A language model is generating text and at a certain step, it predicts the following probabilities for the next token from its vocabulary: {'the': 0.4, 'a': 0.2, 'cat': 0.15, 'dog': 0.1, 'ran': 0.08, 'sat': 0.07}. If the model is configured to use a sampling strategy where the next token is chosen from the 3 most probable candidates, which set represents the selection pool for this step?

Constructing the Top-k Selection Pool

If the parameter 'k' is set to 1, the resulting selection pool will contain only the single most probable token, making the sampling process from this pool effectively equivalent to a greedy search at that step.