35. systems/tween

Part: V · Systems
Package: github.com/openfluke/welvet/systems/tween
Status: ok — ✅

When

Adaptation, measurement, or evolution (systems/tween).

Where

import "github.com/openfluke/welvet/systems/tween"

cd 35-tween && source ../env.sh && go run .

Why

Target propagation (chain-rule or Hebbian layerwise gaps) is an alternative credit-assignment path. Not the same package as TrainMode Tween / TweenChain on a Sandwich (those are layers/parallel — §67).

What

NewState, Forward, BackwardChainRule / BackwardLayerwise, ApplyGaps; SIMD DotTile/Saxpy budgets.

Sample output (captured)

forward: no op at {0 0 0 0} (type Dense)

Live capture from go run ./cmd/runall on local ../../welvet (exit 0).

Source

Copied from the Welvet feature book examples (openfluke.github.io/welvet/examples/35-tween).

package main

import (
	"fmt"

	"github.com/openfluke/welvet/architecture"
	"github.com/openfluke/welvet/core"
	"github.com/openfluke/welvet/systems/tween"
)

func main() {
	g := architecture.NewGrid(1, 1, 1, 1)
	st := tween.NewState[float32](g, tween.DefaultConfig())
	_, err := tween.Forward(g, st, core.NewTensor[float32](1, 4))
	fmt.Println(err)
}