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RooCustomizerclass description - source file - inheritance tree (.pdf) class RooCustomizer : public TNamed, public RooPrintable
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Data Members
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Class DescriptionRooCustomizer is a factory class to produce clones of a prototype composite PDF object with the same structure but different leaf servers (parameters or dependents) RooCustomizer supports two kinds of modifications: -> replace(leaf_arg,repl_arg) replaces each occurence of leaf_arg with repl_arg in the composite pdf. -> split(split_arg) is used when building multiple clones of the same prototype. Each occurrence of split_arg is replaceed with a clone of split_arg named split_arg_[MCstate], where [MCstate] is the name of the 'master category state' that indexes the clones to be built. [Example] Splitting is particularly useful when building simultaneous fits to subsets of the data sample with different background properties. In such a case, the user builds a single prototype PDF representing the structure of the signal and background and splits the dataset into categories with different background properties. Using RooCustomizer a PDF for each subfit can be constructed from the prototype that has same structure and signal parameters, but different instances of the background parameters: e.g. ... RooExponential bg("bg","background",x,alpha) ; RooGaussian sig("sig","signal",x,mean,sigma) ; RooAddPdf pdf("pdf","pdf",sig,bg,sigfrac) ; RooDataSet data("data","dataset",RooArgSet(x,runblock),...) RooCategory runblock("runblock","run block") ; runblock.defineType("run1") ; runblock.defineType("run2") ; RooArgSet splitLeafs RooCustomizer cust(pdf,runblock,splitLeafs) cust.split(alpha,runblock) RooAbsPdf* pdf_run1 = cust.build("run1") ; RooAbsPdf* pdf_run2 = cust.build("run2") ; RooSimultaneous simpdf("simpdf","simpdf",RooArgSet(*pdf_run1,*pdf_run2)) If the master category state is a super category, leafs may be split by any subset of that master category. E.g. if the master category is 'A x B', leafs may be split by A, B or AxB. In addition to replacing leaf nodes, RooCustomizer clones all branch nodes that depend directly or indirectly on modified leaf nodes, so that the input pdf is untouched by each build operation. The customizer owns all the branch nodes including the returned top level node, so the customizer should live as longs as the cloned composites are needed. Any leaf nodes that are created by the customizer will be put into the leaf list that is passed into the customizers constructor (splitLeafs in the above example. The list owner is responsible for deleting these leaf nodes after the customizer is deleted. [Advanced techniques] By default the customizer clones the prototype leaf node when splitting a leaf, but the user can feed pre-defined split leafs in leaf list. These leafs must have the name <split_leaf>_<splitcat_label> to be picked up. The list of pre-supplied leafs may be partial, any missing split leafs will be auto generated. Another common construction is to have two prototype PDFs, each to be customized by a separate customizer instance, that share parameters. To ensure that the customized clones also share their respective split leafs, i.e. PDF1(x,y;A) and PDF2(z,A) ---> PDF1_run1(x,y,A_run1) and PDF2_run1(x,y,A_run1) PDF1_run2(x,y,A_run2) and PDF2_run2(x,y,A_run2) feed the same split leaf list into both customizers. In that case the second customizer will pick up the split leafs instantiated by the first customizer and the link between the two PDFs is retained RooCustomizer(const RooAbsArg& pdf, const RooAbsCategoryLValue& masterCat, RooArgSet& splitLeafs) : TNamed(pdf.GetName(),pdf.GetTitle()), _sterile(kFALSE), _masterPdf((RooAbsArg*)&pdf), _masterCat((RooAbsCategoryLValue*)&masterCat), _masterBranchList("masterBranchList"), _masterLeafList("masterLeafList"), _internalCloneBranchList("cloneBranchList"), _cloneNodeList(&splitLeafs) Constructor with masterCat state. Customizers created by this constructor offer the full functionality RooCustomizer(const RooAbsArg& pdf, const char* name) : TNamed(pdf.GetName(),pdf.GetTitle()), _sterile(kTRUE), _name(name), _masterPdf((RooAbsArg*)&pdf), _masterCat(0), _masterBranchList("masterBranchList"), _masterLeafList("masterLeafList"), _internalCloneBranchList("cloneBranchList"), _cloneNodeList(0) Sterile Constructor. Customizers created by this constructor offer only the replace() method. The supplied 'name' is used as suffix for any cloned branch nodes void initialize() Initialization function ~RooCustomizer() Destructor void splitArgs(const RooArgSet& set, const RooAbsCategory& splitCat) Split all args in 'set' by 'splitCat' states. 'splitCats' must be subset of or equal to the master category supplied in the customizer constructor. Splitting is only available on customizers created with a master index category void splitArg(const RooAbsArg& arg, const RooAbsCategory& splitCat) Split 'arg' by 'splitCat' states. 'splitCats' must be subset of or equal to the master category supplied in the customizer constructor. Splitting is only available on customizers created with a master index category void replaceArg(const RooAbsArg& orig, const RooAbsArg& subst) Replace any occurence of arg 'orig' with arg 'subst' RooAbsArg* build(Bool_t verbose) Build a clone of the prototype executing all registered 'replace' rules If verbose is set a message is printed for each leaf or branch node modification. The returned composite arg is owned by the customizer RooAbsArg* build(const char* masterCatState, Bool_t verbose) Build a clone of the prototype executing all registered 'replace' rules and 'split' rules for the masterCat state named 'masterCatState'. If verbose is set a message is printed for each leaf or branch node modification. The returned composite arg is owned by the customizer. This function cannot be called on customizer build with the sterile constructor. RooAbsArg* doBuild(const char* masterCatState, Bool_t verbose) Protected build engine RooAbsArg::setDirtyInhibit(kTRUE) ; void printToStream(ostream& os, PrintOption /*opt*/, TString indent) const void setCloneBranchSet(RooArgSet& cloneBranchSet) Inline Functions
const RooArgSet& cloneBranchList() const
const RooArgSet& cloneLeafList() const
void Print(Option_t* options = "0") const
RooCustomizer RooCustomizer(const RooCustomizer&)
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
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