کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6462473 1361869 2017 3 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
A comment on the PCAST report: Skip the “match”/“non-match” stage
کلمات کلیدی
PCAST report; Forensic statistics; Match/non-match; Sensitivity; False alarm; Likelihood ratio;
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
A comment on the PCAST report: Skip the “match”/“non-match” stage
چکیده انگلیسی

•Feature-comparison methods produce continuously-valued data.•The PCAST report advocates a two-stage procedure:•(1) Dichotomise the data into “match” or “non-match”.•(2) If “match”, assess correct acceptance and false acceptance rates.•A better procedure would directly statistically model the continuously-valued data.

This letter comments on the report “Forensic science in criminal courts: Ensuring scientific validity of feature-comparison methods” recently released by the President’s Council of Advisors on Science and Technology (PCAST). The report advocates a procedure for evaluation of forensic evidence that is a two-stage procedure in which the first stage is “match”/“non-match” and the second stage is empirical assessment of sensitivity (correct acceptance) and false alarm (false acceptance) rates. Almost always, quantitative data from feature-comparison methods are continuously-valued and have within-source variability. We explain why a two-stage procedure is not appropriate for this type of data, and recommend use of statistical procedures which are appropriate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forensic Science International - Volume 272, March 2017, Pages e7-e9
نویسندگان
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