Does "Log loss" refer to Logarithmic loss or Logistic loss?

Question

I know I've seen it both ways, so is there a difference between the two, and which one is more commonly referred to?

Answer 1

Logarithmic loss = Logistic loss = log loss = $-y_i\log(p_i) - (1 -y_i) \log(1 -p_i)$

Sometimes people take a different logarithmic base, but it typically doesn't matter. I hear logistic loss more often.

---

FYI:

• How is logistic loss and cross-entropy related?
• Thesaurus for statistics and machine learning terms
• When is log-loss metric appropriate for evaluating performance of a classifier?
• Multi-class logarithmic loss function per class