ROL
ROL_MeanValueObjective_Def.hpp
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43
44#ifndef ROL_MEANVALUEOBJECTIVE_DEF_HPP
45#define ROL_MEANVALUEOBJECTIVE_DEF_HPP
46
47namespace ROL {
48
49template<typename Real>
51 const Ptr<SampleGenerator<Real>> &sampler) : obj_(obj) {
52 std::vector<Real> param = computeSampleMean(sampler);
53 obj_->setParameter(param);
54}
55
56template<typename Real>
58 obj_->update(x,type,iter);
59}
60
61template<typename Real>
62void MeanValueObjective<Real>::update( const Vector<Real> &x, bool flag, int iter ) {
63 obj_->update(x,flag,iter);
64}
65
66template<typename Real>
67Real MeanValueObjective<Real>::value( const Vector<Real> &x, Real &tol ) {
68 return obj_->value(x,tol);
69}
70
71template<typename Real>
73 obj_->gradient(g,x,tol);
74}
75
76template<typename Real>
78 const Vector<Real> &x, Real &tol ) {
79 obj_->hessVec(hv,v,x,tol);
80}
81
82template<typename Real>
84 const Vector<Real> &x, Real &tol ) {
85 obj_->precond(Pv,v,x,tol);
86}
87
88template<typename Real>
89std::vector<Real> MeanValueObjective<Real>::computeSampleMean(const Ptr<SampleGenerator<Real>> &sampler) const {
90 // Compute mean value of inputs and set parameter in objective
91 int dim = sampler->getMyPoint(0).size(), nsamp = sampler->numMySamples();
92 std::vector<Real> loc(dim), mean(dim), pt(dim);
93 Real wt(0);
94 for (int i = 0; i < nsamp; i++) {
95 pt = sampler->getMyPoint(i);
96 wt = sampler->getMyWeight(i);
97 for (int j = 0; j < dim; j++) {
98 loc[j] += wt*pt[j];
99 }
100 }
101 sampler->sumAll(&loc[0],&mean[0],dim);
102 return mean;
103}
104
105}
106
107#endif
const Ptr< Obj > obj_
std::vector< Real > computeSampleMean(const Ptr< SampleGenerator< Real > > &sampler) const
MeanValueObjective(const Ptr< Objective< Real > > &obj, const Ptr< SampleGenerator< Real > > &sampler)
Real value(const Vector< Real > &x, Real &tol) override
Compute value.
void precond(Vector< Real > &Pv, const Vector< Real > &v, const Vector< Real > &x, Real &tol) override
Apply preconditioner to vector.
const Ptr< Objective< Real > > obj_
void hessVec(Vector< Real > &hv, const Vector< Real > &v, const Vector< Real > &x, Real &tol) override
Apply Hessian approximation to vector.
void update(const Vector< Real > &x, UpdateType type, int iter=-1) override
Update objective function.
void gradient(Vector< Real > &g, const Vector< Real > &x, Real &tol) override
Compute gradient.
Provides the interface to evaluate objective functions.
Defines the linear algebra or vector space interface.
Definition: ROL_Vector.hpp:84
constexpr auto dim