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Interrelationships Between Receiver/Relative Operating Characteristics Display, Binomial, Logit, and Bayes' Rule Probability of Detection MethodologiesUnknown risks are introduced into failure critical systems when probability of detection (POD) capabilities are accepted without a complete understanding of the statistical method applied and the interpretation of the statistical results. The presence of this risk in the nondestructive evaluation (NDE) community is revealed in common statements about POD. These statements are often interpreted in a variety of ways and therefore, the very existence of the statements identifies the need for a more comprehensive understanding of POD methodologies. Statistical methodologies have data requirements to be met, procedures to be followed, and requirements for validation or demonstration of adequacy of the POD estimates. Risks are further enhanced due to the wide range of statistical methodologies used for determining the POD capability. Receiver/Relative Operating Characteristics (ROC) Display, simple binomial, logistic regression, and Bayes' rule POD methodologies are widely used in determining POD capability. This work focuses on Hit-Miss data to reveal the framework of the interrelationships between Receiver/Relative Operating Characteristics Display, simple binomial, logistic regression, and Bayes' Rule methodologies as they are applied to POD. Knowledge of these interrelationships leads to an intuitive and global understanding of the statistical data, procedural and validation requirements for establishing credible POD estimates.
Document ID
20140005337
Document Type
Technical Memorandum (TM)
Authors
Generazio, Edward R.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
May 9, 2014
Publication Date
April 1, 2014
Subject Category
Quality Assurance And Reliability
Report/Patent Number
NF1676L-18397
NASA/TM-2014-218183
L-20385
Funding Number(s)
WBS: WBS 724297.40.44.07
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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