• Convergence Security Journal
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• v.18 no.3
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• pp.53-59
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• 2018

In this paper, we propose a hierarchical image classification scheme for efficient object image classification. In the non-hierarchical image classification, which classifies the existing whole images at one time, it showed that objects with relatively similar shapes are not recognized efficiently. Therefore, in this paper, we introduce the image classification method in the hierarchical structure which attempts to classify object images hierarchically. Also, we introduce to the efficient class structure and algorithms considering the scalability that can occur when a deep learning image classification is applied to an actual system. Such a scheme makes it possible to classify images with a higher degree of confidence in object images having relatively similar shapes.

• The Journal of Society for e-Business Studies
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• v.20 no.2
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• pp.107-123
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• 2015

Internet of Things (IoT) is being globally spotlighted as a fundamental technology to realize hyper-connected society, and as new growth engines of nation and enterprises. Although the technical aspect of IoT receives a great deal of attention as a new business opportunity, the business aspect of IoT is suffering insufficient scholarly research and objective insight. Thus, the business aspect of IoT requires a thorough research on its service market and business opportunities. In order to stimulate the IoT service market and facilitate objective statistic data aggregation, this paper aims to suggest an IoT service categorization model. This model is comprised of three perspectives which are IoT purpose, IoT Player, and IoT Domain; they function as tools to comprehensively analyze the IoT industry. Efficacy of this model has been confirmed by simulating 117 IoT services on the model, in which the results successfully offered the market trend of the IoT service based on Case. This study is able to apply for basic research of IoT-Service Development Plan, and provide practical implications.

• Journal of Internet Computing and Services
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• v.19 no.2
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• pp.17-26
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• 2018

Recently, through the emergence and convergence of Internet services, the unified Internet of thing(IoT) service platform have been researched. Currently, the IoT service is constructed as an independent system according to the purpose of the service provider, so information exchange and module reuse are impossible among similar services. In this paper, we propose a operation based service classification algorithm for various services in order to provide an environment of unfied Internet platform. In implementation, we classify and cluster more than 100 commercial IoT services. Based on this, we evaluated the performance of the proposed algorithm compared with the K-means algorithm. In order to prevent a single clustering due to the lack of sample groups, we re-cluster them using K-means algorithm. In future study, we will expand existing service sample groups and use the currently implemented classification system on Apache Spark for faster and more massive data processing.

• Broadcasting and Media Magazine
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• v.20 no.3
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• pp.37-53
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• 2015

본 고에서는 사물인터넷과 관련된 한국, 미국, 일본 및 유럽 특허 분석을 통해 국가별, 응용분야별 기술개발 현황을 분석하였다. 특허검색 결과 총 101,245건이 검색되었으며 중복제거 및 필터링을 통하여 8,304건의 유효 분석대상 특허를 선별하였다. 사물인터넷의 응용분야를 기준으로 4개의 중분류로 기술체계를 수립하였으며, 중분류 내의 각 세부기술을 대상으로 분석을 수행하였다. 이를 통해 우리나라의 기술 수준, 선진 기업의 연구 개발동향 및 핵심특허 현황 등을 파악하여 객관적인 특허정보 제공과 사물인터넷 분야의 연구개발 방향을 제시한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.1138-1140
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• 2017

센서 및 초근거리 통신 기술의 발전으로 다양한 사물인터넷 서비스가 등장하였다. 현재 사물인터넷 서비스는 단일화된 서비스만을 제공하고 있지만 서비스들이 융합된 새로운 서비스로 발전되고 있다. 서비스 융합시 발생할 수 있는 프로토콜의 다양성, 모듈의 중복성등의 문제를 해결하기 위하여 통합 서비스 플랫폼의 필요성이 대두되었다. 이에 본 연구에서는 보다 효율적인 통합 서비스 플랫폼을 제공하기 위한 기반 연구로 사물인터넷 서비스 분류 알고리즘을 제안한다. 제안하는 서비스 분류 알고리즘은 서비스 별 세부 동작을 기반으로 구성된다. 그리고 후속 연구로 실제 서비스에 제안한 서비스 분류알고리즘을 적용하여 서비스간 유사도 분석을 통한 서비스 그룹화에 관한 연구를 진행할 예정이다.

• Journal of Internet of Things and Convergence
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• v.8 no.1
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• pp.65-72
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• 2022

The Internet of Things (IoT) provides data convergence and sharing functions, and IoT technology is the most fundamental core technology in creating new services by convergence of various cutting-edge technologies. However, there are different classification systems for the Internet of Things, and when it is limited to the domestic public sector, it is difficult to properly grasp the current status of which devices are installed and operated with what share, and systematic data or research The results are very difficult to find. Therefore, in this study, the relevance of the classification system for IoT devices was analyzed according to reality based on sales, shipments, and growth rate, and based on this, the actual share of IoT devices among domestic public institutions was analyzed in detail. The derived detailed analysis results are expected to be efficiently utilized in the process of selecting IoT devices for research and analysis to advance information protection technology such as responding to malicious code attacks on IoT devices, analyzing incidents, and strengthening security vulnerabilities.

• Broadcasting and Media Magazine
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• v.20 no.3
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• pp.8-30
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• 2015

각종 사물을 인터넷에 연결하여 다양한 서비스에 활용할 수 있는 융합 기술인 사물인터넷은 기업, 국가, 학계 등의 다양한 참여를 통해 연구되고 있다. 본 고에서는 다양한 사물인터넷 플랫폼 기술 동향을 국제 컨소시움, 국외 업체, 국내 업체에 따라 분류하고 각 플랫폼의 특징 및 동향을 살펴본다. 또한 국제 표준화 단체의 사물인터넷 관련 기술 표준화 동향을 소개한다.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.17 no.2
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• pp.5-22
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• 2006

A cultural classification and a culture contents industrial classification are the basic tools for cultural policies, cultural supporting, cultural statistics, and evaluations and there is a cyclic processes among them. This study finds out the varieties and short time changes of cultural categorization in laws, statistics, indexes, evaluations, research reports. As a result, colon style new cultural classification is suggested which used networks, media, genre, and cultural comparts as principles.

• Review of KIISC
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• v.25 no.2
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• pp.20-26
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• 2015

본 논문에서는 최근 각광받고 있는 사물인터넷 기술 중 디바이스 상의 암호기법 구현 기술의 최신 동향과 앞으로의 전망을 알아보고자 한다. 이를 위해, 사물인터넷 디바이스에 대해 프로세서 기반으로 분류를 하여, 각각의 사물인터넷 디바이스의 특징과 각 디바이스에 대한 암호기법 구현 기술 현황 분석을 통해, 현재 사물인터넷 디바이스 상의 암호기법 구현 기술의 문제점과 앞으로의 사물인터넷 환경에서의 디바이스에 대한 암호기법 구현의 전망을 살펴본다.

• KIISE Transactions on Computing Practices
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• v.22 no.7
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• pp.320-325
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• 2016

By developing the IoT(Internet of Things) technology, devices for smart home environment have rapidly increased. With respect to mobiles, these applications are used to control and manage the various smart devices effectively. However, the existing mechanisms only provide simple information, and hence a difficulty to search or control the smart devices persists, since there is no meaningful relationship between them. In this research, we suggest an interface which visualizes the device's data and controls them effectively, based on the user's device using pattern. As a solution for this problem, we classify the user pattern based on a timeline for the associated circumstance, and visualize the device's data to make a group or to control individually in an easier approach. Also, all meaningful information could be confirmed by summarizing all the data of smart devices.