input_output_manager.hpp

来自「数据挖掘的算法」· HPP 代码 · 共 47 行

 
 #ifndef Input_Output_Manager_HPP
 #define Input_Output_Manager_HPP
 
 #include "common.hpp"  
 #include <fstream>
 #include <vector>
 #include <set>
 using namespace std;
 
 
 class Input_Output_Manager:public ofstream
 {
 public:
 
    Input_Output_Manager( ifstream& basket_file,  
                          const char* output_file_name );
    
    int read_in_a_line( set<itemtype>& basket );
 
    countertype find_frequent_items( 
       const double min_supp, vector<countertype>& support_of_items );
 
    void basket_recode( const set<itemtype>& original_basket, 
                        vector<itemtype>& new_basket );
 
    void write_out_basket( const set<itemtype>& itemset );
 
    void write_out_basket_and_counter( const set<itemtype>& itemset, 
                                       const countertype counter );
 
    void rewind(); 
 
    ~Input_Output_Manager( );
 
 private:
    ifstream& basket_file;
    
    vector<itemtype> new_code;
 
    vector<itemtype> new_code_inverse;
 };
 
 
 #endif