aprioriview.h

本代码实现了数据挖掘中的一个经典算法Aprioris 。在此算法中

// AprioriView.h : interface of the CAprioriView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_APRIORIVIEW_H__CE066CDF_BA3A_4947_A6CC_A1347E7DBC63__INCLUDED_)
#define AFX_APRIORIVIEW_H__CE066CDF_BA3A_4947_A6CC_A1347E7DBC63__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#define nMaxSize  1000
class CAprioriSet;


class CAprioriView : public CRecordView
{
protected: // create from serialization only
	CAprioriView();
	DECLARE_DYNCREATE(CAprioriView)

public:
	//{{AFX_DATA(CAprioriView)
	enum { IDD = IDD_APRIORI_FORM };

	CListCtrl	m_List_FreqItem;
	CAprioriSet* m_pSet;

	//}}AFX_DATA

// Attributes
public:
	CAprioriDoc* GetDocument();

// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAprioriView)
	public:
	virtual CRecordset* OnGetRecordset();
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	virtual void OnInitialUpdate(); // called first time after construct
	virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);
	virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);
	virtual void OnEndPrinting(CDC* pDC, CPrintInfo* pInfo);
	//}}AFX_VIRTUAL

// Implementation
public:
	double dItemSupp;
	void GenFreqItems();
	void ShowFreqItem(int nScanCount);
	void TransGenCand(int nCandFreqItem,int nCurrentCount);
	int nCountCand[nMaxSize];
	CString TransGenCandFreq[nMaxSize];
    int nTransCandCount;
	BOOL Prune(int nCandFreqItemCount,CString strCandFreqItem);
	CString DbItem[nMaxSize][nMaxSize];//存放每个事务的各个单项目
	int DbItemCount[nMaxSize];//每个事务的单项目个数
	int nDbItemCount;//统计数据库中事务个数
	int nItemCount;//设置数据库中总共有的各种不同项目个数
	int nAllFreqItem;//前K-1所有频繁项目个数
	int LargeItemCount[nMaxSize];//存放各级频繁项目个数
	CString LargeItem[nMaxSize][nMaxSize];//存放各级频繁项目
	CString CandLargeItem[nMaxSize][nMaxSize];//存放各级候选项目
    int CandLargeItemCount[nMaxSize];//存放各级候选项目个数

	void FindLargeItem();

	void SubItemGen(int strSubItemCount,CString strSubItem);
	void AprioriGen(int nCandFreqItem,int nMinSupp);
	void ClearItem();
	void ShowDbInfo();
	virtual ~CAprioriView();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
	//{{AFX_MSG(CAprioriView)
	afx_msg void OnBnFreqItem();
	afx_msg void OnParameter();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()

	
};

#ifndef _DEBUG  // debug version in AprioriView.cpp
inline CAprioriDoc* CAprioriView::GetDocument()
   { return (CAprioriDoc*)m_pDocument; }
#endif

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_APRIORIVIEW_H__CE066CDF_BA3A_4947_A6CC_A1347E7DBC63__INCLUDED_)