Question: What intrinsic evaluation metrics are used?
Answer: Class Membership Tests, Class Distinction Test, Word Equivalence Test
Alternative answer: coverage metric, being distinct (cosine INLINEFORM0 0.7 or 0.8), belonging to the same class (cosine INLINEFORM1 0.7 or 0.8), being equivalent (cosine INLINEFORM2 0.85 or 0.95)