DatasetInfo.h

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/*
 
Copyright (c) 2004, Cornell University
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       documentation and/or other materials provided with the distribution.
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       this software without specific prior written permission.
 
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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*/


/////////////////////////////////////////////////////////////////////
///
/// DatasetInfo.h
///
/////////////////////////////////////////////////////////////////////

#ifndef __DATASETINFO_H
#define __DATASETINFO_H

/////////////////////////////////////////////////////////////////////
/// @addtogroup FileInputGroup
/** @{ */

#include "SeqBitmap.h"

typedef struct
{
    int count;
    int index;
}
CountInfo;

/////////////////////////////////////////////////////////////////////
/// A class for representing the info gathered from the dataset
/////////////////////////////////////////////////////////////////////
class DatasetInfo
{
public:

    // -- constructor
    DatasetInfo()
    {
        custCount = 0;
        minSup = 0;
        f1Size = 0;
        f1BufSize = 0;
        maxCustTrans = 0;
        f1Buff = 0;
        f1NameBuff = 0;
        sListBuff = 0;
        iListBuff = 0;
        countBuff = 0;

    }

    // -- destructor
    ~DatasetInfo()
    {
        if (f1Buff != 0)
        {
            for (int i = 0; i < f1Size; i++)
                delete f1Buff[i];
            delete [] f1Buff;
        }

        if (f1NameBuff != 0)
            delete [] f1NameBuff;

        if (iListBuff != 0)
            delete [] iListBuff;

        if (sListBuff != 0)
            delete [] sListBuff;

        if (countBuff != 0)
            delete [] countBuff;

        if (bitmapSizes != 0)
            delete [] bitmapSizes;
    }


    // -- variables

    /// number of customers who have transactions in the data set
    int custCount;


    /// the minimum support (the minimum number of customers)
    int minSup;

    /// the number of frequent 1 itemsets
    int f1Size;

    /// the size of the f1Buff and f1NameBuff
    int f1BufSize;

    /// the maximum number of transactions of a customer
    int maxCustTrans;

    /// the buffer for frequent 1 itemsets (data are stored in the bitmaps)
    SeqBitmap** f1Buff;

    /// the buffer for bitmap4s
    SeqBitmap** bitmap4Buff;

    /// the buffer for the info of item names
    int* f1NameBuff;

    /// the buffer for the lists of s-steps
    int* sListBuff;

    /// the buffer for the lists of i-steps
    int* iListBuff;

    /// the buffer for the counts
    CountInfo *countBuff;

    /// size of each bitmap
    int* bitmapSizes;

};

/** @} */

#endif

---