i dont understand

home/acer/PycharmProjects/AA_GITHUB/chatbot-master/rnn.py:66: UserWarning: nn.init.xavier_uniform is now deprecated in favor of nn.init.xavier_uniform_.
nn.init.xavier_uniform(t)
/home/acer/PycharmProjects/AA_GITHUB/chatbot-master/rnn.py:68: UserWarning: nn.init.orthogonal is now deprecated in favor of nn.init.orthogonal_.
nn.init.orthogonal(t)
/home/acer/PycharmProjects/AA_GITHUB/chatbot-master/rnn.py:70: UserWarning: nn.init.constant is now deprecated in favor of nn.init.constant_.
nn.init.constant(t, 0)
/usr/local/lib/python3.6/dist-packages/torch/nn/functional.py:52: UserWarning: size_average and reduce args will be deprecated, please use reduction='sum' instead.
warnings.warn(warning.format(ret))