• Title/Summary/Keyword: co-training

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A Co-training Method based on Classification Using Unlabeled Data (비분류표시 데이타를 이용하는 분류 기반 Co-training 방법)

  • 윤혜성;이상호;박승수;용환승;김주한
    • Journal of KIISE:Software and Applications
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    • v.31 no.8
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    • pp.991-998
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    • 2004
  • In many practical teaming problems including bioinformatics area, there is a small amount of labeled data along with a large pool of unlabeled data. Labeled examples are fairly expensive to obtain because they require human efforts. In contrast, unlabeled examples can be inexpensively gathered without an expert. A common method with unlabeled data for data classification and analysis is co-training. This method uses a small set of labeled examples to learn a classifier in two views. Then each classifier is applied to all unlabeled examples, and co-training detects the examples on which each classifier makes the most confident predictions. After some iterations, new classifiers are learned in training data and the number of labeled examples is increased. In this paper, we propose a new co-training strategy using unlabeled data. And we evaluate our method with two classifiers and two experimental data: WebKB and BIND XML data. Our experimentation shows that the proposed co-training technique effectively improves the classification accuracy when the number of labeled examples are very small.

An Improved Co-training Method without Feature Split (속성분할이 없는 향상된 협력학습 방법)

  • 이창환;이소민
    • Journal of KIISE:Software and Applications
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    • v.31 no.10
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    • pp.1259-1265
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    • 2004
  • In many applications, producing labeled data is costly and time consuming while an enormous amount of unlabeled data is available with little cost. Therefore, it is natural to ask whether we can take advantage of these unlabeled data in classification teaming. In machine learning literature, the co-training method has been widely used for this purpose. However, the current co-training method requires the entire features to be split into two independent sets. Therefore, in this paper, we improved the current co-training method in a number of ways, and proposed a new co-training method which do not need the feature split. Experimental results show that our proposed method can significantly improve the performance of the current co-training algorithm.

A Study on the Co-operative Education of the Junior Health College (보건전문대학의 산학협동교육에 관한 연구)

  • Sung, Hwan-Kyung
    • Journal of Technologic Dentistry
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    • v.12 no.1
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    • pp.23-45
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    • 1990
  • This study aimed at inquiring into the basic theory on co-operative education, grasping and analyzing the present situation of the junior health college, the present condition of co-operative education and into problem. and seeking to find a solution to activate the co-operative edcation of the junior health colleges. For this purpose this study compared the co-operative education system in our country with that of foreign countries revolving around the related literature to co-operative education, analyzed it, and the pointed out its problem. And this study classified into the solution of establishing co-operative education system, the solution of consolidating the on-the-spot training system, the solution to activate the co-operative education of the junior health college. First this study suggested three methods as a part of establishing co-operative education system as below. 1. The need to set up the ideology concerning co-operative education. 2. The construction of the advisory committee for co-operative education. 3. The establishment of an agency for co-operative education. And this study suggested nine methods as the method of consolidating the on-the-spot training as below. 1. The execution of the basic research for the on-the-spot training. 2. The reorganization of the existing curriculum into the curriculum the industrial organization requires. 3. The establishing of the system in a closer cooperation with the industrial organization for the on-the-spot training. 4. The participation in solving commonly the problems of the industrial organization and in education. 5. The establishing of the guidance system assuming exclusive charge of the on-the-spot training. 6. The submission of the evaluation sheet for the on-the-spot training. 7. The extension of the period of the on-the-spot training and the reorganization of an educational system. 8. The persistent support for the on-the-spot training at the governmental dimension. 9. The securing of the educational dost spent on the on-the-spot training and the imposition of benefits on the industrial organization.

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Effect of Gait Initiation Training on Gait and Center of Pressure Displacement During Early Phase of Gait in Stroke Patients (보행 개시 훈련이 뇌졸중 환자의 보행 초기 단계 신체 압력중심 이동과 보행에 미치는 영향)

  • Ku, Ji-Hye;Seong, Jae-Hyeon;Choi, Jong-Duk
    • Physical Therapy Korea
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    • v.21 no.1
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    • pp.13-19
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    • 2014
  • The purpose of this study was to determine the effect of gait initiation training on gait and center of pressure (CoP) during gait initiation in stroke patients. Twenty-three subjects were randomly assigned to either an experimental group (EG) or a control group (CG). The EG received gait initiation training with increased CoP posterior distances the maximum the rear on gait training. The CG received general gait training. Both groups received training three times a week over a period of four consecutive weeks. The figures for CoP distances the maximum the rear, CoP distances time the mover the maximum the rear, the Tinetti Performance-Oriented Mobility Assessment (POMA), and gait velocity were recorded both before and after the training sessions for both groups. The EG's results for CoP distances the maximum the rear, CoP distances time the mover the maximum the rear, and POMA improved after training (p<.05). In terms of the rate of change of CoP distances the maximum the rear, the EG demonstrated a significantly higher increase (p<.05) than did the CG. The results of this study suggest that increased CoP distances the maximum the rear affect the gait initiation and gait performance of stroke patients. Further studies with a larger sample size are necessary to verify the accuracy of the results of this study.

The Development of Key Performance Indicators for Regional Co-Training Programs, Using Analytic Hierarchy Process Technique (가중치 분석을 적용한 지역공동형 훈련성과 평가지표 개발)

  • Lee, Youngmin
    • The Journal of the Korea Contents Association
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    • v.14 no.4
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    • pp.160-167
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    • 2014
  • The purpose of this paper was to develop the key performance indicators of regional co-training programs, using analytic hierarchy process method. Firstly, we pooled indicators by reviewing the literatures. The researcher checked the properness and representative of them and then, the training professionals reviewed them again. Finally, we finalized the indicators, depending on the indicator domains such as MOU (Memorandum of Agreement) company (the training participation rate of MOU companies, training participation of employees, and etc.), training performance (the completion of the program, employment rate, and etc.), cost-effectiveness (training cost per capita), satisfaction (satisfaction rate of MOU companies and training participants), and regional co-training enhancement (the operation of the committee, the will for training of the regional municipal government, and etc.). The weight size varied by the regional training needs, satisfaction of MOU companies, and regional committees of human resource development. We also suggested the continuous revision of the key performance indicators for regional co-training.

The Effects of Creativity Training by CoRT Thinking Skills on Young Children's Creativity and Nature-Friendly Attitude (CoRT 사고 기법을 활용한 창의성 훈련이 유아의 창의성 및 자연친화적 태도에 미치는 효과)

  • Kim, Che-Hui;Kim, Bit-Nae;Hwang, Hee-Sook
    • Journal of Fisheries and Marine Sciences Education
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    • v.25 no.6
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    • pp.1263-1272
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    • 2013
  • The purpose of this study was to analyze the effects of CoRT thinking skills training on young children's creativity and nature-friendly attitude. The subject of this study were 50 young children who attended kindergartens in Busan. The experimental group participated in CoRT thinking skills training while the comparison group participated in the typical activities according to the monthly plan of the kindergarten curriculum. The instrument used to evaluate the creativity and nature-friendly attitude of the young children were TTCT and nature-friendly attitude test. Data were analyzed by ANCOVA. Result showed that there were significant differences between the experimental group and the comparison group in post-test scores. The results suggested that the CoRT thinking skills training would be more effective to develop young children's creativity and nature-friendly attitude than typical activities according to the monthly plan of the kindergarten curriculum.

3D video simulation system using GPS (GPS를 이용한 3D 영상 구현 시뮬레이션 시스템)

  • Joo, Sang-Woong;Kang, Byeong-Jun;Shim, Kyou-Chul;Kim, Kyung-Hwan;Jung, Hoe-Kyung
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2012.10a
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    • pp.891-893
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    • 2012
  • Currently, aircraft and automobile simulator for training provides a variety of training by making hypothetical situation on a simulator Installed on the ground Currently. And the instructor maximizes the effectiveness of the training by Monitoring training and instructing the required training. When trainees are boarding the aircraft or automobile. The Instructor in the ground is not able to monitoring aircraft, automobile. The assessment of the training is not easy after the end of the training Therefore, it is difficult to provide high quality of education to the students. In this paper, Simulation software is to develop the following. Collecting GPS and real-time information for aircraft, automobile ${\grave{a}}implementing$ 3D simulation. Implementing Current image of the aircraft or automobile in the screen by 3D Real-time monitoring of training situation at the control center utilizing for training saving 3D video files Analysis, evaluation on training After the end of the training.

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The Effects of Qigong training on the cardiopulmonary functions and catecholamine levels after physical traning stress in untrained college students (‘내경일지선(內徑一指禪)’ 기공수련이 대학생의 운동부하 스트레스 후의 심폐기능 및 Catecholamine 변화에 미치는 영향)

  • Kim Jong-Woo;Oh Jae-Keun;Whang Wei-Wan
    • Journal of Oriental Neuropsychiatry
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    • v.7 no.1
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    • pp.39-48
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    • 1996
  • This study was performed to investigate the effects of Qigong training after physical training stress in untrained college students For this study, 6 voluntary subjects(male 4, female 2) were chosen in untrained students of K University. they were trained by teachers during 6 weeks and tested just before Qingong training and after 6 weeks. Each subject was performed a treadmill exercise(model Q65, Quinton Co, U.S.A.) to the all-out state. During exercise stress test, electrocardiogram, heart rate were checked by stress test monitor(model Q4500, Quinton Co, U.S.A) and also oxygen uptake, maximal oxygen uptake analyzed continuously by automatic gas analysis(model QMC, Quinton Co, U.S.A). During physical training the serum were collected 3 times, pre-experimental rest time, and serum catecholamine were measured by HPLC.T-test of statistical analysis system was used in every experiment for statistical assessment. The results of T-test on these data were summarized as follow:1.Heart rate change during exercise stress test after Qigong training was shown more decreasing tendency than before training. Especially, heart rate change after Qigong training during resting periods was decreased significantly than before training.2. Oxygen uptake change during exercise stress test after Qigong training was shown more increasing tendency than before training, And also maximal oxygen uptake after Qigong training was shown more increasing tendency than before 6 weeks.3. Epinephrine level of after Qigong training was more decreased significantly than before training in all-out state. And norepinephrine level of after Qigong training was shown more decreasing tendency than before training in all-out state and after 30 minutes rest time. Above results indicate that Qigong training for 6 weeks could be effective to elevate the cardiopulmonary functions and diminish the stress responses of the physical stress.

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E-Mail Filtering with Co-training Based on Specific Features (특정 속성과 Co-training을 이용한 전자메일 분류)

  • Ryu, Je;Yoon, Sung-Hee;Han, Kwan-Rok
    • Proceedings of the Korean Information Science Society Conference
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    • 2003.04c
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    • pp.549-551
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    • 2003
  • 본 논문은 점점 증가되고 있는 SPAM 메일 문제를 해결하기 위한 방법으로써, 특정 속성에 기반을 둔 학습 알고리즘의 co-training을 통한 전자메일 분류 기법을 제안한다. 전자메일 분류는 결국 문서 분류 기술과 다르지 않다. 이미 많은 연구에서 학습 알고리즘을 이용한 문서 분류 기법은 많이 제안되고 검증되었다. 본 논문에서는 이러한 학습 알고리즘들을 co-training을 통하여 해당 메일이 SPAM인지 아닌지 구분하며, 학습의 효율성을 높이기 위하여 전자메일의 특정한 속성들, 예를 들면, 핵심문구나 기타 특정한 문구 및 전자메일의 헤더 정보 등을 학습 기반으로 이용하였다.

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