DEXA WorkshopsPub Date : 2006-09-04DOI: 10.1109/DEXA.2006.27
Olivier L. Georgeon, Alain Mille, Thierry Bellet
{"title":"Analyzing Behaviorial Data for Refining Cognitive Models of Operator","authors":"Olivier L. Georgeon, Alain Mille, Thierry Bellet","doi":"10.1109/DEXA.2006.27","DOIUrl":"https://doi.org/10.1109/DEXA.2006.27","url":null,"abstract":"We present a methodology and a tool for analyzing the activity of an operator interacting with a complex technical device. The goal is of refining cognitive models of the operator by relating them to patterns of behavior in real situations. The activity is observed to be modeled as a trace having a graph structure The trace is transformed according to metadata in order to become meaningful in the context of modeling theories. Our \"Trace Based System\" thus gathers both a representation of the activity and a representation of the analyst's expertise, for facilitating the discovery of knowledge in the field of cognitive psychology. The approach is illustrated by its application for car driver cognitive modeling.","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123499737","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}
DEXA WorkshopsPub Date : 2005-09-19DOI: 10.1109/DEXA.2005.119
Naohiro Hayashibara, X. Défago, M. Takizawa, T. Katayama
{"title":"Information Propagation on the phi Failure Detector","authors":"Naohiro Hayashibara, X. Défago, M. Takizawa, T. Katayama","doi":"10.1109/DEXA.2005.119","DOIUrl":"https://doi.org/10.1109/DEXA.2005.119","url":null,"abstract":"It is widely recognized that distributed systems would greatly benefit from the availability of a generic failure detection service. There are however several issues that must be addressed before such a service can actually be implemented. In this paper, we highlight the issue related to propagating information on failures in the phi failure detector for large-scale systems. Traditionally, failure detection systems provide information on suspects to every processes. However, it is not the efficient way in the large-scale system. We consider the notification system that propagates information on suspicions with content-based filtering","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128008827","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}
DEXA WorkshopsPub Date : 2004-08-30DOI: 10.1109/DEXA.2004.1333596
A. D. Keijzer, M. V. Keulen
{"title":"A Possible World Approach to Uncertain Relational Data","authors":"A. D. Keijzer, M. V. Keulen","doi":"10.1109/DEXA.2004.1333596","DOIUrl":"https://doi.org/10.1109/DEXA.2004.1333596","url":null,"abstract":"Data exchange between embedded systems and other small or large computing device increases. Since data in different data sources may refer to the same real world objects, data cannot simply be merged. Furthermore, in many situations, conflicts in data about the same real world objects need to be resolved without interference from a user. We report on an attempt to make a RDBMS probabilistic, i.e., data in a relation represents all possible views on the real world, in order to achieve unattended data integration. We define a probabilistic relational data model and review standard SQL query primitives in the light of probabilistic data. It appears that thinking in terms of 'possible worlds' is powerful in determining the proper semantics of these query primitives.","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121252735","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}
DEXA WorkshopsPub Date : 2004-08-30DOI: 10.1109/DEXA.2004.1333592
G. Tré, R. D. Caluwe
{"title":"Towards More Flexible Database Systems: A Logical Framework Based on Extended Possibilistic Truth Values","authors":"G. Tré, R. D. Caluwe","doi":"10.1109/DEXA.2004.1333592","DOIUrl":"https://doi.org/10.1109/DEXA.2004.1333592","url":null,"abstract":"Every database model needs an underlying logical framework in order to support the handling of integrity constraints, database querying, etc. We discuss how a many-valued logic based on possibility theory, can serve for these purposes and moreover can be advantageously in those cases where one explicitly wants to deal with missing information and/or with imperfect information. The potentials of the logic for both database modelling and database querying have been discussed. Finally, the presented approach has been compared with other existing approaches from both the traditional and the fuzzy database communities.","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126094507","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}
DEXA WorkshopsPub Date : 2003-09-01DOI: 10.1109/DEXA.2003.1232103
Z. Constantinescu
{"title":"Towards an Autonomic Distributed Computing System","authors":"Z. Constantinescu","doi":"10.1109/DEXA.2003.1232103","DOIUrl":"https://doi.org/10.1109/DEXA.2003.1232103","url":null,"abstract":"Increasing hardware performance of desktop computersaccounts for a low-cost computing potential that is waitingto be efficiently used. However, the complexity of installationand maintenance of a large number of distributed heterogeneouscomputers is limiting the use of such systemson a large scale. Systems which are autonomic, capableof managing themselves are required. The architecture ofQADPZ (Quite Advanced Distributed Parallel Zystem), anopen source system for heterogeneous distributed computingis presented. The system allows the management anduse of the computational power of idle computers from anetwork of PCs. Different autonomic computing features ofthe system are described, together with possible extensionsof the system towards an autonomic distributed computingsystem.","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121307907","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}
DEXA WorkshopsPub Date : 2003-09-01DOI: 10.1109/DEXA.2003.1232063
J. L. Muñoz, J. Forné, O. Esparza, M. Soriano, David Jodra
{"title":"Evaluation of Revocation Systems with a JAVA Test-bed","authors":"J. L. Muñoz, J. Forné, O. Esparza, M. Soriano, David Jodra","doi":"10.1109/DEXA.2003.1232063","DOIUrl":"https://doi.org/10.1109/DEXA.2003.1232063","url":null,"abstract":"Public key cryptography is widely used to provide different security services. The PKI is the infrastructure that supports the public key cryptography and the revocation of certificates implies one of its major costs. Java test-bed has been developed for certificate revocation by J.L. Munoz and J. Forne (2003). The goal of this paper is to evaluate the most used revocation systems using this test-bed. In this sense, some results in terms of downlink bandwidth and processing capacity requirements are shown for CRL, OCSP and ADMHT.","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114734863","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}
DEXA WorkshopsPub Date : 2002-09-02DOI: 10.1109/DEXA.2002.10011
G. Kersten
{"title":"Message from the e-Negotiations Workshop Chairs","authors":"G. Kersten","doi":"10.1109/DEXA.2002.10011","DOIUrl":"https://doi.org/10.1109/DEXA.2002.10011","url":null,"abstract":"egotiations are believed to be an advantageous coordination mechanism for electronic markets that transcend the selling of commodities as well as for the coordination of complex interactions among organisations. However, most e-Commerce negotiation systems to date can only support price negotiations (dynamic pricing). This may be one of the reasons why current electronic markets struggle for acceptance, liquidity, and prosperity traditional negotiations typically comprise the discussion of additional attributes of a deal such as delivery terms or payment conditions. Hence, support for complex multi-attribute negotiations may become a critical success factor for the next generation of electronic markets and, more generally, for all types of commercial and non-commercial electronic exchanges.","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"115 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":"116593927","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}
DEXA WorkshopsPub Date : 2002-09-02DOI: 10.1109/DEXA.2002.10008
P. Brezany, A. Hameurlain, Robert M. Bruckner, Philipp Tomsich
{"title":"Message from the VLDWH Workshop Chair","authors":"P. Brezany, A. Hameurlain, Robert M. Bruckner, Philipp Tomsich","doi":"10.1109/DEXA.2002.10008","DOIUrl":"https://doi.org/10.1109/DEXA.2002.10008","url":null,"abstract":"ver the last few years data warehousing, data mining and analytical online processing emerged to form a new paradigm for the storage and analysis of data in business environments and increasingly in scientific environments. With the use of these technologies in a wide variety of application, the necessity for highly scalable and fast data management tools capable of handling multiple terabytes of data in a data warehousing environment became apparent. Additionally, the growth of the Internet and Grid computing lead to the re-emergence of distributed, parallel computing platforms and to a trend to perform computing task in a decentralized manner, efficiently utilizing resources in multiple geographic locations. All this led to the emergence of research on the implementation and management of very large data warehouses and now includes such areas as zero-latency data warehousing for simulation and forecasting, distributed data warehouses and data mining for medical applications as well as for high energy physics and web warehousing as a foundation for the development of searchable archives of web content. O","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","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":"129177770","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}
DEXA WorkshopsPub Date : 2002-09-02DOI: 10.1109/DEXA.2002.10015
V. Marík, M. Pechoucek, D. McFarlane
{"title":"Message from the HoloMAS Workshop Chairs","authors":"V. Marík, M. Pechoucek, D. McFarlane","doi":"10.1109/DEXA.2002.10015","DOIUrl":"https://doi.org/10.1109/DEXA.2002.10015","url":null,"abstract":"OLOMAS02 is the third workshop organized within the frame of the DEXA conference. The first two workshops (HOLOMAS00 held in Greenwich, UK, HOLOMAS01 in Munich) documented the imperative need in starting mutual communication and cooperation between two research communities who were at the time working in parallel without any deeper interaction. That is, the AI community aimed at multi-agent systems and the groups concentrated around the holonic manufacturing technology. These two workshops, and especially the post-workshop proceedings [1], [2] have helped to start more intensive, cross-community discussions and contributed to better mutual understanding of the standpoints of individual camps. The workshops helped to clarify the roles of holonic and multi-agent solutions in realtime control and non-real time decision making, to unify the terminology and in general to link both communities together. The idea of using function-block oriented IEC standards for the real-time control and the FIPA-based software agents for the higher-level decision making seems to be widely accepted. New holonic/agent architectures bridging the gap between both these control levels appeared, some of them are also reported in the workshop proceedings. From the implementation point of view, Java dominates on both the levels and seems to be one of the tools helping to solve the difficult migration problems when new highly distributed paradigms have to operate the legacy, centralized systems.","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"42 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":"131286240","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}
DEXA WorkshopsPub Date : 2002-09-02DOI: 10.1109/DEXA.2002.10009
W. Winiwarter, Ingrid Zukerman, Tsunenori Mine
{"title":"Message from the NLIS Workshop Chairs","authors":"W. Winiwarter, Ingrid Zukerman, Tsunenori Mine","doi":"10.1109/DEXA.2002.10009","DOIUrl":"https://doi.org/10.1109/DEXA.2002.10009","url":null,"abstract":"We would like to thank the DEXA 2002 Workshop General Chair (Professor Roland Wagner) and the organizing committee of the 13th International Conference on Database and Expert Systems Applications (DEXA 2002) for their support and their cooperation. Many thanks go to Ms. Gabriela Wagner for providing a great deal of assistance. We are very indebted to all program committee members and external reviewers who have reviewed the papers very carefully and in a timely manner. We would also like to thank all the authors who submitted their papers to NLIS 2002; they provided us with an excellent technical program.","PeriodicalId":107291,"journal":{"name":"DEXA Workshops","volume":"116 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":"121447756","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}
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