• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권4호
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• pp.1738-1764
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• 2019

With the advent of big data, deep learning technology has become an important research direction in the field of machine learning, which has been widely applied in the image processing, natural language processing, speech recognition and online advertising and so on. This paper introduces deep learning techniques from various aspects, including common models of deep learning and their optimization methods, commonly used open source frameworks, existing problems and future research directions. Firstly, we introduce the applications of deep learning; Secondly, we introduce several common models of deep learning and optimization methods; Thirdly, we describe several common frameworks and platforms of deep learning; Finally, we introduce the latest acceleration technology of deep learning and highlight the future work of deep learning.

• Journal of information and communication convergence engineering
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• 제17권4호
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• pp.239-245
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• 2019

Recently, effort to obtain various information from the vast amount of social network services (SNS) big data generated in daily life has expanded. SNS big data comprise sentences classified as unstructured data, which complicates data processing. As the amount of processing increases, a rapid processing technique is required to extract valuable information from SNS big data. We herein propose a system that can extract human sentiment information from vast amounts of SNS unstructured big data using the naïve Bayes algorithm and natural language processing (NLP). Furthermore, we analyze the effectiveness of the proposed method through various experiments. Based on sentiment accuracy analysis, experimental results showed that the machine learning method using the naïve Bayes algorithm afforded a 63.5% accuracy, which was lower than that yielded by the NLP method. However, based on data processing speed analysis, the machine learning method by the naïve Bayes algorithm demonstrated a processing performance that was approximately 5.4 times higher than that by the NLP method.

• Journal of Information Processing Systems
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• 제17권3호
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• pp.571-585
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• 2021

Applications for object detection are expanding as it is automated through artificial intelligence-based processing, such as deep learning, on a large volume of images and videos. High dependence on training data and a non-transparent way to find answers are the common characteristics of deep learning. Attacks on training data and training models have emerged, which are closely related to the nature of deep learning. Privacy, integrity, and robustness for the extracted information are important security issues because deep learning enables object recognition in images and videos. This paper summarizes the security issues that need to be addressed for future applications and analyzes the state-of-the-art security studies related to robustness, privacy, and integrity of object detection for images and videos.

• 한국시스템다이내믹스연구
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• 제15권4호
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• pp.129-159
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• 2014

This Study discuss exploring normative-prescriptive factors after the themes on Organizational learning categorize two descriptive/explanatory-perspectives, prescriptive/normative dimension. The former would contain information processing model, theory of action, organizing in organization, while Senge's suggestion on Learning Organization may compose the latter. Each perspective is reconstructed and reinterpreted into the causal mapping relationship founded on system thinking and SD. Underlying on the former try to discovery validities of the latter. But this study only put forward the integral-dynamic model of organizational learning without empirical simulation.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2006년도 추계학술발표대회
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• pp.641-644
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• 2006

e-learning에서 m-learning으로 진행함에 따라 기존에 사용하던 PDA, Notebook 이 아닌 일반 사용자들이 대부분 가지고 있는 휴대폰을 학습도구로 이용, 다양한 형식의 e-learning contents를 m-learning contents로 변환 활용하기 위하여 화면 capture 기법을 활용하고 무선통신망을 배제하고 유선통신망을 이용하여 서비스 할 수 있는 모델을 제시한다.

• Journal of Information Processing Systems
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• 제15권4호
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• pp.967-985
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• 2019

Bug report processing is a key element of bug fixing in modern software maintenance. Bug reports are not processed immediately after submission and involve several processes such as bug report deduplication and bug report triage before bug fixing is initiated; however, this method of bug fixing is very inefficient because all these processes are performed manually. Software engineers have persistently highlighted the need to automate these processes, and as a result, many automation techniques have been proposed for bug report processing; however, the accuracy of the existing methods is not satisfactory. Therefore, this study focuses on surveying to improve the accuracy of existing techniques for bug report processing. Reviews of each method proposed in this study consist of a description, used techniques, experiments, and comparison results. The results of this study indicate that research in the field of bug deduplication still lacks and therefore requires numerous studies that integrate clustering and natural language processing. This study further indicates that although all studies in the field of triage are based on machine learning, results of studies on deep learning are still insufficient.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.500-501
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• 2019

4차산업의 융합시대를 맞이하여 단순한 학습이 아닌 다양한 학문을 학습하고 융합하여 적용하기 위해서는 주입식 수업보다는 자기주도방식의 학습방법이 중요해지고 있다. 따라서 다양한 교육 기관에서는 자기주도적인 학습 방법의 개발에 많은 노력을 하고 있다. 자기주도적인 학습이 효과적으로 수행되기 위해서는 교수자는 학생의 학업에 직접 관여하기 보다는 학업의 전체적인 과정을 관리하는 것이 더 중요하다. 이에 학습 상담은 자기주도적학습을 효과적으로 수행하는데 중요한 방법이 된다. 이에 본 논문에서는 학습 상담 내용을 자연어 처리를 통해 다양한 응용이 가능하도록 이를 구현할 수 있는 자연어 처리를 위한 오픈 데이터 현황에 대한 분석을 수행 하였다.

• 한국컴퓨터산업학회논문지
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• 제4권10호
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• pp.673-684
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• 2003

영상처리에 관한 이론을 제공하고 있는 대부분의 서적들은 여러 가지 영상처리 과정은 프로그램 코드로, 영상처리 결과는 결과 영상만을 단순하게 제공하고 있기 때문에 학습자가 그 처리과정과 결과를 직접 확인하기 위해서는 별도의 컴파일러를 사용해야 하는 불편함이 있다. 따라서 이론 학습과 동시에 그 결과를 확인할 수 있도록 실습을 병행할 수 있는 학습 도구의 개발이 필요하다. 본 논문에서는 영상처리에 관한 이론을 단원 별로 체계적으로 학습할 수 있을 뿐만 아니라, 해당 단원에 관계되는 영상처리과정을 이해할 수 있도록 제공되는 실습 창을 통해 직접 프로그램을 작성하고 실행하여 그 결과를 확인할 수 있는 현장 실습이 가능한 영상처리 학습 시스템을 제시 한다. 제시하는 시스템은 플랫폼에 독립인 시스템이 되기 위해서 자바 언어로 구현하였으며, 학습 내용의 체계적인 관리와 제공을 위해서 단원 별 내용을 데이터베이스로 구성함으로써 사용자가 필요에 따라 단원 별로 재학습하기에 적합하도록 구성하였다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2019년도 춘계학술발표대회
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• pp.533-534
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• 2019

This paper is to summarize the academic status of deep learning in Chinese scientific institutions and universities based on the literatures from CNKI. We analyzed the various development of deep learning in China based on the application of computer vision, voice recognition and natural language processing.

• 한국기계가공학회지
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• 제20권12호
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• pp.1-7
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• 2021

The deep learning image processing technique was used to prevent accidents in lathe work caused by worker negligence. During lathe operation, when the chuck is rotated, it is very dangerous if the operator's hand is near the chuck. However, if the chuck is stopped during operation, it is not dangerous for the operator's hand to be in close proximity to the chuck for workpiece measurement, chip removal or tool change. We used YOLO (You Only Look Once), a deep learning image processing program for object detection and classification. Lathe work images such as hand, chuck rotation and chuck stop are used for learning, object detection and classification. As a result of the experiment, object detection and class classification were performed with a success probability of over 80% at a confidence score 0.5. Thus, we conclude that the artificial intelligence deep learning image processing technique can be effective in preventing incidents resulting from worker negligence in future manufacturing systems.