Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Let's now implement the SVD filter using the surprise package."

A block of code is set as follows:

#Import SVD
from surprise import SVD

#Define the SVD algorithm object
svd = SVD()

#Evaluate the performance in terms of RMSE
evaluate(svd, data, measures=['RMSE'])

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

 else:
        #Default to a rating of 3.0 in the absence of any information
        wmean_rating = 3.0
    return wmean_rating
score(cf_user_wmean)

OUTPUT:
1.0174483808407588

Any command-line input or output is written as follows:

sudo pip3 install scikit-surprise

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "We see that the u.user file contains demographic information about our users, such as their age, sex, occupation, and zip_code."