Using distance-weighted KNN with K=3, a test point has three neighbours: A (class Red, distance 1), B (class Blue, distance 2), C (class Blue, distance 4). Using weights = 1/distance, what is the predicted class?

Question

Answer

Red — because its total weight (1.0) exceeds Blue's total weight (0.75)

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Blue — because it has 2 votes out of 3 neighbours

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Blue — because the average distance to Blue points is shorter

Answer

It's a tie and cannot be resolved

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Using distance-weighted KNN with K=3, a test point has three neighbours: A (clas...

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