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

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An electronic payment scheme allowing special rates for anonymous regular customers 一种电子支付方案，允许匿名老客户享受特殊费率
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045933
Chunfu Tan, Jianying Zhou
{"title":"An electronic payment scheme allowing special rates for anonymous regular customers","authors":"Chunfu Tan, Jianying Zhou","doi":"10.1109/DEXA.2002.1045933","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045933","url":null,"abstract":"Anonymous electronic payment systems are regarded as essential for the protection of the privacy of consumers participating in electronic transactions. In this paper, we present an electronic payment scheme which allows regular customers not only to get special rates from the merchant but also to be kept anonymous to the merchant.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"4 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":"130490377","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
Knowledge exploration in historical artefact record keeping 历史文物记载中的知识探索
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045957
K. Matousek, Z. Kouba
{"title":"Knowledge exploration in historical artefact record keeping","authors":"K. Matousek, Z. Kouba","doi":"10.1109/DEXA.2002.1045957","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045957","url":null,"abstract":"This article presents a modern generation of information systems in the area of historical artefact record keeping, based on ontology modelling techniques. The weaknesses of classical database-oriented systems are described and compared with ontology-based solutions. Advanced knowledge exploration based on knowledge technologies like operational knowledge processing languages enable to perform tasks that were unachievable by the former approaches. Practical domain modelling discussion and examples are included, as well as a suggested future research topics.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"354 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":"122234262","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
Data warehouse clustering on the Web Web上的数据仓库集群
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045995
Aristides Triantafillakis, P. Kanellis, D. Martakos
{"title":"Data warehouse clustering on the Web","authors":"Aristides Triantafillakis, P. Kanellis, D. Martakos","doi":"10.1109/DEXA.2002.1045995","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045995","url":null,"abstract":"A distributed data warehouse can be defined as a logically integrated collection of shared data that is physically distributed across the nodes of a computer network, such as the Internet. In the context of the Internet and collaborative E-commerce environments data warehouse refreshment requires a shift of emphasis from associating it purely with materialized view maintenance towards establishing a framework that supports refreshment in a federation of data warehouses. Adopting system and information quality as success variables we argue that what is required is inherently more complex than the materialized view maintenance problem and propose an open multi-agent architecture for the incremental maintenance of this kind of materialized view.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"49 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":"115398915","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: 7
Tokenization and proper noun recognition for information retrieval 信息检索中的标记化和专有名词识别
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045906
F. Barcala, Jesús Vilares, Miguel A. Alonso, J. G. Gil, M. Ferro
{"title":"Tokenization and proper noun recognition for information retrieval","authors":"F. Barcala, Jesús Vilares, Miguel A. Alonso, J. G. Gil, M. Ferro","doi":"10.1109/DEXA.2002.1045906","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045906","url":null,"abstract":"In this paper we consider a set of natural language processing techniques that can be used to analyze large amounts of texts, focusing on the advanced tokenizer which accounts for a number of complex linguistic phenomena, as well as for pre-tagging tasks such as proper noun recognition. We also show the results of several experiments performed in order to study the impact of the strategy chosen for the recognition of proper nouns.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"106 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113996952","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: 30
Combining ontologies and document retrieval techniques: a case study for an e-learning scenario 结合本体和文档检索技术:一个电子学习场景的案例研究
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045888
S. Baumann, A. Dengel, Markus Junker, T. Kieninger
{"title":"Combining ontologies and document retrieval techniques: a case study for an e-learning scenario","authors":"S. Baumann, A. Dengel, Markus Junker, T. Kieninger","doi":"10.1109/DEXA.2002.1045888","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045888","url":null,"abstract":"Ontologies are a perfect knowledge base for enriching standard document retrieval and classification techniques. In this paper we describe such an approach for the application of e-learning. We choose a basic combination of ontologies, some simple heuristics and classic term, resp. document similarity measure to deliver the required functionality. Our system has a distributed architecture handling the linkage to a database-driven document management system with browser-suited output. First results are presented showing the advantages of automatic generation of queries based on ontologies.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"4 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":"121180128","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: 13
An advanced I/O architecture for supporting mixed workloads in an active data warehouse environment 用于支持活动数据仓库环境中的混合工作负载的高级I/O体系结构
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045992
S. Brobst, M. Morris
{"title":"An advanced I/O architecture for supporting mixed workloads in an active data warehouse environment","authors":"S. Brobst, M. Morris","doi":"10.1109/DEXA.2002.1045992","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045992","url":null,"abstract":"Active data warehouse environments for advanced decision support demand extreme service levels in the area of performance delivery. An active data warehouse environment, however, has very different I/O patterns than a purely traditional data warehouse implementation. An active data warehouse must be designed to support a mixed workload consisting of tactical and strategic decision support queries with highly variable I/O patterns. In this paper we present a solution for increasing the performance of mixed workloads through use of cylinder reads and optimized block sizes. Tradeoffs in implementation strategies and performance implications are discussed along with future areas of research.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"72 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":"121301884","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: 7
Indexing mobile objects on the plane 索引平面上的移动对象
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045978
Dimitris Papadopoulos, G. Kollios, D. Gunopulos, V. Tsotras
{"title":"Indexing mobile objects on the plane","authors":"Dimitris Papadopoulos, G. Kollios, D. Gunopulos, V. Tsotras","doi":"10.1109/DEXA.2002.1045978","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045978","url":null,"abstract":"We present a method to index objects moving on the plane in order to efficiently answer range queries about their position in the future. This problem is motivated by real-life applications, like predicting future congestion areas in a highway system, or allocating more bandwidth for areas where high concentration of mobile phones is imminent. We consider the problem in the external memory model of computation and present a dynamic technique. An experimental evaluation is included that shows the applicability of our method.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"104 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":"124826525","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: 42
Private auctions with multiple rounds and multiple items 多轮、多件物品的私人拍卖
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045932
A. Sadeghi, M. Schunter, Sandra Steinbrecher
{"title":"Private auctions with multiple rounds and multiple items","authors":"A. Sadeghi, M. Schunter, Sandra Steinbrecher","doi":"10.1109/DEXA.2002.1045932","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045932","url":null,"abstract":"For selling spectrum licenses economists have designed new auction types proceeding over several rounds and offering several licenses simultaneously. Communication between bidders usually is forbidden to prevent collusions (i.e., through separate compartments and supervision). We investigate these auctions from the cryptographic point of view and identify that the usual implementation by a succession of (traditional) sealed-bid auctions where the auctioneer announces at least the winner and winning bid of each round offers a covert channel to the bidders. The announcement should be limited to the minimum a bidder needs to know for taking part in the next round. We suggest that the bids made are kept private and she only gets to know which items she currently wins. Only at the end, overall winners and winning bids are revealed. We present a protocol based on a special sealed-bid auction that implements this idea.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"54 9 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":"128665222","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
A mental cognitive model of Web semantic for e-customer profile 电子客户资料Web语义的心理认知模型
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045886
Irene S. Y. Kwan
{"title":"A mental cognitive model of Web semantic for e-customer profile","authors":"Irene S. Y. Kwan","doi":"10.1109/DEXA.2002.1045886","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045886","url":null,"abstract":"e-Business is competing in the new era of e-market. We need an infrastructure that could provide insight information to enable maximum and constant learning that lead to a responsive Web site. To keep the Web site in business on-line, we need sufficient on-line traffic on the e-Business Web site. This result of an urgent need to investigate the keys to satisfy and stimuli e-customers by providing customer-effective Web sites that delivered business focused e-services. The primary need is to produces a view of the behavior of the e-business system and its e-customers. Successful e-Business aim to provide customers with optimal on-line experience in e-business Web site that supports effective customer relationship from customer awareness, through exploration to purchase commitment. This paper focuses on modeling e-customer behavior by developing a Mental Cognitive (MC) Model for identifying the Web site semantics via the activities exercised by its e-customers. Our proposed MC Model also supports quantitative measure to abstract more rigorously the behavior of e-customers in support of Internet marketing.","PeriodicalId":254550,"journal":{"name":"Proceedings. 13th International Workshop on Database and Expert Systems Applications","volume":"23 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":"121748260","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
Persistent cache in a distributed search engine 分布式搜索引擎中的持久缓存
Proceedings. 13th International Workshop on Database and Expert Systems Applications Pub Date : 2002-09-02 DOI: 10.1109/DEXA.2002.1045876
N. Sato, M. Uehara, Y. Sakai, H. Mori
{"title":"Persistent cache in a distributed search engine","authors":"N. Sato, M. Uehara, Y. Sakai, H. Mori","doi":"10.1109/DEXA.2002.1045876","DOIUrl":"https://doi.org/10.1109/DEXA.2002.1045876","url":null,"abstract":"The Cooperative Search Engine (CSE) is a distributed search engine, which can update indexes in very short time for the purpose of fresh information retrieval in an intranet. In CSE, the retrieval performance is dependent on cache contents because communication delay occurs at retrieval time. On the other hand however, cache is invalidated as soon as indexes are updated. Therefore, we need persistent cache that can hold valid data before and after updating. In this paper, we describe the principle and evaluations of persistent cache.","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":"129240451","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
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