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Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99最新文献

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Electronic copyright management systems: requirements, players and technologies 电子版权管理系统:要求、参与者和技术
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795300
F. Bartolini, V. Cappellini, A. Piva, A. Fringuelli, M. Barni
{"title":"Electronic copyright management systems: requirements, players and technologies","authors":"F. Bartolini, V. Cappellini, A. Piva, A. Fringuelli, M. Barni","doi":"10.1109/DEXA.1999.795300","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795300","url":null,"abstract":"The large diffusion of multimedia products distributed through CD-ROMs (off-line) and the Internet (on-line) is raising many concerns regarding the preservation of authors' rights. On the other hand, these new publication methods appear to be very attractive for increasing business opportunities. The problem of electronic management of copyright has thus become very important and many projects are being carried out worldwide to deal with it. The aim of this paper is to survey the main concepts which electronic copyright management systems should be based on. In particular the requirements, the players and the key technologies are presented.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116103838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
A Markov random field approach for querying and reconciling heterogeneous databases 异构数据库查询与协调的马尔可夫随机场方法
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795164
G. Bianco, V. D. Antonellis, S. Castano, M. Melchiori
{"title":"A Markov random field approach for querying and reconciling heterogeneous databases","authors":"G. Bianco, V. D. Antonellis, S. Castano, M. Melchiori","doi":"10.1109/DEXA.1999.795164","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795164","url":null,"abstract":"The problem of defining a uniform query interface to access distributed heterogeneous data sources is becoming more and more important in the modern, distributed information systems. Main focus is on how to handle semantic heterogeneity of data in different sources to support integration and query processing activities. In both cases, techniques to assess similarity between schema elements of different data sources are required, to support the derivation of a reconciled representation at the global level and similarity-based search over different sources. In this paper we introduce an approach based on the Markov random field theory for similarity-based matching of database schemas.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123469221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
The Appearance: a design pattern for continuous field interfaces 外观:连续字段接口的设计模式
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795236
J. Bazzocco, Gisela Trilla, S. Gordillo
{"title":"The Appearance: a design pattern for continuous field interfaces","authors":"J. Bazzocco, Gisela Trilla, S. Gordillo","doi":"10.1109/DEXA.1999.795236","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795236","url":null,"abstract":"Many of the data manipulated in a geographic information system are not discrete; instead, they must be treated as continuous fields. The ability to characterize a continuous field as a data type including related operations as well as estimation methods and the representation of the sampling points, facilitates the design and the use of this kind of data. However, the possibility to design and manipulate continuous fields is not enough to obtain a powerful tool, aspects related to the visualization of such data have to be also defined in order to realize spatial analysis. In this paper we present a flexible architecture to visualize data from continuous fields. Such architecture has been developed under the object-oriented paradigm, and the goal is to obtain a mechanism to allow the specification and evolution of the visual aspects independently of the implementation.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122866346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multidimensional access to European environmental data 多维访问欧洲环境数据
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795262
W. Kazakos, Ralf Kramer, Ralf Nikolai, D. Nikolaidis
{"title":"Multidimensional access to European environmental data","authors":"W. Kazakos, Ralf Kramer, Ralf Nikolai, D. Nikolaidis","doi":"10.1109/DEXA.1999.795262","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795262","url":null,"abstract":"Catalogues have been an indispensable tool to locate books in libraries for centuries. Their equivalent in our networked world are catalogue systems which facilitate search and retrieval especially on the Web. We explore the requirements and their technical solutions to support search and retrieval according to multiple dimensions in Web based catalogue systems. We show how components that address individual dimensions can also be combined to tackle multidimensional queries. Several European environmental catalogue systems that we have been involved in are used as examples to illustrate the approach which can easily be transferred to further application e.g., e-commerce.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121524096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and implementation of a brokerage service for electronic procurement 电子采购代理服务的设计与实现
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795256
M. Bichler, M. Kaukal
{"title":"Design and implementation of a brokerage service for electronic procurement","authors":"M. Bichler, M. Kaukal","doi":"10.1109/DEXA.1999.795256","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795256","url":null,"abstract":"The paper describes design and implementation of a brokerage service for electronic procurement. We concentrate on the negotiation phase during the market transaction, as current electronic procurement systems do not support this phase appropriately. First, we describe generic market structures from a microeconomic point of view to provide context. Based on this classification we focus on heterogeneous monopsonies, a structure which is quite common in corporate procurement. As negotiation on multiple attributes of a deal is crucial in these markets, we introduce multi-attribute auctions as a resource allocation mechanism for heterogeneous monopsonies. Then we describe design and implementation of the main components of a brokerage service for multi-attribute auctions.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126175781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
The Diritto Italia project to search for legal information on the Internet diitto Italia项目在互联网上搜索法律信息
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795284
M. Ragona, Loriana Serrotti, Fiorenza Socci, Pier-Luigi Spinosa
{"title":"The Diritto Italia project to search for legal information on the Internet","authors":"M. Ragona, Loriana Serrotti, Fiorenza Socci, Pier-Luigi Spinosa","doi":"10.1109/DEXA.1999.795284","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795284","url":null,"abstract":"The affirmation and diffusion of the use of telematic networks, the Internet in particular brings a new and, in certain respects, revolutionary element. Access to information in this net-like perspective, is diffused; the user is immersed, so to speak, in a rich and disordered mass of data which spreads all over the globe. The vision of centralised databases, with their undisputed advantages, is joined by a broader vision of information which is distributed, dislocated on several points of the Net. It is necessary to make use of tools such as guides, specific search engines and intelligent agents which enable the user to determine his bearings and obtain pertinent information. On these premises, after taking an overview of Italian legal information online, the article throws light on the need to use specific mechanisms enabling the user to efficiently retrieve information, pointing out the solutions possible at present. It then describes the operational contribution proposed by the Istituto per la Documentazione Giuridica as a first step towards retrieving law on the Internet. Then prospects are examined and ideas for reflection are solicited, in the hope of pooling ideas, experiences and efforts to attain satisfactory and concretely practical solutions.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126202153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SIAM: an integrated intelligent system for retrieving, organising and managing on-line legal information SIAM:用于检索、组织和管理网上法律信息的综合智能系统
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795285
A. Cammelli, E. Fameli
{"title":"SIAM: an integrated intelligent system for retrieving, organising and managing on-line legal information","authors":"A. Cammelli, E. Fameli","doi":"10.1109/DEXA.1999.795285","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795285","url":null,"abstract":"Thanks to recent developments in informatic and telematic technologies, the documentary material needed for the legal theorist and operator to conduct their activities-in any sector of law and as concerns any related professional function-can now be retrieved for the most part by consulting the many legal archives online. These differ in structure and features and are available especially in the Italian systems of the Court of Cassation, Chamber of Deputies, Senate and State Mint and Printery, in addition to the various specialistic information systems created by public authorities and organisations, but also by institutions and private concerns, and distributed through the channels of traditional and electronic publishing (printed material or on CD-ROM), or on the international telematic networks (especially Internet).","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124419453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Temporal annotated constraint logic programming with multiple theories 多理论的时间标注约束逻辑规划
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795234
P. Mancarella, Alessandra Raffaetà, F. Turini
{"title":"Temporal annotated constraint logic programming with multiple theories","authors":"P. Mancarella, Alessandra Raffaetà, F. Turini","doi":"10.1109/DEXA.1999.795234","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795234","url":null,"abstract":"The paper aims at building a framework that provides basic operators, with a clear semantics, for combining different knowledge bases and allowing the representation and the handling of temporal information. Our approach stems from two separate lines of research: the general studies on meta-level operators on logic programs introduced by Brogi et al. (1993, 1994) and temporal annotated constraint logic programming (TACLP) defined by Fruhwirth (1996). We propose a language MuTACLP that integrates the above mentioned approaches. Atoms are annotated with temporal information and such annotations are managed via a constraint theory as in TACLP. Mechanisms for structuring programs and combining separate knowledge bases are provided through meta-level operators. A top-down semantics of MuTACLP is given by exploiting meta-logic.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128996522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Adding distribution to a workflow management system 向工作流管理系统添加分发
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795118
L. Böszörményi, R. Eisner, H. Groiss
{"title":"Adding distribution to a workflow management system","authors":"L. Böszörményi, R. Eisner, H. Groiss","doi":"10.1109/DEXA.1999.795118","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795118","url":null,"abstract":"The workflow management system, AltaVista Works, has been extended to be able to process workflows in a distributed, partly even parallel manner. Build-time data are replicated over all participating workflow servers. The distribution of workflow execution is based on migration. Instead of the usual static pre-partitioning, a highly dynamic management of distribution is applied.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127732960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Web-based modelling techniques providing interactive views of geographical data with VRML 基于web的建模技术，使用VRML提供地理数据的交互式视图
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795182
F. Rossi, M. Spagnuolo
{"title":"Web-based modelling techniques providing interactive views of geographical data with VRML","authors":"F. Rossi, M. Spagnuolo","doi":"10.1109/DEXA.1999.795182","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795182","url":null,"abstract":"The work presented has been developed within the scope of the on-going EC project, aimed at the definition of an advanced and integrated system for transparent access and visualization of coastal zone management tools, via the Web. In particular, we describe the approach adopted for embedding of a surface modelling module into the Web environment. The result is a user friendly application that provides service for accessing high level modelling functionality and for visualizing or navigating over coastal areas in a desktop virtual reality environment.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132358140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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