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CTCLoss

entrenar::aprender_compat::loss

Struct CTCLoss 

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pub struct CTCLoss { /* private fields */ }
Expand description

Connectionist Temporal Classification (CTC) Loss.

Used for sequence-to-sequence tasks where alignment is unknown. Common in speech recognition and OCR.

Reference: Graves et al., “Connectionist Temporal Classification” (2006)

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impl CTCLoss

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pub fn new(blank_idx: usize) -> CTCLoss

Create CTC loss with specified blank token index.

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pub fn blank_idx(&self) -> usize

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pub fn forward( &self, log_probs: &[Vec<f32>], targets: &[usize], input_length: usize, target_length: usize, ) -> f32

Compute CTC loss using forward-backward algorithm.

§Arguments
  • log_probs - Log probabilities [T, C] (time x classes)
  • targets - Target sequence (class indices, no blanks)
  • input_length - Length of input sequence
  • target_length - Length of target sequence

Trait Implementations§

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impl Clone for CTCLoss

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fn clone(&self) -> CTCLoss

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for CTCLoss

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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