Struct PositionalEncoding 

pub struct PositionalEncoding {
    pub max_seq_len: usize,
    pub encoding_dim: usize,
    pub encodings: AttentionMatrix,
}

Sinusoidal positional encoding table (Vaswani et al. 2017).

PE[pos][2i] = sin(pos / 10000^(2i/d)) PE[pos][2i+1] = cos(pos / 10000^(2i/d))

Fields

max_seq_len: usize

Maximum sequence length supported.

encoding_dim: usize

Dimensionality of the encoding vectors (= model_dim).

encodings: AttentionMatrix

Pre-computed encoding table — shape max_seq_len × encoding_dim.

Implementations

impl PositionalEncoding

pub fn new(max_seq_len: usize, encoding_dim: usize) -> Self

Compute the sinusoidal encoding table.

pub fn slice(&self, seq_len: usize) -> AttentionMatrix

Extract the first seq_len rows as an AttentionMatrix.

Trait Implementations

impl Clone for PositionalEncoding

fn clone(&self) -> PositionalEncoding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PositionalEncoding

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

Formats the value using the given formatter.