• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.13 no.4
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• pp.306-311
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• 2020

This paper deals with how to improve the performance of Python language with various libraries when developing a model using big data. The Python language uses the Pandas library for processing spreadsheet-format data such as Excel. In processing data, Python operates on an in-memory basis. There is no performance issue when processing small scale of data. However, performance issues occur when processing large scale of data. Therefore, this paper introduces a method for distributed processing of execution tasks in a single cluster and multiple clusters by using a Dask library that can be used with Pandas when processing data. The experiment compares the speed of processing a simple exponential model using only Pandas on the same specification hardware and the speed of processing using a dask together. This paper presents a method to develop a model by distributing a large scale of data by CPU cores in terms of performance while maintaining that python's advantage of using various libraries is easy.

• Journal of the Korea Society of Computer and Information
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• v.25 no.9
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• pp.1-9
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• 2020

In this paper, we propose a method of in-depth analysis of internal operation process by recording library calls and related information that occur in the operation process of NoSQL database. It observes and records the specified library calls, compares the internal behavior differences between the NoSQL databases through recorded library call information, and evaluates the characteristics and scalability of each database by observing changes in the number of input data. The development of computing performance and the activation of big data have led to the emergence of different types of NoSQL databases for recording and analyzing various and large amounts of data, and it is necessary to evaluate the scalability of each database in order to select a database suitable for each environment. However, it is difficult to analyze or predict how a database operates in traditional ways, such as benchmarking, observing external behavior through performance models, or analyzing structural features based on design. Therefore, it is necessary to utilize the techniques proposed in this paper to understand the scalability of NoSQL databases with high accuracy.

• Journal of KIISE:Software and Applications
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• v.29 no.1_2
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• pp.10-19
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• 2002

In searching and locating a collection of components on the Web, users require a Web browser. Since the Web libraries tend to grow rapidly, there needs to be an effective way to organize and manage such large libraries. Traditional Web-based library(retrieval) systems provide various classification scheme and retrieval services to store and retrieve components. However, these systems do not include invaluable services, for example, enabling users to grasp the overall contents of the library at the beginning of retrieval. This paper discusses a Web-based library system, which provides the efficient management of object-oriented components and a set of services beyond simple component store and retrieval. These services consist of component comprehension through a reverse engineering process, automated summary extraction, and comprehension-based retrieval. Also, The performance of an automated cluster-based classification scheme adopted on the system is evaluated and compared with the cluster-based classification scheme adopted on the system is evaluated and compared with the performance of two other systems using traditional classification scheme.

• Journal of the Korean Society for Library and Information Science
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• v.48 no.4
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• pp.241-266
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• 2014

The purpose of this study is to investigate the importance and validity of the unified policy of the administrative system for the public library through the analysis and evaluation of the outcomes and plans about the policy on the first and second Comprehensive Library Advancement Plan. In addition, this study seeks to the strategies for the public library administrative system unification by reviewing the issue details of the unification strategies. The first Comprehensive Library Advancement Plan was found to be just proclamatory without concrete and practical results through its performance analysis. The policy tasks were evaluated to lack in feasibility and specificity in the second Comprehensive Library Advancement Plan which was performed on a group of library professionals. Policy decision to determine who would be responsible for the unification into the local government was found to be valid by the results of previous research findings, policy evaluation by experts and in-depth interview survey for field practitioners. Substantial and detailed action-oriented strategy rather than bluffing and macro policy is necessary for the unification of the library administrative system. It is because we have found there exist significant issues in terms of unified approach, structure of the organization, personnel transfer and grade adjustment, property transfer, etc. through the analysis.

• Journal of Korean Library and Information Science Society
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• v.41 no.1
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• pp.255-272
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• 2010

This paper aims to describe the measurement and improvement of academic library service quality by ISA (Importance-Satisfaction Analysis). This research established service quality model on based LibQUAL+(R). It consisted of 18 items that formed three dimensions, affect of service quality, information control quality, and library as place quality. To execute this research, the service quality according the users' importance and satisfaction of library service is measured through Gaps model and ISA. The data for this case study was collected through the survey conducted the users of the H University library. By applying SPSS 17.0 and Excel 2007, the final 113 surveys were used for analysis.

• Journal of Korean Library and Information Science Society
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• v.44 no.2
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• pp.77-95
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• 2013

This study was to investigate the usefulness of the measures of the Korean Public Library Operation Assessment. The analyzed data were collected through a fulfillment degree of the evaluation indicators and the opinions of librarians for public libraries evaluation indicators. Same time, the comparative analysis of public library statistical indicators and evaluation indicators was performed. Based on the results of the analysis, I was selected assessment items that need to delete and modify. The improvements proposed in this study will provide a direction for the improvement of the Korean Public Library Operation Assessment. And may be applied to improve the process of the public library evaluation.

• Journal of the Korean Society for Library and Information Science
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• v.23
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• pp.127-163
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• 1992

The proper evaluation of reference services requires qualitative approach as well as quantitative one. The quality of a reference service can be evaluated by how promptly and accurately a librarian responds to the user's questions and also by how much the user is satisfied with the librarian's overall performance in providing the answer. In this study, the reference service of an university library was evaluated by the following procedure : 1. Identification of a group of the most frequently referred Korean government publications through two pre-tests of user surveys. 2. Preparation of 130 questions of bibliographic and factual type from the above publications. 3. Selection of 30 questions which can be answered from the collection of the evaluated library. 4. Mimic requests of reference service by 5 proxies trained on the unobtrusive test method with 30 questions asked at various times of the day and on various days of the week during a period of 5 months. 5. Drawing up of response sheets (by proxies) with descriptive comments on library staffs' question administration, response, attitude, etc. 6. Preparation and coding of data tabulation sheets and final analysis. The conclusions of this study are as follows : 1. The user serveys showed that needs for the library service for government publications were great. The $80\%$ of the government publications users were visiting more than two organizations for access to information and the $37\%$ were getting information directly from the publishers. 2. The librarians of the evaluated library could give correct answers to $53\%$ of 30 (bibliographic and factual) guestions. 3. The correctness of answer was independent of the length of the time spent the librarians. The librarians' grasp of the questions and direction of approach determined the success or failure of the service. 4. The librarians relied too much on the reference library catalog which doesn't include many of the government publications of their own collection. 5. The $79\%$ of the failure of the service were due to the librarians' lack of knowledge as to the information source for government publications and the unsystematic method of approach to it.

• Journal of the Korean Society for Library and Information Science
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• v.54 no.3
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• pp.115-139
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• 2020

The purpose of this study is to evaluate the effectiveness of the theme collection service in public library from the user's perspective. To this end, based on prior research, the effect elements of the theme collection were derived from the service use, librarian, and library level. A questionnaire survey was conducted on 294 users of A public library. The collection satisfaction of users who know the theme collection was higher than those who did not, and showed high recognition for the satisfaction with the use of new and unexpected books. In addition, it was found that the positive recognition tended to be high among users who have been using the library for a long time and frequently use the library service. Based on the users' perception and evaluation of the theme collection, the direction of development of the theme collection service was suggested in terms of collection development, collection use and information service, user-centered classification, and awareness improvement of libraries and librarians.

• Journal of the Korean Society for information Management
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• v.37 no.4
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• pp.151-179
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• 2020

This study explores the potential of using a library chatbot to improve the non-face-to-face digital reference services for academic library users by designing and implementing a library chatbot. Through data analysis, user needs and library services were analyzed, and a scenario was designed by selecting an appropriate development method. For user-friendly interaction, the personality of the chatbot and user interface was designed to evaluate its usability. In addition, the accuracy was verified through the response accuracy evaluation and performance evaluation of the chatbot, and the effectiveness of the chatbot was evaluated through a user satisfaction survey. In order to manage the operation and maintain service quality, the chatbot is improved by monitoring user-chatbot conversations and reflecting user feedback. Based on these findings, recommendations for designing and implementing a library chatbot were made to help improve library reference services.

• Journal of Korean Library and Information Science Society
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• v.54 no.3
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• pp.249-270
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• 2023

The purpose of this study is to identify the characteristics of school library services using the RGT (repertory grid technique), and to examine whether there are differences in the perceptions and internal experiences of school library services between human resources (librarian teachers, subject teachers, and librarians). I used indicators such as element intensity, construct extremity, discrepant constructs, and implicative dilemmas to analyze the characteristics of school library services. The elements of the repertory grid were set to 9, and 14 constructs were set through focus group interviews with 3 librarian-teachers. The GRIDCOR 6.0, which can be accessed online, was used to complete the repertory grid for 30 graduate students of the College of Education, and 6 of them were selected and analyzed, considering the demographic characteristics. From the perspective of element intensity, it was found that the following school library services are important and influential: resource management, teacher-librarian collaboration, and reading and information counseling services. The clarity of one's role, the actual performance, and self-regulatory ability were ranked high from the perspective of constructs intensity.