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Bleu

Struct Bleu 

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pub struct Bleu { /* private fields */ }
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BLEU 评测器(默认 BLEU-4)。

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impl Bleu

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pub fn new() -> Self

创建默认 BLEU-4 评测器。

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pub fn with_max_n(self, n: usize) -> Self

使用 BLEU-n(默认 4)

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pub fn with_char_level(self, v: bool) -> Self

字符级分词:中文等无空格语言按字符切(否则整句成一个 token,BLEU 失效)

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pub fn with_smoothing(self, v: bool) -> Self

开启平滑:某阶 n-gram 无匹配时给小值而非整体归零,短句不被一刀切

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pub fn corpus_bleu(&self, predictions: &[&str], references: &[&str]) -> f64

corpus 级 BLEU:跨多条样例聚合 n-gram 匹配计数,再整体算几何均值 + corpus 级 brevity penalty。

P2-1:句子级 BLEU 的 brevity penalty 会把短句一刀切(如 BLEU-4 下 “the cat” 直接归零);corpus 聚合用总长度算惩罚、各阶 n-gram 计数合并, 短句的匹配仍能贡献低阶精度。开启 with_smoothing 后某阶无匹配给小值 而非整体归零。

predictionsreferences 长度必须一致(逐条对应),否则 panic。

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impl Default for Bleu

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Evaluator for Bleu

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fn eval<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, _input: &'life1 str, prediction: &'life2 str, reference: &'life3 str, ) -> Pin<Box<dyn Future<Output = Result<Score, EvalError>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

对单条预测打分
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fn name(&self) -> &str

评测器名称(用于报告汇总)

Auto Trait Implementations§

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impl Freeze for Bleu

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impl RefUnwindSafe for Bleu

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impl Send for Bleu

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impl Sync for Bleu

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impl Unpin for Bleu

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impl UnsafeUnpin for Bleu

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impl UnwindSafe for Bleu

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more