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

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Logistic regression modeling for context-based classification 基于上下文分类的逻辑回归建模
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795279
J. Brzezinski, G. Knafl
{"title":"Logistic regression modeling for context-based classification","authors":"J. Brzezinski, G. Knafl","doi":"10.1109/DEXA.1999.795279","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795279","url":null,"abstract":"We focus on a machine learning approach to the concept/document classification for IR. We apply a logistic regression-based algorithm to three types of classification tasks: binary classification, multiple classification and classification into a hierarchy. At this stage, for our experiments we use a set of 150 topics from the TIPSTER collection. We develop heuristics as to how to build a logistic regression model for high dimensional, sparse data sets. This research describes work in progress.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"29 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":"128718386","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: 36
Locating Web information using Web checkpoints 使用Web检查点定位Web信息
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795272
A.-K. Luah, W. Ng, Ee-Peng Lim, W.-P. Lee, Yinyan Cao
{"title":"Locating Web information using Web checkpoints","authors":"A.-K. Luah, W. Ng, Ee-Peng Lim, W.-P. Lee, Yinyan Cao","doi":"10.1109/DEXA.1999.795272","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795272","url":null,"abstract":"Conventional search engines locate information by letting users establish a single Web checkpoint. By specifying one or more keywords, users direct search engines to return a set of documents that contain those keywords. From the documents (links) returned by search engines, user proceed to further probe the WWW from there. Hence, these initial set of documents (contingent upon the occurrence of keyword(s)) serve as a Web checkpoint. Generally, these links are numerous and may not result in much fruitful searches. By establishing multiple Web checkpoints, a richer and controllable search procedure can be constructed to obtain more relevant Web information. This paper presents the design and implementation of permitting multiple checkpoints to facilitate improved searching on the WWW. Web checkpointing is performed as part of the WHOWEDA project.","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":"129547387","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
Similarity search through fuzzy relational algebra 基于模糊关系代数的相似性搜索
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795172
D. Montesi, Alberto Trombetta
{"title":"Similarity search through fuzzy relational algebra","authors":"D. Montesi, Alberto Trombetta","doi":"10.1109/DEXA.1999.795172","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795172","url":null,"abstract":"Multimedia informations systems and Web-based applications such as search engines need to automatically extract and classify multimedia data such as images and textual documents. For this reason, very significant research has focused on similarity queries from the standpoint of the definition and creation of appropriate index structures. We provide a formal framework in which formulate powerful similarity-based queries. For this purposes a fuzzy relational algebra extending the classical relational algebra is defined and equivalence and containment rules for query processing are given.","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":"124416709","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
Windsurf: region-based image retrieval using wavelets Windsurf:基于小波的区域图像检索
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795161
Stefania Ardizzoni, Ilaria Bartolini, M. Patella
{"title":"Windsurf: region-based image retrieval using wavelets","authors":"Stefania Ardizzoni, Ilaria Bartolini, M. Patella","doi":"10.1109/DEXA.1999.795161","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795161","url":null,"abstract":"In this paper we present WINDSURF (Wavelet-Based Indexing of Images Using Region Fragmentation), a new approach to content-based image retrieval. The method uses the wavelet transform to extract color and texture features from an image and applies a clustering technique to partition the image into a set of \"homogeneous\" regions. Similarity between images is assessed by using the Bhattacharyya distance to compare region descriptors, and then combining the results at image level. Experimental results on a testbed of 10000 general-purpose images show that our approach is very effective in retrieving images that are \"semantically\" similar to the query image. In particular, we compared results of WINDSURF with the approach by Stricker and Orengo, showing that that a significant improvement is obtained in the quality of the result.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"94 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":"126419105","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: 124
The management of business transactions through electronic contracts 通过电子合同管理商业交易
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795289
Alexander Runge, Bernd Schopp, K. Stanoevska-Slabeva
{"title":"The management of business transactions through electronic contracts","authors":"Alexander Runge, Bernd Schopp, K. Stanoevska-Slabeva","doi":"10.1109/DEXA.1999.795289","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795289","url":null,"abstract":"Based on a Business Media Framework (BMF) as an instantiation of a new media reference model, the paper provides a solution for the integrated management of business transactions, considering contracts as the key information of all legally relevant actions in a business transaction. Derived from these concepts and assumptions, a contracting framework is presented that gives an overview of the services and roles that have to be fulfilled in a business transaction to manage the flow of information. Finally, a container architecture as an instantiation of a market transaction managing entity is presented, described and embedded into the BMF. The concept provided in the paper was developed within the Secure Electronic Contracts (SeCo) project at the =mcm Institute at the University of St. Gallen and the University of Zurich in Switzerland (M. Gisler et al., 1999). The focus of the project is to merge business requirements on electronic contracting with IT security requirements and legal aspects. The paper mainly covers a contracting framework that meets business requirements on electronic contracting in business media.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"54 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":"127346881","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: 24
Document analysis techniques for the infinite memory multifunction machine 无限存储多功能机的文件分析技术
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795246
J. Hull, Dar-Shyang Lee, J. Cullen, P. Hart
{"title":"Document analysis techniques for the infinite memory multifunction machine","authors":"J. Hull, Dar-Shyang Lee, J. Cullen, P. Hart","doi":"10.1109/DEXA.1999.795246","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795246","url":null,"abstract":"A system that saves a digital copy of every document that users copy, print, or fax, without asking the user, has recently been proposed. Referred to as the Infinite Memory Multifunction Machine (IM/sup 3/), this system solves most of the problem of lost documents. However, because of the indiscriminate way it captures data, it is important that users have easy-to-use retrieval tools. Two document analysis techniques are described that simplify retrieval from large collections like the IM/sup 3/. One technique detects duplicates or versions of a document. Another method automatically files a document in a hierarchy familiar to a user. Experimental results are presented that illustrate the performance of each method.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"30 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":"133198674","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
Multimedia prefetching strategy for news-on-demand applications 面向新闻点播应用的多媒体预取策略
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795119
A. Mostefaoui, L. Brunie
{"title":"Multimedia prefetching strategy for news-on-demand applications","authors":"A. Mostefaoui, L. Brunie","doi":"10.1109/DEXA.1999.795119","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795119","url":null,"abstract":"In video databases, a video document has two abstractions. The high level abstraction corresponds to the view in which the contents of that video document are seen by end users. And the low level abstraction corresponds to the physical organization of that video document. We propose a novel prefetching strategy that merges the two views of a video document to trigger prefetching at the video server level. We focus on the impact of the high level view on the proposed prefetching technique. Specifically, we study the behavior of the prefetching technique under different typologies of the video database contents. The simulation experiments show an improvement of between 10% and 23%.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"22 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":"116831049","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: 2
A study on utilizing OCR technology in building text database 利用OCR技术建立文本数据库的研究
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795250
S. Hahn, J. Lee, J. H. Kim
{"title":"A study on utilizing OCR technology in building text database","authors":"S. Hahn, J. Lee, J. H. Kim","doi":"10.1109/DEXA.1999.795250","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795250","url":null,"abstract":"Optical character recognition (OCR) might be the most plausible method in building databases from printed documents. The paper describes the points to be considered when one selects an OCR system in order to build a database. Based on our experiments on four commercial OCR systems, we chose one that shows the highest recognition rate to build an OCR text database. The character recognition rate was 90.5% over 970 abstracts of conference proceedings in Korean. This recognition rate is still insufficient for practical use. For practical use of the OCR texts which has approximately 10% of character-level errors, we need to investigate whether automatic indexing generates acceptable retrieval performance. In addition, it is necessary to evaluate which indexing method results in better performance. Experimental results show that 2-gram indexing provides similar retrieval efficiency to morpheme based indexing for the Korean OCR text database. In addition, the retrieved results of the indexed OCR texts are similar to those selected by experts.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"74 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":"116967305","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
Desktop scene analysis for document management system 桌面场景分析文件管理系统
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795243
T. Kawashima, Tadakatu Nakagawa, T. Miyazaki, Y. Aoki
{"title":"Desktop scene analysis for document management system","authors":"T. Kawashima, Tadakatu Nakagawa, T. Miyazaki, Y. Aoki","doi":"10.1109/DEXA.1999.795243","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795243","url":null,"abstract":"In this report, we propose a method to support human intellectual activity by managing the history of document information on a desktop environment. Recently, many research groups have been focused on \"desk\" as an interactive environment in which projective display and user's action can share the same physical space. Although our experimental setup is similar to these researches, our aim differs from their approach in the point that we limit the target to documents placed on a desktop to monitor the thinking process of a user from appearance. The system recognizes documents, folders, and stacks and their layout from a TV camera located above desk, and it also recognizes the motion of user's hands to estimate the action. We indicate that the system can consistently manage personal documents even if they are cluttered on the desk.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"106 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":"115559866","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
A Web-based evolutionary model for Internet data caching 基于web的Internet数据缓存进化模型
Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99 Pub Date : 1999-09-01 DOI: 10.1109/DEXA.1999.795261
A. Vakali
{"title":"A Web-based evolutionary model for Internet data caching","authors":"A. Vakali","doi":"10.1109/DEXA.1999.795261","DOIUrl":"https://doi.org/10.1109/DEXA.1999.795261","url":null,"abstract":"Caching is a standard solution to the problem of insufficient bandwidth caused by the rapid increase of information circulation across the Internet. Cache consistency mechanisms are a crucial component of each cache scheme influencing the cache usefulness and reliability. The paper presents a model for optimizing Internet cache content by the use of a genetic algorithm and examines the model by trace-driven experiments. Cached data are considered as a population evolving over simulated time by a number of successive cache \"generations\". The model is tested by the use of traces provided by a Squid proxy cache server. Using trace-driven caching, we show that the proposed evolutionary mechanisms improve cache nonstaleness and consistency and result in an updated cache content.","PeriodicalId":276867,"journal":{"name":"Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99","volume":"69 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":"115661881","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: 15
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