mirror of
https://asciireactor.com/otho/cs-5821.git
synced 2024-11-22 19:25:07 +00:00
19 lines
343 B
Plaintext
19 lines
343 B
Plaintext
|
1. (a)
|
||
|
|
|
||
|
|
To test the quality of a regression fit use mean squared error.
|
||
|
|
|
||
|
|
1 ₙ
|
||
|
|
MSE = ─── ∑ (yᵢ - f̂(xᵢ))²
|
||
|
|
n ⁱ⁼¹
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
Ave(y₀ - f(x₀))²
|
||
|
|
|
||
|
|
|
||
|
|
To test the quality of a model in the classification settings, use the error rate:
|
||
|
|
|
||
|
|
1 ₙ
|
||
|
|
E = ─── ∑ I(yᵢ ≠ ŷᵢ)
|
||
|
|
n ⁱ⁼¹
|