databases are assertions of subset-relationships between sets of attributes (dimensions) in two relations. Such dependencies are useful for a number of purposes related to information integration, such as database similarity discovery and foreign key discovery. An exhaustive approach at discovering INDs between two relations suffers from the dimensionality curse, since the number of potential mappings between the attributes of two relations is exponential in the number of attributes. For this reason, levelwise (Apriori-like) approaches at discovery do not scale beyond relations with 8 to 10 attributes. Approaches modeling the similarity space as graphs or hypergraphs are promising, but also do not scale very well. This paper discusses approaches to scale discovery algorithms for INDs and some other similarity patterns in databases. The major obstacle to scalability is the exponentially growing size of the data structure representing potential INDs. Therefore, the focus of our solution is on heuristic techniques that reduce the number of IND candidates considered by the algorithm. Despite the use of heuristics, the accuracy of the results is good for real-world data. Experiments are presented assessing the quality of the discovery results versus the runtime savings. We conclude that the heuristic approach is useful and improves scalability significantly. It is particularly applicable for relations that have attributes with few distinct values. [ABSTRACT FROM AUTHOR]
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- 2006
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9. Conceptual Modelling Patterns for Roles.
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Spaccapietra, Stefano, Atzeni, Paolo, Chu, Wesley W., Catarci, Tiziana, Sycara, Katia P., Cabot, Jordi, and Raventós, Ruth
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Roles are meant to capture dynamic and temporal aspects of real-world objects. The role concept has been used with many semantic meanings: dynamic class, aspect, perspective, interface or mode. This paper identifies common semantics of different role models found in the literature. Moreover, it presents a set of conceptual modelling patterns for the role concept that include both the static and dynamic aspects of roles. In particular, we propose the Role as Entity Types conceptual modelling pattern to deal with the full role semantics. A conceptual modelling pattern is aimed at representing a specific structure of knowledge that appears in different domains. The use of these patterns eases the definition of roles in conceptual schemas. In addition, we describe the design of schemas defined by using the patterns in order to implement them in any object-oriented language. [ABSTRACT FROM AUTHOR]
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- 2006
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10. A Method for Pruning Ontologies in the Development of Conceptual Schemas of Information Systems.
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Spaccapietra, Stefano, Atzeni, Paolo, Chu, Wesley W., Catarci, Tiziana, Sycara, Katia P., Conesa, Jordi, and Olivé, Antoni
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In the past, most conceptual schemas of information systems have been developed essentially from scratch. Currently, however, several research projects are considering an emerging approach that tries to reuse as much as possible the knowledge included in existing ontologies. Using this approach, conceptual schemas would be developed as refinements of (more general) ontologies. However, when the refined ontology is large, a new problem that arises using this approach is the need of pruning the concepts in that ontology that are superfluous in the final conceptual schema. This paper proposes a new method for pruning ontologies in this approach. We also show how to adapt the method to prune ontologies in other contexts. Our method is general and it can be adapted to most conceptual modeling languages. We give the complete details of its adaptation to the UML. On the other hand, the method is fully automatic. The method has been implemented. We illustrate the method by means of its application to a case study that refines the Cyc ontology. [ABSTRACT FROM AUTHOR]
- Published
- 2006
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11. Matching Ontologies in Open Networked Systems: Techniques and Applications.
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Spaccapietra, Stefano, Atzeni, Paolo, Chu, Wesley W., Catarci, Tiziana, Sycara, Katia P., Castano, Silvana, Ferrara, Alfio, and Montanelli, Stefano
- Abstract
In open networked systems a varying number of nodes interact each other just on the basis of their own independent ontologies and of knowledge discovery requests submitted to the network. Ontology matching techniques are essential to enable knowledge discovery and sharing in order to determine mappings between semantically related concepts of different ontologies. In this paper, we describe the H-Match algorithm and related techniques for performing matching of independent ontologies in open networked systems. A key feature of H-Match is that it can be dynamically configured for adaptation to the semantic complexity of the ontologies to be compared, where the number and type of ontology features that can be exploited during the matching process is not known in advance as it is embedded in the current knowledge request. Furthermore, this number can vary, also for the same ontologies, each time a new matching execution comes into play triggered by a knowledge request. We describe how H-Match enforces this capabilities through a combination of syntactic and semantic techniques as well as through a set of four matching models, namely surface, shallow, deep, and intensive. Then, we describe the application of H-Match and its implementation for knowledge discovery in the framework of the Helios peer-based system. Finally, we present experimental results of using H-Match on different test cases, along with a discussion on precision and recall. [ABSTRACT FROM AUTHOR]
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- 2006
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12. Semantic Interoperation Among Data Systems at a Communication Level.
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Spaccapietra, Stefano, Atzeni, Paolo, Chu, Wesley W., Catarci, Tiziana, Sycara, Katia P., Bagüés, Miren I., Bermúdez, Jesús, Illarramendi, Arantza, Tablado, Alberto, and Goñi, Alfredo
- Abstract
The traditional perception of isolated data systems is changing to a new one where the interest of a real and efficient interoperation among those data systems is recognized. However, many problems must be solved yet before a real interoperation becomes true. In order to overcome the existing problems, there is a considerable number of proposals that can be found in the specialized literature that promote the idea of semantic interoperability. A new framework to achieve semantic interoperability among agent based data systems at a communication level is proposed in this paper. This framework permits agents belonging to different data systems 1) to send each other suitable messages without requiring the establishment of a common communication pattern in advance; 2) to understand, completely or partially, those messages that are interchanged among themselves; and 3) to invoke web services offered by the data systems at a high level without needing to go into technical details. An ontology that captures the semantics of different communication acts is the key element for supporting the functionalities provided by the framework. Furthermore, the framework has been extended to support semantic descriptions of web services, which favor their automatic discovery. The usefulness of the presented framework is evaluated using two case study of interoperation among heterogeneous data systems; on one side through the agents of those systems, and on the other side, through the combination of an agent and a web service. [ABSTRACT FROM AUTHOR]
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- 2006
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13. Using Ontologies for XML Data Cleaning.
- Author
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Meersman, Robert, Tari, Zahir, Herrero, Pilar, Milano, Diego, Scannapieco, Monica, and Catarci, Tiziana
- Abstract
Real data is often affected by errors and inconsistencies. Many of them depend on the fact that schemas cannot represent a sufficiently wide range of constraints. Data cleaning is the process of identifying and possibly correcting data quality problems that affect the data. Cleaning data requires to gather knowledge on the domain to which the data refer. Anyway, existing data cleaning techniques still access this knowledge as a fragmented collection of heterogenous rules and ad hoc data transformations. Furthermore, data cleaning methodologies for an important class of data based on the semistructured XML data model have not yet been proposed. In this paper we introduce the OXC framework, that offers a methodology for XML data cleaning based on a uniform representation of domain knowledge through an ontology We describe how to define XML related data quality metrics based on our domain knowledge representation, and give a definition of various metrics related to the completeness data quality dimension. [ABSTRACT FROM AUTHOR]
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- 2005
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14. The Design of an Authoring Interface to Make eLearning Content Accessible.
- Author
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Costabile, Maria Francesca, Paternò, Fabio, Gabrielli, Silvia, Mirabella, Valeria, Teso, Massimiliano, and Catarci, Tiziana
- Abstract
This paper presents the rationale and design process of an authoring interface that enables didactic experts to create or modify eLearning content to make it accessible by learners with special needs. The tool has been designed according to a methodological framework and a set of guidelines for eLearning accessibility previously developed by our group. A key aspect of our framework consists in helping authors to preserve the didactic quality of the eLearning experiences provided to disabled learners (in particular, visually impaired ones) beyond assuring their mere physical access to online materials. A user-centred design process has been adopted to develop a usable prototype of the authoring interface, named aLearning, that we describe below. [ABSTRACT FROM AUTHOR]
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- 2005
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15. Recourse for Guiding Didactical Creators in the Development of Accessible e-Learning Material.
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Masoodian, Masood, Jones, Steve, Rogers, Bill, Mirabella, Valeria, Kimani, Stephen, and Catarci, Tiziana
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Most of the existing efforts for supporting the preparation and delivery of accessible e-learning materials propose guidelines that prevalently ad-dress technical accessibility issues. However, little or no consideration is given to the didactical creators in the learning material preparation. The existing guidelines also usually provide generic indications on alternative forms of didactical content to enable equivalent access of the content. However, the sole provision of equivalent forms does not guarantee effective access. While this paper acknowledges the role of the existing guidelines, it proposes that the didactical domain creators be provided with a non-technical recourse that can enable them to contribute to or participate in the development process of accessible e-learning content aiming at guaranteeing an effective learning experience. [ABSTRACT FROM AUTHOR]
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- 2004
16. From the web of data to a world of action.
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Dix, Alan, Lepouras, Giorgos, Katifori, Akrivi, Vassilakis, Costas, Catarci, Tiziana, Poggi, Antonella, Ioannidis, Yannis, Mora, Miguel, Daradimos, Ilias, Md.Akim, Nazihah, Humayoun, Shah Rukh, and Terella, Fabio
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WEB databases ,SEMANTIC Web ,WEB services ,ALGORITHMS ,INFORMATION resources management ,MATHEMATICAL models ,HUMAN-computer interaction ,USER interfaces - Abstract
Abstract: This paper takes as its premise that the web is a place of action, not just information, and that the purpose of global data is to serve human needs. The paper presents several component technologies, which together work towards a vision where many small micro-applications can be threaded together using automated assistance to enable a unified and rich interaction. These technologies include data detector technology to enable any text to become a start point of semantic interaction; annotations for web-based services so that they can link data to potential actions; spreading activation over personal ontologies, to allow modelling of context; algorithms for automatically inferring ‘typing’ of web-form input data based on previous user inputs; and early work on inferring task structures from action traces. Some of these have already been integrated within an experimental web-based (extended) bookmarking tool, Snip!t, and a prototype desktop application On Time, and the paper discusses how the components could be more fully, yet more openly, linked in terms of both architecture and interaction. As well as contributing to the goal of an action and activity-focused web, the work also exposes a number of broader issues, theoretical, practical, social and economic, for the Semantic Web. [ABSTRACT FROM AUTHOR]
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- 2010
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17. A REVIEW OF STANDARD USABILITY PRINCIPLES IN THE CONTEXT OF MOBILE COMPUTING.
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Bertini, Enrico, Catarci, Tiziana, Kimani, Stephen, and Dix, Alan
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MOBILE computing ,USER interfaces ,ELECTRONIC data processing ,COMPUTER interfaces ,COMMUNICATION - Abstract
The advent of mobile computing brings, together with advantages and exciting new opportunities, some novel challenges, among which mobile usability is a prominent one. Ensuring usability is made difficult by the presence of non-conventional aspects like: mobility, device limits, and changing contexts, which are rather peculiar of the mobile setting and that require some non-conventional and/or new knowledge to be addressed. It is necessary, in fact, to see if the tools at disposal of the interaction designer are still appropriate and, where not adequate, apply some refinements. Usability principles represent the basic knowledge of the interaction designer and are the foundation for usability evaluation methods, therefore, in this paper, we start addressing the problem by proposing a review of standard usability principles. We selected a wide set of commonly accepted principles and went over them to see how they apply in mobile computing. In this paper, we report on this activity, pointing out new requirements and interesting findings. The inquiry is also supported by a description of limits and opportunities posed by mobile devices and a short review of appropriate and new usability evaluation methods. [ABSTRACT FROM AUTHOR]
- Published
- 2005
18. An Interactive Visual Exploration of Medical Data for Evaluating Health Centres.
- Author
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Catarci, Tiziana, Santucci, Giuseppe, and Silva, Sonia Fernandes
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MEDICAL informatics ,COMPUTERS in medicine ,MEDICAL records ,INFORMATION science ,MEDICAL communication - Abstract
Proposes to enhance medical information systems by providing an interactive visual exploitation of data sets. Essential issues at development of medical information systems; Overview of the main visualization techniques for interactive exploration of medical records; Description of a hemodialysis scenario; Basic functionalities and architecture of the system.
- Published
- 2003
19. Pushing the Boundaries of the Digital Libraries Field: Preface IRCDL 2014.
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Agosti, Maristella, Catarci, Tiziana, and Esposito, Floriana
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DIGITAL libraries ,CONFERENCES & conventions ,CULTURAL property ,SCIENTIFIC communication - Abstract
This contribution is the preface of the volume of post-proceedings of the 10 th Italian Research Conference on Digital Libraries, IRCDL 2014. The volume contains the reports on the invited presentations and the accepted papers. The accepted papers were initially reviewed for presentation at the conference, and after the presentation the papers were resubmitted by the authors in a revised version that included the suggestions received during the presentation at the conference. The resubmitted versions of the papers were reviewed by at least three anonymous reviewers and the accepted papers were revised by the authors taking into considerations the reviewers’ suggestions. [ABSTRACT FROM AUTHOR]
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- 2014
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20. WORKPAD: Process Management and Geo-Collaboration Help Disaster Response
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Catarci, Tiziana, de Leoni, Massimiliano, Marrella, Andrea, Mecella, Massimo, Russo, Alessandro, Steinmann, Renate, and Bortenschlager, Manfred
- Abstract
In complex emergency/disaster scenarios, persons from teams from various emergency-response organizations collaborate to achieve a common goal. In these scenarios, the use of smart mobile devices and applications can improve the collaboration dynamically. The lack of basic interaction principles can be dangerous, as it could increase the level of disaster or can make the efforts ineffective. This paper examines the main results of the project WORKPAD finished in December 2009. WORKPAD worked on a two-level architecture to support rescue operators during emergency management. The use of a user-centered design methodology during the entire development cycle has guaranteed that the architecture and resulting system meet end-user requirements. The feasibility of its use in real emergencies is also proven by a demonstration showcased with real operators. The paper includes qualitative and quantitative results and presents guidelines that can be useful in developing emergency-management systems.
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- 2011
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21. Measuring and Diffusing Data Quality in a Peer-to-Peer Architecture
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Milano, Diego, Scannapieco, Monica, and Catarci, Tiziana
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Data quality is becoming an increasingly important issue in environments characterized by extensive data replication. Among such environments, this article focuses on cooperative information systems (CISs), for which it is very important to declare and access quality of data. The article describes a general methodology for evaluating quality of data, and the design of an architectural component, named quality factory, that implements quality evaluation of XML data. The detailed design and implementation of a further service, named data quality broker, are presented. The data quality broker accesses data and related quality distributed in the CIS and improves quality of data by comparing different copies present in the system. The data quality broker has been implemented as a peer-to-peer service and a set of experiments on real data show its effectiveness and performance behavior.
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- 2007
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22. Emerging issues in visual interfaces<fnr rid="fn1"><fn id="fn1">This work has been partially supported by the Italian Ministry of University and Scientific and Technological Research under the projects on Usability of Multimedia Interfaces and Advanced Interaction Techniques for Information Spaces (ex MURST 60%).</fn>
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CATARCI, TIZIANA, SANTUCCI, GIUSEPPE, and TARANTINO, LAURA
- Abstract
The continual growth of the Global Information Infrastructure (GII) prompts dramatic changes in both the types of information involved, and the kind of people who access it. In this paper, we briefly survey the most recent results with respect to the User Interface area, as emerged from the work presented at the fourth edition of the Conference on Advanced Visual Interfaces (AVI'98), focusing on interaction with large information spaces, multimodality, and usability issues.
- Published
- 1999
23. Query representation and management in a multiparadigmatic visual query environment
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Catarci, Tiziana, Chang, Shi Kuo, and Santucci, Giuseppe
- Abstract
We propose a framework for database querying providing the user with several interaction paradigms based on different (i.e., form-based, diagrammatic, iconic, and hybrid) visual representations of the database. A unified model, namely the Graph Model, is used as the common underlying model, in terms of which databases expressed in the most common data models can be easily converted. Graph Model databases can be queried by means of the multiparadigmatic interface. The semantics of the query operations is formally defined in terms of the Graphical Primitives. Such a formal approach enables the query manager to maintain the same query consistently in any representation. In the proposed multiparadigmatic environment, the user can switch from one interaction paradigm to another during query formulation, so that the most suitable query representation can be found.
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- 1994
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24. Visual Query Systems for Databases: A Survey
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CATARCI, TIZIANA, COSTABILE, MARIA F., LEVIALDI, STEFANO, and BATINI, CARLO
- Abstract
Visual query systems (VQSs) are query systems for databases that use visual representations to depict the domain of interest and express related requests. VQSs can be seen as an evolution of query languages adopted into database management systems; they are designed to improve the effectiveness of the human–computer communication. Thus, their most important features are those that determine the nature of the human–computer dialogue. In order to survey and compare existing VQSs used for querying traditional databases, we first introduce a classification based on such features, namely the adopted visual representations and the interaction strategies. We then identify several user types and match the VQS classes against them, in order to understand which kind of system may be suitable for each kind of user. We also report usability experiments which support our claims. Finally, some of the most important open problems in the VQS area are described.
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- 1997
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25. A Hypergraph-based Framework for Visual Interaction with Databases
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Catarci, Tiziana and Tarantino, Laura
- Abstract
The advent of graphical workstations has led to a new generation of interaction tools in database systems, where the use of graphics greatly enhances the quality of the interaction. Yet, Visual Query Languages present some limitations, deriving partly from their own paradigm and partly from the available technology. One of the basic drawbacks is the lack of formalization, in contrast to the well-established traditional languages. In this paper we propose a theoretical framework for visual interaction with databases, having a particular kind of hypergraph, the Structure Modeling Hypergraph (SMH), as a representation tool, able to capture the features of existing data models. SMHs profit from the basic property of diagrams while overcoming their limitations. Notable characteristics of SMHs are: uniform and unified representation of intensional and extensional aspects of databases, direct representation of containment relationships, and immediate applicability of direct manipulation primitives. SMHs are not a new data model but a new representation language that provides the syntactic rules for describing the structuring mechanisms of data models. SMHs can be queried by formal systems closed under queries. Copyright 1995, 1999 Academic Press
- Published
- 1995
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26. Visual Query Systems
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Catarci, Tiziana and Costabile, Maria Francesca
- Abstract
No abstract
- Published
- 1996
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27. Editorial
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Catarci, Tiziana, Mylopoulos, John, and Orlowska, Maria
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- 2005
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28. The prototype of the DARE system
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Catarci, Tiziana and Santucci, Giuseppe
- Published
- 2001
- Full Text
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