2014, Vol.45, No.3

Journal of Korean Library and Information Science Society 2023 KCI Impact Factor : 1.02

pISSN : 2466-2542
https://journal.kci.go.kr/liss

The Web is rich with various sources of information that go beyond the contents of documents, such as hyperlinks and manually classified directories of Web documents such as Yahoo. This research extends past fusion IR studies, which have repeatedly shown that combining multiple sources of evidence (i.e. fusion) can improve retrieval performance, by investigating the effects of combining three distinct retrieval approaches for Web IR: the text-based approach that leverages document texts, the link-based approach that leverages hyperlinks, and the classification-based approach that leverages Yahoo categories. Retrieval results of text-, link-, and classification-based methods were combined using variations of the linear combination formula to produce fusion results, which were compared to individual retrieval results using traditional retrieval evaluation metrics. Fusion results were also examined to ascertain the significance of overlap (i.e. the number of systems that retrieve a document) in fusion. The analysis of results suggests that the solution spaces of text-, link-, and classification-based retrieval methods are diverse enough for fusion to be beneficial while revealing important characteristics of the fusion environment, such as effects of system parameters and relationship between overlap, document ranking and relevance.

The goal of this study is to suggest the models for establishing and operating the collaborative repository for academic libraries by region in Korea. For this purpose, author analyzed the status of academic libraries by provinces and types, the collection space shortage of academic libraries, location and evaluation criteria of collaborative repository. And based on these analysis results, author proposed the basic principles, key functions and practices to accomplish, architectural scales of the collaborative repositories, transfer criteria and ownership model of library collection, desirable management and operation unit of the collaborative repository.

This study developed the subject guide by policy areas for advancement of policy information service, designed the system for constructing the policy-related resources, and tried to construct policy information resources on a trial basis. For the development and construction of policy areas subject guide, first, we divided the aggregated materials into top 9 types, and subdivided into 19 types. Second, we constructed the policy contents for subject guide service, based on BRM classification system which is functional classification of government. Third, a total of 6,305 were build in accordance with 133 BRM subject guide. As a result, it is said that the effectiveness of the policy subject guide developed by this study, were verified by constructing the experimental data.