什么是量化交易？

　　量化交易（Quantitative Trading）是通過數(shù)學模型和計算機算法對金融市場進行分析和預測，And based on this,a trading strategy is developed for investment trading.與傳統(tǒng)的基本面分析、技術分析等方法不同，Quantitative trading emphasizes the use of a large amount of data and scientific methods for research,reducing the impact of human factors and improving the efficiency and accuracy of trading.

　　量化交易的特征在于，它是一種基于數(shù)據(jù)和科學方法的交易方式，通常涉及大量數(shù)據(jù)分析、統(tǒng)計學、計算機科學等知識領域。Compared with traditional trading,quantitative trading uses more sophisticated and efficient trading strategies,which can more quickly obtain market information,analyze Market trend and laws,and make corresponding trading decisions.

　　int PFLD::Impl::LoadModel(const char*root_path){

　　std::string model_file=std::string(root_path)+"/pfld-lite.mnn";

　　landmarker_=std::shared_ptr<MNN::Interpreter>(MNN::Interpreter::createFromFile(model_file.c_str()));

　　MNN::ScheduleConfig config;

　　config.numThread=1;

　　config.type=static_cast<MNNForwardType>(device_);

　　MNN::BackendConfig backendConfig;

　　backendConfig.precision=(MNN::BackendConfig::PrecisionMode)precision_;

　　backendConfig.power=(MNN::BackendConfig::PowerMode)power_;

　　backendConfig.memory=(MNN::BackendConfig::MemoryMode)memory_;

　　config.backendConfig=&backendConfig;

　　session_=landmarker_->createSession(config);

　　//nhwc to nchw

　　std::vector<int>dims{1,inputSize_,inputSize_,3};

　　input_tensor_=MNN::Tensor::create<float>(dims,NULL,MNN::Tensor::TENSORFLOW);

　　initialized_=true;

　　return 0;

　　}