Tensor TownISSUE #9 of 120

classification vs regression

NeuraVSThe Overfit Ogre

Neura saysClassification predicts a discrete label; regression predicts a continuous number.

The two core supervised tasks. Classification outputs a category — spam/not, cat/dog/bird, fraud/legit. Regression outputs a quantity — price, temperature, score. The distinction drives everything downstream: which models, which loss function, which metrics (accuracy/F1 for classification; MAE/RMSE for regression). Identify which you have before anything else.

Power-ups you unlock

Classification → discrete category
Regression → continuous value
Determines model, loss, and metrics
Identify the task type first

The Overfit Ogre attacks — common mistakes

Using regression metrics on a classification task
Treating ordered categories as plain classes
Forcing a continuous target into buckets needlessly

Boss battleLabel each as classification or regression: churn, revenue, sentiment.

Example code

<!doctype html><html><head><meta charset="utf-8"></head>
<body style="background:#06040d;color:#e6e0ff;font-family:monospace;padding:20px"><pre>classification: spam? · cat/dog · fraud?
regression:     price · temperature · score</pre></body></html>

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