게시판 > 질답게시판 > 실험의 재현성 이란??

스테파노 Stefano

09-06-08 15:24

(1) 재현성(Reproducibility)은 남이 설명한 방법으로 같은 실험을 진행했을 때 같은 결과가 나타나는지 그렇지 않은지를 알려주는 지표입니다. "재현성이 있다"는 것은 같은 결과가 얻어진다는 것을 의미하고 "재현성이 없다" 는 의미는 설명해준대로 실험 해도 결과가 얻어지지 않는다는 것을 의미합니다.

Wikipedia에 정의된 것을 소개합니다.
http://en.wikipedia.org/wiki/Reproducibility

<재현성(Reproducibility)>
Reproducibility is one of the main principles of the scientific method, and refers to the ability of a test or experiment to be accurately reproduced, or replicated, by someone else working independently.

The results of an experiment performed by a particular researcher or group of researchers are generally evaluated by other independent researchers who repeat the same experiment themselves, based on the original experimental description. Then they see if their experiment gives similar results to those reported by the original group. The result values are said to be commensurate if they are obtained (in distinct experimental trials) according to the same reproducible experimental description and procedure.

<Repeatability(반복성)>
Repeatability is the variation in measurements taken by a single person or instrument on the same item and under the same conditions. A measurement may be said to be repeatable when this variation is smaller than some agreed limit. According to the Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results, repeatability conditions include:

the same measurement procedure
the same observer
the same measuring instrument, used under the same conditions
the same location
repetition over a short period of time.
Repeatability methods were developed by Bland and Altman (1986). The repeatability coefficient is a precision measure which represents the value below which the absolute difference between two repeated test results may be expected to lie with a probability of 95%. The standard deviation under repeatability conditions is part of precision and accuracy.

(2) 재현성(Reproducibility)과 반복성(Repeatability)의 차이
실제 우리나라의 현장에서는 재현성과 반복성을 서로 혼동하여 사용하는 경우가 많은데 재현성(Reproducibility)은 반복성(Repeatability)과는 약간 의미가 다릅니다. 전자는 "다른 사람이 같은 방법으로 검증실험해서 같은 결과를 얻어지는가의 여부"를 의미하고 후자는 "본인이 같은방법으로 실험했을 때 연속해서 같은 결과가 얻어지고 있는 가를 알려주는 지표" 입니다.

Reproducibility is different from repeatability, which measures the success rate in successive experiments, possibly conducted by the same experimenters. Reproducibility relates to the agreement of test results with different operators, test apparatus, and laboratory locations. It is often reported as a standard deviation.

While repeatability of scientific experiments is desirable, it is not considered necessary to establish the scientific validity of a theory. For example, the cloning of animals is difficult to repeat, but has been reproduced by various teams working independently, and is a well established research domain. One failed cloning does not mean that the theory is wrong or unscientific. Repeatability is often low in protosciences.

(1) 재현성(Reproducibility)은 남이 설명한 방법으로 같은 실험을 진행했을 때 같은 결과가 나타나는지 그렇지 않은지를 알려주는 지표입니다.  "재현성이 있다"는 것은 같은 결과가 얻어진다는 것을 의미하고 "재현성이 없다" 는 의미는 설명해준대로 실험 해도 결과가 얻어지지 않는다는 것을 의미합니다.

Wikipedia에 정의된 것을 소개합니다. 
  http://en.wikipedia.org/wiki/Reproducibility

<재현성(Reproducibility)>
Reproducibility is one of the main principles of the scientific method, and refers to the ability of a test or experiment to be accurately reproduced, or replicated, by someone else working independently.

The results of an experiment performed by a particular researcher or group of researchers are generally evaluated by other independent researchers who repeat the same experiment themselves, based on the original experimental description. Then they see if their experiment gives similar results to those reported by the original group. The result values are said to be commensurate if they are obtained (in distinct experimental trials) according to the same reproducible experimental description and procedure.

<Repeatability(반복성)>
Repeatability is the variation in measurements taken by a single person or instrument on the same item and under the same conditions. A measurement may be said to be repeatable when this variation is smaller than some agreed limit. According to the Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results, repeatability conditions include:

the same measurement procedure 
the same observer 
the same measuring instrument, used under the same conditions 
the same location 
repetition over a short period of time. 
Repeatability methods were developed by Bland and Altman (1986). The repeatability coefficient is a precision measure which represents the value below which the absolute difference between two repeated test results may be expected to lie with a probability of 95%. The standard deviation under repeatability conditions is part of precision and accuracy.

(2) 재현성(Reproducibility)과 반복성(Repeatability)의 차이
실제 우리나라의 현장에서는 재현성과 반복성을 서로 혼동하여 사용하는 경우가 많은데 재현성(Reproducibility)은 반복성(Repeatability)과는 약간 의미가 다릅니다.  전자는 "다른 사람이 같은 방법으로 검증실험해서 같은 결과를 얻어지는가의 여부"를 의미하고 후자는 "본인이 같은방법으로 실험했을 때 연속해서 같은 결과가 얻어지고 있는 가를 알려주는 지표" 입니다.

Reproducibility is different from repeatability, which measures the success rate in successive experiments, possibly conducted by the same experimenters. Reproducibility relates to the agreement of test results with different operators, test apparatus, and laboratory locations. It is often reported as a standard deviation.

While repeatability of scientific experiments is desirable, it is not considered necessary to establish the scientific validity of a theory. For example, the cloning of animals is difficult to repeat, but has been reproduced by various teams working independently, and is a well established research domain. One failed cloning does not mean that the theory is wrong or unscientific. Repeatability is often low in protosciences.