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Proceedings. 13th International Workshop on Database and Expert Systems Applications最新文献

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Spatial and temporal aware, trajectory mobility profile based location management for mobile computing 空间和时间感知，基于轨迹移动轮廓的移动计算位置管理
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045982
Jianting Zhang, L. Gruenwald
{"title":"Spatial and temporal aware, trajectory mobility profile based location management for mobile computing","authors":"Jianting Zhang, L. Gruenwald","doi":"10.1109/DEXA.2002.1045982","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045982","url":null,"abstract":"In this paper, we propose a new context-aware profile-based location management scheme. Besides temporal context that has been used in previous proposals, it considers spatial context of mobility profiles as well as recent travel trajectories. We present a conceptual framework for cooperation between the location database management system (LDMS) and the mobile host (MH) in keeping track of the mobility profiles for location management in mobile computing. Although extra overheads are imposed on both the LDMS side and MH side, they are well justified in terms of reducing paging latency and paging traffic.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123039678","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
Simplifying PKI usage through a client-server architecture and dynamic propagation of certificate paths and repository addresses 通过客户机-服务器架构和证书路径和存储库地址的动态传播简化PKI的使用
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045948
Brian Hunter
{"title":"Simplifying PKI usage through a client-server architecture and dynamic propagation of certificate paths and repository addresses","authors":"Brian Hunter","doi":"10.1109/DEXA.2002.1045948","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045948","url":null,"abstract":"PKI deployment and use has not met its expectations. One reason that PKIX has not been fully accepted is due to the complexity of the system. Any application wishing to use PKI must implement complicated logic for certificate parsing, certificate path building and policy management. Certificate path building, in particular, is further complicated by the non-standardized method of certificate discovery and retrieval. Thus, many applications do not utilize or cannot utilize public key technology. We propose a new PKI server which offers access to PKI services and only requires a simple client API and a small client library that enables even resource-limited clients to be supported. This can greatly reduce application development time and complexity and allow PKI usage to propagate into more applications. Furthermore, we introduce the concept of a PKI server-to-server protocol which allows knowledge of certificate repositories and certificate paths to be shared among different PKI Servers. This technique will simplify the task of certificate retrieval and path building for individual PKI Servers.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123116032","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: 12
An efficient processing of queries with joins and aggregate functions in data warehousing environment 数据仓库环境中使用连接和聚合函数高效处理查询
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045993
Jinho Kim, Y. Kim, Sang-Wook Kim, Sooho Ok
{"title":"An efficient processing of queries with joins and aggregate functions in data warehousing environment","authors":"Jinho Kim, Y. Kim, Sang-Wook Kim, Sooho Ok","doi":"10.1109/DEXA.2002.1045993","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045993","url":null,"abstract":"It is very important to process efficiently expensive queries including joins and/or aggregate functions in a data warehousing environment since there resides an enormous volume of data and the processing of these queries takes a lot of time. In this paper, we propose a new method for processing the queries including both joins and aggregate functions. The proposed method performs grouping of dimension tables with group-by conditions at first and then processes joins by using bitmap join indices. This allows us to process aggregate functions by accessing fact tables only, thus it can reduce the serious performance degradation of existing methods. In order to show the superiority of the proposed method, we develop a cost model for both the proposed and the existing ones, and perform extensive simulations based on the TPC-H benchmark.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121724909","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
Devising best practices for customization of a multi-agent production planning technology 设计多代理生产计划技术定制的最佳实践
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045967
Philippos Koutsakas, A. Koumpis
{"title":"Devising best practices for customization of a multi-agent production planning technology","authors":"Philippos Koutsakas, A. Koumpis","doi":"10.1109/DEXA.2002.1045967","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045967","url":null,"abstract":"We report on our experiences related to the provision of a best practices and customization guide for the application of multi-agent technologies in the production management field.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125204388","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
Distance learning and CPD: special education and knowledge management 远程教育与持续专业进修:特殊教育与知识管理
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045922
P. Bayliss
{"title":"Distance learning and CPD: special education and knowledge management","authors":"P. Bayliss","doi":"10.1109/DEXA.2002.1045922","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045922","url":null,"abstract":"The field of special education has undergone major transformations in the recent past. UK Government legislation has focused practice on inclusive education which has shifted the focus for meeting special educational needs in ordinary schools away from professional/pedagogical models towards bureaucratic/organisational models. The shift in paradigm has required a shift in the development of teachers away from models of 'knowledge-in-action', towards an understanding of 'organisational knowledge' which is contextualized and dynamic. The paper presents a view that 'organisational knowledge' can be supported through coherent research-based continuing professional development for teachers and educational leaders, which uses ICT to develop 'knowledge management' through supporting 'hyperlearning'.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125135923","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
Mobile query optimization based on agent-technology for distributed data warehouse and OLAP applications 基于代理技术的分布式数据仓库和OLAP应用的移动查询优化
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045994
A. Hameurlain, F. Morvan, Philipp Tomsich, Robert M. Bruckner, H. Kosch, P. Brezany
{"title":"Mobile query optimization based on agent-technology for distributed data warehouse and OLAP applications","authors":"A. Hameurlain, F. Morvan, Philipp Tomsich, Robert M. Bruckner, H. Kosch, P. Brezany","doi":"10.1109/DEXA.2002.1045994","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045994","url":null,"abstract":"With the rapid collection of data in a wide variety of fields - ranging from business transactions through medical investigations to scientific research - the demands on data analysis tools are ever growing. Today's challenges are less related to data storage and information retrieval, but can rather be found in the analysis of data on a global scale in a heterogeneous information system: technologies such as on-line analytical processing, data mining and knowledge discovery in databases all require the integration of information and efficient query processing. In distributed and heterogeneous datasets this can only be achieved by the efficient distribution and scheduling of subtasks in a distributed computing resource. We propose the use of mobile query optimizations based on agent-technology for distributed data warehouse and OLAP applications to adapt the concurrent query execution dynamically to the computing resource it executes on. This is of particular importance in cluster and grid computing.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128055299","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: 6
The MaBE project: an agent-based environment for business networks MaBE项目:用于业务网络的基于代理的环境
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045971
Alexander Hämmerle, G. Weichhart, K. Fessl
{"title":"The MaBE project: an agent-based environment for business networks","authors":"Alexander Hämmerle, G. Weichhart, K. Fessl","doi":"10.1109/DEXA.2002.1045971","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045971","url":null,"abstract":"The MaBE (Multiagent Business Environment) project is a R&D project in the 5th framework program of the European Union. Its primary objective is the development of an open, agent-based environment to enable dynamic and automated combination of multiple, complementary and alternative services between different users and providers along the whole value chain. The industrial grounding is ensured by user requirements from industrial end-users in the project, all being league players in their respective business areas. We motivate our research objectives and describe the basic concepts of the project, highlighting the holonic aspects.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132712450","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: 4
Designing vector-based ontologies: can technology empower open interpretation of culture heritage objects? 设计基于向量的本体:技术能否赋予文化遗产对象开放的解释?
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045950
Lily Díaz-Kommonen, Mauri Kaipainen
{"title":"Designing vector-based ontologies: can technology empower open interpretation of culture heritage objects?","authors":"Lily Díaz-Kommonen, Mauri Kaipainen","doi":"10.1109/DEXA.2002.1045950","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045950","url":null,"abstract":"The goal of this essay is to present our investigation of how a vector-based ontology can account for the idiosyncrasy of interpreting multifaceted information, such as is typical to cultural heritage resources and traces of human activity in general. In this study we model individual classifications of cultural heritage material in terms of the metaphor of projection from a space of properties onto a classificatory layer. We assume each artifact to be defined by a large, virtually infinite number of descriptive features that can be depicted as vectors These vectors define the position of the artifact in the multidimensional space of properties. An individual understanding of the material is described as a nonlinear projection of positions in the space of properties onto a layer of classifications. Implications of this approach are anticipated in the light of applying it to an example of data, derived from a 16/sup th/ Century corpus of work.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114293896","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: 5
Efficient identification of traitors in fingerprinted multimedia contents 指纹多媒体内容中汉奸的高效识别
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045941
Marcel Fernández, M. Soriano
{"title":"Efficient identification of traitors in fingerprinted multimedia contents","authors":"Marcel Fernández, M. Soriano","doi":"10.1109/DEXA.2002.1045941","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045941","url":null,"abstract":"In a fingerprinting scheme a different set of marks is embedded in each copy of a digital object, in order to deter illegal redistribution. A group of dishonest users, called traitors, collude to create a pirate copy that hides their identities, by putting together different parts of their copies. If the sets to be embedded are the codewords of an error correcting code then efficient algorithms can be used to trace the guilty. In this paper we present a tracing algorithm that, by taking advantage of soft-decision decoding techniques, finds all possible identifiable traitors.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"344 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122758329","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
An architecture for collaboratively assembled moderated information bearing Web sites 一种架构，用于协作地组装承载适度信息的Web站点
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045913
R. Cooper
{"title":"An architecture for collaboratively assembled moderated information bearing Web sites","authors":"R. Cooper","doi":"10.1109/DEXA.2002.1045913","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045913","url":null,"abstract":"As originally conceived, the World-Wide Web was intended for the purpose of sharing information. Many Web sites realise this aim by publishing pages from a data repository which supports browsing and searching. Building such a site is challenging in the first place, but since the information to be published will be spread among the community who wish to share the data, maintenance is an even greater challenge. In this case, the developers must continuously solicit, receive, moderate and integrate new information into the Web site. The additional task of moderation is considerably more time consuming even than the initial Web site construction and requires appropriate tools to expedite the process. This paper describes the prototype of an architecture for constructing Web sites which take part in a cycle of publishing and receiving data, in which the pages also solicit fresh information by the use of forms and E-mail. The architecture facilitates both site construction and maintenance, by allowing the date to be declaratively specified and then generating the data repository, Web pages and moderating program automatically.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124248424","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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