?? aprioriview.cpp
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// AprioriView.cpp : implementation of the CAprioriView class
//
#include "stdafx.h"
#include "Apriori.h"
#include "time.h"
#include "AprioriSet.h"
#include "AprioriDoc.h"
#include "AprioriView.h"
#include "SetPara.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAprioriView
IMPLEMENT_DYNCREATE(CAprioriView, CRecordView)
BEGIN_MESSAGE_MAP(CAprioriView, CRecordView)
//{{AFX_MSG_MAP(CAprioriView)
ON_BN_CLICKED(IDC_Bn_FreqItem, OnBnFreqItem)
ON_COMMAND(ID_Parameter, OnParameter)
//}}AFX_MSG_MAP
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CRecordView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CRecordView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CRecordView::OnFilePrintPreview)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CAprioriView construction/destruction
CAprioriView::CAprioriView()
: CRecordView(CAprioriView::IDD)
{
//{{AFX_DATA_INIT(CAprioriView)
m_pSet = NULL;
nAllFreqItem=0;
//}}AFX_DATA_INIT
// TODO: add construction code here
}
CAprioriView::~CAprioriView()
{
}
void CAprioriView::DoDataExchange(CDataExchange* pDX)
{
CRecordView::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAprioriView)
DDX_Control(pDX, IDC_List_FreqItem, m_List_FreqItem);
//}}AFX_DATA_MAP
}
BOOL CAprioriView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
return CRecordView::PreCreateWindow(cs);
}
void CAprioriView::OnInitialUpdate()
{
m_pSet = &GetDocument()->m_aprioriSet;
CRecordView::OnInitialUpdate();
GetParentFrame()->RecalcLayout();
ResizeParentToFit();
}
/////////////////////////////////////////////////////////////////////////////
// CAprioriView printing
BOOL CAprioriView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CAprioriView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CAprioriView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CAprioriView diagnostics
#ifdef _DEBUG
void CAprioriView::AssertValid() const
{
CRecordView::AssertValid();
}
void CAprioriView::Dump(CDumpContext& dc) const
{
CRecordView::Dump(dc);
}
CAprioriDoc* CAprioriView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CAprioriDoc)));
return (CAprioriDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CAprioriView database support
CRecordset* CAprioriView::OnGetRecordset()
{
return m_pSet;
}
/////////////////////////////////////////////////////////////////////////////
// CAprioriView message handlers
void CAprioriView::OnBnFreqItem()
{
// TODO: Add your control notification handler code here
int nFieldCount=m_pSet->GetODBCFieldCount();
int nDbCount;
CString strValue;
CString strIntToString="";
clock_t start,stop,tick;
double timeused;
int nLargeCount=0;
int nListFreqItemCount=0;
start=clock();
ClearItem();
m_List_FreqItem.InsertColumn(0,"Item",LVCFMT_LEFT,100);
m_List_FreqItem.InsertColumn(1,"Count",LVCFMT_LEFT,100);
if (nItemCount<=0)
{
MessageBox("請先進行參數設置",NULL,MB_OK);
return;
}
FindLargeItem();
for(int k=1;LargeItemCount[k-1]!=0;k++)
{
AprioriGen(k,1);
//初始化數組
for(int mm=0;mm<CandLargeItemCount[k];mm++)
{
nCountCand[mm]=0;
}
m_pSet->MoveFirst();
nDbCount=0;
while(!m_pSet->IsEOF())
{
TransGenCand(k,nDbCount);
//統計計數
for(int jj=0;jj<nTransCandCount;jj++)
for(int jj1=0;jj1<CandLargeItemCount[k];jj1++)
{
if(TransGenCandFreq[jj].Find(CandLargeItem[k][jj1])!=-1)
{
nCountCand[jj1]++;
break;
}
}
nDbCount++;
m_pSet->MoveNext();
}
ShowFreqItem(k);
}
stop=clock();
tick=stop - start;
timeused=(double)tick/CLK_TCK;
strIntToString="";
strIntToString.Format("%s%f",strIntToString,timeused);
MessageBox(strIntToString,NULL,MB_OK);
}
void CAprioriView::ClearItem()
{
//清除列表顯示的內容
m_List_FreqItem.DeleteAllItems ();
while(m_List_FreqItem.DeleteColumn (0));
UpdateWindow();
for(int kk=0;kk<nMaxSize;kk++)
LargeItemCount[kk]=0;
for(int kk1=0;kk1<nMaxSize;kk1++)
for(int kk2=0;kk2<nMaxSize;kk2++)
LargeItem[kk1][kk2]="";
}
void CAprioriView::AprioriGen(int nCandFreqItem, int nMinSupp)
{
//由L(k-1)生成C(k)
CString strTemp1,strTemp2,strRightTemp1,strRightTemp2;
CString strTemp,strLeftTemp1,strLeftTemp2;
int nstrTemp1,nstrTemp2;
int nCandFreqItemCount=0;
strTemp1="";
strTemp2="";
strRightTemp1="";
strRightTemp2="";
strTemp="";
strLeftTemp1="";
strLeftTemp2="";
nstrTemp1=0;
nstrTemp2=0;
nAllFreqItem=nAllFreqItem + LargeItemCount[nCandFreqItem-1];
for(int i1=0;i1<LargeItemCount[nCandFreqItem-1];i1++)
{
//strTemp1=strCandFreqItem[i1];
strTemp1=LargeItem[nCandFreqItem -1][i1];
nstrTemp1=strTemp1.ReverseFind(',');
strRightTemp1=strTemp1.Right(strTemp1.GetLength ()-nstrTemp1-1);
strLeftTemp1=strTemp1.Left(nstrTemp1);
for(int j1=i1+1;j1<LargeItemCount[nCandFreqItem-1];)
{
//strTemp2=strCandFreqItem[j1];
strTemp2=LargeItem[nCandFreqItem-1][j1];
nstrTemp2=strTemp2.ReverseFind (',');
strRightTemp2=strTemp2.Right(strTemp2.GetLength ()-nstrTemp2-1);
strLeftTemp2=strTemp2.Left(nstrTemp2) ;
if((strLeftTemp1==strLeftTemp2)&&(strRightTemp1<strRightTemp2))
{
strTemp=strTemp1+','+strRightTemp2;
if(Prune(nCandFreqItem,strTemp))
{ CandLargeItem[nCandFreqItem][nCandFreqItemCount++]=strTemp;
j1++;
}
else
{
j1++;
}
}
else
break;
}
}
CandLargeItemCount[nCandFreqItem]=nCandFreqItemCount;
}
void CAprioriView::SubItemGen(int strSubItemCount,CString strSubItem)
{//對每個事務分解成單個項目
CString strTemp1;
CString strTempSubItem[10];
CString strReverse;
int nSubItemCount;
int nstrRightTemp1;
int nTempCount;
strTemp1=strSubItem;
nSubItemCount=0;
while((nstrRightTemp1=strTemp1.ReverseFind(','))!=-1)
{
nTempCount=strTemp1.GetLength() - nstrRightTemp1 - 1;
strTempSubItem[nSubItemCount++]=strTemp1.Right( nTempCount);
strTemp1=strTemp1.Left(nstrRightTemp1);
}
strTempSubItem[nSubItemCount++]=strTemp1;
for(int i2=0;i2<nSubItemCount/2;i2++)
{
strReverse=strTempSubItem[nSubItemCount-i2-1];
strTempSubItem[nSubItemCount- i2-1]=strTempSubItem[i2];
strTempSubItem[i2]=strReverse;
}
for(int i1=0;i1<nSubItemCount;i1++)
{
DbItem[strSubItemCount][i1]=strTempSubItem[i1];
}
DbItemCount[strSubItemCount]=nSubItemCount;
}
void CAprioriView::FindLargeItem()
{
//顯示1-頻繁項目集
int nFieldCount=m_pSet->GetODBCFieldCount();
int nCount=0;
int nFreqItem[100];
int nDbCount=0;
CString strInit;
CString strValue;
CString strIntToString;
// 初始化候選項目集
for(int nInitCount=0;nInitCount<nItemCount;nInitCount++)
{
strInit="";
strInit.Format("%s%d",strInit,nInitCount+1);
CandLargeItem[0][nInitCount]='I'+strInit;
}
//初始化數組
for(int ii=0;ii<nItemCount;ii++)
nFreqItem[ii]=0;
m_pSet->MoveFirst ();
while(!m_pSet->IsEOF())
{
for(int j=1;j<nFieldCount;j++){
m_pSet->GetFieldValue(j,strValue);
SubItemGen(nDbCount++ ,strValue);
for(int i=0;i<nItemCount;i++)
if(strValue.Find(CandLargeItem[0][i])!=-1)
nFreqItem[i]++;
}
m_pSet->MoveNext();
}
nDbItemCount=nDbCount;
for(int i1=0;i1<nItemCount;i1++)
{ strIntToString="";
if(double(nFreqItem[i1])/double(nDbItemCount)>=dItemSupp)
{
LargeItem[0][nCount]=CandLargeItem[0][i1];
m_List_FreqItem.InsertItem(nCount,strIntToString);
m_List_FreqItem.SetItemText(nCount,0,LargeItem[0][nCount]);
strIntToString="";
strIntToString.Format("%s%d",strIntToString,nFreqItem[i1]);
m_List_FreqItem.SetItemText(nCount,1,strIntToString);
nCount++;
}
}
LargeItemCount[0]=nCount;
}
void CAprioriView::OnParameter()
{
// TODO: Add your command handler code here
CSetPara dlg;
dlg.m_ItemCount =10;
dlg.m_Item_Supp=0.2;
int ren=dlg.DoModal();
nItemCount=dlg.m_ItemCount;
dItemSupp=dlg.m_Item_Supp ;
}
BOOL CAprioriView::Prune(int nCandFreqItemCount,CString strCandFreqItem)
{
CString strTemp1;
CString strTempSubItem[nMaxSize];
CString strReverse;
CString strSubCandFreqItem[nMaxSize];//分解候選項目
CString strSubTemp="";
CString strSubTemp1;
int nSubFreqItemCount=0;//統計分解候選項目的個數
int nSubItemCount;
int nstrRightTemp1;
int nTempCount;
int nPruneCount=0;
strTemp1=strCandFreqItem;
nSubItemCount=0;
while((nstrRightTemp1=strTemp1.ReverseFind(','))!=-1)
{
nTempCount=strTemp1.GetLength() - nstrRightTemp1 - 1;
strTempSubItem[nSubItemCount++]=strTemp1.Right( nTempCount);
strTemp1=strTemp1.Left(nstrRightTemp1);
}
strTempSubItem[nSubItemCount++]=strTemp1;
for(int i2=0;i2<nSubItemCount/2;i2++)
{
strReverse=strTempSubItem[nSubItemCount-i2-1];
strTempSubItem[nSubItemCount- i2-1]=strTempSubItem[i2];
strTempSubItem[i2]=strReverse;
}
for(int i3=nSubItemCount-1;i3>=0;i3--)
{
strSubTemp1=strTempSubItem[i3];
strSubTemp.Empty();
for(int i4=0;i4<nSubItemCount;i4++)
if(strSubTemp1!=strTempSubItem[i4])
{
strSubTemp=strSubTemp+strTempSubItem[i4]+',';
}
strSubCandFreqItem[nSubFreqItemCount++] = strSubTemp.Left(strSubTemp.GetLength()-1);
}
for(int i5=0;i5<nSubFreqItemCount;i5++)
{
for(int i6=0;i6<LargeItemCount[nCandFreqItemCount-1];i6++)
if(strSubCandFreqItem[i5].Find(LargeItem[nCandFreqItemCount-1][i6])>=0)
nPruneCount++;
}
if(nPruneCount==nSubItemCount)
{
return TRUE;
}
return FALSE;
}
void CAprioriView::TransGenCand(int nCandFreqItem,int nCurrentCount )
{
CString strTransTemp;
CString strTransTemp1;
nTransCandCount=0;
int nCurrentTempCount=nCurrentCount;
int a[nMaxSize];
int nCount=0;
a[nCount]=0;
//初始化數組
for(int nTransCand=0;nTransCand<nMaxSize;nTransCand++)
{TransGenCandFreq[nTransCand]="";
}
do{
if((a[nCount]-nCount) <= (DbItemCount[nCurrentTempCount]- nCandFreqItem -1))
{
if(nCount==nCandFreqItem)
{
strTransTemp="";
for(int jj=0;jj<nCandFreqItem;jj++)
strTransTemp=strTransTemp+DbItem[nCurrentTempCount][a[jj]]+',';
strTransTemp1="";
strTransTemp1=strTransTemp+DbItem[nCurrentTempCount][a[nCandFreqItem]];
TransGenCandFreq[nTransCandCount++]=strTransTemp1;
// MessageBox(strTransTemp1);
a[nCount]++;
continue;
}
nCount++;
a[nCount]=a[nCount-1]+1;
}
else
{
if(nCount==0) return;
a[--nCount]++;
}
}while(1);
// for(int ll=0;ll<nTransCandCount;ll++)
// MessageBox(TransGenCandFreq[ll],NULL,MB_OK);
}
void CAprioriView::ShowFreqItem(int nScanCount)
{ CString strIntToString="";
CString strValue;
CString strjj3[2];
int nLargeCount=-1;
int nLargeItemCount=0;
//以下為求頻繁項目集
int k,nListFreqItemCount;
k=nScanCount;
nListFreqItemCount=LargeItemCount[k-1];
m_List_FreqItem.InsertItem(0,strValue);
m_List_FreqItem.SetItemText(0,0,"-----------");
m_List_FreqItem.SetItemText(0,1,"-----------");
for(int jj2=0;jj2<CandLargeItemCount[k];jj2++)
if(double(nCountCand[jj2])/double(nDbItemCount)>=dItemSupp)
{
LargeItem[k][nLargeItemCount++]=CandLargeItem[k][jj2];
nLargeCount++;
strjj3[1]=strIntToString;
strjj3[0]=CandLargeItem[k][jj2];
strIntToString="";
strIntToString.Format("%s%d",strIntToString,nCountCand[jj2]);
strjj3[1]=strIntToString;
m_List_FreqItem.InsertItem(nLargeCount,strValue);
m_List_FreqItem.SetItemText(nLargeCount,0,LargeItem[k][nLargeItemCount-1]);
m_List_FreqItem.SetItemText(nLargeCount,1,strIntToString);
UpdateWindow();
}
//復制頻繁項目個數
LargeItemCount[k]=nLargeItemCount;
}
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