DNA fingerprinting for Forensic identification: some statistical issues

Majumder, Partha P. (1995) DNA fingerprinting for Forensic identification: some statistical issues Electrophoresis, 16 (1). pp. 1684-1688. ISSN 0173-0835

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/elps.11...

Related URL: http://dx.doi.org/10.1002/elps.11501601279


In DNA fingerprinting work, it is well known that, although fragment lengths of a sample are uncorrelated, measurement errors of fragment lengths are correlated. Unless the fragment length is very large, the measurement errors are directly proportional to fragment lengths. In the currently practiced matching procedures for forensic identification, these facts are ignored or inadequately used. Some of these issues are addressed in this study. Based on available empirical observations, an appropriate statistical model and techniques are proposed. These techniques lead to the definition and construction of elliptical match windows, instead of independent interval (linear) windows currently used. Simulation experiments indicate that the performance of the proposed procedure is superior to the current procedures. Further, the proposed procedure does not make use of some assumptions underlying the current procedures. Extensions of the procedure to utilize replicate measurements of crimescene and/or suspect's samples are indicated.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Fragment Length; Measurement Error; Match Window; Elliptical Window
ID Code:73250
Deposited On:03 Dec 2011 12:11
Last Modified:03 Dec 2011 12:11

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