https://www.bloomberg.co.jp/news/articles/2019-07-31/PVHQVD6TTDS001
https://www.itmedia.co.jp/news/spv/1907/30/news120.html
https://www.gizmodo.jp/amp/2019/07/thousands-of-reasons-that-we-shouldnt-trust-a-neural-ne-1836669838.html
https://blog.zerotoone.jp/entry/2017/06/04/070331