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Paperium

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CodeBLEU: a Method for Automatic Evaluation of Code Synthesis

CodeBLEU: a better way to score computer code

People want a simple number to tell good programs from bad ones, but old scores miss things.
Some only count matching words, others want a perfect copy and that is too strict, so many correct solutions get ignored.
We made CodeBLEU to change that, it looks at plain word matches and also checks the syntax or structure of the code and how data moves, the semantics.
That means it can spot when two answers do the same job even if they look different.
We ran tests on three common tasks and compared the score to what programmers said, and CodeBLEU had a better match with people than older metrics.
This makes it easier to trust automatic scoring when teaching, building tools, or measuring progress.
The idea is simple: score should reflect what the code actually do, not just how it reads.
Try thinking of it as a kinder, smarter checker for code that sees both form and meaning, so useful results wont be thrown away by a strict exact match.

Read article comprehensive review in Paperium.net:
CodeBLEU: a Method for Automatic Evaluation of Code Synthesis

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