• Title/Summary/Keyword: Identification

검색결과 18,529건 처리시간 0.12초

유전자알고리즘을 이용한 시지연 공정 식별 (The Identification of Time-Delay Process Using Genetic Algorithm)

  • 최홍규;전광호;송영주;신강욱
    • 한국조명전기설비학회:학술대회논문집
    • /
    • 한국조명전기설비학회 2003년도 학술대회논문집
    • /
    • pp.355-359
    • /
    • 2003
  • In this paper, an identification method for a first order dead time process is proposed. This method used the genetic algorithm for parameter identification of process. The proposed method gives a better identification result than the existing methods under step testing. The effectiveness of the identification method has been demonstrated through a number of simulation examples.

  • PDF

EXISTENCE OF OPTIMAL SOLUTION AND OPTIMALITY CONDITION FOR PARAMETER IDENTIFICATION OF AN ECOLOGICAL SPECIES SYSTEM

  • LI CHUNFA;FENG ENMIN
    • Journal of applied mathematics & informatics
    • /
    • 제18권1_2호
    • /
    • pp.273-286
    • /
    • 2005
  • Parameter identification problem of a three species (predator, mutualist-prey, and mutualist) ecological system with reaction-diffusion phenomenon is investigated in this paper. The mathematical model of the parameter identification problem is constructed and continuous dependence of the solution for the direct problem on the parameters identified is obtained. Finally, the existence of optimal solution and an optimality necessary condition for the parameter identification problem are given.

Unification of neural network with a hierarchical pattern recognition

  • Park, Chang-Mock;Wang, Gi-Nam
    • 대한인간공학회:학술대회논문집
    • /
    • 대한인간공학회 1996년도 추계학술대회논문집
    • /
    • pp.197-205
    • /
    • 1996
  • Unification of neural network with a hierarchical pattern recognition is presented for recognizing large set of objects. A two-step identification procedure is developed for pattern recognition: coarse and fine identification. The coarse identification is designed for finding a class of object while the fine identification procedure is to identify a specific object. During the training phase a course neural network is trained for clustering larger set of reference objects into a number of groups. For training a fine neural network, expert neural network is also trained to identify a specific object within a group. The presented idea can be interpreted as two step identification. Experimental results are given to verify the proposed methodology.

  • PDF

LPC에 의한 화자 식별 (On using the LPC parameter for Speaker Identification)

  • 조병모
    • 한국음향학회:학술대회논문집
    • /
    • 한국음향학회 1987년도 학술발표회 논문집
    • /
    • pp.82-85
    • /
    • 1987
  • Preliminary results of using the LPC parameter for text-independent speaker identification problem are presented. The idetification process includes log likelihood ratio for distance measure and dynamic programming for time normalization. To generate the data base for experiments, ten times. Experimental results show 99.4% of identification accuracy, incorrect identification were made when the speaker uses a dialect.

  • PDF

A new identification method for MIMO Hammerstein nonlinear precesses

  • Lee, Yong-Joon;Sung, Su-Whan;Park, Sunwon
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 제어로봇시스템학회 2002년도 ICCAS
    • /
    • pp.61.5-61
    • /
    • 2002
  • 1. Introduction 2. Development of the Proposed Identification Method 2.1 MlMO Hammerstein nonlinear process 2.2 Process activation 2.3 Identification of the linear dynamic subsystem 2.4 Identification of the nonlinear static function 3. Simulation Study 4. Conclusion. Acknowledgment. References

  • PDF

변증 진단 체계 개발 및 응용 연구 분석 -한방 비만변증을 중심으로- (Analysis of Development and Application of Pattern Identification System -Based on Oriental Obesity Pattern Identification-)

  • 박정식;송윤경;황의형;정원석;박원형;차윤엽;신승우;박태용;장보형;김호준;고성규
    • 한방재활의학과학회지
    • /
    • 제24권2호
    • /
    • pp.107-114
    • /
    • 2014
  • Objectives The purpose of this study is analyzing internal research trends of oriental obesity pattern identification in korean literature based on obesity pattern identification questionnaires, development and application of Pattern Identification System to help solve problems of future researches. Methods 6 Korean databases were searched for articles of oriental obesity pattern identification, irrespective of publication year and 13 studies were reviewed. An analytical method such as descriptive statistics and an actual number and percentage was used. Results We collected 13 studies. 4 studies were published in 2012 and 2008, the highest number of studies. 7 Clinical studies were the major research method. The Studies were classified according to the characteristics and design. 5 studies were about research of analysis and improvement of oriental obesity pattern identification questionnaire, the most number of studies. 4 studies were about research of observational studies in clinical on obesity pattern identification. 3 studies were about research of intervention studies in clinical on obesity pattern identification and 1 study was about clinical practice recommendation. Conclusions Establishment of obesity pattern identification system and its clinical application could lead to standardizing obesity pattern identification and clinical practice guideline. Applied on other diseases, obesity pattern identification system could also lead to improving treatment rate, contributing to the development of clinical practice guidelines and academic field of research.

전문가시스템을 활용한 사상체질과 팔강변증, 기혈변증, 병사변증간의 상관관계 (Correlation between Sasang Constitution and Eight Principle Pattern Identification, Qi-Blood Pattern Identification, Bing-Xie Pattern Identification by using Oriental Diagnosis System)

  • 황교성;박준관;최성운;노윤환;조영석;신동하;권영규
    • 동의생리병리학회지
    • /
    • 제32권6호
    • /
    • pp.370-374
    • /
    • 2018
  • Oriental Diagnosis System(ODS) is an artificial intelligence program that utilize entered diagnosis knowledge, determine patient's disease and decide right medicine. The purpose of this study is to find a correlation between pattern Identification in Korean medicine and each sasang types(Tae-Eum and So-Yang) by analyzing ODS diagnosis result. Eventually our study secure availability of using ODS program at clinical training or developing diagnosis program. Subject of this study is 50 patients who was performed Sasang constitution diagnosis (28 patients were Tae-Eum and 22 patients were So-Yang). We analyize patient's diagnosis records by using ODS program and obtained result about pattern Identification. We used SPSS statistics 23 in analyzing the differences of the scores of Eight Principle Pattern Identification, Qi-Blood Pattern Identification, and Bing-xie Pattern Identification in each Sasang types (Tae-Eum, So-Yang). The Heat and Heat-moisture scores were significantly different(p<0.05) and Qi-Blood Pattern Identification scores were not different in each Sasang types(p>0.05). And Weight was significantly different in each Sasang types(p<0.05). It is hard to generalize the result because subject of this study was not enough and had sample speciality(tinnitus patients). However, we explained correlation between pattern Identification in korean medicine and each sasang types based on quantifiable and objective evidence system. it can be used at education of korean medicine and evidence of practice diagnosis. Futhermore, there have been no studies about anaylizing correlation between pattern Identification in Korean medicine and each sasang types using ODS program. So it is worthy of being utilized at clinical evidence data of ODS program.

Structural identification of a steel frame from dynamic test-data

  • Morassi, A.
    • Structural Engineering and Mechanics
    • /
    • 제11권3호
    • /
    • pp.237-258
    • /
    • 2001
  • Structural identification via modal analysis in structural mechanics is gaining popularity in recent years, despite conceptual difficulties connected with its use. This paper is devoted to illustrate both the capabilities and the indeterminacy characterizing structural identification problems even in quite simple instances, as well as the cautions that should be accordingly adopted. In particular, we discuss an application of an identification technique of variational type, based on the measurement of eigenfrequencies and mode shapes, to a steel frame with friction joints under various assembling conditions. Experience has suggested, so as to restrict the indeterminacy frequently affecting identification issues, having resort to all the a priori acknowledged information on the system, to the symmetry and presence of structural elements with equal stiffness, to mention one example, and mindfully selecting the parameters to be identified. In addition, considering that the identification techniques have a local character and correspond to the updating of a preliminary model of the structure, it is important that the analytical model on the first attempt should be adequately accurate. Secondly, it has proved determinant to cross the results of the dynamic identification with tests of other typology, for instance, static tests, so as to fully understand the structural behavior and avoid the indeterminacy due to the nonuniqueness of the inverse problem.

A Study on the Way to Improvement of Career Commitment and Life Satisfaction among Chinese Students Who Study in Korea

  • Jin, Xiu
    • International Journal of Advanced Culture Technology
    • /
    • 제8권4호
    • /
    • pp.39-50
    • /
    • 2020
  • The current number of international students is gradually increasing in the world due to their passion for study or exchange students programs related to be affiliated with their universities. Many international students have great hope for their successful life of studying abroad. The factors that play a key role in successful study abroad can be seen as life satisfaction in host country and career commitment. Therefore, this study suggested the way to improve students' life satisfaction and career commitment among Chinese international students in Korea. It focused on social identification as a core factor in improving international student life satisfaction and career commitment. In addition, it also focused on social support as a factor to increase social identification. According to the results of empirical analysis, it was verified that perceived social support improves social identification among international students. In addition, social identification improves their life satisfaction and career commitment. Therefore, the mediating effect of social identification was found to be significant in the relationship between perceived social support and life satisfaction and career commitment. This study was verified that if international students perceive social support, they can experience social identification. This process can eventually lead to life satisfaction and career commitment. Based on these results, it emphasized that the role and importance of social identification. Finally, the practical implications and future research directions were discussed.

퍼지집합과 러프집합을 이용한 계층 구조 가스 식별 시스템의 설계 (Design of a Hierarchically Structured Gas Identification System Using Fuzzy Sets and Rough Sets)

  • 방영근;이철희
    • 전기학회논문지
    • /
    • 제67권3호
    • /
    • pp.419-426
    • /
    • 2018
  • An useful and effective design method for the gas identification system is presented in this paper. The proposed gas identification system adopts hierarchical structure with two level rule base combining fuzzy sets with rough sets. At first, a hybrid genetic algorithm is used in grouping the array sensors of which the measured patterns are similar in order to reduce the dimensionality of patterns to be analyzed and to make rule construction easy and simple. Next, for low level identification, fuzzy inference systems for each divided group are designed by using TSK fuzzy rule, which allow handling the drift and the uncertainty of sensor data effectively. Finally, rough set theory is applied to derive the identification rules at high level which reflect the identification characteristics of each divided group. Thus, the proposed method is able to accomplish effectively dimensionality reduction as well as accurate gas identification. In simulation, we demonstrated the effectiveness of the proposed methods by identifying five types of gases.