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Netflix needed a formal measure for their contest, so RMSE is a useful one while "making people happy" is not. A business that relies on recommendation can plug
by ntoshev 18y ago
Netflix needed a formal measure for their contest, so RMSE is a useful one while "making people happy" is not. A business that relies on recommendation can plug a new algorithm with better RMSE and get improved results immediately, it is an important part of the puzzle.
- sah 18y ago"Making people happy" is hard to define, but you can pick better concrete metrics than RMSE, and this article offers suggestions on how. An important part of solving any problem is defining success correctly.