SciPy - Clustering and Distance
Which of the following best describes the output of
scipy.spatial.distance_matrix(X, Y) when X and Y are two arrays of points?Which of the following best describes the output of scipy.spatial.distance_matrix(X, Y) when X and Y are two arrays of points?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the function
scipy.spatial.distance_matrixcomputes pairwise distances between two collections of points.Step 2: Identify the metric used
By default, it calculates the Euclidean distance between each pair of points.Final Answer:
A matrix where each element is the Euclidean distance between a point inXand a point inY-> Option AQuick Check:
Distance matrix output matches pairwise Euclidean distances [OK]
Quick Trick: Distance matrix returns pairwise Euclidean distances [OK]
Common Mistakes:
- Confusing distance matrix with dot product matrix
- Expecting indices instead of distances
- Assuming output is boolean or categorical
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