midSVM

What is multiclass SVM?

Updated May 17, 2026

Short answer

Multiclass SVM extends binary SVM to handle multiple classes.

Deep explanation

It uses strategies like One-vs-Rest or One-vs-One to decompose multiclass problems into multiple binary classifications.

Real-world example

Digit recognition in MNIST dataset.

Common mistakes

  • Assuming SVM natively handles multiclass without strategies.

Follow-up questions

  • What is OvR?
  • Which is better OvR or OvO?

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