Crate bleuscore

bleuscore is a BLEU score calculator written in pure rust.

Install:

The crate is called bleuscore and you can depend on it via cargo:

[dependencies]
bleuscore = "*"

Features:

• Tokenized BLEU score calculation like huggingface evaluate and sacrebleu

Basic usage:

use bleuscore::compute_score;

// get the references and prediction data:
let references: Vec<Vec<String>> = vec![vec!["Hello, World!".to_string()]];
let predictions: Vec<String> = vec!["Yellow, World!".to_string()];

// set the parameters:
let max_order: usize = 4;
let smooth: bool = true;

// calculate the BLEU score:
let res = compute_score(&references, &predictions, max_order, smooth);
println!("result: {:?}", res);
// result: BleuScore { bleu: 0.668740304976422, precisions: [0.8, 0.75, 0.6666666666666666, 0.5],
// brevity_penalty: 1.0, length_ratio: 1.0, translation_length: 4, reference_length: 4 }

!

Structs

• BleuScore
  The BLEU score data struct
• Tokenizer13a
  Same implementation with huggingface/sacrebleu
• TokenizerRegex
  Same implementation with huggingface/sacrebleu

Traits

• Tokenizer
  tokenize function is used to tokenize the strings

Functions

• compute_score
  compute the BLEU score with Tokenizer13a as default tokenizer. The implementation is based on huggingface/nmt