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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <assert.h>
#include <unistd.h>
// #define DEBUG
#define CHECK_SEED 69
#define BIAS 20
#define PASSES 99999
#define MIN(x, y) (((x) < (y)) ? (x) : (y))
#define WIDTH 60
#define HEIGHT 60
float input[HEIGHT][WIDTH];
float weights[HEIGHT][WIDTH];
int rand_range(int low, int high)
{
assert(low < high);
return rand() % (high - low) + low;
}
void print_weight();
void fill_rect(int x0, int y0, int x1, int x2, float val);
void fill_circle(int cx, int cy, int r, float val);
void gen_rect();
void gen_circle();
void gen_shape(int opt)
{
if(opt == 0) gen_rect();
else if(opt == 1) gen_circle();
else assert(0);
}
void sub_weights();
void add_weights();
void manip_weights(int opt)
{
if(opt == 0) sub_weights();
else if(opt == 1) add_weights();
else assert(0);
}
float get_out()
{
float out_node = 0.0f;
for(int i = 0; i < HEIGHT; i++)
for(int j = 0; j < WIDTH; j++)
{
out_node += (weights[i][j] * input[i][j]);
}
return out_node;
}
void train()
{
memset(input, 0, HEIGHT*WIDTH*4);
int opt = rand_range(0, 2);
gen_shape(opt);
float out = get_out();
if((out > BIAS) != opt)
manip_weights(opt);
#ifdef DEBUG
printf("OUT %f", out);
print_all();
#endif
}
int check()
{
memset(input, 0, HEIGHT*WIDTH*4);
int opt = rand_range(0, 2);
gen_shape(opt);
float out = get_out();
if((out > BIAS) != opt)
return 0;
return 1;
}
int main()
{
memset(input, 0, HEIGHT*WIDTH*4);
memset(weights, 0, HEIGHT*WIDTH*4);
// ----- Train -----//
time_t cur_time = time(0);
puts("[INFO] Training model");
srand(time(0));
for(size_t i = 0; i < PASSES; i++) {
train();
#ifdef DEBUG
sleep(5);
#endif
}
for(size_t i = 0; i < PASSES; i++) {
train();
#ifdef DEBUG
sleep(5);
#endif
}
puts("[INFO] Training completed");
printf("[INFO] Operation took %ld seconds\n", time(0) - cur_time);
// ----- Check ----- //
cur_time = time(0);
puts("[INFO] Checking model success rate");
srand(CHECK_SEED);
int correct = 0;
for(size_t i = 0; i < PASSES; i++) {
correct += check();
}
printf("[INFO] Model success rate is %f%%\n", ((float)correct/PASSES)*100);
printf("[INFO] Operation took %ld seconds\n", time(0) - cur_time);
#ifdef DEBUG
print_weight();
#endif
return 0;
}
void print_weight()
{
puts("------------------------------------------------------------");
for(int i = 0; i < HEIGHT; i++)
{
for(int j = 0; j < WIDTH; j++)
{
if(weights[i][j] == 0.0f)
printf(".");
else if(weights[i][j] < 0.0f)
printf("@");
else
printf("#");
}
puts("");
}
puts("------------------------------------------------------------");
}
void fill_rect(int x0, int y0, int x1, int y1, float val)
{
assert(x0 >= 0); assert(x1 >= 0);
assert(x0 < WIDTH); assert(x1 < WIDTH);
assert(y0 >= 0); assert(y1 >= 0);
assert(y0 < HEIGHT); assert(y1 < HEIGHT);
assert(x0 <= x1); assert(y0 <= y1);
for(int y = y0; y <= y1; y++)
{
for(int x = x0; x <= x1; x++)
{
input[y][x] = val;
}
}
}
void fill_circle(int cx, int cy, int r, float val)
{
assert(r > 0);
int x0 = cx - r; assert(x0 >= 0); assert(x0 < WIDTH);
int y0 = cy - r; assert(y0 >= 0); assert(y0 < HEIGHT);
int x1 = cx + r; assert(x1 >= 0); assert(x1 < WIDTH);
int y1 = cy + r; assert(y1 >= 0); assert(y1 < HEIGHT);
for (int y = y0; y <= y1; ++y)
for (int x = x0; x <= x1; ++x)
{
int dx = x - cx;
int dy = y - cy;
if (dx*dx + dy*dy <= r*r)
input[y][x] = val;
}
}
void gen_rect()
{
int x0 = rand_range(0, WIDTH);
int y0 = rand_range(0, HEIGHT);
int x1 = rand_range(x0, WIDTH);
int y1 = rand_range(y0, HEIGHT);
fill_rect(x0, y0, x1, y1, 1.0f);
}
void gen_circle()
{
int cx = rand_range(2, WIDTH-2);
int cy = rand_range(2, HEIGHT-2);
int r = MIN(
MIN(cx, WIDTH - cx),
MIN(cy, HEIGHT - cy));
r = rand_range(1, r);
fill_circle(cx, cy, r, 1.0f);
}
void sub_weights()
{
for(int i = 0; i < HEIGHT; i++)
for(int j = 0; j < WIDTH; j++)
{
weights[i][j] -= input[i][j];
}
}
void add_weights()
{
for(int i = 0; i < HEIGHT; i++)
for(int j = 0; j < WIDTH; j++)
{
weights[i][j] += input[i][j];
}
}
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