• Journal of Korean Library and Information Science Society
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• v.47 no.4
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• pp.1-18
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• 2016

The purpose of this study is to explore application of topic modeling for topic analysis of book report. Topic modeling can be understood as one method of topic analysis. This analysis was conducted with texts in 23 book reports using LDA function of the "topicmodels" package provided by R. According to the result of topic modeling, 16 topics were extracted. The topic network was constructed by the relation between the topics and keywords, and the book report network was constructed by the relation between book report cases and topics. Next, Centrality analysis was conducted targeting the topic network and book report network. The result of this study is following these. First, 16 topics are shown as network which has one component. In other words, 16 topics are interrelated. Second, book report was divided into 2 groups, book reports with high centrality and book reports with low centrality. The former group has similarities with others, the latter group has differences with others in aspect of the topics of book reports. The result of topic modeling is useful to identify book reports' topics combining with network analysis.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.07a
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• pp.95-96
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• 2016

본 논문에서는 디리클레 분포와 베이즈 추론 모델을 활용하여 전자우편을 분류하고 정리하는 방법을 제안한다. 과거 원치 않는 광고성 이메일인 스팸 탐지에서 시작한 전자우편 분류는 지속적인 송수신 량의 증가와 내용의 다양화로 인해 광고성과 정보성의 판단 기준이 모호해진 상태이다. 스팸 탐지와 같은 이분법적 분류 방식이 아닌 내용의 주제 별로 자동 분류할 수 있는 방법이 필요하다. 본 논문에서 다루는 제안 기법은 전자우편의 내용에서 다뤄질 수 있는 주제의 종류를 예측하기 위한 방법을 제공한다. 발신하거나 수신된 전자우편이 속한 주제를 자동으로 정할 수 있다. 본 제안 기법의 활용을 통해 전자우편의 분류만이 아닌 업무 및 시장 동향 분석과 정보보안 분야에서는 악성코드 분류에 사용될 수 있을 것으로 기대된다.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.22 no.2
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• pp.235-248
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• 2011

In this study, co-word occurrence analysis was performed on 288 articles rerieved from the Web of Science DB with the topic of web archiving. Results showed that research on image archiving information technology and system were most frequently carried out especially in medical area. Within library and information science and records management & archives areas, web archiving/digital preservation project subject and web archiving tools and methodology subject were studied mostly. It is expected that research related to web archiving software and tools will be increased in near future.

• KIPS Transactions on Software and Data Engineering
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• v.6 no.11
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• pp.521-526
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• 2017

Data format of Big data is diverse and vast, and its generation speed is very fast, requiring new management and analysis methods, not traditional data processing methods. Textual mining techniques can be used to extract useful information from unstructured text written in human language in online documents on social networks. Identifying trends in the message of politics, economy, and culture left behind in social media is a factor in understanding what topics they are interested in. In this study, text mining was performed on online news related to a given keyword using topic - oriented analysis technique. We use Latent Dirichiet Allocation (LDA) to extract information from web documents and analyze which subjects are interested in a given keyword, and which topics are related to which core values are related.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.413-416
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• 2022

본 연구의 목적은 국내외 교육에서 필수역량으로 제시하고 있는 '디지털 리터러시'를 주제로 한 연구 문헌들을 분석하여 동향을 살펴보고, 앞으로의 필요한 연구 주제를 알아보고자 한다. 이를 위해 교육학 분야로 색인한 '디지털 리터러시' 관련 논문들을 찾아 연도별 분포, 연구대상, 연구분야, 연구목적 및 관련 주제에 따라 분석하였다. 분석결과 SW교육의 적용과 코로나19로 디지털 리터러시 교육에 대한 관심이 증가하고 있지만, 연구 대상과 주제가 다양하게 분포되어 있지 않으며 디지털 리터러시의 개념과 영역에 대해 명확히 구분되어 있지 않았다는 점을 알 수 있었다. 이에 디지털 리터러시에 대한 활발한 연구를 위해 교사들을 위한 디지털 리터러시, 정보교과에서의 디지털 리터러시, 타 리터러시와의 명확한 개념과 영역 구분, 리터러시 교수·학습 방법 및 적용 사례, 디지털 리터러시 측정 도구 등의 주제를 제안하였다.

• Proceedings of the KHMA Conference
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• 2005.11a
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• pp.201-202
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• 2005

• Journal of the Korean Society for Library and Information Science
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• v.35 no.3
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• pp.17-34
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• 2001

It is very important to organize materials at intemet bookstores. It is time for us to develop a subject classification scheme as a tool for increasing the effectiveness of information retrieval with ease of subject access. The purpose of this study is to examine the subject features of internet bookstores in order to suggest the effective design of the subject scheme for them. Nine internet bookstore websites are analyzed at the aspect of the subject classification of the materials. Based upon the results of this study, an effective subject classification for internet bookstores is suggested to provide a better subject access.

• Journal of the Korean Society of Earth Science Education
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• v.16 no.1
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• pp.143-152
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• 2023

This study was conducted on 115 students from 4 classes of 2nd year intensive courses at B University of Education. Elementary preservice teachers were surveyed on what teaching methods they were aware of regarding the subject of elementary science astronomy. Recognition data of 80 people from whom the questionnaire was collected were analyzed. For this study, a 5-day survey was conducted. Elementary preservice teachers complained of difficulties in teaching methods in the astronomy area among various areas of the science department. The purpose of this study was to find out what difficulties elementary preservice teachers have in teaching elementary science astronomy topics, and to find more efficient teaching methods for teaching astronomy topics. The topic of the survey was set by discussing with the preparatory elementary teachers about what kind of survey to use in teaching the subject of elementary science astronomy. There are many topics for elementary science astronomy, but two questionnaires were prepared focusing on the unit on the earth and the moon. 'What does the earth look like?' in Unit 4 (1/10) of the 3rd year, 1st semester In Unit 2 (1/11) of the 1st semester of the 6th grade, it was set as 'What does the moon look like?'. Candidly describe how to teach the subject of astronomy to elementary school students by mobilizing all the background knowledge of preparatory elementary teachers. The results of these surveys were visualized and displayed using Netminer as a language analysis method, and the contents of the responses to the actual surveys by pre-service elementary school teachers were described and interpreted. Based on these results, preparatory elementary teachers tried to suggest a more efficient teaching method for the subject of elementary science astronomy. In addition, basic procedures and methods for lecturing on the subject of elementary science astronomy were presented. A more efficient teaching method for teaching elementary science astronomy subjects to pre-service elementary teachers was suggested.

• The Journal of the Korea Contents Association
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• v.13 no.6
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• pp.260-269
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• 2013

This article aims to investigate the trends of Education Welfare researches in Korea. For this study, a content analysis was employed in relation to topics, targets and methods of 596 articles, masters and doctoral thesis published from 2003 to 2012. The results reveal that the papers have expanded to adjacent fields. The analysis of the topics shows that institutionalization papers have decreased, on the other hand, researches on the role of the social worker showed an increase. Middle school students were the most common target and quantitative methods were the most used. In future, multi-disciplinary and inter-disciplinary researches presenting a wide diversity of topics and targets should be considered.

• Journal of The Korean Association For Science Education
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• v.30 no.1
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• pp.54-67
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• 2010

The purpose of this study was to investigate research trends in the area of science education for the gifted through the analysis of articles published from 1999 to 2009. The articles were analyzed by subjects, topics and study method. In the analysis according to year, we discovered that the number of articles has increased since 2005. Most research subjects were middle school students. Other research subjects included elementary and high school students. The first topic that was researched in general was the characteristics of the scientifically gifted. The second topic was the curriculum and program of science education for the gifted. It was also found that the method most employed was surveys, followed by experimental study.