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User Interfaces to Data Intensive Systems, 2001. UIDIS 2001. Proceedings. Second International Workshop on

Date May 31 2001-June 1 2001

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Displaying Results 1 - 16 of 16
  • Proceedings Second International Workshop on User Interfaces in Data Intensive Systems. UIDIS 2001

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    Freely Available from IEEE
  • Author index

    Page(s): 132
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    Freely Available from IEEE
  • Secure interface for risk management services

    Page(s): 96 - 100
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (760 KB) |  | HTML iconHTML  

    The authors present the architecture and functionality of the secure interface of RIMS. RIMS (Risk Management Services) is a secure intranet environment that supports the operational services in critical situations in four civil protection organisations in Europe. It contributes to information exchange and collaboration between experts for prevention, alert and crisis management in hazard management situations View full abstract»

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  • Using XML to semi-automatically derive user interfaces

    Page(s): 91 - 95
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (432 KB) |  | HTML iconHTML  

    Today, more and more data is being stored electronically, requiring systems to be able to save and retrieve large amounts of data efficiently. At the same time, user interfaces have to satisfy specific quality-of-service requirements. For example, in order to have a multimedia digital library supporting three different kinds of output devices (17" screens, PDAs, and mobile phones), each user interface has to be programmed separately according to its representation capabilities. This means that if the output devices are becoming more advanced, e.g., are colored or have higher resolutions, the interface parameters will change and, in many cases, the quality-of-service requirements too. This results in the user interfaces having to be amended or sometimes completely rewritten. The same applies when additional devices need to be supported, and they subsequently require new user interfaces to be built from scratch. Obviously, this is time-consuming and costly. The authors present an approach using XML as the basic technology to semiautomatically derive any kind of user interface for data intensive systems View full abstract»

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  • Search result visualisation with xFIND

    Page(s): 50 - 58
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1820 KB) |  | HTML iconHTML  

    The xFIND gatherer-broker architecture provides a wealth of metadata, which can be used to provide sophisticated search functionality. Local or remote documents are indexed and summaries and metadata are stored on an xFIND broker (server). An xFIND client can search a particular broker and access rich metadata for search result presentation, without having to fetch the original documents themselves. Search result sets are not only presented as a traditional ranked list, but also in an interactive scatterplot (Search Result Explorer) and using dynamic thematic clustering (VisIslands) View full abstract»

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  • A UML-based design environment for interactive applications

    Page(s): 60 - 71
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1704 KB) |  | HTML iconHTML  

    The Unified Modeling Language (UML) can be used for modelling both the structure and behaviour of software applications. However, although UML supports many different modelling notations, minimal support is provided for user interface (UI) design. The Unified Modeling Language for Interactive Applications (UMLi) is an extension of UML that provides support for UI design. UMLi has a user interface diagram for modelling abstract UI presentations and an extended activity diagram that provides constructors for modelling common UI behaviours. The paper presents the support provided for UI design by the UMLi design environment. Designers can use the environment to model applications and their UIs using UML and its extensions in UMLi. The tool provides facilities for modelling interaction objects, and the collaboration of these interaction objects with domain objects View full abstract»

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  • Considering possible outcomes and the user's environment in designing user interfaces for data-intensive systems

    Page(s): 80 - 90
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (856 KB) |  | HTML iconHTML  

    Application programmers are often unrealistic about the end-user's working environment and seldom cater for the effects of events which will interfere with the use of the application. Such events can disrupt the straightforward execution of a task and interfere with a user's concentration. These events, which are referred to in the paper as “quirks”, could be system breakdowns, various types of interruptions to application use, or human errors. Applications often make no concession to the inevitability of quirks and seldom give assistance in rebuilding mental context afterwards or facilitate understanding of the cause in the case of an error. In addition to the normal quirks caused merely by sharing office space or in working as part of a group of people, most data-intensive systems are distributed and this tends to precipitate a whole range of errors, hitherto unsuspected, which will probably be reported to the user in all their technical verbosity, reducing the user's understanding of and confidence in, the system and perhaps necessitating intervention by specialists. The inherent distributed nature of data-intensive systems also increases the likelihood of breakdowns, since so many more computers are involved in the application than the computer being used by the end user. Few applications consider the effects of quirks while developing their systems, and the user is therefore unsupported in recovering from them. The paper discusses how applications may be designed to better support users in dealing with the effects of quirks in data-intensive systems View full abstract»

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  • Visualization and knowledge discovery for high dimensional data

    Page(s): 5 - 24
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1432 KB) |  | HTML iconHTML  

    The goal of the article is to present a multidimensional visualization methodology and its applications to visual and automatic knowledge discovery. Visualization provides insight through images and can be considered as a collection of application specific mappings: ProblemDomain→VisuaLRange. For the visualization of multivariate problems, a multidimensional system of parallel coordinates (||-coords) is constructed which induces a one-to-one mapping between subsets of N-space and subsets of 2-space. The result is a rigorous methodology for doing and seeing N-dimensional geometry. We start with an overview of the mathematical foundations where it is seen that from the display of high-dimensional datasets, the search for multivariate relations among the variables is transformed into a 2D pattern recognition problem. This is the basis for the application to visual knowledge discovery which is illustrated in the second part with a real dataset of VLSI production. Then a recent geometric classifier is presented and applied to 3 real datasets. The results compared to those of 23 other classifiers have the least error. The algorithm has quadratic computational complexity in the size and number of parameters, provides comprehensible and explicit rules, does dimensionality selection, and orders these variables so as to optimize the clarity of separation between the designated set and its complement. Finally a simple visual economic model of a real country is constructed and analyzed in order to illustrate the special strength of ||-coords in modeling multivariate relations by means of hypersurfaces View full abstract»

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  • On-line analytical processing while immersed in a CAVE

    Page(s): 102 - 115
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    The paper presents a new approach for interactive visualization of data warehouses and data mining results in an immersed virtual environment. DIVE-ON is a data mining system prototype that is capable of constructing a multidimensional data model on a remote system, transporting pertinent views to a CAVE, creating an immersed virtual environment and providing an interactive data mining toolset. The main objective of this research is to examine the possibility of effective mining, visualizing and manipulating large amounts of distributed multidimensional data with little or no instructional help. To achieve this, DIVE-ON immerses the user in a virtual environment and provides a set of intuitive and effective interaction techniques within the CAVE environment. Intuitiveness was tackled by exploiting the user's considerable natural experience in interacting and navigating through a 3-dimensional world and by understanding the characteristics of a virtual environment that is well suited for the visual analysis of data. The ability to perform OLAP operations intuitively in such an environment provides the user with an effective means to conceptualize and gain an insight into large volumes of data from several distributed sources View full abstract»

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  • Interactive visual tools to support spatial multicriteria decision making

    Page(s): 127 - 131
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    Spatial decision making is a complex cognitive process which requires appropriate support by interactive maps and other computer graphics. We develop tools to facilitate multicriteria evaluation of options by individuals as well as tools for analysis of results of voting in group decision making View full abstract»

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  • A semantics based interactive query formulation technique

    Page(s): 43 - 49
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (608 KB) |  | HTML iconHTML  

    We present an interactive query formulation technique which enables exploitation not only of structural properties of data but also of semantic constraints as posed by the contents of data. The technique aims at the formulation of a semantically consistent or meaningful query by the end-user without any previous knowledge of syntax formalisms and data model semantics. This has been achieved by end-user guidance in that an inference engine suggests semantically rich query terms for further consideration by the end-user. The set of suggested terms at each interaction stage comply with the already considered query terms with respect to structure and content based semantics. Assignment or selection of operational terms are also allowed, if operational semantics comply with the semantics of data. The interactive query formulation component has been implemented in Java and runs on the client side of a client/server based query answering system architecture View full abstract»

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  • Specifying conceptual interface patterns in an object-oriented method with automatic code generation

    Page(s): 72 - 79
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    Too often, when software is being developed, the software engineers do not sufficiently consider how easy the system will be to use and learn. Following the steps of other related works developed in our research group, the paper deals with the problems of gathering information on the conceptual level about the interface characteristics of the applications that are generated in an automatic way using the OO-Method (O. Pastor et al., 1997; 1998). The basic idea is to include in the conceptual modelling process both the functionality and interface characteristics for obtaining a complete application that implements the systems modelled using the underlying object oriented approach. The “OO-Method” is based not only on the object oriented paradigm but also on the automatic programming paradigm. It combines the advantages of formal specification systems with the practice provided by conventional object oriented methodologies. After presenting a description of the OO-Method, the core of the paper focuses on how to collect interface information at the conceptual level, using a technique based on the identification of conceptual interface patterns which are independent of any implementation detail. The corresponding extensions to the OO-Method Conceptual Modelling notation that are necessary for modelling interfaces are presented View full abstract»

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  • Virtual library - paths to knowledge

    Page(s): 116 - 126
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    The paper focuses on the use of elaborated computer visualization techniques to support multi-user browsing within a digital collection of library books and subject categories. First, a short description of the research project is given, and the two different interfaces of the developed application, called `Explore Interface' and `Browse Interface' are described. Then, some of the theoretical issues and practical use of the interfaces are presented. Finally, the experiences gathered from this research project and their impact on possible future working directions are summarized View full abstract»

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  • Up-scaling a semantic navigation of an evidence-based medical information service on the Internet to data intensive extranets

    Page(s): 36 - 42
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (616 KB) |  | HTML iconHTML  

    While surfing through the World Wide Web, the user typically has to deal with a broad range of heterogeneity, not only with respect to contents but also to conceptual structure which is particularly reflected by the hyperlink structure. Supported by the protagonists of the Semantic Web, ontology-based approaches to structuring parts of the Internet or intranets have recently gained attention. These approaches usually rely on internal annotation of Web pages. Since it is not easy to commit distributed Web authors on a common terminology and correct syntax for annotation, internal annotation requires central access to all Web pages of interest. Therefore, the approach is well suited for (closed) intranets but not for the open Internet. In contrast, the article presents an ontology based approach to external annotation of Web pages. External annotation yields the advantage that existing documents need not to be edited, and therefore is potentially applicable to parts of the Internet which cannot be controlled. This approach is applied in order to up-scale a prototype semantic navigation of an evidence based medical information service on the Internet, running at a relatively small scale, to data intensive extranets View full abstract»

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  • Challenges in content management for B2B electronic commerce

    Page(s): 2 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (252 KB) |  | HTML iconHTML  

    Internet based electronic commerce provides a much higher level of flexibility and openness that will help to optimise business relationships. B2B market places provide completely new possibilities for their clients: instead of implementing one link to each supplier, a supplier is link to a large number of potential customers when linked to the market place; a supplier or customer can choose between a large number of potential customers and can optimise his business relationships. In a nutshell, B2B market places are a middleware, that help their customers to contact a large number of potential clients without running into the problem of implementing a large number of communication channels. Content management is the key issue in B2B electronic commerce. The article discusses the main obstacles for successful content management, it identifies the main tasks, and discusses possible support in mechanising them. Tools based on information retrieval, machine learning, and ontology technology can significantly help to improve efficiency and effectiveness of the overall process View full abstract»

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  • An object-oriented multi-mediator browser

    Page(s): 26 - 35
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    The area of data integration has gained increased popularity in recent years. A data browser is described for a data integration system where an intermediate layer of distributed mediators is used to query and integrate data from heterogeneous data sources. The data sources can be regular relational databases but also other data producing programs. They often have complex data representations and are often object oriented (OO). The mediator database layer is therefore also object oriented for a high abstraction level. An OO query interface is used to access the mediator layer from application programs and users. For a scalable and component based architecture, the mediators can be used as servers for other mediators. This leads to a distributed mediator architecture where mediator servers interact with other mediators and data sources. The OO multi-mediator browser GOOVI is presented, which enables maintenance of such distributed mediator databases. With GOOVI, all autonomous mediators in a federation can be viewed, queried, and updated. This multi-mediator browser also provides user interfaces for integrating data through OO views. The paper describes the architecture and functionality of GOOVI View full abstract»

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