k-mean for layer
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gsl_rng_env_setup(); | |
gsl_rng* rng = gsl_rng_alloc(gsl_rng_default); | |
sqlite3* db = 0; | |
int h[0x10000]; | |
int kc[0x100]; | |
float kmean[0x100]; | |
uint16_t tbl[0x10000]; | |
int i; | |
for (i = 0; i < 0x10000; i++) | |
tbl[i] = i; | |
float lut[0x10000]; | |
int a[0x10000]; | |
ccv_half_precision_to_float(tbl, lut, 0x10000); | |
if (SQLITE_OK == sqlite3_open(argv[1], &db)) | |
{ | |
sqlite3_stmt* layer_data_stmt = 0; | |
const char layer_data_qs[] = | |
"SELECT layer, weight, bias, half_precision FROM layer_data;"; | |
if (SQLITE_OK == sqlite3_prepare_v2(db, layer_data_qs, sizeof(layer_data_qs), &layer_data_stmt, 0)) | |
{ | |
while (sqlite3_step(layer_data_stmt) == SQLITE_ROW) | |
{ | |
printf("layer %d\n", sqlite3_column_int(layer_data_stmt, 0)); | |
if (sqlite3_column_int(layer_data_stmt, 0) < 10) | |
continue; | |
int half_precision = sqlite3_column_int(layer_data_stmt, 3); | |
memset(h, 0, sizeof(h)); | |
int wnum = sqlite3_column_bytes(layer_data_stmt, 1) / (half_precision ? sizeof(uint16_t) : sizeof(float)); | |
int bnum = sqlite3_column_bytes(layer_data_stmt, 2) / (half_precision ? sizeof(uint16_t) : sizeof(float)); | |
const uint16_t* w = sqlite3_column_blob(layer_data_stmt, 1); | |
const uint16_t* bias = sqlite3_column_blob(layer_data_stmt, 2); | |
int i; | |
for (i = 0; i < wnum; i++) | |
++h[w[i]]; | |
for (i = 0; i < bnum; i++) | |
++h[bias[i]]; | |
for (i = 0; i < 0x10000; i++) | |
if (h[i] > 0) | |
a[i] = gsl_rng_uniform_int(rng, 0x100); | |
else | |
a[i] = 0; | |
int t, k; | |
for (t = 0; t < 10000; t++) | |
{ | |
memset(kc, 0, sizeof(kc)); | |
memset(kmean, 0, sizeof(kmean)); | |
for (i = 0; i < 0x10000; i++) | |
if (h[i] > 0) | |
{ | |
kmean[a[i]] += lut[i] * h[i]; | |
kc[a[i]] += h[i]; | |
} | |
for (i = 0; i < 0x100; i++) | |
kmean[i] = kmean[i] / kc[i]; | |
int change = 0; | |
for (i = 0; i < 0x10000; i++) | |
if (h[i] > 0) | |
{ | |
int j = 0; | |
for (k = 1; k < 0x100; k++) | |
if (fabs(lut[i] - kmean[k]) < fabs(lut[i] - kmean[j])) | |
j = k; | |
if (a[i] != j) | |
change = 1; | |
a[i] = j; | |
} | |
if (!change) | |
break; | |
} | |
union { | |
float f; | |
int i; | |
} v; | |
for (i = 0; i < 0x100; i++) | |
{ | |
v.f = kmean[i]; | |
printf("%d %d\n", i, v.i); | |
} | |
} | |
} | |
} | |
gsl_rng_free(rng); |
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