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Diverse beam search (CPU) #55

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@joecummings joecummings commented Mar 3, 2023

Summary

Adds diverse beam search from this paper.

Helpful Diagrams

Figure 1: Example of how diversity factor (Hamming) is applied at timestep t
Screenshot 2023-03-03 at 1 52 04 PM

Figure 2: General algo
Screenshot 2023-03-03 at 1 51 58 PM

Test Plan (required)

Will add new tests.

Checklist

  • Test coverage
  • Tests pass
  • Code formatted
  • Rebased on latest matter
  • Code documented

Closes #54

@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Mar 3, 2023
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Diverse beam search
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