ml-recall

#feature-extraction

15 questions from Clustering, Dimensionality Reduction, Transfer Learning, NLP Fundamentals

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15 questions · 15 min · score and explanations at the end

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Question 1: Short answer

easyAI-checkedClustering

K-Means can serve as a dimensionality-reduction step before a classifier. What does the last line print?

import numpy as np
from sklearn.cluster import KMeans

X = np.random.default_rng(0).random((400, 64))     # 400 images, 64 pixels each
kmeans = KMeans(n_clusters=50, n_init=1, random_state=0).fit(X)
print(kmeans.transform(X).shape)

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