B. Schmitt, and A. Schmidt. METALICA: An Enhanced Meta Search Engine for Literature Catalogs. In Proceedings of the 2nd Asian Digital Library Conference, Taipei, 1999.  @ NUS  Home/Search   Document Details and Download   Summary   Related Articles   Check

....three customer interfaces: a Web interface, a graphical user interface based on Java Swing, and a 3D virtual reality environment showing the interior and exterior of the university library in Karlsruhe. Customer Agents. Customer agents act as representatives of the customers to the system [24]. Same as customer interface agents, it is neither necessary nor desirable that each customer has a private customer agent, since a customer agent can serve several customers at the same time. There is no direct contact to the customer. So the customer agent does not have to worry about how to ....

B. Schmitt, and A. Schmidt. METALICA: An Enhanced Meta Search Engine for Literature Catalogs. In Proceedings of the 2nd Asian Digital Library Conference, Taipei, 1999.

....library systems, namely TSIMMIS, Garlic and Information Manifold. The TSIMMIS successor MIX [3] employs XML for data exchange between the mediator and the wrapper. Another focus is on the integration of noncooperative providers, especially those offering Web interfaces. The Unicats project [23] integrates digital libraries offering public HTTP interfaces. Other approaches include WebJDBC [20] and techniques for wrapper generation introduced in [2] TSIMMIS, Information Manifold and Garlic focus on this approach to some extent, too. We consider Z39.50 sources as especially important in ....

B. Schmitt and A. Schmidt. METALICA: An Enhanced Meta Search Engine for Literature Catalogs. In Proceedings of the 2nd Asian Digital Library Conference (ADL'99). Taipei, November 1999.

....Some of the above mentioned systems were used in or developed in conjunction with integrated digital library systems, namely TSIMMIS, Garlic and Information Manifold. Another focus is on the integration of noncooperative providers, especially those offering Web interfaces. The Unicats project [SS99] integrates digital libraries offering public HTTP interfaces. Other approaches include WebJDBC and techniques for wrapper generation introduced in [SH99] TSIMMIS, Information Manifold and Garlic also focus on this approach to some extent. The description of query capabilities for sources and ....

B. Schmitt and A. Schmidt. METALICA: An Enhanced Meta Search Engine for Literature Catalogs. In Proceedings of the 2nd Asian Digital Library Conference (ADL'99), Taipei, November 1999.

....ranked recommendations for a series of providers, and additional communications between the participating agents. Figure 10: the 3D virtual reality interface of the UniCats system We cannot set out the functionality of the user agent and the wrapper in this paper. Please refer to Schmitt and Schmitt (1999) and Pulkowski (1999) for more information. We laid stress on low requirements of our system, which is a precondition for a system that satisfies an open market. Agents can be installed easily anywhere in the Internet, providers can be connected without having to install a new interface, and the ....

B. Schmitt and A. Schmidt. METALICA: An Enhanced Meta Search Engine for Literature Catalogs. In: Proceedings of the 2nd Asian Digital Library Conference, Taipei, Taiwan, 1999.

....systems either provide little integration or perform quite slow. For instance, KVK [1] and Daffodil [2] present only first parts of the results and leave the collection of additional information to the user who has to expand a lot of links, manually. On the other hand, our first UniCats prototypes [3] and [4] presented the results with all available information but performed rather slow. Thus, the current aim of our UniCats approach is to investigate in appropriate concepts and techniques for running both fast and comprehensive meta search systems. Therefore, we developed SIMPSON: a ....

Schmitt, B., Schmidt, A.: METALICA: An Enhanced Meta Search Engine for Literature Catalogs. In: Proc. of the 2nd Asian Digital Library Conference, p. 142-160, Taipei, 1999.

....service. This becomes a serious problem especially in meta search systems which tend to retrieve a huge number of documents. We address these and related problems in our UniCats project [2] Its aim is also the integration of existing literature services. By developing a rapid prototype [3] we gained first experiences and identified the main difficulties and challenges: Information overflow: Within meta search systems result sets become indeed quite large. One possibility to support exploration and handling of large result sets is to offer interactive mechanisms for duplicate ....

....possibilities for planning a query and executing the necessary Web requests, the proposed approach introduces an evaluation component for measuring and comparing the performance of different query strategies. For further information on result integration and result presentation please refer to [3]. Fig. 2. Modules of the User Agent (T: Trader, W: Wrapper) 2.1 Generic Search Strategies Recent user studies like [8] and [9] show that even advanced users within the area of computer science only use two to three query terms to specify their information need. Thus, this approach is based on ....

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Schmitt, B., Schmidt, A.: METALICA: An Enhanced Meta Search Engine for Literature Catalogs. In: Proc. of the 2nd Asian Digital Library Conference, p. 142-160, Taipei, 1999.

....to the integration algorithms. For instance, if a document has already been shown to the customer and the user agent receives new informations about it (e.g. an abstract) the user agent has to add this information in the displayed entry. Details of the integration process can be found in [14] 6. Related Work Meta search engines offer a uniform interface for the access to catalogues. For example, the Karlsruher Virtueller Katalog [7] provides access to a great number of national and international catalogues. However, it provides neither post processing operations such as duplicate ....

Schmitt, B., Schmidt, A. METALICA: An Enhanced Meta Search Engine for Literature Catalogs. In Proceedings of the 2nd Asian Digital Library Conference (ADL'99), Taipei, 1999.

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