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C++實(shí)現(xiàn)樸素貝葉斯分類器, 代碼干凈, 整潔, 有示例, 有注釋, 具有良好的封裝性, 可直接遷移使用

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代碼片段和文件信息 


#include?“LBayesClassifier.h“

#include?

#include?
using?std::map;
#include?
using?std::vector;

///?@brief?貝葉斯分類器虛基類
class?CBayesClassifier
{
public:
????///?@brief?析構(gòu)函數(shù)
????virtual?~CBayesClassifier（）?=?0{}

????///?@brief?訓(xùn)練模型
????///?@param[in]?problem?貝葉斯問題
????///?@return?成功返回true?失敗返回false?參數(shù)錯(cuò)誤的情況下會(huì)返回false
????virtual?bool?TrainModel（IN?const?LBayesProblem&?problem）?=?0;

????///?@brief?使用訓(xùn)練好的模型進(jìn)行預(yù)測(cè)
????///??
????///?請(qǐng)保證需要預(yù)測(cè)的樣本的特征長(zhǎng)度和訓(xùn)練樣本的特征長(zhǎng)度相同
????///?@param[in]?sample?需要預(yù)測(cè)的樣本
????///?@param[out]?pClassValue?存儲(chǔ)預(yù)測(cè)結(jié)果?不能為0
????///?@return?成功預(yù)測(cè)返回true?失敗返回false?參數(shù)錯(cuò)誤或模型未訓(xùn)練的情況下會(huì)返回false
????virtual?bool?Predict（IN?const?LBayesMatrix&?sample?OUT?int*?pClassValue）?=?0;
};

///?@brief?特征類別計(jì)數(shù)類
class?CFeatureClassCount
{
public:
????///?@brief?將指定特征的指定的類別計(jì)數(shù)加1
????///?@param[in]?featureValue?特征值
????///?@param[in]?classValue?類別值
????void?CountInc（IN?int?featureValue?IN?int?classValue）
????{
????????m_featureClassMap[featureValue][classValue]++;
????}

????///?@brief?獲取指定特征的指定類別的計(jì)數(shù)
????///?@param[in]?featureValue?特征值
????///?@param[in]?classValue?類別值
????///?@return?類別的計(jì)數(shù)
????unsigned?int?GetCount（IN?int?featureValue?IN?int?classValue）
????{
????????return?m_featureClassMap[featureValue][classValue];
????}

????///?@brief?獲取指定特征的總計(jì)數(shù)
????///?@param[in]?featureValue?特征值
????///?@return?特征值得總計(jì)數(shù)
????unsigned?int?GetTotalCount（IN?int?featureValue）
????{
????????auto?classMap?=?m_featureClassMap[featureValue];
????????unsigned?int?totalCount?=?0;
????????for?（auto?iter?=?classMap.begin（）;?iter?!=?classMap.end（）;?iter++）
????????{
????????????totalCount?+=?iter->second;
????????}

????????return?totalCount;
????}

????///?@brief?清除數(shù)據(jù)
????void?Clear（）
????{
????????m_featureClassMap.clear（）;
????}

private:
????map>?m_featureClassMap;?///>
};

///?@brief?貝葉斯分類器（離散）實(shí)現(xiàn)類
class?CBayesClassifierDiscrete?:?public?CBayesClassifier
{????
public:
????///?@brief?構(gòu)造函數(shù)
????CBayesClassifierDiscrete（）
????{
????????m_featureCount?=?0;
????????m_sampleCount?=?0;
????}

????///?@brief?析構(gòu)函數(shù)
????~CBayesClassifierDiscrete（）
????{

????}

????///?@brief?訓(xùn)練模型
????///?@param[in]?problem?貝葉斯問題
????///?@return?成功返回true?失敗返回false?參數(shù)錯(cuò)誤的情況下會(huì)返回false
????virtual?bool?TrainModel（IN?const?LBayesProblem&?problem）
????{
????????//?進(jìn)行參數(shù)檢查
????????if?（problem.XMatrix.ColumnLen?????????????return?false;
????????if?（problem.XMatrix.RowLen?????????????return?false;
????????if?（problem.YVector.ColumnLen?!=?1）
????????????return?false;
????????if?（problem.XMatrix.RowLen?!=?problem.YVector.RowLen）
????????????return?false;

????????m_sampleClassCount.clear（）;
????????m_featureClassCountList.clear（）;
????????m_sampleCount?=?problem.XMatrix.RowLen;
????????m_featureCount?=?problem.XMatrix.ColumnLen;
????????for?（unsigned?int?i?=?0;?i?????????{
????????????m_featureClassCount

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????14429??2015-12-29?16:14??NativeBayes\LBayesClassifier.cpp

?????文件???????3612??2016-03-17?10:57??NativeBayes\LBayesClassifier.h

?????文件??????14193??2016-02-29?15:00??NativeBayes\LMatrix.h

?????文件???????1245??2016-03-17?10:57??NativeBayes\main.cpp

?????文件????????888??2016-03-17?10:56??NativeBayes\NativeBayes.sln

????..A..H.?????12800??2016-03-17?10:58??NativeBayes\NativeBayes.suo

?????文件???????3393??2016-03-17?10:57??NativeBayes\NativeBayes.vcxproj

?????文件???????1280??2016-03-17?10:57??NativeBayes\NativeBayes.vcxproj.filters

?????文件????????143??2016-03-17?10:56??NativeBayes\NativeBayes.vcxproj.user

?????目錄??????????0??2016-03-17?10:58??NativeBayes

-----------?---------??----------?-----??----

????????????????51983????????????????????10


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