Appendix C | Dynamic Model Mapping Algorithm
345
Notice that even with RS < threshold the genotype call still could be
no call since the Null model may be the most likely model.
For more information, see
One-sided Wilcoxon’s Signed Rank Test, on
.
Adjustment of thresholds
Increasing the threshold can reduce the number of no calls, but may
also reduce the confidence of the calls.
Decreasing the threshold can increase the confidence of the calls, but
may also increase the number of no calls.
Displaying Rank Scores in the DM Scatter Plot
The DM Scatter Plot (see
Chapter 5, Mapping Analysis Window, on
) displays four different values (rank scores for AA, AB, BB,
and null genotype calls) on a two-dimensional graph. The following
transformations are applied to the data to accomplish this and allow
comparisons of genotype calls for different samples:
• The first transformation accentuates the areas of interests in the
rank score. The scale is 0-1, but genotypes are only called for rank
scores less than 0.25. The first transformation is designed to
magnify the important small rank score differences and lessen
large rank score differences which aren’t significant.
• A second transformation is used to convert to a range 0-1.
• The final transform maps the values to a two dimensional plot.
CONTAMINATION QC CHECK
Because of the importance of detecting mixed or contaminated
samples, GTYPE 4.1 has implemented an additional algorithm to
supplement the Dynamic Model algorithm to help with sample
contamination detection. The MPAM calling algorithm, used to make
genotype calls for the GeneChip 10K mapping arrays, is employed in
this analysis to make genotype calls on a subset of ~ 8,000 SNPs on
DM mapping arrays. These SNPs were chosen based upon robust
GTYPE_manual.book Page 345 Wednesday, August 2, 2006 11:31 AM
Summary of Contents for iServer MicroServer iTHX-M
Page 9: ...Introduction GTYPE_manual book Page 1 Wednesday August 2 2006 11 31 AM...
Page 10: ...GTYPE_manual book Page 2 Wednesday August 2 2006 11 31 AM...
Page 19: ...Chapter 1 GTYPE Overview GTYPE_manual book Page 11 Wednesday August 2 2006 11 31 AM...
Page 20: ...Chapter 1 GTYPE_manual book Page 12 Wednesday August 2 2006 11 31 AM...
Page 55: ...Chapter 2 Getting Started GTYPE_manual book Page 47 Wednesday August 2 2006 11 31 AM...
Page 56: ...Chapter 2 GTYPE_manual book Page 48 Wednesday August 2 2006 11 31 AM...
Page 85: ...Chapter 3 Working with Images GTYPE_manual book Page 77 Wednesday August 2 2006 11 31 AM...
Page 86: ...Chapter 3 GTYPE_manual book Page 78 Wednesday August 2 2006 11 31 AM...
Page 114: ...Chapter 4 GTYPE_manual book Page 106 Wednesday August 2 2006 11 31 AM...
Page 145: ...Chapter 5 Mapping Analysis Window GTYPE_manual book Page 137 Wednesday August 2 2006 11 31 AM...
Page 146: ...Chapter 5 GTYPE_manual book Page 138 Wednesday August 2 2006 11 31 AM...
Page 188: ...Chapter 6 GTYPE_manual book Page 180 Wednesday August 2 2006 11 31 AM...
Page 259: ...Chapter 7 Universal Tag Window GTYPE_manual book Page 251 Wednesday August 2 2006 11 31 AM...
Page 260: ...Chapter 7 GTYPE_manual book Page 252 Wednesday August 2 2006 11 31 AM...
Page 269: ...Chapter 8 Probe Intensity Window GTYPE_manual book Page 261 Wednesday August 2 2006 11 31 AM...
Page 270: ...Chapter 8 GTYPE_manual book Page 262 Wednesday August 2 2006 11 31 AM...
Page 283: ...Chapter 9 NetAffx Annotations GTYPE_manual book Page 275 Wednesday August 2 2006 11 31 AM...
Page 284: ...Chapter 9 GTYPE_manual book Page 276 Wednesday August 2 2006 11 31 AM...
Page 297: ...Chapter 10 Reports GTYPE_manual book Page 289 Wednesday August 2 2006 11 31 AM...
Page 298: ...Chapter 10 GTYPE_manual book Page 290 Wednesday August 2 2006 11 31 AM...
Page 314: ...Appendix A GTYPE_manual book Page 306 Wednesday August 2 2006 11 31 AM...
Page 325: ...Appendix B MPAM Mapping Algorithm GTYPE_manual book Page 317 Wednesday August 2 2006 11 31 AM...
Page 326: ...Appendix B GTYPE_manual book Page 318 Wednesday August 2 2006 11 31 AM...
Page 344: ...Appendix C GTYPE_manual book Page 336 Wednesday August 2 2006 11 31 AM...
Page 362: ...Appendix D GTYPE_manual book Page 354 Wednesday August 2 2006 11 31 AM...
Page 385: ...Appendix E Mapping Tool Algorithms GTYPE_manual book Page 377 Wednesday August 2 2006 11 31 AM...
Page 386: ...Appendix E GTYPE_manual book Page 378 Wednesday August 2 2006 11 31 AM...
Page 393: ...Appendix F IUPAC Base Codes GTYPE_manual book Page 385 Wednesday August 2 2006 11 31 AM...
Page 394: ...Appendix F GTYPE_manual book Page 386 Wednesday August 2 2006 11 31 AM...
Page 397: ...Appendix G File Types GTYPE_manual book Page 389 Wednesday August 2 2006 11 31 AM...
Page 398: ...Appendix G GTYPE_manual book Page 390 Wednesday August 2 2006 11 31 AM...
Page 402: ...Appendix H GTYPE_manual book Page 394 Wednesday August 2 2006 11 31 AM...
Page 405: ...Appendix I Hot Key Descriptions GTYPE_manual book Page 397 Wednesday August 2 2006 11 31 AM...
Page 406: ...Appendix I GTYPE_manual book Page 398 Wednesday August 2 2006 11 31 AM...
Page 409: ...Index GTYPE_manual book Page 401 Wednesday August 2 2006 11 31 AM...
Page 410: ...GTYPE_manual book Page 402 Wednesday August 2 2006 11 31 AM...