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PairInit

ferritin_plms::esmfold2::layers::pair_init

Struct PairInit 

Source 
pub struct PairInit { /* private fields */ }
Expand description

Learnable pair-representation initializer.

Combines relative-position + chain features and an outer-product term to produce the initial [B, N, N, d_pair] tensor fed into the Pairformer.

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impl PairInit

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pub fn load( vb: VarBuilder<'_>, d_single: usize, d_pair: usize, n_relpos_bins: usize, d_outer: usize, ) -> Result<Self>

Load from a VarBuilder rooted at pair_init.*.

§Arguments
  • d_single — single-repr dim (384)
  • d_pair — output pair dim (256)
  • n_relpos_bins — half-window for relpos (32 → 65 bins)
  • d_outer — inner dim for outer-product projection (32)
Source

pub fn forward( &self, single: &Tensor, residue_indices: &Tensor, chain_ids: &Tensor, ) -> Result<Tensor>

Build the initial pair representation.

§Arguments
  • single — [B, N, d_single]
  • residue_indices — [B, N] integer residue positions
  • chain_ids — [B, N] integer chain identifiers
§Returns

[B, N, N, d_pair]

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