Frank wolfe
求解交通流量分配模型的有效方法
#include "stdafx.h"
#include
#include
#include "os.h"
#include "my_types.h"
#include "md_alloc.h"
#include "my_util.h"
#include "message.h"
#include "tui.h"
#include "meta.h"
#include "link_functions.h"
#include "od_table.h"
#include "od_flow.h"
#include "mincostroutes.h"
#include "ls_bisect.h"
#include "fw_status.h"
extern int no_zones, no_nodes, no_links;
/* Gloabal variables */
my_float **ODflow, TotalODflow;
/* Local Declarations */
/* void FW(void); Should there be a function for fw, or should it be included in main? */
static void Init(char *tuiFileName);
static void Close(char *tuiFileName);
static void InitODflow(void);
static void CloseODflow(void);
/* End of local declarations. */
void main(int argc, char **argv ) {
my_float *MainVolume, *SubVolume, *SDVolume, Lambda;
int **MinPathPredLink;
struct fw_status_struct fw_status;
char *tuiFileName;
StatusMessage("General", "Ready, set, go...");
switch(argc){
case 2: tuiFileName=argv[1];
break;
case 1: tuiFileName="control.tui";
break;
default: ExitMessage("Wrong number of command line arguments (%d). \n"
"Syntax: fw .", argc-1);
}
Init(tuiFileName);
MainVolume = (my_float*)Alloc_1D(no_links, sizeof(my_float) );
SDVolume = SubVolume = (my_float*)Alloc_1D(no_links, sizeof(my_float) ); /* Compute search direction and sub-volume in the same place. */
MinPathPredLink = (int**)Alloc_2D(no_zones,no_nodes, sizeof(int));
InitFWstatus(&fw_status);
FindMinCostRoutes (MinPathPredLink, NULL);
Assign (ODflow,MinPathPredLink,MainVolume);
FirstFWstatus(MainVolume, &fw_status);
UpdateLinkCost(MainVolume);
for ( fw_status.Iteration = 1; ContinueFW(fw_status); fw_status.Iteration++) {
FindMinCostRoutes (MinPathPredLink, NULL);
Assign (ODflow,MinPathPredLink,SubVolume);
VolumeDifference( SubVolume, MainVolume, SDVolume); /* Which yields the search direction. */
Lambda = LinksSDLineSearch ( MainVolume, SDVolume );
UpdateFWstatus(MainVolume, SDVolume, &fw_status);
UpdateVolume ( MainVolume, SDVolume, Lambda );
UpdateLinkCost (MainVolume);
}
CloseFWstatus(MainVolume);
free(MainVolume);
free(SubVolume);
Free_2D((void**)MinPathPredLink,no_zones,no_nodes);
Close(tuiFileName);
StatusMessage("General","The end");
}
static void Init(char *tuiFileName){
tuiInit(tuiFileName);
InitLinks();
InitODflow();
InitLineSearch();
}
static void Close(char *tuiFileName){
StatusMessage("General", "Closing all modules");
tuiClose(tuiFileName);
CloseLinks();
CloseODflow();
CloseLineSearch();
}
static void InitODflow(void){
char *ODflowFileName;
int input_no_zones;
double Factor=1.0;
struct meta_struct meta_data;
tuiGetInputFileName( "OD flow file name", TRUE, &ODflowFileName);
StatusMessage("General", "Reading OD flow file '%s'", ODflowFileName);
ODflow = Read_ODflow (ODflowFileName, &TotalODflow, &input_no_zones, &meta_data);
if(input_no_zones != no_zones)
ExitMessage("OD flow file '%s' is for %d zones, and not for %d zones.", ODflowFileName , input_no_zones, no_zones);
tuiGetDouble( "OD flow factor", FALSE, &Factor);
if(Factor <= 0.0)
ExitMessage( "OD flow factor %lf is invalid, if must be positive.", Factor);
if(Factor != 1.0)
Factor_ODtable (ODflow, (my_float) Factor, no_zones) ;
}
static void CloseODflow(void){
Free_2D((void **)ODflow, no_zones, no_zones);
}
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资源详情
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本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二条之规定，若资源存在侵权或相关问题请联系本站客服人员，zhiweidada#qq.com，请把#换成@，本站将给予最大的支持与配合，做到及时反馈和处理。关于更多版权及免责申明参见 版权及免责申明