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//
// FixedSizeArrayStack.h
// graphcluster
//
// Created by Martin Steinegger on 21.05.13.
// Copyright (c) 2013 Martin Steinegger. All rights reserved.
//
#include <iostream>
#include "LinearMultiArray.h"
#include "SetCover.h"
#include <list>
#include <map>
#include <sstream>
#include <string>
#include <fstream>
#include <vector>
#include <istream>
#include <cstring>
#include <stdlib.h>
// 10 5
// 5 7 8 9 10
// 5 7
// 1 3 6 10
// 4 6 7 9 10
// 1 2 8 10
struct set_data {
unsigned int ** sets;
unsigned short ** weights;
unsigned int * set_sizes;
unsigned int * element_size_lookup;
unsigned int set_count;
unsigned int uniqu_element_count;
unsigned int all_element_count;
unsigned int max_weight;
};
set_data create_random_set_data(int set_size, int elment_count ){
int n,m;
m=set_size;
n=elment_count;
set_data ret_struct;
ret_struct.set_count = m;
ret_struct.uniqu_element_count = n;
unsigned int * element_buffer=(unsigned int *)malloc(n * sizeof(unsigned int));
ret_struct.element_size_lookup = (unsigned int *)malloc((n+2) * sizeof(unsigned int));
unsigned int * element_size=ret_struct.element_size_lookup;
memset(&element_size[0], 0, sizeof(unsigned int)*n+2);
ret_struct.set_sizes = (unsigned int *)malloc((m+1) * sizeof(unsigned int));
ret_struct.set_sizes[m]=0;
unsigned int * set_sizes=ret_struct.set_sizes;
ret_struct.sets = (unsigned int **)malloc(m * sizeof(unsigned int*));
unsigned int ** sets = ret_struct.sets;
ret_struct.weights = (unsigned short **)malloc(m * sizeof(unsigned short*));
unsigned short ** weights = ret_struct.weights;
ret_struct.max_weight = 0;
ret_struct.all_element_count=0;
for(int i = 0; i<m; i++){
int element_counter=0;
for(int j = 0; j < 10; j++) {
int curr_element=rand()%(elment_count-2 + 1) + 1;
if(curr_element == 0)
continue;
element_buffer[element_counter++]=curr_element;
element_size[curr_element]++;
ret_struct.all_element_count++;
}
if(ret_struct.max_weight < element_counter){
ret_struct.max_weight = element_counter;
}
unsigned int * elements = new unsigned int[element_counter];
memcpy(elements,element_buffer,sizeof(int)*element_counter);
unsigned short * weight = new unsigned short[element_counter];
std::fill_n(weight, element_counter, 1);
weights[i] = weight;
sets[i] = elements;
set_sizes[i]=element_counter;
}
free(element_buffer);
return ret_struct;
}
bool validate_result(std::list<set *> * ret,unsigned int uniqu_element_count){
std::list<set *>::const_iterator iterator;
unsigned int result_element_count=0;
for (iterator = ret->begin(); iterator != ret->end(); ++iterator) {
set::element * element =(*iterator)->elements;
do{
result_element_count++;
}while((element=element->next)!=NULL);
}
return (uniqu_element_count==result_element_count)? true : false;
}
set_data read_in_set_data(char * dbname){
// Open the stream
std::ifstream file(dbname);
if ( !file )
{
std::cout << "File dosen't exist" << std::endl;
}
std::stringstream buffer;
buffer << file.rdbuf();
file.close();
set_data ret_struct;
std::string line;
std::getline(buffer, line);
std::istringstream line_stream(line);
int n,m;
line_stream >> n >> m;
ret_struct.set_count = m;
ret_struct.uniqu_element_count = n;
unsigned int * element_buffer=(unsigned int *)malloc(n * sizeof(unsigned int));
unsigned int * element_size=new unsigned int[n+2];
memset(&element_size[0], 0, sizeof(unsigned int)*(n+2));
ret_struct.element_size_lookup = element_size;
unsigned int * set_size=new unsigned int[m];
ret_struct.set_sizes = set_size;
unsigned int ** sets = new unsigned int*[m];
ret_struct.sets = sets;
unsigned short ** weights = new unsigned short*[m];
ret_struct.weights = weights;
ret_struct.max_weight = 0;
ret_struct.all_element_count=0;
for(int i = 0; i<m; i++){
std::getline(buffer, line);
std::string token;
int element_counter=0;
line_stream.clear();
line_stream.str(line);
while (std::getline(line_stream, token, ' '))
{
int curr_element=atoi(token.c_str());
if(curr_element == 0)
continue;
element_buffer[element_counter++]=curr_element;
element_size[curr_element]++;
ret_struct.all_element_count++;
}
if(ret_struct.max_weight < element_counter){
ret_struct.max_weight = element_counter;
}
unsigned int * elements = new unsigned int[element_counter];
memcpy(elements,element_buffer,sizeof(int)*element_counter);
unsigned short * weight = new unsigned short[element_counter];
std::fill_n(weight, element_counter, 1);
weights[i] = weight;
sets[i] = elements;
set_size[i]=element_counter;
}
return ret_struct;
}
int main()
{
std::cout << "start readin";
std::cout.flush();
set_data set_data = read_in_set_data("testdatafile");
// set_data set_data = create_random_set_data(29000000,29000000);
std::cout << " --- Done" << std::endl;
std::cout << "init setcover";
std::cout.flush();
set_cover setcover(set_data.set_count,
set_data.uniqu_element_count,
set_data.max_weight,
set_data.all_element_count,
set_data.element_size_lookup
);
for(int i = 0; i < set_data.set_count; i++){
setcover.add_set(i+1, set_data.set_sizes[i]
,(const unsigned int*)set_data.sets[i],
(const unsigned short*)set_data.weights[i],
set_data.set_sizes[i]);
free(set_data.sets[i]);
free(set_data.weights[i]);
}
std::cout << " --- Done" << std::endl;
// readInData("/Users/aluucard/Documents/workspace/graphcluster/graphcluster/test_data/graphdb_final",
// "/Users/aluucard/Documents/workspace/graphcluster/graphcluster/test_data/graphdb_final.index");
std::cout << "execute setcover" ;
std::cout.flush();
std::list<set *> ret= setcover.execute_set_cover();
std::cout << " --- Done" << std::endl;
std::cout << "validate result ";
if(validate_result(&ret,set_data.uniqu_element_count))
std::cout << " VALID ";
else
std::cout << " NOT VALID ";
std::cout << " --- Done" << std::endl;
std::cout << "write result setcover" << std::endl;
std::cout.flush();
std::list<set *>::const_iterator iterator;
for (iterator = ret.begin(); iterator != ret.end(); ++iterator) {
std::cout << "set id " << (*iterator)->set_id << " Element: ";
set::element * element =(*iterator)->elements;
do{
std::cout << element->element_id << ", ";
}while((element=element->next)!=NULL);
std::cout << std::endl;
}
}
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