nicolasfguillaume / recommender-systems-making-movies-recommendation Goto Github PK

Hey! Recently，I debug your program in my computer, but I have met a problem: In your program, A value named 'R' has not defined, please check out your program, thank you for your cooperation.
df = pd.DataFrame(R).replace('0', np.nan).count(axis=1) # count number of ratings per user binwidth = 10 df.hist(bins=np.arange(min(df), max(df) + binwidth, binwidth)) plt.xlabel('Number of ratings per user') plt.ylabel('Frequency') plt.title('Distribution of ratings count per user')