Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853879
David Yang, W. Sung, S. Yiu, D. Cheung, Wai-Shing Ho, T. Lam, Sau-dan. Lee
Organization of a Web site is important to help users get the most out of the site. A good Web site should help visitors find the information they want easily. Visitors typically find information by searching for selected terms of interest or by following links from one Web page to another. The first approach is more useful if the visitor knows exactly what he is seeking, while the second approach is useful when the visitor has less of a preconceived notion about what he wants. The organization of a Web site is especially important in the latter case. Traditionally, Web site organization is done by hand. In this paper, we introduce the problem of automatic Web site construction and propose a solution for solving a major step of the problem based on decision tree algorithms. The solution is found to be useful in automatic construction of product catalogs.
{"title":"Construction of online catalog topologies using decision trees","authors":"David Yang, W. Sung, S. Yiu, D. Cheung, Wai-Shing Ho, T. Lam, Sau-dan. Lee","doi":"10.1109/WECWIS.2000.853879","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853879","url":null,"abstract":"Organization of a Web site is important to help users get the most out of the site. A good Web site should help visitors find the information they want easily. Visitors typically find information by searching for selected terms of interest or by following links from one Web page to another. The first approach is more useful if the visitor knows exactly what he is seeking, while the second approach is useful when the visitor has less of a preconceived notion about what he wants. The organization of a Web site is especially important in the latter case. Traditionally, Web site organization is done by hand. In this paper, we introduce the problem of automatic Web site construction and propose a solution for solving a major step of the problem based on decision tree algorithms. The solution is found to be useful in automatic construction of product catalogs.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127368549","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853863
Harumi A. Kuno
Hewlett Packard has presented an E-Service vision for electronic commerce in which a rich array of nimble modular electronic services (e-Services) are accessible by virtually anyone and any device. We survey current efforts to meet the technical challenges presented by E-Services. We discuss what differentiates E-Services from today's applications, and what new requirements these differences present. We summarize the efforts of major vendors who seem to be reaching for the E-Service vision, and then compare and contrast the functionality, characteristics, and limitations of those vendors' products.
{"title":"Surveying the E-Services technical landscape","authors":"Harumi A. Kuno","doi":"10.1109/WECWIS.2000.853863","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853863","url":null,"abstract":"Hewlett Packard has presented an E-Service vision for electronic commerce in which a rich array of nimble modular electronic services (e-Services) are accessible by virtually anyone and any device. We survey current efforts to meet the technical challenges presented by E-Services. We discuss what differentiates E-Services from today's applications, and what new requirements these differences present. We summarize the efforts of major vendors who seem to be reaching for the E-Service vision, and then compare and contrast the functionality, characteristics, and limitations of those vendors' products.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126288769","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853857
Maria R. Lee
E-negotiation, where multiple parties are involved, needs to exchange information for negotiation decision-making. However, the difficulties during the exchange communication are the inconsistency in the represented value and how to make the data interchange meaningful. This paper presents the use of semantic value as the unit of exchange and a context-agent to facilitate the exchange during e-negotiation. An XML framework is used to declare the values of the properties of the semantic values. Rule-based representation is also provided to give context information for the semantic value. An ontology server specifies the concepts or terminology mapping. The explicit representation of semantic value reduces errors and frees applications from being concerned with conversions. It also makes it possible to understand the impact of semantic changes to the data among different heterogeneous information systems.
{"title":"Context-dependent semantic values for E-negotiation","authors":"Maria R. Lee","doi":"10.1109/WECWIS.2000.853857","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853857","url":null,"abstract":"E-negotiation, where multiple parties are involved, needs to exchange information for negotiation decision-making. However, the difficulties during the exchange communication are the inconsistency in the represented value and how to make the data interchange meaningful. This paper presents the use of semantic value as the unit of exchange and a context-agent to facilitate the exchange during e-negotiation. An XML framework is used to declare the values of the properties of the semantic values. Rule-based representation is also provided to give context information for the semantic value. An ontology server specifies the concepts or terminology mapping. The explicit representation of semantic value reduces errors and frees applications from being concerned with conversions. It also makes it possible to understand the impact of semantic changes to the data among different heterogeneous information systems.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115533737","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853858
Aslihan Celik, Anindya Datta
We consider an information commerce environment where clients subscribe to information objects sent via a broadcast onto a shared network (e.g., wireless, LAN, the Internet). In this context, a client should only be able to access its objects of interest for its subscription period, and the security system used must not be easily broken. Existing systems fail to perform well with increased client loads. We propose a new system, Drop Groups, and show that it is scalable.
{"title":"A scalable approach for subscription-based information commerce","authors":"Aslihan Celik, Anindya Datta","doi":"10.1109/WECWIS.2000.853858","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853858","url":null,"abstract":"We consider an information commerce environment where clients subscribe to information objects sent via a broadcast onto a shared network (e.g., wireless, LAN, the Internet). In this context, a client should only be able to access its objects of interest for its subscription period, and the security system used must not be easily broken. Existing systems fail to perform well with increased client loads. We propose a new system, Drop Groups, and show that it is scalable.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121155756","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853871
Simon S. Y. Shim, J. Gao, Y. Wang
The Synchronized Multimedia Integration Language (SMIL) is a recommendation developed by the Synchronized Multimedia Working Group in the World Wide Web Consortium (W3C). SMIL is a simple and standard way to specify a timeline-based synchronized multimedia presentation over the Internet. It is a declarative authoring language based on the Extensible Markup Language (XML) to define language-specific data types and tags. Since it is based on XML, it can be included in XML-based catalogs and data interchange in order to provide multimedia presentations. Instead of using proprietary multimedia document types, SMIL elements are standard way to include them. We discuss different ways to include multimedia presentations in a Web-based catalog. We also describe a component-based SMIL player written in Java. Different components can be put together to create a multimedia player that can run on the major Web browsers as a Java applet.
{"title":"Multimedia presentation components in e-commerce","authors":"Simon S. Y. Shim, J. Gao, Y. Wang","doi":"10.1109/WECWIS.2000.853871","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853871","url":null,"abstract":"The Synchronized Multimedia Integration Language (SMIL) is a recommendation developed by the Synchronized Multimedia Working Group in the World Wide Web Consortium (W3C). SMIL is a simple and standard way to specify a timeline-based synchronized multimedia presentation over the Internet. It is a declarative authoring language based on the Extensible Markup Language (XML) to define language-specific data types and tags. Since it is based on XML, it can be included in XML-based catalogs and data interchange in order to provide multimedia presentations. Instead of using proprietary multimedia document types, SMIL elements are standard way to include them. We discuss different ways to include multimedia presentations in a Web-based catalog. We also describe a component-based SMIL player written in Java. Different components can be put together to create a multimedia player that can run on the major Web browsers as a Java applet.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124095665","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853861
Haifeng Yu, Amin Vahdat
An ultimate goal for modern Internet services is the development of scalable, high-performance, highly-available and fault-tolerant systems. Replication is an important approach to achieve this goal. However replication introduces the issue of consistency among replicas, which is further complicated by network partitions. Generally, higher consistency levels result in lower system availability in the presence of network partitions. Thus, there is a fundamental tradeoff between consistency and availability in building replicated Internet services. We argue that Internet services can benefit from dynamically choosing availability/consistency tradeoffs. With three consistency metrics, Unseen Writes, Uncommitted Writes and Staleness, we show how consistency can be meaningfully quantified for many Internet services. We present the design of the TACT (Tunable Availability and Consistency Tradeoffs) toolkit that allows Internet services to flexibly and dynamically choose their own availability/consistency, tradeoffs, enabling differentiated availability/consistency quality of service. Further TACT makes it possible for Internet services to dynamically trade consistency for performance.
{"title":"Building replicated Internet services using TACT: a toolkit for tunable availability and consistency tradeoffs","authors":"Haifeng Yu, Amin Vahdat","doi":"10.1109/WECWIS.2000.853861","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853861","url":null,"abstract":"An ultimate goal for modern Internet services is the development of scalable, high-performance, highly-available and fault-tolerant systems. Replication is an important approach to achieve this goal. However replication introduces the issue of consistency among replicas, which is further complicated by network partitions. Generally, higher consistency levels result in lower system availability in the presence of network partitions. Thus, there is a fundamental tradeoff between consistency and availability in building replicated Internet services. We argue that Internet services can benefit from dynamically choosing availability/consistency tradeoffs. With three consistency metrics, Unseen Writes, Uncommitted Writes and Staleness, we show how consistency can be meaningfully quantified for many Internet services. We present the design of the TACT (Tunable Availability and Consistency Tradeoffs) toolkit that allows Internet services to flexibly and dynamically choose their own availability/consistency, tradeoffs, enabling differentiated availability/consistency quality of service. Further TACT makes it possible for Internet services to dynamically trade consistency for performance.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128527208","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853869
Chuang-Hue Moh, Ee-Peng Lim, W. Ng
XML documents are semi-structured and the structure of the documents is embedded in the tags. Although XML documents can be accompanied by a document type definition (DTD) that defines the structure of the documents, the presence of a DTD is not mandatory. The difficulty in deriving the DTD for XML documents lies in the fact that DTDs are of a different syntax from XML and that prior knowledge of the structure of the documents is required. In this paper, we introduce DTD-Miner, an automatic structure mining tool for XML documents. Using a Web-based interface, the user is able to submit a set of similarly structured XML documents and the system automatically suggests a DTD. The user is also able to further refine the DTD generated to reduce the complexity by relaxing some the rules used in the system.
{"title":"DTD-Miner: a tool for mining DTD from XML documents","authors":"Chuang-Hue Moh, Ee-Peng Lim, W. Ng","doi":"10.1109/WECWIS.2000.853869","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853869","url":null,"abstract":"XML documents are semi-structured and the structure of the documents is embedded in the tags. Although XML documents can be accompanied by a document type definition (DTD) that defines the structure of the documents, the presence of a DTD is not mandatory. The difficulty in deriving the DTD for XML documents lies in the fact that DTDs are of a different syntax from XML and that prior knowledge of the structure of the documents is required. In this paper, we introduce DTD-Miner, an automatic structure mining tool for XML documents. Using a Web-based interface, the user is able to submit a set of similarly structured XML documents and the system automatically suggests a DTD. The user is also able to further refine the DTD generated to reduce the complexity by relaxing some the rules used in the system.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115414790","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853872
Wagner Meira Jr, D. Menascé, Virgílio A. F. Almeida, Rodrigo Fonseca
In order to meet the quality of service demanded by a growing number of online customers, e-commerce services need to use scalability techniques. This paper introduces the concept of e-commerce representatives, a means of scaling the performance of e-commerce services. E-representatives are programs that execute on a cache server or at nearby machines. E-representatives can be implemented using redirection, a mechanism available in popular cache servers. Using analytical and simulation models, we show the potential performance gains obtained by e-commerce sites that distribute their services among e-representatives and contribute to reduce bandwidth consumption and network latency.
{"title":"E-representative: a scalability scheme for e-commerce","authors":"Wagner Meira Jr, D. Menascé, Virgílio A. F. Almeida, Rodrigo Fonseca","doi":"10.1109/WECWIS.2000.853872","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853872","url":null,"abstract":"In order to meet the quality of service demanded by a growing number of online customers, e-commerce services need to use scalability techniques. This paper introduces the concept of e-commerce representatives, a means of scaling the performance of e-commerce services. E-representatives are programs that execute on a cache server or at nearby machines. E-representatives can be implemented using redirection, a mechanism available in popular cache servers. Using analytical and simulation models, we show the potential performance gains obtained by e-commerce sites that distribute their services among e-representatives and contribute to reduce bandwidth consumption and network latency.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115569954","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853865
A. Schade, C. Facciorusso, S. Field, Y. Hoffner
Match-making in virtual markets and trading in distributed systems are similar activities, aiming at evaluating a client constraint against a set of available service offers, described in terms of properties. Virtual market systems, however need elaborate schemes for keeping certain property values dynamically updated. Dynamic property updates can be supported by using the dynamic property concept of the CORBA trading service. Specifying, executing and managing the algorithms used to compute the values of the dynamic properties, however, is outside the scope of the related CORBA standard. This paper presents the concept and the implementation of a generic engine which can be used to create, edit, manage and execute dynamic property evaluation algorithms. This approach brings about a number of benefits: an improved development environment, a simulation test-bed, improved management and maintenance capability, and a structured way of linking the trading service to legacy systems. The resulting system has been used extensively as part of the ViMP (Virtual MarketPlace) set of development tools to create a number of dynamic virtual markets.
{"title":"Advanced dynamic property evaluation for CORBA-based electronic markets","authors":"A. Schade, C. Facciorusso, S. Field, Y. Hoffner","doi":"10.1109/WECWIS.2000.853865","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853865","url":null,"abstract":"Match-making in virtual markets and trading in distributed systems are similar activities, aiming at evaluating a client constraint against a set of available service offers, described in terms of properties. Virtual market systems, however need elaborate schemes for keeping certain property values dynamically updated. Dynamic property updates can be supported by using the dynamic property concept of the CORBA trading service. Specifying, executing and managing the algorithms used to compute the values of the dynamic properties, however, is outside the scope of the related CORBA standard. This paper presents the concept and the implementation of a generic engine which can be used to create, edit, manage and execute dynamic property evaluation algorithms. This approach brings about a number of benefits: an improved development environment, a simulation test-bed, improved management and maintenance capability, and a structured way of linking the trading service to legacy systems. The resulting system has been used extensively as part of the ViMP (Virtual MarketPlace) set of development tools to create a number of dynamic virtual markets.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127197575","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}
Pub Date : 2000-06-08DOI: 10.1109/WECWIS.2000.853875
E. Kafeza, K. Karlapalem
CapBasED-AMS is a capability based and event driven activity management system that supports specification and execution of activities using the cooperative information systems paradigm. In CapBasED, an activity consists of interdependent tasks (atomic activities) that are executed by an agent. When there are many activity instances executing at the same time many tasks are queued up at agents for execution. In this paper, we propose a multi-agent system model, introduce a measurement of speed-up/slow-down, and develop different scheduling policies that allow for faster executions based on user's requests. Our scheduling framework is developed under the assumption that there are no additional resources for speeding-up the activities and it is based on re-scheduling activities in agent's queues.
{"title":"Speeding up electronic commerce activities using CapBasED-AMS","authors":"E. Kafeza, K. Karlapalem","doi":"10.1109/WECWIS.2000.853875","DOIUrl":"https://doi.org/10.1109/WECWIS.2000.853875","url":null,"abstract":"CapBasED-AMS is a capability based and event driven activity management system that supports specification and execution of activities using the cooperative information systems paradigm. In CapBasED, an activity consists of interdependent tasks (atomic activities) that are executed by an agent. When there are many activity instances executing at the same time many tasks are queued up at agents for execution. In this paper, we propose a multi-agent system model, introduce a measurement of speed-up/slow-down, and develop different scheduling policies that allow for faster executions based on user's requests. Our scheduling framework is developed under the assumption that there are no additional resources for speeding-up the activities and it is based on re-scheduling activities in agent's queues.","PeriodicalId":340737,"journal":{"name":"Proceedings Second International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems. WECWIS 2000","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116382115","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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