fix

[shenxiangzhuang]

Summary by CodeRabbit

• Bug Fixes
  • Improved accuracy in BLEU score calculation by adjusting the comparison method and enhancing test conditions.
• New Features
  • Enhanced test settings to include maximum example limits in hypothesis testing.
• Refactor
  • Updated internal logging for precision calculations in BLEU score computation.

[coderabbitai]

Walkthrough

The recent changes involve enhancing the BLEU score computation by refining the comparison metrics in the Python test and upgrading the precision handling in the Rust implementation. This includes adjustments to handle edge cases more robustly and improving the clarity of debug outputs.

Changes

File(s)	Change Summary
benchmark/test_benchmark_bleu.py	Added maximum example settings in hypothesis tests and refined assertion to use a threshold for comparing results.
src/bleu.rs	Improved precision calculation using saturating_sub, added debug outputs, updated test cases, and strengthened assertions.

Possibly related issues

• Add Tokenizer before BLEU Calculation #7: Although this issue focuses on integrating a tokenizer, the enhancements made in this PR to the BLEU calculation could complement the tokenizer integration by ensuring the precision and robustness of score computation post-tokenization.

🐇✨
A hop, a skip, a code deploy,
In Rust and Python, we find joy.
Precision tuned, assertions strong,
BLEU scores right, where none are wrong.
Cheers to code that's better, day by day! 🚀
🐇✨

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Recent Review Details

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between 215f0b1 and dc47844.

Files selected for processing (2)

• benchmark/test_benchmark_bleu.py (3 hunks)
• src/bleu.rs (3 hunks)

Files not reviewed due to errors (1)

• benchmark/test_benchmark_bleu.py (no review received)

Additional Context Used

Ruff (3)

benchmark/test_benchmark_bleu.py (3)

44-44: Local variable t0 is assigned to but never used

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50-50: Local variable t1 is assigned to but never used

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58-58: Local variable t2 is assigned to but never used

Additional comments not posted (3)

src/bleu.rs (3)

41-43: Using saturating_sub for calculating possible_matches is a robust choice to prevent underflow errors. Well done!

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43-43: Consider using a logging framework for debug statements instead of commenting them out. This allows enabling or disabling logs without changing the code.

Also applies to: 54-54

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89-117: The updated test cases with longer strings and precise assertions enhance the robustness of the BLEU score testing. Great job on improving test coverage!

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