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19 lines
343 B
Plaintext
19 lines
343 B
Plaintext
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1. (a)
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To test the quality of a regression fit use mean squared error.
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1 ₙ
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MSE = ─── ∑ (yᵢ - f̂(xᵢ))²
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n ⁱ⁼¹
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Ave(y₀ - f(x₀))²
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To test the quality of a model in the classification settings, use the error rate:
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1 ₙ
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E = ─── ∑ I(yᵢ ≠ ŷᵢ)
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n ⁱ⁼¹
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