the negative one
DynaShift was forced off for H3 in the 2026-09-03 disable pass on
theoretical grounds (LTXAV-calibrated, never actually tested on H3) --
re-enabled here to find out. Also gives it a second bank: negative_memory
now stores liked generations the same way it already stores disliked
ones (is_positive_profile, same sign-only convention h3_repr_steering
uses), and _build_dynashift_wrapper computes mean(liked) - mean(disliked)
over each bank's matching-resolution frames as a pull direction --
deliberately NOT nearest-neighbor matching toward one liked example,
which would risk reproducing that specific past generation. Needs
MIN_BANK_FOR_PULL (2) entries in each bank at the run's own latent
resolution before it contributes anything.
Reuses the existing dynashift/dynashift_strength/dynashift_threshold
controls for both directions -- no new Editor UI needed.
'Awful' / 'Wrong appearance' banked on intrusion semantics; now any rating
whose profile reward marks the run a bad OUTCOME (<= -0.25: Missing
quality, Missing details+quality, Missing action+quality, Missing
details+action+quality) also feeds the negative bank - degradation is
visible in the latent, so steering off that attractor is meaningful.
Near-miss ratings with positive reward (Missing details +0.35, Missing
action +0.05) stay excluded: those latents are mostly-wanted content and
banking them would repel future runs from material the user asked for.
Decision moves into negative_memory.is_negative_profile (intrusion keys OR
reward threshold, robust to future profiles); promoted entries now carry
the rating key as provenance for severity-weighted steering later.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Store what went WRONG, not just what was asked for. Ratings 'Awful' and
'Wrong appearance' promote that run's final video latent (fp16, batch
squeezed) + mean-pooled conditioning into a per-key negative bank
(<key>.negative_latents.pt, ring buffer of 8). The Chain Sampler writes a
pending candidate at the end of every keyed run; the rating that scores
that run promotes or discards it - same pairing as the x0 snapshot, and
the stem glob in delete_refinement_key covers both new sidecars.
Sampling (dynashift toggle + strength/threshold, off by default):
per late step each current video frame is pooled and compared against
every banked negative frame (alignment-free in time, so chain position /
guide tails don't matter; other resolutions are skipped). Frames matching
above threshold get the matched negative frame's aligned component
subtracted (projection removal, coef clamped >= 0), scaled by
above-threshold margin - steering self-releases once the unwanted feature
is gone. Negatives are weighted by prompt similarity so bad gens from
unrelated prompts steer less. No uncond pass, no extra model forward;
audio byte-identical (video span slice + cat). Wrapper rides the tagged
per-scene lifecycle (leak-strip covered) and threads through batch
training.
Editor: DynaShift knobs land in Engine Settings > Guidance same-change
(sampler_inputs pass-through, no backend change), verified rendering live.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
digital-garbage