Why are you asking them which basic computer science graph traversal algorithms a frontier model used?
>> using human-like(?) reasoning means cutting down the search space by having some sort of insight or intuition which allows you to prune branches from the entire tree
So according to the OP there's a search of a tree and it also uses pruning btw, so I want to know what search they mean. Why are you asking?
Edit: Turns out "implicit search" is actually a thing in the literature, albeit introduced in a single paper I could find that claims Diffusion Modelling does it:
https://arxiv.org/abs/2502.19805
I don't think anyone has picked that term up. One more for the scrapheap then, oh well, next paper.
No mention of pruning though. So what did you, or the other guys mean?