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Beam search: end marker is expanded as an ordinary live token · case 05
end marker is expanded as an ordinary live token.
Case contract
Children are [parent,token,score]; tokens equal eos complete a path. Return (live,finished) lists preserving child rows.
Why this case matters
Beam decoders rely on consistent hypothesis state while expanding and ranking candidates.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| live and done | [[[0, "x", 5], [0, "END", 6], [1, "y", 4]], []] | [[[0, "x", 5], [1, "y", 4]], [[0, "END", 6]]] | Failed |
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