issue batch_size

[AliceNing]

in class VectorNet in vector_net.py
why batch_size is equal to item_num.shape[0]？
How do i understand it?/
Thanks

[DQSSSSS]

Generally, the input of the neural network is formed with batch, which means the network accepts several sets of data (maybe larger than 1) as the input, so the input data has the batch_size dimension.