Wide & Deep model tutorial

Google's official case models:

https://github.com/tensorflow/models/tree/master/official/r1/wide_deep
requirement: https://github.com/tensorflow/models/tree/master/official

feature columns Details:

https://tensorflow.google.cn/tutorials/structured_data/feature_columns?hl=zh-cn
the Feature case illustrates the Columns:
http://xudongyang.coding.me/tensorflow-feature-columns/

Dataset Details:

https://tensorflow.google.cn/versions/r1.14/api_docs/python/tf/data/Dataset