Alternative segmentation with NMF

In this exercise, you will analyze product purchase data and identify meaningful segments using non-negative matrix factorization algorithm (NMF). It works well with sparse customer by product matrices that are typical in the e-commerce or retail space. Finally, you will extract the components that you will then explore in the upcoming exercise.

We have loaded pandas as pd and numpy as np. Also, the raw customer by product purchase dataset has been loaded as wholesale.

Cet exercice fait partie du cours

Machine Learning for Marketing in Python

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Instructions

Import the non-negative matrix factorization function from sklearn.decomposition.
Initialize NMF instance with 4 components.
Fit the model on the wholesale sales data.
Extract and store the components as a pandas DataFrame.

Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

# Import the non-negative matrix factorization module
from sklearn.decomposition import ___

# Initialize NMF instance with 4 components
nmf = ___(4)

# Fit the model on the wholesale sales data
nmf.___(wholesale)

# Extract the components 
components = pd.DataFrame(data=nmf.___, columns=wholesale.columns)

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