ITK
6.0.0
Insight Toolkit
|
#include <itkMaximumRatioDecisionRule.h>
A decision rule that operates as a frequentest's approximation to Bayes rule.
MaximumRatioDecisionRule returns the class label using a Bayesian style decision rule. The discriminant scores are evaluated in the context of class priors. If the discriminant scores are actual conditional probabilities (likelihoods) and the class priors are actual a priori class probabilities, then this decision rule operates as Bayes rule, returning the class \(i\) if \(p(x|i) p(i) > p(x|j) p(j)\) for all class \(j\). The discriminant scores and priors are not required to be true probabilities.
This class is named the MaximumRatioDecisionRule as it can be implemented as returning the class \(i\) if \(\frac{p(x|i)}{p(x|j)} > \frac{p(j)}{p(i)}\) for all class \(j\).
A priori values need to be set before calling the Evaluate method. If they are not set, a uniform prior is assumed.
Definition at line 59 of file itkMaximumRatioDecisionRule.h.
Public Member Functions | |
ClassIdentifierType | Evaluate (const MembershipVectorType &discriminantScores) const override |
const char * | GetNameOfClass () const override |
virtual const PriorProbabilityVectorType & | GetPriorProbabilities () const |
void | SetPriorProbabilities (const PriorProbabilityVectorType &p) |
virtual ClassIdentifierType | Evaluate (const MembershipVectorType &discriminantScores) const =0 |
const char * | GetNameOfClass () const override |
Public Member Functions inherited from itk::Object | |
unsigned long | AddObserver (const EventObject &event, Command *cmd) const |
unsigned long | AddObserver (const EventObject &event, std::function< void(const EventObject &)> function) const |
LightObject::Pointer | CreateAnother () const override |
virtual void | DebugOff () const |
virtual void | DebugOn () const |
Command * | GetCommand (unsigned long tag) |
bool | GetDebug () const |
MetaDataDictionary & | GetMetaDataDictionary () |
const MetaDataDictionary & | GetMetaDataDictionary () const |
virtual ModifiedTimeType | GetMTime () const |
const char * | GetNameOfClass () const override |
virtual const TimeStamp & | GetTimeStamp () const |
bool | HasObserver (const EventObject &event) const |
void | InvokeEvent (const EventObject &) |
void | InvokeEvent (const EventObject &) const |
virtual void | Modified () const |
void | Register () const override |
void | RemoveAllObservers () |
void | RemoveObserver (unsigned long tag) const |
void | SetDebug (bool debugFlag) const |
void | SetReferenceCount (int) override |
void | UnRegister () const noexcept override |
void | SetMetaDataDictionary (const MetaDataDictionary &rhs) |
void | SetMetaDataDictionary (MetaDataDictionary &&rrhs) |
virtual void | SetObjectName (std::string _arg) |
virtual const std::string & | GetObjectName () const |
Public Member Functions inherited from itk::LightObject | |
Pointer | Clone () const |
virtual Pointer | CreateAnother () const |
virtual void | Delete () |
virtual const char * | GetNameOfClass () const |
virtual int | GetReferenceCount () const |
void | Print (std::ostream &os, Indent indent=0) const |
virtual void | Register () const |
virtual void | SetReferenceCount (int) |
virtual void | UnRegister () const noexcept |
Static Public Member Functions | |
static Pointer | New () |
Static Public Member Functions inherited from itk::Object | |
static bool | GetGlobalWarningDisplay () |
static void | GlobalWarningDisplayOff () |
static void | GlobalWarningDisplayOn () |
static Pointer | New () |
static void | SetGlobalWarningDisplay (bool val) |
Static Public Member Functions inherited from itk::LightObject | |
static void | BreakOnError () |
static Pointer | New () |
Protected Member Functions | |
MaximumRatioDecisionRule () | |
void | PrintSelf (std::ostream &os, Indent indent) const override |
~MaximumRatioDecisionRule () override=default | |
Protected Member Functions inherited from itk::Statistics::DecisionRule | |
DecisionRule () | |
~DecisionRule () override | |
Protected Member Functions inherited from itk::Object | |
Object () | |
bool | PrintObservers (std::ostream &os, Indent indent) const |
void | PrintSelf (std::ostream &os, Indent indent) const override |
virtual void | SetTimeStamp (const TimeStamp &timeStamp) |
~Object () override | |
Protected Member Functions inherited from itk::LightObject | |
virtual LightObject::Pointer | InternalClone () const |
LightObject () | |
virtual void | PrintHeader (std::ostream &os, Indent indent) const |
virtual void | PrintSelf (std::ostream &os, Indent indent) const |
virtual void | PrintTrailer (std::ostream &os, Indent indent) const |
virtual | ~LightObject () |
Private Attributes | |
PriorProbabilityVectorType | m_PriorProbabilities {} |
Additional Inherited Members | |
Protected Attributes inherited from itk::LightObject | |
std::atomic< int > | m_ReferenceCount {} |
using itk::Statistics::MaximumRatioDecisionRule::ClassIdentifierType = Superclass::ClassIdentifierType |
Types for class identifiers.
Definition at line 80 of file itkMaximumRatioDecisionRule.h.
using itk::Statistics::MaximumRatioDecisionRule::MembershipValueType = Superclass::MembershipValueType |
Types for discriminant values and vectors.
Definition at line 76 of file itkMaximumRatioDecisionRule.h.
using itk::Statistics::MaximumRatioDecisionRule::MembershipVectorType = Superclass::MembershipVectorType |
Definition at line 77 of file itkMaximumRatioDecisionRule.h.
Definition at line 67 of file itkMaximumRatioDecisionRule.h.
Types for priors and values
Definition at line 83 of file itkMaximumRatioDecisionRule.h.
using itk::Statistics::MaximumRatioDecisionRule::PriorProbabilityVectorSizeType = PriorProbabilityVectorType::size_type |
Definition at line 85 of file itkMaximumRatioDecisionRule.h.
using itk::Statistics::MaximumRatioDecisionRule::PriorProbabilityVectorType = std::vector<PriorProbabilityValueType> |
Definition at line 84 of file itkMaximumRatioDecisionRule.h.
Standard class type aliases
Definition at line 65 of file itkMaximumRatioDecisionRule.h.
Definition at line 66 of file itkMaximumRatioDecisionRule.h.
|
protected |
|
overrideprotecteddefault |
|
overridevirtual |
Evaluate the decision rule \(p(x|i) p(i) > p(x|j) p(j)\). Prior probabilities need to be set before calling Evaluate() using the SetPriorProbabilities() method (otherwise a uniform prior is assumed). Parameter to Evaluate() is the discriminant score in the form of a likelihood \(p(x|i)\).
Implements itk::Statistics::DecisionRule.
|
overridevirtual |
Reimplemented from itk::Statistics::DecisionRule.
|
virtual |
Get the prior probabilities.
|
static |
Standard New() method support
|
overrideprotectedvirtual |
Methods invoked by Print() to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
Reimplemented from itk::Object.
void itk::Statistics::MaximumRatioDecisionRule::SetPriorProbabilities | ( | const PriorProbabilityVectorType & | p | ) |
Set the prior probabilities used in evaluating \(p(x|i) p(i) > p(x|j) p(j)\). The likelihoods are set using the Evaluate() method. SetPriorProbabilities needs to be called before Evaluate(). If not set, assumes a uniform prior.
|
private |
Definition at line 114 of file itkMaximumRatioDecisionRule.h.