• Title/Summary/Keyword: CONSISTENCY

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The Strong Consistency of Regression Quantiles Estimators in Nonlinear Censored Regression Models

  • Choi, Seung-Hoe
    • Journal of the Korean Data and Information Science Society
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    • v.13 no.1
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    • pp.157-164
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    • 2002
  • In this paper, we consider the strong consistency of the regression quantiles estimators for the nonlinear regression models when dependent variables are subject to censoring, and provide the sufficient conditions which ensure the strong consistency of proposed estimators of the censored regression models. one example is given to illustrate the application of the main result.

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The Strong Consistency of Nonlinear Least Squares Estimators

  • Kim, Hae-Kyung
    • Journal of the Korean Statistical Society
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    • v.18 no.2
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    • pp.85-96
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    • 1989
  • This paper is concerned with the strong consistency of the least squares estimators for the nonlinear regression models. A simple and practical sufficient condition for the strong consistency of the least squares estimators is given. It is also discussed that the extension of the strong consistency to a wide class of regression functions can be established by imposing some condition on the input values. Some examples are given to illustrate the application of main result.

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The strong consistency of the $L_1$-norm estimators in censored nonlinear regression models

  • Park, Seung-Hoe;Kim, Hae-Kyung
    • Bulletin of the Korean Mathematical Society
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    • v.34 no.4
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    • pp.573-581
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    • 1997
  • This paper is concerned with the strong consistency of the $L_1$-norm estimators for the nonlinear regression models when dependent variables are subject to censoring, and provides the sufficient conditions which ensure the strong consistency of $L_1$-norm estimators of the censored regression models.

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STRONG CONSISTENCY FOR AR MODEL WITH MISSING DATA

  • Lee, Myung-Sook
    • Journal of the Korean Mathematical Society
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    • v.41 no.6
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    • pp.1071-1086
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    • 2004
  • This paper is concerned with the strong consistency of the estimators of the autocovariance function and the spectral density function for the autoregressive process in the case where only an amplitude modulated process with missing data is observed. These results will give a simple and practical sufficient condition for the strong consistency of those estimators. Finally, some examples are given to illustrate the application of main result.

Design and Implementation of Scope Consistency Protocol for Software Distributed Shared Memory System (소프트웨어 분산공유메모리 시스템을 위한 Scope Consistency 프로토콜의 설계 및 구현)

  • 이상권;윤희철;이준원
    • Proceedings of the Korean Information Science Society Conference
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    • 2000.04a
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    • pp.618-620
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    • 2000
  • 거짓 공유(flase sharing) 및 추가적인 통신으로 인한 성능 저하를 방비하기 위해서 소프트웨어 분산공유메모리 시스템을 위한 다양한 메모리 모델들이 제안되었다. Scope Consitency 모델은 Brazos, JIAJIA와 같은 최근 시스템에 채택된 모델로서, consistency scope 개념을 사용해서 데이터와 동기화 변수 간의 관계를 자동으로 인식한다. 본 논문에서는 Scope Consistency 프로토콜의 설계, 구현, 그리고 성능 측정 결과에 관해서 설명한다.

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THE STRONG CONSISTENCY OF THE ASYMMETRIC LEAST SQUARES ESTIMATORS IN NONLINEAR CENSORED REGRESSION MODELS

  • Choi, Seung-Hoe;Kim, Hae-Kyung
    • Communications of the Korean Mathematical Society
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    • v.18 no.4
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    • pp.703-712
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    • 2003
  • This paper deals with the strong consistency of the asymmetric least squares for the nonlinear censored regression models which includes dependent variables cut off midway by any of external conditions, and provide the sufficient conditions which ensure the strong consistency of proposed estimators of the censored regression models. One example is given to illustrate the application of the main result.

A Study of stability in ratings for clothing styles (의복스타일에 따른 평가의 재현성 차이에 관한 연구)

  • 유경숙
    • Journal of the Korean Society of Clothing and Textiles
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    • v.27 no.8
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    • pp.924-934
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    • 2003
  • The aim of the present study was to measure intra-individual consistency in clothing style evaluation and to examine its relation to the ratings. For this study, a pilot test was conducted to 50 clothing majored university students to explore the stimulus of‘cute’,‘casual’,‘sexy’,‘elegant’,‘intelligent’,‘formal’,‘romantic’,‘individual’,‘refined’for the 9 each image styles from the 32 spring wears in fashion magazine$\boxDr$FARBE$\boxUl$(March, 2000). On the basis of the preliminary survey, the question items explored the 15 pairs of bipolar adjectives as seven-point Likert type. The main survey was preceded 94 female and 111 men of university students from March 13 to 24 in 2000, twice for 7-days interval. As a result of analyzing of correlation coefficients between the two ratings for each subjects, intra-individual consistency in the evaluation, ranged from -.11 to .87 and mean coefficient was .64 of female and .20 to .76 and mean coefficient was .57 of male. Female had higher intra-individual consistency in the evaluation than male. Based on the coefficients, the subjects were classified into three groups: high, medium, and low intra-individual consistency. Analysis of variance of mean ratings by the three groups revealed that significant difference existed in 42% of female and 25% of male in 135 combinations of 9 clothing and 15 semantic differential scales. There was an apparent tendency that subjects of female with high intra-individual consistency were mostly definitely to evaluate clothing, whereas the ones with low were least. But male shows opposit trend compare to each groups of female. The result of this study, it was found that female rated higher intra-individual consistency and definition in the two times evaluations than male and among the semantic differential scales'consistency differ depending on style and gender. It is believed that the result of this study is helpful clothing image evaluation, and clothing image selection tendency.

Retrogradation Behavior of Rice Starches Differing in Amylose Content and Gel Consistency (아밀로오스 함량과 Gel Consistency의 차이에 의한 품종별 쌀전분의 노화특성)

  • Kum, Jun-Seok;Lee, Sang-Hyo;Lee, Hyun-Yu;Lee, Chan
    • Korean Journal of Food Science and Technology
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    • v.28 no.6
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    • pp.1052-1058
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    • 1996
  • The effect of varietal differences of rice starches by amylose content and gel consistency on the retrogradation behavior was studied. Setback viscosity of rice flour measured in a Brabender amylograph was significantly affected by amylose content as well as gel consistency. Increase in the rigidity modulus (E) of rice starch gels during storage determined by using texture analyzer indicated that amylose content was an important factor in terms of hardness increase. Kinetics of retrogradation showed that time constant of rice starch gels was influenced by amylose content, but not by gel consistency.

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Data Consistency-Control Scheme Using a Rollback-Recovery Mechanism for Storage Class Memory (스토리지 클래스 메모리를 위한 롤백-복구 방식의 데이터 일관성 유지 기법)

  • Lee, Hyun Ku;Kim, Junghoon;Kang, Dong Hyun;Eom, Young Ik
    • Journal of KIISE
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    • v.42 no.1
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    • pp.7-14
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    • 2015
  • Storage Class Memory(SCM) has been considered as a next-generation storage device because it has positive advantages to be used both as a memory and storage. However, there are significant problems of data consistency in recently proposed file systems for SCM such as insufficient data consistency or excessive data consistency-control overhead. This paper proposes a novel data consistency-control scheme, which changes the write mode for log data depending on the modified data ratio in a block, using a rollback-recovery scheme instead of the Write Ahead Logging (WAL) scheme. The proposed scheme reduces the log data size and the synchronization cost for data consistency. In order to evaluate the proposed scheme, we implemented our scheme on a Linux 3.10.2-based system and measured its performance. The experimental results show that our scheme enhances the write throughput by 9 times on average when compared to the legacy data consistency control scheme.

The ICT Operation Performance by a New ICT Investment and Policy Consistency of Government Organizations (정부조직의 신규 ICT 투자와 정책 일관성에 따른 ICT 운영 성과)

  • Jung, Byoungho
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.15 no.2
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    • pp.87-99
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    • 2019
  • The purpose of this study is to examine an organizational ICT(Information and Communication Technology) performance by ICT investment and policy consistency of government organizations. As the rapid development of ICT is becoming an essential element of social culture, the ICT operation of bureaucratic government also is becoming important. The central government has invested substantially new ICT for improving the quality of nationwide service and to promote administrative efficiency. However, various departments of government occur frequently duplication investments of ICT, and budget conflicts between organizations caused difficulties in maximizing ICT competency. I will confirm the ICT operational performance by ICT investment behavior and organizational work competency as well as the significance of ICT policy consistency. The method of study used a structural equation. The research model set ICT investment behavior as independent variables, organizational work competencies and policy consistency as mediations, and operational performance as dependencies. As a result of the research, New ICT interests show negative effects that caused work change between government organizations and government-funded body. But, New ICT convergence shows positive effects on increasing the two competency variables. The two competency variables show negative effects that caused changes in ICT policy consistency and show no impact on the ICT operational performance. The ICT policy consistency shows a positive effect on enhancing ICT operational performance. The study contribution explain updated the contingency theory and because the ICT policy consistency is essential, negotiation between government organizations will be important. Future research will require a qualitative study through interviews in government organizations about consistency enhance of ICT policy.