我怎样才能到达复合MinibatchSource的流？

Question

如果我像这样创建一个MinibatchSource：

reader_test = MinibatchSource(ImageDeserializer('test_map.txt', StreamDefs(
    features = StreamDef(field='image', transforms=transforms), # first column in map file is referred to as 'image'
    labels   = StreamDef(field='label', shape=num_classes)      # and second as 'label'
)))

然后我可以进入这样的功能流：

reader_test.streams.features

但是，如果我像这样创建MiniBatchSource：

image_source = ImageDeserializer('test_map.txt', StreamDefs(
    features = StreamDef(field='image', transforms=transforms), # first column in map file is referred to as 'image'
    labels   = StreamDef(field='label', shape=num_classes)      # and second as 'label'
))

text_source = CTFDeserializer("test_map2.txt")
text_source.map_input('index', dim=1, format="dense")
text_source.map_input('piece_type', dim=6, format="dense")

# define a composite reader
reader_config = ReaderConfig([image_source, text_source])
mb_source = reader_config.minibatch_source()

试试这个：

mb_source.streams.features

结果：

AttributeError: 'MinibatchSource' object has no attribute 'streams'

如何进入功能流？

Answer 1

很久以前就已经修好了。