组合神经优化涉及的一些知识

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1/ 注意力机制（attention mechanism）

https://lilianweng.github.io/lil-log/2018/06/24/attention-attention.html

2/Pointer network

https://www.translatoruser-int.com/translate?&to=en&csId=fa917e53-e092-4c2a-88c3-450a2fe4bf4e&usId=b194361b-a786-4ca1-8312-8f822f2a00ec&ref=SERP&refd=www.translatetheweb.com&dl=en&ac=true&dt=2019%2F4%2F5%207%3A34&h=tp_EBh-JusBVJ3VQQXUfwlwgBWO7LSlR&a=https%3A%2F%2Fmedium.com%2F%40devnag%2Fpointer-networks-in-tensorflow-with-sample-code-14645063f264

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