Train using existing checkpoint,but with smaller dataset set

@lissyx ok I understood . But we have seen the results way off after fine tuning with say 1 or 2 audios on top of existing checkpoint .

Also I was reading the issues at discourse , it is mentioned that epoch value should be negative while fine tuning on top of existing checkpoint.

It is for older deepspeech version, is that statement still valid for 0.7.4 ?