Was it last week or whenever ? Um , so what I was started playing with was the  th again , this is the HTK back - end. And , um , I was curious because the way that they train up the models ,  they go through about four sort of rounds of  of training. And in the first round they do  uh , I think it 's three iterations , and for the last three rounds e e they do seven iterations of re - estimation in each of those three. And so , you know , that 's part of what takes so long to train the  the  the back - end for this.
I 'm sorry , I didn't quite get that. There 's  there 's four and there 's seven and  I  I 'm sorry.
Yeah. Uh , maybe I should write it on the board. So ,  there 's four rounds of training. Um , I g I g I guess you could say iterations. The first one is three , then seven , seven , and seven. And what these numbers refer to is the number of times that the , uh , HMM re - estimation is run. It 's this program called H E
But in HTK , what 's the difference between , uh , a  an inner loop and an outer loop in these iterations ?