• Title/Summary/Keyword: SON Algorithm

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Fuzzy DEA via Genetic Algorithms (Genetic Algorithm을 적용한 Fuzzy DEA에 관한 연구)

  • Choi, Hong;Son, So-Yeong
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2000.04a
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    • pp.569-572
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    • 2000
  • DEA has been effectively applied to various areas which need the evaluation of relative efficiency. We propose a DEA model based on fuzzy LP combined with Genetic Algorithm in order to consider uncertain synergy effects due to M&A of existing organization. We apply the suggested approach to forecasting the efficiency of merged academic departments in a university in Korea. We expect that our approach can be utilized to effectively realign existing departments.

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Music Lyrics Summarization Method using TextRank Algorithm (TextRank 알고리즘을 이용한 음악 가사 요약 기법)

  • Son, Jiyoung;Shin, Yongtae
    • Journal of Korea Multimedia Society
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    • v.21 no.1
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    • pp.45-50
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    • 2018
  • This research paper describes how to summarize music lyrics using the TextRank algorithm. This method can summarize music lyrics as important lyrics. Therefore, we recommend music more effectively than analyzing the number of words and recommending music.

Parameter Estimation of Solar Cell Using a Genetic Algorithm (유전알고리즘을 이용한 태양전지의 매개변수 추정)

  • Son, Yung-Deug;Jin, Gang-Gyoo
    • Proceedings of the KIEE Conference
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    • 2002.11d
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    • pp.313-316
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    • 2002
  • In this paper, we present an online scheme for parameter estimation of solar cell, based on the model adjustment technique and a genetic algorithm. The ideal diode model and the diode model with series and shunt resistor are used to estimate their parameters. Simulation works using field data in the form of a VI characteristic curve are carried out to demonstrate the effectiveness of the proposed method.

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A group identification algorithm for distinguishing close contacts in ships

  • Lin, Qian-Feng;Son, Joo-Young
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2020.11a
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    • pp.75-77
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    • 2020
  • There was an outbreak of COVID-19 on the Diamond Princess cruise ship. Distinguishing close contacts is the important problem to be addressed. Close contacts mean people who stays with the patients of disease like COVID-19 over a period of time. The passenger position on board can be obtained by indoor positioning technology. The feature of close contacts is similar location with COVID-19 patients. Therefore, this paper proposed the idea of distinguishing close contacts on board based on DBSCAN algorithm.

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A Study on the Effect of Weighting Matrix of Robot Vision Control Algorithm in Robot Point Placement Task (점 배치 작업 시 제시된 로봇 비젼 제어알고리즘의 가중행렬의 영향에 관한 연구)

  • Son, Jae-Kyung;Jang, Wan-Shik;Sung, Yoon-Gyung
    • Journal of the Korean Society for Precision Engineering
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    • v.29 no.9
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    • pp.986-994
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    • 2012
  • This paper is concerned with the application of the vision control algorithm with weighting matrix in robot point placement task. The proposed vision control algorithm involves four models, which are the robot kinematic model, vision system model, the parameter estimation scheme and robot joint angle estimation scheme. This proposed algorithm is to make the robot move actively, even if relative position between camera and robot, and camera's focal length are unknown. The parameter estimation scheme and joint angle estimation scheme in this proposed algorithm have form of nonlinear equation. In particular, the joint angle estimation model includes several restrictive conditions. For this study, the weighting matrix which gave various weighting near the target was applied to the parameter estimation scheme. Then, this study is to investigate how this change of the weighting matrix will affect the presented vision control algorithm. Finally, the effect of the weighting matrix of robot vision control algorithm is demonstrated experimentally by performing the robot point placement.

Actuator multiple control method for greenhouse environment control system (온실 환경 제어시스템을 위한 액추에이터 복합 제어 방법)

  • Son, Kyo-Hoon;Park, Dae-Heon;Kim, Se-Han;Kim, Jae-Hyung;Jeung, Eun-Tae
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.11 no.2
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    • pp.39-45
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    • 2012
  • In recent years the USN(Ubiquitous Sensor Networks) technology has been applied in the greenhouse in order to control temperature and humidity automatically. In this paper, we proposed a control algorithm using feedback linearization techniques based on a mathematical model for temperature and humidity environment. Especially, Control algorithm is presented to the operation of the ventilator affecting on the temperature and humidity system at the same time. The System has been designed taking into account the disturbance(External temperature, soil temperature, external humidity, solar radiation and wind). In conclusion, I will present a way to control multiple actuator through simulations. The proposed control algorithm is validated using the Matlab/Simulink tools.

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Improvement of Evolutionary Computation of Genetic Algorithm using SVM

  • Cho, Byung-Sun;Han, So-Hee;Son, Sung-Han;Kim, Jin-Su;Park, Kang-Bak
    • 제어로봇시스템학회:학술대회논문집
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    • 2003.10a
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    • pp.1513-1516
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    • 2003
  • Genetic algorithm is well known as a stochastic searching method. In this paper, a modified genetic algorithm using 'Suppor Vector Machines (SVM)' is proposed. SVM is used to reduce the number of calling the objective function which in turn accelerate the searching speed compared to the conventional GA.

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Detection of View Reversal in a Stereo Video

  • Son, Ji Deok;Song, Byung Cheol
    • IEIE Transactions on Smart Processing and Computing
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    • v.2 no.5
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    • pp.317-321
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    • 2013
  • This paper proposes a detection algorithm for view reversal in a stereoscopic video using a disparity map and motion vector field. We obtain the disparity map of a stereo image was obtained using a specific stereo matching algorithm and classify the image into the foreground and background. Next, the motion vector field of the image on a block basis was produced using a full search algorithm. Finally, the stereo image was considered to be reversed when the foreground moved toward the background and the covered region was in the foreground. The proposed algorithm achieved a good detection rate when the background was covered sufficiently by its moving foreground.

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