This is ML2017 Spring hw6 competition. You need to implement matrix factorization on the recommendation task.

https://inclass.kaggle.com/c/ml2017-hw6

https://github.com/bradleypallen/keras-movielens-cf

https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.apply.html
https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.to_csv.html
http:https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.html

http:https://scikit-learn.org/stable/modules/generated/sklearn.manifold.TSNE.html
https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.rand.html

https://keras.io/getting-started/functional-api-guide/

https://stackoverflow.com/questions/43196636/how-to-concatenate-two-layers-in-keras
keras-team/keras#3921

https://stackoverflow.com/questions/3394835/args-and-kwargs

https://liam0205.me/2014/09/11/matplotlib-tutorial-zh-cn/
https://indico.io/blog/visualizing-with-t-sne/
https://matplotlib.org/devdocs/api/_as_gen/matplotlib.pyplot.gca.html
http:https://www.cnblogs.com/frandy/archive/2012/09/27/python_pyplot_subplot.html
https://stackoverflow.com/questions/4700614/how-to-put-the-legend-out-of-the-plot
https://stackoverflow.com/questions/17682216/scatter-plot-and-color-mapping-in-python
https://stackoverflow.com/questions/17411940/matplotlib-scatter-plot-legend
https://matplotlib.org/api/pyplot_api.html
https://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.legend
https://stackoverflow.com/questions/14720331/how-to-generate-random-colors-in-matplotlib
https://stackoverflow.com/questions/8931268/using-colormaps-to-set-color-of-line-in-matplotlib
https://stackoverflow.com/questions/18619880/matplotlib-adjust-figure-margin