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  • 大小: 8KB
    文件類型: .cpp
    金幣: 1
    下載: 0 次
    發(fā)布日期: 2021-05-26
  • 語言: C/C++
  • 標(biāo)簽:

資源簡介

機(jī)器學(xué)習(xí)，樸素貝葉斯算法分類，c++實現(xiàn)

資源截圖

代碼片段和文件信息 

//?naiveBayesClassify.cpp?:?定義控制臺應(yīng)用程序的入口點。
//

//#include?“stdafx.h“
#include
#include
#include
#include
#include
#include?
//#include

using?namespace?std;

?

//save?the?training?data
typedef?vector>?strDVect;
//save?all?possible?condition?probabilitys
typedef?map>>?thriMap;
//service?for?thriMap
typedef?map>?doubleMap;
typedef?map?strMap;
//save?the?kind?of?aim?attribute?value
typedef?map?aimMap;
//kind?of?every?attribute?including?aim?attribute?value
typedef?map?attMap;
//const?for?denominator?and?numerator
double?K?=?1;
//sample
typedef?vector?sampleVect;


//check?the?three?dimensions?map?and?return?4?states
int?existRecord（thriMap?probstring?aimValuestring?attNamestring?attValue）
{
?thriMap::const_iterator?iterThri?=??prob.find（aimValue）;
?if（iterThri?==?prob.end（））
??return?1;
?doubleMap::const_iterator?iterDouble?=?iterThri->second.find（attName）;
?if（iterDouble?==?iterThri->second.end（））
??return?2;
?strMap::const_iterator?iterSingle?=?iterDouble->second.find（attValue）;
?if（iterSingle?==?iterDouble->second.end（））
??return?3;
?return?4;?
}

void?show（thriMap?prob）
{
?thriMap::iterator?iterThri?=?prob.begin（）;
?for（;iterThri?!=?prob.end（）;?iterThri++）
?{?
??doubleMap::iterator?iterDouble?=?iterThri->second.begin（）;
??for（;iterDouble?!=?iterThri->second.end（）;?iterDouble++）
??{
???strMap::iterator?iterSingle?=?iterDouble->second.begin（）;
???for（;iterSingle?!=?iterDouble->second.end（）;?iterSingle++）
???{
????cout?<first?<first?<first?<second?<???}
??}
?}
}

//get?all?possible?statistics
//three?dimensions?hash?prob?first?key?notes?aim?attribute?valuesecond?key?notes?refence?attribute?name
//third?key?notes?reference?attribute?value?the?value?notes?the?refence?attribute?value?number
void?getConditionStat（strDVect?datasthriMap?&probaimMap?&aimNum）
{
?int?ijkmn;
?m?=?datas.size（）;
?n?=?datas[0].size（）;
???
????doubleMap?doubleMapIns;
?strMap?strMapIns;
?thriMap::iterator?iterThri;
?doubleMap::iterator?iterDouble;
?for（i=1;?i??{
??//save?all?possible?statistics
??for（j?=?0;?j???{
???switch（existRecord（probdatas[i][n-1]datas[0][j]datas[i][j]））
???{
???case?1:
????//must?clear
????strMapIns.clear（）;
????doubleMapIns.clear（）;
????strMapIns.insert（make_pair（datas[i][j]1））;
????doubleMapIns.insert（make_pair（datas[0][j]strMapIns））;
????prob.insert（make_pair（datas[i][n-1]doubleMapIns））;
????break;
???case?2:
????strMapIns.clear（）;
????strMapIns.insert（make_pair（datas[i][j]1））;
????prob.find（datas[i][n-1]）->second.insert（make_pair（datas[0][j]strMapIns））;
????break;
???case?3:
????prob.find（datas[i][n-1]）->second.find（datas[0][j]）->second.insert（make_pair

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