• Proceedings of the Korea Information Processing Society Conference
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• 2020.05a
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• pp.544-546
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• 2020

의료 데이터를 이용하여 인공지능 기계학습 연구를 수행할 때 자주 마주하는 문제는 데이터 불균형, 데이터 부족 등이며 특히 정제된 충분한 데이터를 구하기 힘들다는 것이 큰 문제이다. 본 연구에서는 이를 해결하기 위해 GAN(Generative Adversarial Network) 기반 고해상도 의료 영상을 생성하는 프레임워크를 개발하고자 한다. 각 해상도 마다 Scale 의 Gradient 를 동시에 학습하여 빠르게 고해상도 이미지를 생성해낼 수 있도록 했다. 고해상도 이미지를 생성하는 Neural Network 를 고안하였으며, PGGAN, Style-GAN 과의 성능 비교를 통해 제안된 모델이 양질의 고해상도 의료영상 이미지를 더 빠르게 생성할 수 있음을 확인하였다. 이를 통해 인공지능 기계학습 연구에 있어서 의료 영상의 데이터 부족, 데이터 불균형 문제를 해결할 수 있는 Data augmentation 이나, Anomaly detection 등의 연구에 적용할 수 있다.

• Annual Conference on Human and Language Technology
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• 2023.10a
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• pp.571-576
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• 2023

본 연구에서는 인권의 측면에서 AI 모델이 향상된 답변을 제시할 수 있는 방안을 모색하기 위해서 AI가 인권의 문제를 고민하는 전문가와 자신의 문제를 해결하고자 하는 사용자 사이에서 어느 정도로 도움을 줄 수 있는가를 정량적, 정성적으로 검증했다. 구체적으로는 국가인권위원회의 결정례와 상담사례를 분석한 후 이를 바탕으로 좀 더 나은 답변은 무엇인지에 대해 고찰하기 위해서 인권과 관련된 질의 응답 세트를 만든다. 질의 응답 세트는 인권 코퍼스를 학습한 모델과 그렇지 않은 모델의 생성 결과를 바탕으로 한다. 또한 생성된 질의 응답 세트를 바탕으로 설문을 실시하여 전문적인 내용을 담은 문장에 대한 선호도를 분석한다. 본 논문은 대화형 생성 모델이 인권과 관련된 주제에 대해서도 선호되는 답변을 제시할 수 있는가에 대한 하나의 대안이 될 수 있을 것이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2024.05a
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• pp.627-630
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• 2024

본 연구는 인공지능(AI)과 인간이 만든 예술작품 사이의 나타나는 기술적 요소에서 나타나는 차이점 탐구를 통해, 인공지능 예술의 특성, 가능성, 한계를 파악하고, 예술가의 역할에 대한 심층적 이해를 도모하는 것을 목적으로 한다. 연구 결과는 AI 생성 예술이 인간 예술과 경쟁할 수 있으며, 일반 대중 사이에서 높은 미학적 가치를 인정받을 수 있음을 나타냈다. 또한 AI 가 예술창작에서 중요한 역할을 할 수 있음을 나타냈다. 본 연구는 예술계 내에서 AI 예술의 위치와 사회적 수용에 대한 더 깊은 이해를 제공할 것으로 기대된다.

• Journal of Practical Engineering Education
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• v.15 no.3
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• pp.589-595
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• 2023

Artificial intelligence(AI) is spurring advancements in EdTech, the merger of technology and education. This includes the creation of effective learning materials and personalized student experiences. Our study focuses on developing a programming education software that employs state-of-the-art generative AI. Our software also includes prompts optimized for programming code analysis, which are based on the well-known ChatGPT API. Furthermore, the necessary functions for acquiring programming skills were created with a user interface and developed as a question-and-answer template function based on an AI chatbot. The objective of this study is to guide the development of educational programmes that make use of generative AI.

• Journal of Intelligence and Information Systems
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• v.29 no.4
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• pp.129-164
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• 2023

In a situation where the use and introduction of Large Language Models (LLMs) is expanding due to recent developments in generative AI technology, it is difficult to find actual application cases or implementation methods for the use of internal company data in existing studies. Accordingly, this study presents a method of implementing generative AI services using the LLM application architecture using the most widely used LangChain framework. To this end, we reviewed various ways to overcome the problem of lack of information, focusing on the use of LLM, and presented specific solutions. To this end, we analyze methods of fine-tuning or direct use of document information and look in detail at the main steps of information storage and retrieval methods using the retrieval augmented generation (RAG) model to solve these problems. In particular, similar context recommendation and Question-Answering (QA) systems were utilized as a method to store and search information in a vector store using the RAG model. In addition, the specific operation method, major implementation steps and cases, including implementation source and user interface were presented to enhance understanding of generative AI technology. This has meaning and value in enabling LLM to be actively utilized in implementing services within companies.

• The Journal of the Convergence on Culture Technology
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• v.10 no.1
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• pp.517-524
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• 2024

Generative AI, exemplified by models like ChatGPT, has revolutionized human-machine interactions in the 21st century. As these advancements permeate various sectors, their intersection with the arts is both promising and challenging. Despite the arts' historical resistance to AI replacement, recent developments have sparked active research in AI's role in artistry. This study delves into the potential of AI in visual arts education, highlighting the necessity of swift adaptation amidst the Fourth Industrial Revolution. This research, conducted at a 4-year global higher education institution located in Gyeongbuk, involved 70 participants who took part in a creative convergence module course project. The study aimed to examine the influence of AI collaboration in visual arts, analyzing distinctions across majors, grades, and genders. The results indicate that creative activities with AI positively influence students' creativity and digital media literacy. Based on these findings, there is a need to further develop effective educational strategies and directions that incorporate AI.

• Journal of the Korea Computer Graphics Society
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• v.30 no.3
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• pp.149-158
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• 2024

Photo booths have traditionally provided a fun and easy way to capture and print photos to cherish memories. These booths allow individuals to capture their desired poses and props, sharing memories with friends and family. To enable diverse expressions, generative AI-powered photo booths have emerged. However, existing AI photo booths face challenges such as difficulty in taking group photos, inability to accurately reflect user's poses, and the challenge of applying different concepts to individual subjects. To tackle these issues, we present CINEMAPIC, a photo booth system that allows users to freely choose poses, positions, and concepts for their photos. The system workflow includes three main steps: pre-processing, generation, and post-processing to apply individualized concepts. To produce high-quality group photos, the system generates a transparent image for each character and enhances the backdrop-composited image through a small number of denoising steps. The workflow is accelerated by applying an optimized diffusion model and GPU parallelization. The system was implemented as a prototype, and its effectiveness was validated through a user study and a large-scale pilot operation involving approximately 400 users. The results showed a significant preference for the proposed system over existing methods, confirming its potential for real-world photo booth applications. The proposed CINEMAPIC photo booth is expected to lead the way in a more creative and differentiated market, with potential for widespread application in various fields.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1057-1058
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• 2023

이 논문은 인공지능 기술 GPT 를 게임과 융합한 서비스 "페어리테일"에 대해 다룬다. 페어리테일은 게임 스크립트와 엔딩을 인공지능을 활용하여 자동 생성하는 게임으로, 사용자는 사용자가 입력한 데이터에 맞춰 생성된 스토리를 경험할 수 있다. 논문에서는 이 게임의 AI 활용 방법과 AI 가 게임 산업에 미칠 수 있는 영향을 다루며, 생성 및 창작이 가능한 인공지능은 게임 산업에 다방면으로 활용될 잠재력이 강하다는 점을 강조한다. 최종적으로는 AI 의 발전이 게임 업계에 미칠 수 있는 영향을 탐구하고자 한다.

• Convergence Security Journal
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• v.24 no.2
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• pp.9-17
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• 2024

This paper examines the security threats to enterprise Generative Artificial Intelligence systems and proposes countermeasures. As AI systems handle vast amounts of data to gain a competitive edge, security threats targeting AI systems are rapidly increasing. Since AI security threats have distinct characteristics compared to traditional human-oriented cybersecurity threats, establishing an AI-specific response system is urgent. This study analyzes the importance of AI system security, identifies key threat factors, and suggests technical and managerial countermeasures. Firstly, it proposes strengthening the security of IT infrastructure where AI systems operate and enhancing AI model robustness by utilizing defensive techniques such as adversarial learning and model quantization. Additionally, it presents an AI security system design that detects anomalies in AI query-response processes to identify insider threats. Furthermore, it emphasizes the establishment of change control and audit frameworks to prevent AI model leakage by adopting the cyber kill chain concept. As AI technology evolves rapidly, by focusing on AI model and data security, insider threat detection, and professional workforce development, companies can improve their digital competitiveness through secure and reliable AI utilization.

• Journal of the Korea Society of Computer and Information
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• v.29 no.2
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• pp.87-99
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• 2024

This study aims to identify the competencies required for webtoon artists to survive in the future era of AI commercialization. It explores the current and future use of AI in webtoons, and predicts the role of artists in the future webtoon industry. The study finds that AI will replace human workers in some areas, but human empathy-related fields can be sustained. Artist roles like story projectors, Visual directors, and AI editors were identified as potential models for the changing role of artists. To address terminology ambiguity, a three-step AI categorization mechanical type AI, humanoid type AI, and transcendent type AI was proposed for a more realistic separation of AI capabilities. The researcher suggested these findings as guidelines for developing skills in emerging artists or re-skilling existing ones, emphasizing collaboration with AI for mutual growth rather than a negative acceptance of new technology.