Example of Token Masking in a BERT Input Sequence

Example of an Unchanged Token in a BERT Input Sequence

Example of Random Token Replacement in a BERT Input Sequence

A language model is designed to process pairs of sentences by concatenating them into a single sequence. This model requires a special token at the beginning of the entire sequence to be used for classification tasks, and another special token to mark the boundary between the two sentences and to signify the end of the sequence. Given the two sentences 'The sky is blue.' and 'The grass is green.', which of the following options correctly formats them as a single input sequence for this model?

Debugging Model Input Formatting

Analyzing Input Sequence Structure