My Near-Perfect R2 Was Fake: Debugging a Speed and Distance Model
The result looked great: R2 of 0.9993 and a correlation of 0.9994 between speed and distance. The problem was that the data had no real relationship in it. What the script does Generates 1,000 random speed values (10 to 1,000) and 1,000 random distance values (100 to 10,000) independently with rand…
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- 2026-10-10 04:00 · DEV Community — Machine Learning
My Near-Perfect R2 Was Fake: Debugging a Speed and Distance Model