Matrix factorization
Matrix G
is provided here as a Pandas dataframe. View it to understand what it looks like. Look at the possible factor matrices H
, I
, and J
(also Pandas dataframes), and determine which two matrices will produce the matrix G
when multiplied together.
This exercise is part of the course
Building Recommendation Engines with PySpark
Exercise instructions
- Take a look at matrix
G
using theprint
command - Take a look at the matrices
H
,I
, andJ
and determine which pair of those matrices will produceG
when multiplied together. - Input your answer into the
np.matmul()
code provided.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Take a look at Matrix G using the following print function
print("Matrix G:")
print(____)
# Take a look at the matrices H, I, and J and determine which pair of those matrices will produce G when multiplied together.
print("Matrix H:")
print(____)
print("Matrix I:")
print(____)
print("Matrix J:")
print(____)
# Multiply the two matrices that are factors of the matrix G
prod = np.matmul(____, ____)
print(G == prod)