svm-toy.cpp
资源名称:svm.rar [点击查看]
上传用户:xgw_05
上传日期:2014-12-08
资源大小:2726k
文件大小:11k
源码类别:
.net编程
开发平台:
Java
- #include <windows.h>
- #include <windowsx.h>
- #include <stdio.h>
- #include <ctype.h>
- #include <list>
- #include "../../svm.h"
- #define DEFAULT_PARAM "-t 2 -c 100"
- #define XLEN 500
- #define YLEN 500
- #define DrawLine(dc,x1,y1,x2,y2,c)
- do {
- HPEN hpen = CreatePen(PS_SOLID,0,c);
- HPEN horig = SelectPen(dc,hpen);
- MoveToEx(dc,x1,y1,NULL);
- LineTo(dc,x2,y2);
- SelectPen(dc,horig);
- DeletePen(hpen);
- } while(0)
- using namespace std;
- COLORREF colors[] =
- {
- RGB(0,0,0),
- RGB(0,120,120),
- RGB(120,120,0),
- RGB(120,0,120),
- RGB(0,200,200),
- RGB(200,200,0),
- RGB(200,0,200)
- };
- HWND main_window;
- HBITMAP buffer;
- HDC window_dc;
- HDC buffer_dc;
- HBRUSH brush1, brush2, brush3;
- HWND edit;
- enum {
- ID_BUTTON_CHANGE, ID_BUTTON_RUN, ID_BUTTON_CLEAR,
- ID_BUTTON_LOAD, ID_BUTTON_SAVE, ID_EDIT
- };
- struct point {
- double x, y;
- signed char value;
- };
- list<point> point_list;
- int current_value = 1;
- LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
- int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
- PSTR szCmdLine, int iCmdShow)
- {
- static char szAppName[] = "SvmToy";
- MSG msg;
- WNDCLASSEX wndclass;
- wndclass.cbSize = sizeof(wndclass);
- wndclass.style = CS_HREDRAW | CS_VREDRAW;
- wndclass.lpfnWndProc = WndProc;
- wndclass.cbClsExtra = 0;
- wndclass.cbWndExtra = 0;
- wndclass.hInstance = hInstance;
- wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
- wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
- wndclass.hbrBackground = (HBRUSH) GetStockObject(BLACK_BRUSH);
- wndclass.lpszMenuName = NULL;
- wndclass.lpszClassName = szAppName;
- wndclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
- RegisterClassEx(&wndclass);
- main_window = CreateWindow(szAppName, // window class name
- "SVM Toy", // window caption
- WS_OVERLAPPEDWINDOW,// window style
- CW_USEDEFAULT, // initial x position
- CW_USEDEFAULT, // initial y position
- XLEN, // initial x size
- YLEN+52, // initial y size
- NULL, // parent window handle
- NULL, // window menu handle
- hInstance, // program instance handle
- NULL); // creation parameters
- ShowWindow(main_window, iCmdShow);
- UpdateWindow(main_window);
- CreateWindow("button", "Change", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
- 0, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_CHANGE, hInstance, NULL);
- CreateWindow("button", "Run", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
- 50, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_RUN, hInstance, NULL);
- CreateWindow("button", "Clear", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
- 100, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_CLEAR, hInstance, NULL);
- CreateWindow("button", "Save", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
- 150, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_SAVE, hInstance, NULL);
- CreateWindow("button", "Load", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
- 200, YLEN, 50, 25, main_window, (HMENU) ID_BUTTON_LOAD, hInstance, NULL);
- edit = CreateWindow("edit", NULL, WS_CHILD | WS_VISIBLE,
- 250, YLEN, 250, 25, main_window, (HMENU) ID_EDIT, hInstance, NULL);
- Edit_SetText(edit,DEFAULT_PARAM);
- brush1 = CreateSolidBrush(colors[4]);
- brush2 = CreateSolidBrush(colors[5]);
- brush3 = CreateSolidBrush(colors[6]);
- window_dc = GetDC(main_window);
- buffer = CreateCompatibleBitmap(window_dc, XLEN, YLEN);
- buffer_dc = CreateCompatibleDC(window_dc);
- SelectObject(buffer_dc, buffer);
- PatBlt(buffer_dc, 0, 0, XLEN, YLEN, BLACKNESS);
- while (GetMessage(&msg, NULL, 0, 0)) {
- TranslateMessage(&msg);
- DispatchMessage(&msg);
- }
- return msg.wParam;
- }
- int getfilename( HWND hWnd , char *filename, int len, int save)
- {
- OPENFILENAME OpenFileName;
- memset(&OpenFileName,0,sizeof(OpenFileName));
- filename[0]=' ';
- OpenFileName.lStructSize = sizeof(OPENFILENAME);
- OpenFileName.hwndOwner = hWnd;
- OpenFileName.lpstrFile = filename;
- OpenFileName.nMaxFile = len;
- OpenFileName.Flags = 0;
- return save?GetSaveFileName(&OpenFileName):GetOpenFileName(&OpenFileName);
- }
- void clear_all()
- {
- point_list.clear();
- PatBlt(buffer_dc, 0, 0, XLEN, YLEN, BLACKNESS);
- InvalidateRect(main_window, 0, 0);
- }
- HBRUSH choose_brush(int v)
- {
- if(v==1) return brush1;
- else if(v==2) return brush2;
- else return brush3;
- }
- void draw_point(const point & p)
- {
- RECT rect;
- rect.left = int(p.x*XLEN);
- rect.top = int(p.y*YLEN);
- rect.right = int(p.x*XLEN) + 3;
- rect.bottom = int(p.y*YLEN) + 3;
- FillRect(window_dc, &rect, choose_brush(p.value));
- FillRect(buffer_dc, &rect, choose_brush(p.value));
- }
- void draw_all_points()
- {
- for(list<point>::iterator p = point_list.begin(); p != point_list.end(); p++)
- draw_point(*p);
- }
- void button_run_clicked()
- {
- // guard
- if(point_list.empty()) return;
- svm_parameter param;
- int i,j;
- // default values
- param.svm_type = C_SVC;
- param.kernel_type = RBF;
- param.degree = 3;
- param.gamma = 0;
- param.coef0 = 0;
- param.nu = 0.5;
- param.cache_size = 40;
- param.C = 1;
- param.eps = 1e-3;
- param.p = 0.1;
- param.shrinking = 1;
- param.nr_weight = 0;
- param.weight_label = NULL;
- param.weight = NULL;
- // parse options
- char str[1024];
- Edit_GetLine(edit, 0, str, sizeof(str));
- const char *p = str;
- while (1) {
- while (*p && *p != '-')
- p++;
- if (*p == ' ')
- break;
- p++;
- switch (*p++) {
- case 's':
- param.svm_type = atoi(p);
- break;
- case 't':
- param.kernel_type = atoi(p);
- break;
- case 'd':
- param.degree = atof(p);
- break;
- case 'g':
- param.gamma = atof(p);
- break;
- case 'r':
- param.coef0 = atof(p);
- break;
- case 'n':
- param.nu = atof(p);
- break;
- case 'm':
- param.cache_size = atof(p);
- break;
- case 'c':
- param.C = atof(p);
- break;
- case 'e':
- param.eps = atof(p);
- break;
- case 'p':
- param.p = atof(p);
- break;
- case 'h':
- param.shrinking = atoi(p);
- break;
- case 'w':
- ++param.nr_weight;
- param.weight_label = (int *)realloc(param.weight_label,sizeof(int)*param.nr_weight);
- param.weight = (double *)realloc(param.weight,sizeof(double)*param.nr_weight);
- param.weight_label[param.nr_weight-1] = atoi(p);
- while(*p && !isspace(*p)) ++p;
- param.weight[param.nr_weight-1] = atof(p);
- break;
- }
- }
- // build problem
- svm_problem prob;
- prob.l = point_list.size();
- prob.y = new double[prob.l];
- if(param.svm_type == EPSILON_SVR ||
- param.svm_type == NU_SVR)
- {
- if(param.gamma == 0) param.gamma = 1;
- svm_node *x_space = new svm_node[2 * prob.l];
- prob.x = new svm_node *[prob.l];
- i = 0;
- for (list<point>::iterator q = point_list.begin(); q != point_list.end(); q++, i++)
- {
- x_space[2 * i].index = 1;
- x_space[2 * i].value = q->x;
- x_space[2 * i + 1].index = -1;
- prob.x[i] = &x_space[2 * i];
- prob.y[i] = q->y;
- }
- // build model & classify
- svm_model *model = svm_train(&prob, ¶m);
- svm_node x[2];
- x[0].index = 1;
- x[1].index = -1;
- int *j = new int[XLEN];
- for (i = 0; i < XLEN; i++)
- {
- x[0].value = (double) i / XLEN;
- j[i] = (int)(YLEN*svm_predict(model, x));
- }
- DrawLine(buffer_dc,0,0,0,YLEN,colors[0]);
- DrawLine(window_dc,0,0,0,YLEN,colors[0]);
- int p = (int)(param.p * YLEN);
- for(int i=1; i < XLEN; i++)
- {
- DrawLine(buffer_dc,i,0,i,YLEN,colors[0]);
- DrawLine(window_dc,i,0,i,YLEN,colors[0]);
- DrawLine(buffer_dc,i-1,j[i-1],i,j[i],colors[5]);
- DrawLine(window_dc,i-1,j[i-1],i,j[i],colors[5]);
- if(param.svm_type == EPSILON_SVR)
- {
- DrawLine(buffer_dc,i-1,j[i-1]+p,i,j[i]+p,colors[2]);
- DrawLine(window_dc,i-1,j[i-1]+p,i,j[i]+p,colors[2]);
- DrawLine(buffer_dc,i-1,j[i-1]-p,i,j[i]-p,colors[2]);
- DrawLine(window_dc,i-1,j[i-1]-p,i,j[i]-p,colors[2]);
- }
- }
- svm_destroy_model(model);
- delete[] j;
- delete[] x_space;
- delete[] prob.x;
- delete[] prob.y;
- }
- else
- {
- if(param.gamma == 0) param.gamma = 0.5;
- svm_node *x_space = new svm_node[3 * prob.l];
- prob.x = new svm_node *[prob.l];
- i = 0;
- for (list<point>::iterator q = point_list.begin(); q != point_list.end(); q++, i++)
- {
- x_space[3 * i].index = 1;
- x_space[3 * i].value = q->x;
- x_space[3 * i + 1].index = 2;
- x_space[3 * i + 1].value = q->y;
- x_space[3 * i + 2].index = -1;
- prob.x[i] = &x_space[3 * i];
- prob.y[i] = q->value;
- }
- // build model & classify
- svm_model *model = svm_train(&prob, ¶m);
- svm_node x[3];
- x[0].index = 1;
- x[1].index = 2;
- x[2].index = -1;
- for (i = 0; i < XLEN; i++)
- for (j = 0; j < YLEN; j++) {
- x[0].value = (double) i / XLEN;
- x[1].value = (double) j / YLEN;
- double d = svm_predict(model, x);
- SetPixel(window_dc, i, j, colors[(int)d]);
- SetPixel(buffer_dc, i, j, colors[(int)d]);
- }
- svm_destroy_model(model);
- delete[] x_space;
- delete[] prob.x;
- delete[] prob.y;
- }
- free(param.weight_label);
- free(param.weight);
- draw_all_points();
- }
- LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
- {
- HDC hdc;
- PAINTSTRUCT ps;
- switch (iMsg) {
- case WM_LBUTTONDOWN:
- {
- int x = LOWORD(lParam);
- int y = HIWORD(lParam);
- point p = {(double)x/XLEN, (double)y/YLEN, current_value};
- point_list.push_back(p);
- draw_point(p);
- }
- return 0;
- case WM_PAINT:
- {
- hdc = BeginPaint(hwnd, &ps);
- BitBlt(hdc, 0, 0, XLEN, YLEN, buffer_dc, 0, 0, SRCCOPY);
- EndPaint(hwnd, &ps);
- }
- return 0;
- case WM_COMMAND:
- {
- int id = LOWORD(wParam);
- switch (id) {
- case ID_BUTTON_CHANGE:
- ++current_value;
- if(current_value > 3) current_value = 1;
- break;
- case ID_BUTTON_RUN:
- button_run_clicked();
- break;
- case ID_BUTTON_CLEAR:
- clear_all();
- break;
- case ID_BUTTON_SAVE:
- {
- char filename[1024];
- if(getfilename(hwnd,filename,1024,1))
- {
- FILE *fp = fopen(filename,"w");
- if(fp)
- {
- for (list<point>::iterator p = point_list.begin(); p != point_list.end(); p++)
- fprintf(fp,"%d 1:%f 2:%fn",p->value,p->x,p->y);
- fclose(fp);
- }
- }
- }
- break;
- case ID_BUTTON_LOAD:
- {
- char filename[1024];
- if(getfilename(hwnd,filename,1024,0))
- {
- FILE *fp = fopen(filename,"r");
- if(fp)
- {
- clear_all();
- char buf[4096];
- while(fgets(buf,sizeof(buf),fp))
- {
- int v;
- double x,y;
- if(sscanf(buf,"%d%*d:%lf%*d:%lf",&v,&x,&y)!=3)
- break;
- point p = {x,y,v};
- point_list.push_back(p);
- }
- fclose(fp);
- draw_all_points();
- }
- }
- }
- break;
- }
- }
- return 0;
- case WM_DESTROY:
- PostQuitMessage(0);
- return 0;
- }
- return DefWindowProc(hwnd, iMsg, wParam, lParam);
- }