dwSun commented on a change in pull request #9614: MobileNetV2 URL: https://github.com/apache/incubator-mxnet/pull/9614#discussion_r165301357
########## File path: python/mxnet/gluon/model_zoo/vision/mobilenet.py ########## @@ -147,57 +143,21 @@ def __init__(self, multiplier=1.0, classes=1000, **kwargs): with self.name_scope(): self.features = nn.HybridSequential(prefix='features_') with self.features.name_scope(): - self.features.add( - nn.Conv2D(int(32 * multiplier), 3, strides=2, padding=1, use_bias=False), - nn.BatchNorm(scale=True), - nn.Activation('relu') - ) - - c_bgn = int(32 * multiplier) - c_end = int(16 * multiplier) - self.features.add(BottleNeck(c_in=c_bgn, c_out=c_end, t=1, s=1)) - - c_bgn = int(16 * multiplier) - c_end = int(24 * multiplier) - self.features.add(BottleNeck(c_in=c_bgn, c_out=c_end, t=6, s=2)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - - c_bgn = int(24 * multiplier) - c_end = int(32 * multiplier) - self.features.add(BottleNeck(c_in=c_bgn, c_out=c_end, t=6, s=2)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - - c_bgn = int(32 * multiplier) - c_end = int(64 * multiplier) - self.features.add(BottleNeck(c_in=c_bgn, c_out=c_end, t=6, s=2)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - - c_bgn = int(64 * multiplier) - c_end = int(96 * multiplier) - self.features.add(BottleNeck(c_in=c_bgn, c_out=c_end, t=6, s=1)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - - c_bgn = int(96 * multiplier) - c_end = int(160 * multiplier) - self.features.add(BottleNeck(c_in=c_bgn, c_out=c_end, t=6, s=2)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - self.features.add(BottleNeck(c_in=c_end, c_out=c_end, t=6, s=1)) - - c_bgn = int(160 * multiplier) - c_end = int(320 * multiplier) - self.features.add(BottleNeck(c_in=c_bgn, c_out=c_end, t=6, s=1)) + _add_conv(self.features, int(32 * multiplier), kernel=3, stride=2, pad=1) + + c_bgns = [int(x * multiplier) for x in [32] + [16] + [24] * 2 + + [32] * 3 + [64] * 4 + [96] * 3 + [160] * 3] + c_ends = [int(x * multiplier) for x in [16] + [24] * 2 + [32] * 3 + + [64] * 4 + [96] * 3 + [160] * 3 + [320]] + ts = [1] + [6] * 16 + strides = [1, 2] * 2 + [1] * 2 + [2] + [1] * 3 + [1] * 3 + [2] + [1] * 3 + + for c_bgn, c_end, t, s in zip(c_bgns, c_ends, ts, strides): + self.features.add(BottleNeck(c_in=c_bgn, c_out=c_end, t=t, s=s)) Review comment: The code here looks ugly and very hard to follow the data flow. Is this kind of code really necessary? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services