CalculateGenotypePosteriors now only computes posterior probs for SNP sites with SNP priors
(other sites have flat priors applied)
CalibrateGenotypeLikelihoods had originally applied HOM_REF/HET/HOM_VAR frequencies in callset as priors before empirical quality analysis. Now has option (-noPriors) to not apply/apply flat priors. Also takes in new external probabilities files, such as those generated by CGP, from which the genotype posterior probability qualities will be read.
Integration test was changed to account for new SNP-only behavior and default behavior to not use missing priors.
(Also, new numRefIfMissing is 0, which should only matter in cases using few samples when you probably don't want to be doing that anyway!)
The new tool gets an VCF file as an input and create a GATK report with the percentages of each mutation type (e.g. A->G, A->T...).
It allow the user to filter sites that will be count based of JXEL or based on the varait quals
A user can aslo print 12 VCF files (one for each mutation) with the VCF line of the mutations that were counted.
Description:
Transforms a delegation dependency from HC to UG genotyping engine into a reusage by inhertance where HC and UG engines inherit from a common superclass GenotyperEngine
that implements the common parts. A side-effect some of the code is now more clear and redundant code has been removed.
Changes have a few consequence for the end user. HC has now a few more user arguments, those that control the functionality that HC was borrowing directly from UGE.
Added -ploidy argument although it is contraint to be 2 for now.
Added -out_mode EMIT_ALL_SITES|EMIT_VARIANTS_ONLY ...
Added -allSitePLs flag.
Stories:
https://www.pivotaltracker.com/story/show/68017394
Changes:
- Moved (HC's) GenotyperEngine to HaplotypeCallerGenotyperEngine (HCGE). Then created a engine superclass class GenotypingEngine (GE) that contains common parts between HCGE and the UG counterpart 'UnifiedGenotypingEngine' (UGE). Simplified the code and applied the template pattern to accomodate for small diferences in behaviour between both caller
engines. (There is still room for improvement though).
- Moved inner classes and enums to top-level components for various reasons including making them shorter and simpler names to refer to them.
- Create a HomoSpiens class for Human specific constants; even if they are good default for most users we need to clearly identify the human assumption across the code if we want to make
GATK work with any species in general; i.e. any reference to HomoSapiens, except as a default value for a user argument, should smell.
- Fixed a bug deep in the genotyping calculation we were taking on fixed values for snp and indel heterozygisity to be the default for Human ignoring user arguments.
- GenotypingLikehooldCalculationCModel.Model to Gen.*Like.*Calc.*Model.Name; not a definitive solution though as names are used often in conditionals that perhaps should be member methods of the
GenLikeCalc classes.
- Renamed LikelihoodCalculationEngine to ReadLikelihoodCalculationEngine to distinguish them clearly from Genotype likelihood calculation engines.
- Changed copy by explicity argument listing to a clone/reflexion solution for casting between genotypers argument collection classes.
- Created GenotypeGivenAllelesUtils to collect methods needed nearly exclusively by the GGA mode.
Tests :
- StandardCallerArgumentCollectionUnitTest (check copy by cloning/reflexion).
- All existing integration and unit tests for modified classes.
-- We no longer use QUAL because it scales insidiously with AC.
-- By default we exclude sites in which NA12878 is polymorphic to prevent overfitting to the knowledgebase.
-- Tweaks to training parameters were required because of the QUAL change.
-- We now test for model convergence instead of specifying the number of iterations at the command line.
-Only works with single-sample vcfs
-As with bams, the user must provide a file mapping the absolute path to
each vcf whose samples are to be renamed to the new sample name for that
vcf. The argument is the same as for bams: --sample_rename_mapping_file,
and the mapping file may contain a mix of bam and vcf files should the
user wish.
-It's an error to attempt to remap the sample names of a multi-sample
or sites-only vcf
-Implemented at the codec level at the instant the vcf header is first
read in to minimize the chances of downstream code examining vcf
headers/records before renaming occurs.
-Integration tests are in sting, unit tests are in picard
-Rev picard et. al. to 1.111.1902
Following reviewers comments the command line interface has been simplified.
All extra strict validations are performed by default (as before) and the
user has to indicate which one he/she does not want to use with --validationTypeToExclude.
Before he/she was able to indicate the only ones to apply with --validationType but that has been scrapped out.
Stories:
- https://www.pivotaltracker.com/story/show/68725164
Changes:
- Removed validateType argument.
- Improved documentation.
- Added some warnning log message on suspicious argument combinations.
Tests:
- ValidateVariantsIntegrationTest#*
-- This results in much more consistent distribution of LOD scores for SNPs and Indels.
-- Removing genotype summary stats since they are now produced by default.
-- Added functionality to specify certain subsets of the training data to be used in Tranche file generation, -good:tranche=true set.vcf
Laura Gauthier
amilev
droazen
Michael McCowan
Valentin Ruano Rubio
MauricioCarneiro
Ryan Poplin
jmthibault79
Khalid Shakir
Mike
kshakir
Eric Banks