Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2105-14-364/MediaObjects/12859_2013_Article_6227_Fig4_HTML.jpg)
Alignment algorithm steps and principles. Panel A shows a Plate Diagram of the DPGMM Peptide-Level Model. Panel B illustrates the computation of a product ion profile with a small example of profile size K=10. Panel C gives an overview of the alignment algorithm steps.