FlowThrough — transformers/FlowThrough.py

Identity transformer. Passes the salted raw value through unchanged and appends the transform salt.

SLT_i = Concat(SD_i, TS_i)

Constructor

python FlowThrough(size=0, length_transform_salt=0, atol=1e-3, rtol=1e-12)

Parameter	Type	Default	Description
size	int	0	Expected output shape (set by MerkleProver).
length_transform_salt	int	0	Dimensionality of TS_i.
atol	float	1e-3	Absolute tolerance (reserved for numeric checks).
rtol	float	1e-12	Relative tolerance (reserved for numeric checks).

forward(a, salt)

Parameter	Type	Description
a	torch.Tensor	Salted raw value, shape (1, record_dim).
salt	torch.Tensor	Transform salt, shape (1, salt_dim).

Returns torch.Tensor of shape (1, record_dim + salt_dim) — Concat(a, salt).

Note

This is the default transformer used in driver.py (LTR_CHOICE=flow-through). It is also the simplest transformer to debug with because the output is the direct concatenation of the inputs.

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See index.md for the shared interface inherited by all transformers.