support decoder only ia3 for ranked classification #70
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Adds support for inference with IA3 adaptors loaded from a file on decoder only ranked classification models.
reproduction
Successfully reproduces benchmark metric from @cherry979988's research code. Evaluating on the
non_class_to_class
setting of MetaICL using a rawgpt2-large
with specific IA3 weights tuned for each of 20 tasks and 5 seeds on each task: