New translations svm-toy.cpp (Chinese Simplified)

lang/zh/gklearn/gedlib/lib/libsvm.3.22/svm-toy/windows/svm-toy.cpp

@@ -0,0 +1,482 @@
+#include <windows.h>
+#include <windowsx.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <list>
+#include "../../svm.h"
+using namespace std;
+
+#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]='\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 = 100;
+	param.C = 1;
+	param.eps = 1e-3;
+	param.p = 0.1;
+	param.shrinking = 1;
+	param.probability = 0;
+	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 == '\0')
+			break;
+
+		p++;
+		switch (*p++) {
+			case 's':
+				param.svm_type = atoi(p);
+				break;
+			case 't':
+				param.kernel_type = atoi(p);
+				break;
+			case 'd':
+				param.degree = atoi(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 'b':
+				param.probability = 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.kernel_type == PRECOMPUTED)
+	{
+	}
+	else 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, &param);
+		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_free_and_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, &param);
+		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);
+				if (param.svm_type == ONE_CLASS && d<0) d=2;
+				SetPixel(window_dc, i, j, colors[(int)d]);
+				SetPixel(buffer_dc, i, j, colors[(int)d]);
+			}
+
+		svm_free_and_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");
+
+						char str[1024];
+						Edit_GetLine(edit, 0, str, sizeof(str));
+						const char *p = str;
+						const char* svm_type_str = strstr(p, "-s ");
+						int svm_type = C_SVC;
+						if(svm_type_str != NULL)
+							sscanf(svm_type_str, "-s %d", &svm_type);
+
+						if(fp)
+						{
+							if(svm_type == EPSILON_SVR || svm_type == NU_SVR)
+							{
+								for(list<point>::iterator p = point_list.begin(); p != point_list.end();p++)
+									fprintf(fp,"%f 1:%f\n", p->y, p->x);
+							}
+							else
+							{
+								for(list<point>::iterator p = point_list.begin(); p != point_list.end();p++)
+									fprintf(fp,"%d 1:%f 2:%f\n", 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)
+								{
+									point p = {x,y,v};
+									point_list.push_back(p);
+								}
+								else if(sscanf(buf,"%lf%*d:%lf",&y,&x)==2)
+								{
+									point p = {x,y,current_value};
+									point_list.push_back(p);
+								}
+								else
+									break;
+							}
+							fclose(fp);
+							draw_all_points();
+						}
+					}
+				}
+				break;
+			}
+		}
+		return 0;
+	case WM_DESTROY:
+		PostQuitMessage(0);
+		return 0;
+	}
+
+	return DefWindowProc(hwnd, iMsg, wParam, lParam);
+}