Conclusion
The empirical study reported in this paper indicates that progress has been made in terms of increasing search success by improving the OPAC search interface. The goal is to design Web-based OPAC systems for today’s users who are likely to bring a mental model of Web search engines to the library catalog. Web-based OPACs and Web search engines differ in terms of their systems and interface design. However, in most cases, these differences do not result in different search characteristics by users. Research findings on the impact of Web search engines and user searching expectations and behavior should be adequately utilized to guide the interface design. Web users typically do not know how a search engine works. Therefore, fundamental features in the design of the next generation of the OPAC interface should include changing the search to allow natural-language searching with keyword search first, and focus on meeting the quick-search need. Such a concept-based search will allow users to enter natural language of their chosen topic in the search box while the system maps the query to the structure and content of the database. Relevance feedback to allow the system to bring back related pages, spelling correction, and relevance-ranked output remain key goals for future OPACs.
ConclusionThe empirical study reported in this paper indicates that progress has been made in terms of increasing search success by improving the OPAC search interface. The goal is to design Web-based OPAC systems for today’s users who are likely to bring a mental model of Web search engines to the library catalog. Web-based OPACs and Web search engines differ in terms of their systems and interface design. However, in most cases, these differences do not result in different search characteristics by users. Research findings on the impact of Web search engines and user searching expectations and behavior should be adequately utilized to guide the interface design. Web users typically do not know how a search engine works. Therefore, fundamental features in the design of the next generation of the OPAC interface should include changing the search to allow natural-language searching with keyword search first, and focus on meeting the quick-search need. Such a concept-based search will allow users to enter natural language of their chosen topic in the search box while the system maps the query to the structure and content of the database. Relevance feedback to allow the system to bring back related pages, spelling correction, and relevance-ranked output remain key goals for future OPACs.
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