How can I encode impossible questions (i.e., without an answer in the context) when finetuning a QA model? I got a little confused with the code, not sure if giving start and end position as 0 (pointing to the [CLS] token) is the right approach.
How can I encode impossible questions (i.e., without an answer in the context) when finetuning a QA model? I got a little confused with the code, not sure if giving start and end position as 0 (pointing to the [CLS] token) is the right approach.