Transfer learning on custom dataset (Asian faces)?

This is a follow up to this thread

I'm not talking about custom classifier from @davidsandberg (i.e. training classifier on known classes).. this problem im referring to is mainly calculating L2 distance on Asian faces. I tried all models from past (20170131-005910, 20170131-234652, 20180408-102900, and 20180402-114759)... and the L2 distances for same face seem to be too high and vice versa (different faces have l2 distances too low)

https://s7.postimg.cc/yi28ve5rv/image.png

1. Are there notes / repos / tutorials specifically on transfer learning for custom dataset (particularly Asian faces).

2. Anyone working on this? Looking for collaborators. Would gladly open source this work w/some guidance & help. (Ideally Keras based, but i guess TF would work too)

3. What is the dataset supposed to look like? (i.e. specific angles, labels, etc.) Would appreciate if someone point me to a sample dataset