• 한국언어정보학회지:언어와정보
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• 제2권2호
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• pp.185-220
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• 1998

The purpose of this research is to propose a set of basic guidelines for the construction of English test suites, a set of basic guidelines for the construction of Korean test suites to objectively evaluate the performance of machine translation systems. For this end, we constructed 650 English test sentences, 650 Korean test sentences, and developed the statistical methods and tools for the comparative evaluation of the English-Korean machine translation systems. It also evaluates the existing commercial English-Korean machine translation systems. The importance of this research lies in that it will promote an awareness of the importance and need of testing machine translation systems within the Natural Language Community. This research will also make a big contribution to the development of evaluation methods and techniques for appropriate test suites for Korean information processing systems. The results of this research can be used by the natural language community to test the performance and development of their information processing systems or machine translation systems.

• Journal of the Korean Data and Information Science Society
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• 제11권2호
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• pp.201-215
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• 2000

The classical method for regression analysis is the least squares method. However, if the data contain significant outliers, the least squares estimator can be broken down by outliers. To remedy this problem, the robust methods are important complement to the least squares method. Robust methods down weighs or completely ignore the outliers. This is not always best because the outliers can contain some very important information about the population. If they can be detected, the outliers can be further inspected and appropriate action can be taken based on the results. In this paper, I propose a sequential outlier test to identify outliers. It is based on the nonrobust estimate and the robust estimate of scatter of a robust regression residuals and is applied in forward procedure, removing the most extreme data at each step, until the test fails to detect outliers. Unlike other forward procedures, the present one is unaffected by swamping or masking effects because the statistics is based on the robust regression residuals. I show the asymptotic distribution of the test statistics and apply the test to several real data and simulated data for the test to be shown to perform fairly well.

• 한국통신학회논문지
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• 제25권4A호
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• pp.558-565
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• 2000

조합형 회로에 대한 테스트 패턴 생성의 문제는 거의 만족할 만한 수준에 도달한데 반해 순차형 회로에 대한 테스트 패턴 생성은 여전히 많은 연구를 필요로 하고 있다. 본 연구에서는 효율적인 검사 패턴 생성을 위하여 검사 패턴 생성 과정에서 탐색되어지는 상태 공간 정보의 효율적으로 저장하고, 그렇게 저장된 상태 공간 정보를 이용하여 효율적으로 검사패턴을 생성하는 알고리즘을 제안한다. 그리고 제안된 알고리즘과 기존의 결정적 검사 패턴 생성 알고리즘을 실험을 통하여 비교함으로써 제안된 알고리즘의 효율성을 검증한다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2003년도 춘계학술발표논문집 (하)
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• pp.1937-1940
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• 2003

정보보호 평가는 크게 시스템 평가인 CC(Common Criteria)평가와 암호모듈 평가인 CMVP(Cryptographic Module Validation Program)평가로 나눌 수 있다. 본 논문은 국내 표준 암호 알고리즘 SEED를 북미의 CMVP의 3가지 블록 알고리즘 시험방법인 KAT(Known Answer Test), MCT(Monte C미개 Test), MMT(Multi-block Message Test)를 JAVA환경에 적용하여 시범 구현하였다. 테스트 방법으로 CMVP의 MOVS, TMOVS, AESAVS를 선정하여 FIPS 표준을 적용하였다. 구현 환경으로는 JCE기반의 Cryptix를 채택하여 CMVP의 블록 암호 알고리즘 테스트 시스템 중 일부를 구현하였다.

• Journal of the Korean Data and Information Science Society
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• 제9권2호
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• pp.357-363
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• 1998

In this paper we propose a nonparametric lack of fit test based on the bootstrap method for testing the null parametric linear model by using linear smoothers. Most of existing nonparametric test statistics are based on the residuals. Our test is based on the centered bootstrap residuals. Power performance of proposed bootstrap lack of fit test is investigated via Monte carlo simulation.

• Journal of information and communication convergence engineering
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• 제6권1호
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• pp.43-46
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• 2008

This paper proposes an advanced test circuit for detecting the connectivity between a drum ring of laser printer and PCB. The detection circuit of charge sharing is proposed, which minimizes the influences of internal parasitic capacitances. The test circuit is composed of precharge circuit, analog comparator, level shifter. Its functional operation is verified using $0.6{\mu}m$ 3.3V/40V CMOS process parameter by HSPICE. Access time is100ns. Layout of the drum contact test circuit is $465{\mu}m\;{\times}\;117{\mu}m$.

• Journal of the Korean Data and Information Science Society
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• 제16권1호
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• pp.137-144
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• 2005

In $I{\times}J$ incomplete contingency tables, the test of independence proposed by Chen and Fienberg(1974) uses $I{\times}J-1$ instead of (I-1)(J-1) degrees of freedom without providing much of an increase in the value of the test statistic. For these reasons, Chen and Fienberg tests are expected to have less power. New Wald test statistic related to the part of Chen and Fienberg test statistic is proposed using delta method. These two tests are compared through Monte Carlo studies.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 추계 학술논문 발표대회
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• pp.269-272
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• 2009

The environment of Ubiquitous in terms of improvement is being expanded to various fields and time enabled system. Thus, a real-time spatial information management system has been developed by integrating a human movement detection system into a SICS(Spatial Information Control System) engine that can integrally manage inside spatial information extracted from 3D CAD and outside spatial information of GIS. The add-on program was developed to extract spatial information necessary for the SICS engine from 3D CAD information, and a human movement detection system was developed. Test bed was operated for 2weeks and indoor human flow information was found out by zone. Also, the direction of future research was decided through a test bed.

• Journal of the Korean Data and Information Science Society
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• 제10권1호
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• pp.57-65
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• 1999

In a resent paper, Na, Lee and Kim(1998) develop a test statistic for testing whether or not the mean residual life changes its trend based on complete data and show that the new test performs better than previously known tests. In this paper, we extend their test to the randomly censored data. The asymptotic normality of the test statistic is established. Monte Carlo simulations are conducted to compare our test with a previously known test by the power of tests.

• Journal of the Korean Data and Information Science Society
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• 제20권2호
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• pp.453-458
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• 2009

In this paper, we consider Jarque-Bera (JB) normality test for the innovations of ARMA-GARCH models. In financial applications, JB test based on the residuals are routinely used for the normality of ARMA-GARCH innovations without a justification. However, the validity of JB test should be justified in advance of the actual practice (Lee et al., 2009). Through the simulation study, it is found that the validity of JB test depends on the shape of test statistic. Specifically, when the constant term is involved in ARMA model, a certain type of residual based JB test produces severe size distortions.