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                            Library & Multimedia
 Progress Toward the Determination of Correct Classification Rates in Fire Debris Analysis
NCJ Number
              246136
Journal

*Journal of Forensic Sciences* Volume: 58 Issue: 4 Dated: July 2013 Pages: 887-896
Author(s)
          Erin E. Waddell B.S.;
                        Emma T. Song B.S.;
                        Caitlin N. Rinke B.S.;
                        Mary R. Williams M.S.;
                        Michael E. Sigman Ph.D.
Date Published

July 2013
Length
              10 pages
Annotation
              Principal components analysis PCA, linear discriminant analysis LDA, and quadratic discriminant analysis QDA were used to develop a multistep classification procedure for determining the presence of ignitable liquid residue in fire debris and assigning any ignitable liquid residue present into the classes defined under the American Society for Testing and Materials ASTM E 1618-10 standard method.
Abstract
              Principal components analysis PCA, linear discriminant analysis LDA, and quadratic discriminant analysis QDA were used to develop a multistep classification procedure for determining the presence of ignitable liquid residue in fire debris and assigning any ignitable liquid residue present into the classes defined under the American Society for Testing and Materials ASTM E 1618-10 standard method. A multistep classification procedure was tested by cross-validation based on model data sets comprised of the time-averaged mass spectra also referred to as total ion spectra of commercial ignitable liquids and pyrolysis products from common building materials and household furnishings referred to simply as substrates. Fire debris samples from laboratory-scale and field test burns were also used to test the model. The optimal model's true-positive rate was 81.3% for cross-validation samples and 70.9% for fire debris samples. The false-positive rate was 9.9% for cross-validation samples and 8.9% for fire debris samples. Abstract published by arrangement with Wiley.
      
  
          Additional Details
Grant Number(s)
        2009-DN-BX-K227


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Report (Study/Research)


  
  
        
  Award
        Statistical Assessment of the Probability of Correct identification of Ignitable Liquids in Fire Debris Analysis
    
  
  
Date Published: July 1, 2013
    
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