float TimeSeriesLinearReg::TrainEpoch(const matrix_eig &data) {
matrix_eig X, y;
ModelUtil::FeatureLabelSplit(*this, data, X, y);
Fit(X, y);
matrix_eig y_hat = Predict(X);
return ModelUtil::MeanSqError(y, y_hat);
}
int PredictProb( const std::vector<T>& x, std::map<int, double>& prob ) {
int dimension = scale_info_.dimension();
assert( static_cast<int>( x.size() ) == dimension );
assert( prob.empty() );
if( (libsvm_model_->param.svm_type == C_SVC || libsvm_model_->param.svm_type == NU_SVC)
&& libsvm_model_->probA!=NULL && libsvm_model_->probB!=NULL ) {
std::vector<double> scaled_x;
scale_info_.Scale( x, scaled_x );
struct svm_node* nodes;
nodes = (struct svm_node *) malloc( ( dimension + 1 ) * sizeof(struct svm_node) );
GetSVMNodes( scaled_x, nodes );
int class_num = libsvm_model_->nr_class;
double probs[class_num];
double predict_label = svm_predict_probability( libsvm_model_, nodes, probs );
std::vector<int> class_labels;
GetClassLabels( class_labels );
for( int i = 0; i < class_num; ++i ) {
prob[ class_labels[i] ] = probs[i];
}
free(nodes);
return static_cast<int>( predict_label );
} else {
return Predict( x );
}
}
void CSMMSeqPair::TrainPair(CSeqSet &set)
{
if(clog_detail.back()>NONE)
{
clog << endl << "CPredSMM::TrainPair(" << set.GetName()<<")";
clog << endl << "Elements in Set: " << set.ElementNumber();
clog << endl << "Lambda Grouping\t";
if(m_individual_lambdas)
clog << "INDIVIDUAL_LAMBDAS";
else
clog << "ONE_GROUP";
clog << endl << "Min Count\t" << m_min_count;
clog << endl << "Max Disagreement %\t" << m_max_percent_disagree;
}
assert(m_matrix.size()==CLetter::AlphabetSize()*set.SeqLength()+1);
m_matrix_offset=m_matrix[0];
m_pair_coef.clear();
IdentifyPairCoef(set,m_min_count);
Predict(set);
assert(m_max_percent_disagree<=0.5);
DropPairCoef(set,m_max_percent_disagree);
unsigned count=m_pair_coef.size();
if(m_pair_coef.size()>0)
{
GenerateLambdaGroups(m_individual_lambdas);
set.ConvertToSMMSet(m_smm.TrainingSet(),false,m_pair_coef);
m_smm.TrainRepeater();
ConvertSolution();
}
}
void Physics::Simulate()
{
for (auto itr = physics_objects_.begin(); itr != physics_objects_.end(); )
{
std::shared_ptr<Lame::GameObject> go = (*itr)->gameObject();
if (go && !go->IsDestroying())
{
if ((*itr)->enabled())
{
Vector3 position, velocity;
Predict(*itr, fixed_timestep_, position, velocity);
go->transform().position(position);
(*itr)->velocity(velocity);
}
++itr;
}
else
{
itr = physics_objects_.erase(itr);
}
}
if (LameWorld::Exists())
{
LameWorld::Get().PhysicsUpdate(fixed_timestep_);
}
}
void Physics::Predict(std::shared_ptr<Physics3DComponent> i_comp, const float i_delta_time, Vector3& o_postion, Vector3& o_velocity) const
{
o_postion = i_comp->gameObject()->transform().position();
o_velocity = i_comp->velocity();
const Vector3 acceleration = i_comp->constant_acceleration() + gravity() * i_comp->gravity_multiplier();
Predict(i_delta_time, o_postion, o_velocity, acceleration);
}
// Compute the a posteriori estimate of the system state, as well as
// the a posteriori estimate error variance. Version for
// one-dimensional systems without control input on the system.
//
// @param phiValue State transition gain.
// @param processNoiseVariance Process noise variance.
// @param measurement Measurement value.
// @param measurementsGain Measurements gain.
// @param measurementsNoiseVariance Measurements noise variance.
//
// @return
// 0 if OK
// -1 if problems arose
//
int SimpleKalmanFilter::Compute( const double& phiValue,
const double& processNoiseVariance,
const double& measurement,
const double& measurementsGain,
const double& measurementsNoiseVariance )
throw(InvalidSolver)
{
try
{
Predict( phiValue,
xhat(0),
processNoiseVariance );
Correct( measurement,
measurementsGain,
measurementsNoiseVariance );
}
catch(InvalidSolver e)
{
GPSTK_THROW(e);
return -1;
}
return 0;
} // End of method 'SimpleKalmanFilter::Compute()'
FloatT GradientBoostingForest::FitError()
{
// puts("FitError do");
FloatT ret =0.0;
assert(NULL != m_pInstancePool);
FloatT sum_weight = 0.0;
#pragma omp parallel for schedule(static) reduction(+:sum_weight)
for(int i=0;i<m_pInstancePool->Size();i++)
{
sum_weight += m_pInstancePool->GetInstance(i).weight;
}
#pragma omp parallel for schedule(static) reduction(+:ret)
for(int i=0;i<m_pInstancePool->Size();i++)
{
FloatT predict;
if(0 != Predict(m_pInstancePool->GetInstance(i).X, predict))
{
Comm::LogErr("GradientBoostingForest::FitError fail! Predict fail");
}
ret = ret + ((m_pInstancePool->GetInstance(i).ys - predict) *
(m_pInstancePool->GetInstance(i).ys - predict)) *
m_pInstancePool->GetInstance(i).weight;
}
// puts("FitError done");
return sqrt(ret / sum_weight);
}
// Compute the a posteriori estimate of the system state, as well as
// the a posteriori estimate error covariance matrix. This version
// assumes that no control inputs act on the system.
//
// @param phiMatrix State transition matrix.
// @param processNoiseCovariance Process noise covariance matrix.
// @param measurements Measurements vector.
// @param measurementsMatrix Measurements matrix. Called geometry
// matrix in GNSS.
// @param measurementsNoiseCovariance Measurements noise covariance
// matrix.
//
// @return
// 0 if OK
// -1 if problems arose
//
int SimpleKalmanFilter::Compute( const Matrix<double>& phiMatrix,
const Matrix<double>& processNoiseCovariance,
const Vector<double>& measurements,
const Matrix<double>& measurementsMatrix,
const Matrix<double>& measurementsNoiseCovariance )
throw(InvalidSolver)
{
try
{
Predict( phiMatrix,
xhat,
processNoiseCovariance );
Correct( measurements,
measurementsMatrix,
measurementsNoiseCovariance );
}
catch(InvalidSolver e)
{
GPSTK_THROW(e);
return -1;
}
return 0;
} // End of method 'SimpleKalmanFilter::Compute()'
ValueType RegressionTree::Predict(const Node *root, const Tuple &t) {
if (root->leaf) {
return root->pred;
}
if (t.feature[root->index] == kUnknownValue) {
if (root->child[Node::UNKNOWN]) {
return Predict(root->child[Node::UNKNOWN], t);
} else {
return root->pred;
}
} else if (t.feature[root->index] < root->value) {
return Predict(root->child[Node::LT], t);
} else {
return Predict(root->child[Node::GE], t);
}
}
/**
\brief Run an iteration of the tracker loop.
Predict and correct, adjusting precision and stepsize as necessary.
\return Success if the step was successful, and a non-success code if something went wrong, such as a linear algebra failure or AMP Criterion violation.
*/
SuccessCode TrackerIteration() const override
{
static_assert(std::is_same< typename Eigen::NumTraits<RT>::Real,
typename Eigen::NumTraits<CT>::Real>::value,
"underlying complex type and the type for comparisons must match");
this->NotifyObservers(NewStep<EmitterType >(*this));
Vec<CT>& predicted_space = std::get<Vec<CT> >(this->temporary_space_); // this will be populated in the Predict step
Vec<CT>& current_space = std::get<Vec<CT> >(this->current_space_); // the thing we ultimately wish to update
CT current_time = CT(this->current_time_);
CT delta_t = CT(this->delta_t_);
SuccessCode predictor_code = Predict(predicted_space, current_space, current_time, delta_t);
if (predictor_code!=SuccessCode::Success)
{
this->NotifyObservers(FirstStepPredictorMatrixSolveFailure<EmitterType >(*this));
this->next_stepsize_ = this->stepping_config_.step_size_fail_factor*this->current_stepsize_;
UpdateStepsize();
return predictor_code;
}
this->NotifyObservers(SuccessfulPredict<EmitterType , CT>(*this, predicted_space));
Vec<CT>& tentative_next_space = std::get<Vec<CT> >(this->tentative_space_); // this will be populated in the Correct step
CT tentative_next_time = current_time + delta_t;
SuccessCode corrector_code = Correct(tentative_next_space,
predicted_space,
tentative_next_time);
if (corrector_code == SuccessCode::GoingToInfinity)
{
// there is no corrective action possible...
return corrector_code;
}
else if (corrector_code!=SuccessCode::Success)
{
this->NotifyObservers(CorrectorMatrixSolveFailure<EmitterType >(*this));
this->next_stepsize_ = this->stepping_config_.step_size_fail_factor*this->current_stepsize_;
UpdateStepsize();
return corrector_code;
}
this->NotifyObservers(SuccessfulCorrect<EmitterType , CT>(*this, tentative_next_space));
// copy the tentative vector into the current space vector;
current_space = tentative_next_space;
return SuccessCode::Success;
}
FloatT GradientBoostingForest::TestError()
{
// puts("TestError do");
FloatT ret =0.0;
if(NULL == m_pTestInstancePool)
{
Comm::LogErr("GradientBoostingForest::TestError fail m_pTestInstancePool is NULL");
return -1;
}
FloatT sum_weight = 0.0;
#pragma omp parallel for schedule(static) reduction(+:sum_weight)
for(int i=0;i<m_pTestInstancePool->Size();i++)
{
sum_weight += m_pTestInstancePool->GetInstance(i).weight;
}
FloatT lim[8] = {0.5,0.6,0.7,0.8,0.9,0.95,0.97,0.99};
int cnt[8] = {0,0,0,0,0,0,0,0};
int tot[8] = {0,0,0,0,0,0,0,0};
#pragma omp parallel for schedule(static) reduction(+:ret)
for(int i=0;i<m_pTestInstancePool->Size();i++)
{
FloatT predict;
if(0 != Predict(m_pTestInstancePool->GetInstance(i).X, predict))
{
Comm::LogErr("GradientBoostingForest::TestError fail! Predict fail!");
}
FloatT tmp = (m_pTestInstancePool->GetInstance(i).ys - predict);
// printf("%s predict:%f\n",m_pTestInstancePool->GetInstance(i).DebugStr().c_str(),predict);
for(int j=0;j<8;j++)
{
if( predict >= lim[j])
{
if(m_pTestInstancePool->GetInstance(i).ys == 1)
#pragma omp atomic
cnt[j]++;
#pragma omp atomic
tot[j]++;
}
}
tmp = tmp * tmp;
ret = ret + tmp * m_pTestInstancePool->GetInstance(i).weight;
}
ret = sqrt(ret / sum_weight);
for(int i=0;i<8;i++)
{
printf("predict >= %f cnt = %d tot = %d cnt/tot = %f\n",lim[i], cnt[i], tot[i], cnt[i]*1.0/tot[i]);
}
//printf("cnt = %d tot = %d\n",cnt,tot);
// puts("TestError done");
return ret;
}
void Model::Predict( const char* datsetPath, const char* errDatsetPath )
{
SampleSet samples, errorSample;
samples.Read(datsetPath);
Predict(samples, errorSample);
if (errDatsetPath != NULL)
errorSample.Write(errDatsetPath);
}
int SignClassifier::PredictSingle(const Mat &image)
{
vector<Mat> image_vec(1, image);
vector<int> labels;
if (!Predict(image_vec, &labels))
{
return -1;
}
return labels[0];
}
int main(int argc, char* argv[])
{
int wait;
// Train the neural network with the samples
trainMachine();
// Now try predicting some values with the trained network
Predict(1.0,1.3);
Predict(0.7,0.5);
Predict(0.1,0.2);
Predict(0.2,0.2);
Predict(0.3,0.3);
//I'll wait for an integer. :)
scanf("%d",&wait);
return 0;
}
void GBDT::LogLossProcess(DataVector *d, size_t samples, int i) {
#ifdef USE_OPENMP
#pragma omp parallel for
#endif
for (size_t j = 0; j < samples; ++j) {
ValueType p = Predict(*(*d)[j], i);
(*d)[j]->target =
static_cast<ValueType>(LogitLossGradient((*d)[j]->label, p));
}
if (g_conf.debug) {
Auc auc;
DataVector::iterator iter = d->begin();
for ( ; iter != d->end(); ++iter) {
ValueType p = Logit(Predict(**iter, i));
auc.Add(p, (*iter)->label);
}
std::cout << "auc: " << auc.CalculateAuc() << std::endl;
}
}
extern void regtestNew(void)
{
static const regSample Samples[] = {
{ 2.0f, 3.0f },
{ 3.0f, 6.7f },
{ 4.0f, 7.0f },
{ 5.0f, 8.0f },
{ 6.0f, 9.0f },
};
reg * pReg = regNew();
regSamples(pReg, Samples, sizeof(Samples)/sizeof(Samples[0]));
Predict(pReg, 5.0f);
Predict(pReg, 6.0f);
Predict(pReg, 7.0f);
Predict(pReg, 8.0f);
Predict(pReg, 9.0f);
}
/*!
\fn CvFaceSVMClassifier::Training_error(CvMat * train_data, CvMat * labels) const
*/
CvScalar CvFaceSVMClassifier::Training_error(CvMat * train_data, CvMat * labels) const
{
CvSize size = cvGetSize(labels);
int nsamples = size.width * size.height;
int numpositive = 0, numnegative = 0;
for(int i = 0; i < nsamples; i++)
{
double value = cvGetReal1D( labels, i );
if ( value == 1.0 )
numpositive++;
else if( value == 2.0 )
numnegative++;
}
assert((numpositive+numnegative) == nsamples );
size = cvGetSize( train_data );
int nelements = size.height;
CvMat * sample = cvCreateMat(1, nelements, CV_32FC1);
int numerror = 0, numtruepositive = 0, numfalsepositive = 0;
for(int i = 0; i < nsamples; i++)
{
cvGetRow( train_data, sample, i );
double pre_label = Predict( sample );
double label = cvGetReal1D( labels, i );
if((pre_label == 1.0)&&(label == 1.0))
{
numtruepositive++;
}
if(pre_label != label)
{
if((pre_label == 1.0)&&(label == 2.0))
{
numfalsepositive++;
}
//printf("%d ", i);
numerror++;
}
}
printf("\n\n");
double error = (double)numerror/(double)nsamples;
double tp_rate = (double)numtruepositive/(double)numpositive;
double fp_rate = (double)numfalsepositive/(double)numnegative;
cvReleaseMat(&sample);
CvScalar scalar = cvScalar(error, tp_rate, fp_rate, 0);
return scalar;
}
/*!
\fn CvFaceSVMClassifier::Training_error(CvGaborResponseData & gabordata, CvGaborFeaturePool & new_features) const
*/
CvScalar CvFaceSVMClassifier::Training_error(CvGaborResponseData & gabordata, CvGaborFeaturePool & new_features) const
{
CvMat * train_data = GetDataFromFeatures( gabordata, new_features );
CvMat * labels = GetLabelsFromFeatures( gabordata, new_features );
CvSize size = cvGetSize(labels);
int nsamples = size.width * size.height;
int numpositive = 0, numnegative = 0;
for(int i = 0; i < nsamples; i++)
{
double value = cvGetReal1D( labels, i );
if ( value == 1.0 )
numpositive++;
else if( value == 2.0 )
numnegative++;
}
assert((numpositive+numnegative) == nsamples );
int nelements = new_features.getSize();
CvMat * sample = cvCreateMat(1, nelements, CV_32FC1);
int numerror = 0, numtruepositive = 0, numfalsepositive = 0;
for(int i = 0; i < nsamples; i++)
{
cvGetRow( train_data, sample, i );
double pre_label = Predict( sample );
double label = cvGetReal1D( labels, i );
if((pre_label == 1.0)&&(label == 1.0))
{
numtruepositive++;
}
if(pre_label != label)
{
if((pre_label == 1.0)&&(label == 2.0))
numfalsepositive++;
numerror++;
}
}
double error = (double)numerror/(double)nsamples;
double tp_rate = (double)numtruepositive/(double)numpositive;
double fp_rate = (double)numfalsepositive/(double)numnegative;
cvReleaseMat(&sample);
cvReleaseMat(&train_data);
cvReleaseMat(&labels);
CvScalar scalar = cvScalar(error, tp_rate, fp_rate, 0);
return scalar;
}
float NeuralNets::_validate(int start, int end){
// all shared data is read-only, so there is no need to lock
float res = 0.0 ;
for (int i = start; i < end; i++) {
Eigen::ArrayXf y1 = _data_matrix.row(i).array();
int predict = Predict(y1);
if (predict == _labels[i]) {
res += 1;
}
}
return res / (end-start + 1);
}
/* Return the top N predictions. */
std::vector<Prediction> Deep_Classifier::Classify(const cv::Mat& img, int N) {
std::vector<float> output = Predict(img);
std::vector<int> maxN = Argmax(output, N);
std::vector<Prediction> predictions;
for (int i = 0; i < N; ++i) {
int idx = maxN[i];
predictions.push_back(std::make_pair(labels_[idx], output[idx]));
}
return predictions;
}
void GBDT::SquareLossProcess(DataVector *d, size_t samples, int i) {
#ifdef USE_OPENMP
#pragma omp parallel for
#endif
for (size_t j = 0; j < samples; ++j) {
ValueType p = Predict(*(*d)[j], i);
(*d)[j]->target = (*d)[j]->label - p;
}
if (g_conf.debug) {
double s = 0;
double c = 0;
DataVector::iterator iter = d->begin();
for ( ; iter != d->end(); ++iter) {
ValueType p = Predict(**iter, i);
s += Squared((*iter)->label - p) * (*iter)->weight;
c += (*iter)->weight;
}
std::cout << "rmse: " << std::sqrt(s / c) << std::endl;
}
}
void GBDT::LADLossProcess(DataVector *d, size_t samples, int i) {
#ifdef USE_OPENMP
#pragma omp parallel for
#endif
for (size_t j = 0; j < samples; ++j) {
ValueType p = Predict(*(*d)[j], i);
(*d)[j]->residual = (*d)[j]->label - p;
(*d)[j]->target = Sign((*d)[j]->residual);
}
if (g_conf.debug) {
double s = 0;
double c = 0;
for (auto iter = d->begin(); iter != d->end(); ++iter) {
ValueType p = Predict(**iter, i);
s += Abs((*iter)->label - p) * (*iter)->weight;
c += (*iter)->weight;
}
std::cout << "mae: " << s/c << std::endl;
}
}
int main(int argc, char *argv[])
{
MultiVariateSet *setVariate = NULL;
int i;
float* x;
setVariate = CreateMultiVariateSet("data.dat");
PrintMultiVariateSet(setVariate);
printf("\n");
printf("Covariance = %6.3f\n", ComputeCovariance(setVariate));
printf("Correlation = %6.3f\n", ComputeCorrelation(setVariate));
x = setVariate->elem[0];
for (i = 0; i < setVariate->cols; i++,x++)
{
printf("Predict value : %6.3f", Predict(setVariate, *x));
printf(" ei = %6.3f\n", *(setVariate->elem[1] + i) - Predict(setVariate, *x));
}
DestoryMultiVariateSet(setVariate);
return 0;
}
int testing(LeNet5 *lenet, image *test_data, uint8 *test_label,int total_size)
{
int right = 0, percent = 0;
for (int i = 0; i < total_size; ++i)
{
uint8 l = test_label[i];
int p = Predict(lenet, test_data[i], 10);
right += l == p;
if (i * 100 / total_size > percent)
printf("test:%2d%%\n", percent = i * 100 / total_size);
}
return right;
}
/* Return the top N predictions. */
std::vector<Prediction> Classifier::Classify(const cv::Mat& img, int N) {
std::vector<float> output = Predict(img);
std::vector<int> maxN = Argmax(output, std::min((float)N, (float)output.size()));
std::vector<Prediction> predictions;
for (int i = 0; i < std::min((float)N, (float)output.size()); ++i) {
int idx = maxN[i];
//predictions.push_back(std::make_pair(labels_[idx], output[idx]));
predictions.push_back(std::make_pair(idx, output[idx]));
}
return predictions;
}
REAL CMetaModel::Test( const REAL* prInputs, const REAL* prOutputs, int count )
{
vector<REAL> vcOutputs( GetOutputs() );
//calculate the error function under the current weight
REAL rError = 0;
for( int i=0; i<count; i++ ){
Predict( prInputs + i*GetInputs(), &vcOutputs[0] );
rError += inner_product( vcOutputs.begin(), vcOutputs.end(), prOutputs, 0.0,
plus<REAL>(), minus_pow<REAL>(2.0) ) / GetOutputs();
}
return rError/count;
}
void TRecLinReg::Learn(const TFltV& Sample, const double& SampleVal) {
double PredVal = Predict(Sample);
TVector x(Sample);
TVector Px = P * x;
double xPx = Px.DotProduct(Sample);
/*
* linreg.P = (linreg.P - (Px * Px') / (linreg.lambda + xPx)) / linreg.lambda;
* linreg.w = linreg.w + Px*((y - y_hat)/(linreg.lambda + xPx));
*/
P = (P - (Px*Px.GetT()) / (ForgetFact + xPx)) / ForgetFact;
Coeffs += Px*((SampleVal - PredVal) / (ForgetFact + xPx));
}
int GradientBoostingForest::BatchPredict(InstancePool * pInstancepool, std::vector<FloatT> &vecPredict)
{
for(int i = 0; i < pInstancepool->Size(); i++)
{
FloatT predict;
int ret = Predict(pInstancepool->GetInstance(i).X, predict);
if(ret != 0)
{
Comm::LogErr("GradientBoostingForest::BatchPredict fail i = %d Instance = %s", i, pInstancepool->GetInstance(i).DebugStr().c_str());
return ret;
}
vecPredict.push_back(predict);
}
return 0;
}
int main(int argc, char const *argv[])
{
printf("请输入年份\n");
scanf("%d",&year);
printf("输入月份\n");
scanf("%d",&month);
printf("输入日期\n");
scanf("%d",&day);
if(Check())
Predict();
else
printf("Date illegal!\n");
return 0;
}
SuccessCode Step(config::Predictor predictor_choice,
Vec<ComplexType> & next_space, ComplexType & next_time,
System & sys,
Vec<ComplexType> const& current_space, ComplexType current_time,
ComplexType const& delta_t,
RealType & condition_number_estimate,
unsigned & num_steps_since_last_condition_number_computation,
unsigned frequency_of_CN_estimation, PrecisionType prec_type,
RealType const& tracking_tolerance,
RealType const& path_truncation_threshold,
unsigned min_num_newton_iterations,
unsigned max_num_newton_iterations,
config::AdaptiveMultiplePrecisionConfig const& AMP_config)
{
SuccessCode predictor_code = Predict(next_space,
sys,
current_space, current_time,
delta_t,
condition_number_estimate,
num_steps_since_last_condition_number_computation,
frequency_of_CN_estimation, prec_type,
tracking_tolerance,
AMP_config);
if (predictor_code!=SuccessCode::Success)
return predictor_code;
next_time = current_time + delta_t;
SuccessCode corrector_code = Correct(next_space,
sys,
current_space, // pass by value to get a copy of it
next_time,
prec_type,
tracking_tolerance,
path_truncation_threshold,
min_num_newton_iterations,
max_num_newton_iterations,
AMP_config);
if (corrector_code!=SuccessCode::Success)
return corrector_code;
return SuccessCode::Success;
}