how to interpret PLDA model file

[Fei Tao]

Hi, I would like to read the PLDA model into python, so I use ivector-copy-plda to convert the original model to readable text.

I check it and find it has three parts. The first part is a N-d vector (mine is 200-d), second part is a NxN matrix (mine is 200-by-200), the last one is still a N-d vector. Could any one tell me how to interpret them? 

Thank you.

[David Snyder]

You can see the Write method here https://github.com/kaldi-asr/kaldi/blob/master/src/ivector/plda.cc#L26 .

Each of those objects are described here: https://github.com/kaldi-asr/kaldi/blob/master/src/ivector/plda.h#L148

If you don't know what the transform or psi is, read Probabilistic Linear Discriminant Analysis" by Sergey Ioffe.

[Fei Tao]

Thank you very much. That is very helpful information.