注意力机制
http://androidkt.com/text-classification-using-attention-mechanism-in-keras/
https://blog.heuritech.com/2016/01/20/attention-mechanism/
https://www.cnblogs.com/fxjwind/p/9155789.html
https://lilianweng.github.io/lil-log/2018/06/24/attention-attention.html
https://medium.com/syncedreview/memory-attention-sequences-8522f531dd43
https://medium.com/syncedreview/memory-attention-sequences-8522f531dd43
http://www.deeplearningpatterns.com/doku.php?id=attention 不错的
https://yq.aliyun.com/articles/342508
https://blog.csdn.net/cdj0311/article/details/80433936
https://baijiahao.baidu.com/s?id=1595981655012660496&wfr=spider&for=pc
https://github.com/tsterbak/keras_attention/blob/master/models.py
https://www.depends-on-the-definition.com/attention-lstm-relation-classification/
