C3_W1_KMeans_Assignmen

Course Q&A Machine Learning Specialization Unsupervised Learning, Recommenders, Reinforcement
1

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Select an initial set of centroids (3 Centroids)

initial_centroids = np.array([[3,3], [6,2], [8,5]])
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Find closest centroids using initial_centroids

idx = find_closest_centroids(X, initial_centroids)
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Print closest centroids for the first three elements

print(“First three elements in idx are:”, idx[:3])
​

UNIT TEST

from public_tests import *
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find_closest_centroids_test(find_closest_centroids)

IndexError Traceback (most recent call last)
in
6
7 # Print closest centroids for the first three elements
----> 8 print(“First three elements in idx are:”, idx[:3])
9
10 # UNIT TEST

IndexError: invalid index to scalar variable.

Could someone help me with this. After writing my code for the ‘find_closest_centroids’ function, and running the subsequent given codes, I got this error message which seems right to me because I believe there are 3 elements in the ‘initial_centroids’ variable. How do I proceed since I can’t change that part of the code? What am I missing?

2

There is an error in your find_closest_centroids() function.
It is using an index incorrectly. You can’t index a scalar.

3

Wooow…thanks a lot. Let me go back and work on that function.