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Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)最新文献

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The R/sub a/*-tree: an improved R*-tree with materialized data for supporting range queries on OLAP-data R/sub a/*-tree:一个改进的R*-tree，它具有物化数据，支持对olap数据的范围查询
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707401
M. Jürgens, H. Lenz
{"title":"The R/sub a/*-tree: an improved R*-tree with materialized data for supporting range queries on OLAP-data","authors":"M. Jürgens, H. Lenz","doi":"10.1109/DEXA.1998.707401","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707401","url":null,"abstract":"OLAP applications make use of fast indexes and materialization of data. Most research treats just one topic. Either the materialized values or the design of index structures are considered. The paper examines a possible combination of both techniques. The R* tree is taken as an example of a multidimensional index structure. Aggregated data is stored in the inner nodes of the index structure in addition to the references to the successor nodes. We describe how this mechanism works in detail and present results of performance evaluation.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121501509","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: 61
Multimedia data mining and its implications for query processing 多媒体数据挖掘及其对查询处理的影响
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707386
W. Grosky, Y. Tao
{"title":"Multimedia data mining and its implications for query processing","authors":"W. Grosky, Y. Tao","doi":"10.1109/DEXA.1998.707386","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707386","url":null,"abstract":"The paper addresses the area of multimedia data mining, in which non relational architectures certainly predominate and in which there are many attributes-for example, various image features-which are not directly visible to the user. Just what is multimedia data mining? The answer isn't obvious due to the nature of the data being managed. We identify and categorize the many faces of multimedia data mining. We also discuss a representation scheme for multimedia objects, which lends itself to multimedia data mining.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125298663","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
New object models for seamless transition across heterogeneous mobile environments 跨异构移动环境无缝转换的新对象模型
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707438
A. Pasala, D. Ram
{"title":"New object models for seamless transition across heterogeneous mobile environments","authors":"A. Pasala, D. Ram","doi":"10.1109/DEXA.1998.707438","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707438","url":null,"abstract":"In mobile collaborative applications, collaborators may move across heterogeneous environments. This paper proposes object models for seamless transition of collaborators across heterogeneous environments. This is achieved by framing the various limitations of the environment as constraints and abstracting them into a constraint meta-object. Collaborator objects are dynamically customized by attaching the appropriate constraint meta-object based on the environment in which the collaborators are working. Remote customization of objects is achieved by 'distributed glue model'.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122454445","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
Dynamic document delivery: generating natural language texts on demand 动态文档交付:按需生成自然语言文本
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707392
R. Dale, Stephen Joseph Green, Maria Milosavljevic, Cécile Paris, Karin M. Verspoor, Sandra Williams
{"title":"Dynamic document delivery: generating natural language texts on demand","authors":"R. Dale, Stephen Joseph Green, Maria Milosavljevic, Cécile Paris, Karin M. Verspoor, Sandra Williams","doi":"10.1109/DEXA.1998.707392","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707392","url":null,"abstract":"Research in natural language generation promises significant advances in the ways in which we can make available the contents of underlying information sources. Most work in the field relies on the existence of carefully constructed artificial intelligence knowledge bases; however the reality is that most information currently stored on computers is not represented in this format. We describe some work in progress where we attempt to generate large numbers of texts automatically from existing underlying databases. We focus in particular on the automatic generation of descriptions of objects stored in a museum database, highlighting the difficulties that arise in using a real data source, and pointing to some possible solutions.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131159039","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: 29
Data mining: a tightly-coupled implementation on a parallel database server 数据挖掘:在并行数据库服务器上的紧密耦合实现
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707486
M. Sousa, M. Mattoso, N. Ebecken
{"title":"Data mining: a tightly-coupled implementation on a parallel database server","authors":"M. Sousa, M. Mattoso, N. Ebecken","doi":"10.1109/DEXA.1998.707486","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707486","url":null,"abstract":"Due to the increasingly difficulty of discovering patterns in real-world databases using only conventional OLAP tools, an automated process such as data mining is currently essential. As data mining over large data sets can take a prohibitive amount of time related to the computational complexity of the algorithms, parallel processing has often been used as a solution. However, when data does not fit in memory, some solutions do not apply and a database system may be required rather than flat files. Most implementations use a database system loosely-coupled with the data mining algorithms. We address the data consuming activities through parallel processing and data fragmentation on the database server, providing a tight integration with data mining techniques. Experimental results show that the potential benefits of this integration were obtained, despite the difficulties of processing a complex application.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131814153","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
A case for parallelism in data warehousing and OLAP 数据仓库和OLAP中的并行性案例
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707407
Anindya Datta, Bongki Moon, Helen M. Thomas
{"title":"A case for parallelism in data warehousing and OLAP","authors":"Anindya Datta, Bongki Moon, Helen M. Thomas","doi":"10.1109/DEXA.1998.707407","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707407","url":null,"abstract":"In recent years the database community has experienced a tremendous increase in the availability of new technologies to support efficient storage and retrieval of large volumes of data, namely data warehousing and On-Line Analytical Processing (OLAP) products. Efficient query processing is critical in such an environment, yet achieving quick response times with OLAP queries is still largely an open issue. We propose a solution approach to this problem by applying parallel processing techniques to a warehouse environment. We suggest an efficient partitioning strategy based on the relational representation of a data warehouse (i.e., star schema). Furthermore, we incorporate a particular indexing strategy, DataIndexes, to further improve query processing times and parallel resource utilization, and propose a preliminary parallel star-join strategy.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115174196","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: 58
Design and implementation of the Relationlog deductive database system 关系演绎数据库系统的设计与实现
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707505
Mengchi Liu, Riqiang Shan
{"title":"Design and implementation of the Relationlog deductive database system","authors":"Mengchi Liu, Riqiang Shan","doi":"10.1109/DEXA.1998.707505","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707505","url":null,"abstract":"We describe the design and implementation of Relationlog, a persistent deductive database system. Unlike other related systems such as Aditi, CORAL, LDL, LOLA and Glue-Nail, Relationlog supports effective storage, efficient access and inference of large amounts of data with complex structures and provides a declarative query language that can define recursive views involving complex data and also a declarative data manipulation language to update databases.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114261799","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
Dynamic aspects of the InfoPriv model for information privacy 信息隐私的InfoPriv模型的动态方面
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707422
Lucas C. J. Dreyer, M. Olivier
{"title":"Dynamic aspects of the InfoPriv model for information privacy","authors":"Lucas C. J. Dreyer, M. Olivier","doi":"10.1109/DEXA.1998.707422","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707422","url":null,"abstract":"This paper describes the dynamic aspects of the InfoPriv model for privacy. The dynamic aspects are concerned with the actual information flow as well as the change of the privacy policy over time. An information can-flow graph represents the potential information flow between entities, thereby describing only the static aspects of InfoPriv. The dynamic aspects are divided into two categories: dynamic information flow and the evolution of the static aspects. \"Dynamic information flow\" refers to the simulation of the actual information flow as it occurs over time. Information flow is, therefore, permitted or denied based on the past information flow of a system. The \"evolution of the static aspects\" refers to the change of the privacy policy over time. For instance, it is necessary to give entities access to more information during their lifetime. An algorithm is presented that extends the can-flow graph without introducing unauthorised information flow.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114500368","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
Towards a comprehensive integration of subjective parameters in database browsing 在数据库浏览中实现主观参数的全面集成
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707507
N. Bianchi-Berthouze, L. Berthouze, Toshikazu Kato
{"title":"Towards a comprehensive integration of subjective parameters in database browsing","authors":"N. Bianchi-Berthouze, L. Berthouze, Toshikazu Kato","doi":"10.1109/DEXA.1998.707507","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707507","url":null,"abstract":"Today, cyberspace provides the user with quantities of distributed multimedia information. Whereas adequate technical tools were developed that enable the user to actually access this database, information technology still lacks plasticity to handle requests based on subjective parameters, i.e. non-explicit requests. In human-human communication however, such complex and variable information can be transmitted by words, even if the meaning associated varies from one actor to the other. We propose an experimental framework in which, through intensive interaction, the machine and the user develop a common language through which they can establish mutual understanding over visual perceptions. We describe the mechanisms underlying the development of this language and which allow the user to have full control, both functionally and structurally of the system.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115920820","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 FRAMES processing model for the synthesis of dynamic virtual video sequences 动态虚拟视频序列合成的FRAMES处理模型
Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130) Pub Date : 1998-08-26 DOI: 10.1109/DEXA.1998.707390
C. Lindley
{"title":"The FRAMES processing model for the synthesis of dynamic virtual video sequences","authors":"C. Lindley","doi":"10.1109/DEXA.1998.707390","DOIUrl":"https://doi.org/10.1109/DEXA.1998.707390","url":null,"abstract":"The FRAMES project within the RDN CRC (Cooperative Research Centre for Research Data Networks) is developing an experimental environment for video content based retrieval and dynamic virtual video synthesis from archives of video data. The paper describes the FRAMES dynamic virtual video synthesis process. The generation of dynamic virtual videos is based upon content descriptions of archived material, together with a specification of the videos that are to be created. Several different types of queries that refer to semantic features can be embedded within a specification; the execution of these queries determines the specific video content that will be displayed. The paper begins by describing the semantic descriptions that FRAMES uses, based upon a multi level model of video semantics. The paper then describes the query types and associated execution processes used to generate dynamic virtual videos based upon prescriptions and content descriptions.","PeriodicalId":194923,"journal":{"name":"Proceedings Ninth International Workshop on Database and Expert Systems Applications (Cat. No.98EX130)","volume":"11 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116068893","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
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