Ahmadreza Ahmadi Mirghaed; Maryam Khodabin; Mitra Samiei
Abstract
The purpose of this study is to use ontologies in the information retrieval of digital collections with an emphasis on images. The present research is of applied type and has been done by library method and systematic review of resources with an analytical approach. Using this method, the sources were ...
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The purpose of this study is to use ontologies in the information retrieval of digital collections with an emphasis on images. The present research is of applied type and has been done by library method and systematic review of resources with an analytical approach. Using this method, the sources were collected around the research axis and selected for a more detailed review, and finally, the sources were reviewed according to specific and systematic instructions. In this method, all research in the field of ontology and its effect on image retrieval has been reviewed. The research findings show that image retrieval techniques, considering the backgrounds, include: text-based image retrieval, content-based image retrieval, composite model image retrieval, and semantic (conceptual) retrieval that used related feedback schemes to improve performance as well as the accuracy of the image retrieval process.Most of the researched studies have emphasized the necessity of using ontologies in digital collections. Therefore, in the current situation, we are moving towards the Semantic Web in order to organize digital images that deal with various structural and linguistic problems such as ambiguities, doubts, and human metaphors for the machine, and the use of ontologies. It is very effective in improving accessibility and retrieval accuracy.
Ahmad Reza Ahmadimirgaed; Reza Maleki; Esmat Momeni
Volume 2, Issue 4 , October 2015, , Pages 107-128
Abstract
Purpose: we aimed to assess the level of service quality in the central library science and culture using standard tools LibQual, examining the differences between users' expectations and the level of services received determined by the need to improve the service components and to prioritize the elements ...
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Purpose: we aimed to assess the level of service quality in the central library science and culture using standard tools LibQual, examining the differences between users' expectations and the level of services received determined by the need to improve the service components and to prioritize the elements of a list view of the library. This study assessed the quality of library services based on users' expectations on three levels: minimum, maximum estimated and analyzed. Methodology: The study population consisted of 2250 members of the Central Library, Science and Culture, including PhD students, graduate students, undergraduate students, faculty fellow members and employees. Given the sheer size and distribution of the study population, random stratified sampling was used. The sample of study includes 328 students. Findings: Our findings indicated that the influence of the level of service received, the Central Library of Science and Culture, with a mean (33/7) is more than the other dimensions. But the library as a place was not able to meet users' needs and their expectations and with a mean (58/3) to have the lowest level of service received. According to users' perspective, information control (07/60%), service work components (21/26%) and the component library as a place (72/13 percent) were the main important component, respectively. Conclusion: After testing the hypotheses, it was determined that in LibQual components there was a significant relationship between the users' highest and lowest expectations and the level service received. Also there was a significant difference among perspectives of PhD students, graduate students, undergraduate students, faculty fellow members and employees in the lowest expectations", "the highest expectations" and "received services". Finally, with the results obtained in the field and to improve the level of service quality in academic libraries, solutions and recommendations were presented.
