什么是量化交易?
量化交易就是以数学公式和统计数据等为基础来建立数学模型，通过数学模型来进行交易。Quantitative trading relies on highly developed computer and internet technologies
人工智能（Artificial Intelligence，简称AI）是指计算机系统在完成类似人类智力所需的任务时所表现出来的能力。It is a complex technology that continuously adjusts and improves its own algorithm by inputting a large amount of data into the algorithm for learning,thereby continuously optimizing its performance.
class PFLD::Impl{
public:
Impl(){
device_=0;
precision_=0;
power_=0;
memory_=0;
initialized_=false;
}
~Impl(){
landmarker_->releaseModel();
landmarker->releaseSession(session);
}
int LoadModel(const char*root_path);
int ExtractKeypoints(const cv::Mat&img_face,std::vector<cv::Point2f>*keypoints);
std::sharedptr<MNN::Interpreter>landmarker;
const int inputSize_=96;
int device_;
int precision_;
int power_;
int memory_;
MNN::Session*session_=nullptr;
MNN::Tensor*inputtensor=nullptr;
bool initialized_;
};
