from final block. Valid values are between 0 and 6, with 6 meaning all backbone layers are trainable. If ``None`` is passed (the default) this value is set to 3. **kwargs: parameters passed to the ``torchvision.models.detection.faster_rcnn.FasterRCNN`` base class. Please refer to the `source code `_ for more details about this class. .. autoclass:: torchvision.models.detection.FasterRCNN_MobileNet_V3_Large_FPN_Weights :members: r`