• Annual Conference on Human and Language Technology
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• 2019.10a
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• pp.443-448
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• 2019

본 논문은 공공 데이터 Open API와 TMDB(The Movie Database) API를 이용하여 사용자의 선호 영화를 Google에서 제공해주는 Tensoflow로 인공신경망 딥러닝 학습하여 사용자가 선호하는 영화를 맞춤 추천하는 애플리케이션의 설계 및 구현에 대하여 서술한다. 본 애플리케이션은 사용자가 쉽게 영화를 추천받을 수 있도록 만들어진 애플리케이션으로 기존의 필터링 방식으로 추천하는 방식의 애플리케이션들과 달리 사용자의 취향을 딥러닝 학습을 통해 최적의 영화 Contents를 추천함과 아울러 기존 영화의 특성을 학습하여 흥행할 신규 영화를 예측하는 기능 또한 제공한다. 본 애플리케이션에 사용된 신규 영화 흥행 예측 모델은 약 85%의 정확도를 보이며 사용자 맞춤추천의 경우 기존 장르 추천이나 협업 필터링 추천보다 딥러닝을 통한 장르, 감독, 배우 등의 보다 세밀한 학습 추천이 가능하다.

• Annual Conference on Human and Language Technology
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• 2020.10a
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• pp.408-413
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• 2020

본 논문은 아고다 사이트의 호텔 정보를 크롤링하여 사용자의 선호 호텔을 구글에서 제공하는 Tensorflow로 인공신경망 딥러닝 학습하여 사용자가 선호하는 호텔을 맞춤 추천하는 애플리케이션의 설계 및 구현에 대하여 서술한다. 본 애플리케이션은 해외(베트남) 호텔을 취향에 맞게 추천받을 수 있도록 만들어진 애플리케이션으로 기존의 필터링 방식으로 추천하는 방식의 애플리케이션들과 달리 사용자의 취향을 딥러닝 학습을 통해 파악하고 최적의 호텔 정보를 추천하는 기능을 제공한다. 본 애플리케이션에 사용된 선호 호텔 예측 모델은 약 84%의 정확도를 보이며 추천 별점으로 표시되어 사용자가 각 호텔에 대해 얼마만큼 선호도를 갖는지 알 수 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.174-176
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• 2022

In this paper, we present a mobile application for 'personalized customized learning' for children with articulation disorders using an artificial intelligence (AI) algorithm. A dataset (Data Set) to analyze, judge, and predict the learner's articulation situation and degree. In particular, we designed a prototype model by looking at how AI can be improved and advanced compared to existing applications from the UX/UI (GUI) aspect. So far, the focus has been on visual experience, but now it is an important time to process data and provide a UX/UI (GUI) experience to users. The UX/UI (GUI) of the proposed mobile application was to be provided according to the learner's articulation level and situation by using CRNN (Convolution Recurrent Neural Network) of DeepLearning and Auto Encoder GPT-3 (Generative Pretrained Transformer). The use of artificial intelligence algorithms will provide a learning environment with a high degree of perfection to children with articulation disorders, thereby enhancing the learning effect. I hope that you do not have any fear or discomfort in conversation by improving the perfection of articulation with 'personalized and customized learning'.

• Journal of the Korea Society of Computer and Information
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• v.19 no.10
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• pp.135-149
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• 2014

This study proposed the ubiquitous learning system by finding the difficulties which students have in learning the course of science and analyzing the current learning applications that are used commercially. Through case studies, we found 4 problems. First, the request of long learning time by most of the existing video-based learning applications. Second, it is impossible to know their level of learning due to the lack of open learning contents. Third, it is difficult for learners to participate in interactive learning. Fourth, there are educational contents without considerations on the level of learners. To refine the difficulties due to these problems, we designed and implemented a new ubiquitous learning system which applies the small learning contents for short-term learning, open learning system and enhanced hierarchical learning contents. The system was implemented based on Android. It provides learners with useful science education. We conducted a questionnaire for third grade middle school students in order to show that the proposed system has a good educational effects. The questionnaire asks for the differences between the proposed ubiquitous learning system and the existing learning application. We concluded that the proposed system is better than the existing application by using t-test for improvement of learning effects using feedback with which students participate in interactive learning but not in unidirectional learning, and share the learning result.

• Cross-Cultural Studies
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• v.42
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• pp.261-283
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• 2016

The aim of this study is to consider the possibility of learning polite expressions of English using the mobile application Naver Band. To improve communicative competence, students need to develop sociolinguistic competence as well as grammatical and discourse competence. To be accordant to social context, the roles of the participants, and the purpose of the interaction, students have to make an appropriate utterance. When a hearer has a higher social status and is older than a speaker, or have low levels of familiarity, Korean native speaker tends to use polite expressions. Students need to learn polite expressions of English because English has a different honorific system from Korean. To realize the characteristics and function of polite language is one thing, but to learn it in a real classroom is another. This study attempts to apply the use of a mobile application, which is considered a user-friendly tool for students, into learning polite language using the UK historical drama, Downton Abbey. Two tests were administered to an experimental group that used the mobile application and a control group that used group work. The results of the two tests show that the use of the mobile application has a positive effect on learning polite expressions and is effective as an after-school activity. In an open-ended questionnaire, students tend to identify polite expressions as superior or high-level language forms and separate these forms from practical expressions. It should be noted as well that teachers need to consider instructing in modern English when using a historical drama in the teaching and learning of polite expressions.

• Journal of the Korea Society of Computer and Information
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• v.26 no.4
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• pp.239-245
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• 2021

Due to the fourth industrial revolution and the Corona19, the availability of digital devices such as kiosks is a matter directly related to survival for older adults with digital divide. This paper analyzes the problems of existing information service education for older adults and proposes an IT education strategy tailored to aging and life cycle of older adults. The proposed in this study is an educational application-based IT training method that supports repetitive learning regardless of time and place, developing kiosk function as a functional game-type educational application and experimenting with post-training effectiveness. The research method proposed UI usability evaluation frame for older adults, and developed educational applications based on proposed evaluation frame, and conducted kiosk education. As a result of the experiment, the mission success rate after using the IT application was 80.6%, which is a 55.1%P improvement compared to the pre-use(25.5%). This study confirmed that the proposed education for older adults is a way to overcome the limitations of existing IT education in the current situation.

• Journal of The Korean Association of Information Education
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• v.26 no.4
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• pp.285-293
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• 2022

The COVID-19 outbreak, which took longer than expected, caused considerable damage to students' basic academic ability in mathematics. In this paper, a multiplication table practice application that can help students improve their basic multiplication arithmetic skills has been developed based on a cloud-service. The performance of the application was improved by integrating the Flutter framework, Google Cloud, and Google Sheets. As a result of applying this application to 72 6th graders in elementary schools located in K Metropolitan City, for one week. students' spending time required for solving multiplication table problems was reduced by more than 28% compared to the initial period, while students' learning data was able to be accurately collected without errors. It is hoped that the development case conducted through the Flutter framework in this study can lead to the development of other educational learning applications.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.1649-1652
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• 2012

본 연구에서는 사용자의 성격패턴을 사용자의 대화음성 정보만으로 자동 분류할 수 있는 방법과 이를 기반으로 사용자의 성격 맞춤형 학습전략을 적용하는 애플리케이션을 개발하는 것을 목적으로 하였다. 음성대화 속의 발화된 말의 빠르기(speech rate)나 말소리의 크기, 기본주파수(fundamental frequency)의 값과 그들의 변화패턴, 그리고 묵음구간의 여러 가지 통계적 정보 같은 비언어적 단서를 활용하여 성격패턴을 최고 86.3% 까지 정확하게 인식해 낼 수 있었다. 또한 성격 별 영어단어 학습방법을 개발하여 사전 및 사후테스트를 기반으로 실험한 결과 약 24% 성적 향상을 보였다. 이 연구를 통해 확보되는 원천기술은 각종 에듀테인먼트 콘텐츠에는 물론 로봇과의 대화시스템, 치료나 재활을 위한 기능성 콘텐츠 등에 유용하게 사용될 것이다.

• KIPS Transactions on Computer and Communication Systems
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• v.6 no.10
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• pp.415-420
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• 2017

Virtualization technique of OS-level is a new paradigm for deploying applications, and is attracting attention as a technology to replace traditional virtualization technique, VM (Virtual Machine). Especially, docker containers are capable of distributing application images faster and more efficient than before by applying layered image structures and union mount point to existing linux container. These characteristics of containers can only be used in layered file systems that support snapshot functionality, so it is required to select appropriate layered file systems according to the characteristics of the containerized application. We examine the characteristics of representative layered file systems and conduct write performance evaluations of each layered file systems according to the operating principles of the layered file system, Allocate-on-Demand and Copy-up. We also suggest the method of determining a appropriate layered file system principle for unknown containerized application by learning block I/O usage history of each layered file system principles in artificial neural network. Finally we validate effectiveness of artificial neural network created from block I/O history of each layered file system principles.

• The Journal of the Convergence on Culture Technology
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• v.4 no.1
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• pp.27-32
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• 2018

Recently, diverse bio-growth and object production experience learning contents have been developed for AR-based storytelling. In this paper, we will develop a storytelling-based growth type content using 3D printer which can add interest in and motivation of experiential learning. It is possible to increase the value of the characters produced by 3D printer as they can be used as personal collections. The bio-growth type content enables the learners and users to experience the local culture, history, and tourism ecology, which can enhance the educational effect by promoting their understanding in a fun way. The purpose of this study is to develop an application for experiential learning contents which creates a virtual environment in an object smart device where you can experience the culture and ecology of a learning community, and then produce the output using the 3D printer to keep as a personal souvenir. The developed contents application for experiential learning can be utilized not only for students but also for tourists. It is expected to serve as a source for further development of various contents through 3D printing technology.