YOLO：如何更改暗网代码中的mAP计算频率

Question

我正在训练带有-map选项的YOLOv2以打印平均精度。我需要更改地图的计算频率。目前，每300次迭代就会计算一次，这对我来说太频繁了。我希望每进行一次计算（例如2000次迭代）。有没有办法更改交换机的密码？

我确实在detector.c文件中看到以下代码，需要更改。有输入吗？

int calc_map_for_each = 4 * train_images_num / (net.batch * net.subdivisions);  // calculate mAP for each 4 Epochs
calc_map_for_each = fmax(calc_map_for_each, 100);
int next_map_calc = iter_map + calc_map_for_each;
next_map_calc = fmax(next_map_calc, net.burn_in);
next_map_calc = fmax(next_map_calc, 1000);
if (calc_map) {
    printf("\n (next mAP calculation at %d iterations) ", next_map_calc);
    if (mean_average_precision > 0) printf("\n Last accuracy mAP@0.5 = %2.2f %% ", mean_average_precision * 100);
}

Answer 1

由于-map选项，我假设您正在使用Alexey的仓库。在detector.c（https://github.com/AlexeyAB/darknet/blob/8c970498a296ed129ffef7d872ccc25d42d1afda/src/detector.c#L223）中，您可以更改以下代码：

calc_map_for_each = fmax(calc_map_for_each, 100);

到

calc_map_for_each = fmax(calc_map_for_each, 1000);