Digital Drosophila Archive
73 lines
4.2 KiB
Markdown
73 lines
4.2 KiB
Markdown
# Phase 4AJ: a single graded-APL timing hypothesis
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Independent branch authorized by the human. All earlier models and data remain
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read-only. The learning goal remains unmet; neither an audit nor fixed-CAL PASS
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constitutes usable learning.
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## Fixed intervention
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Use the exact sealed AG author-style float64 LIF and float32 legacy graded APL.
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Compare h applied at its generating tick with the identical generated operator
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applied 18 steps later. No other change: dt=0.1 ms, anatomical delay=18 steps,
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refractory=22 steps, tau_m=20 ms, tau_syn=5 ms, W_syn=0.275 mV, original signs,
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threshold/rest/reset, all canonical IDs/edges, legacy APL tau=20 ms and gain=0.01.
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The unchanged fast-APL zero mask includes 1,212 non-KC edges not replaced by the
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graded operator. The branch does not silently fix this limitation.
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This is engineering scheduling parity, not evidence of a measured 1.8 ms graded
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APL delay. Whole h is delayed, including KC feedback; it is not a PN-only
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intervention. APL still subtracts unconditionally at end-of-step, including
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refractory KC, whereas ordinary synaptic arrivals are guarded by refractory.
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Equal arrival time is not equivalent biological action.
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## Stages and gates
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1. Exact conditional reconstruction of all 420 metadata-defined ALLN in all
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60 sealed CAL r0 records. Audit every simultaneous earliest non-design PN,
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before first KC, and duration-matched never-active PN controls. PN→ALLN→PN
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witnesses must be actual accepted timed edges; distinguish signed weights,
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reset windows and zeroed edges. No shortest paths, unique-cause or necessity
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claims. Unknown antecedents are retained and do not falsify numerical audit.
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2. Fixed stored h trace shift audit: no loss, duplication, amplitude arithmetic
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or brain simulation. Initial +0 padding and chronological unconsumed tail
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explicitly retained. No extra brain/APL tail advance or future-decay claim.
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3. Both arms: eight fixed real-edge fixtures, three fresh GPU repeats, independent
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Brian LIF/own spikes/own FIFO, legacy APL component audit. Delay0 must reproduce
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sealed AG scientific outputs bitwise.
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4. Both arms: the same two fullgraph first-seed CAL probes, independent Brian
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comparison and APL component audit. Numerical failure stops later execution.
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5. Both arms: every original six-odor × two-mode × five-seed CAL, plus first-seed
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repeat for each odor/mode. Exact source input files, not regenerated random
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inputs. All results retained. Known baseline representation failure does not
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skip treatment; no seed selection, threshold/gain search or gate relaxation.
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6. Recompute comparisons from raw evidence, old checksums and five frozen
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reference regressions. Seal truthful outcome with SHA-256 and source version.
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## Interpretation limits
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Generated h depends on changed closed-loop spikes, so branch inhibition integrals
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need not match. Fixed-trace conservation is a transport check, not proof of
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equal closed-loop dose. Accepted request counts can also change with refractory
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state, despite byte-identical requested input schedules.
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Brian state integration is independent but APL arithmetic is intentionally a
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shared frozen component. Original operator AST replay and rounding audit remain
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separate; no universal CPU/GPU equivalence is claimed from sampled fixtures.
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CAL gate retains original 3–9% mean KC fraction, all-run limits, within/between
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Jaccard and Euclidean gates, and minimum odor-pair count in both input modes.
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Passing fixed CAL is not heldout generalization or associative memory. Further
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progress requires independent seeds/novel odors, credit specificity, isolated and
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whole-brain functional readouts, then conditioning with proper controls.
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No training, eta/threshold/sign tuning, plastic mask expansion, heldout dynamic
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access, visual input, decoder, RL, game, Web or new candidate in this experiment.
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## Literature scope
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Shiu et al. 2024, DOI 10.1038/s41586-024-07763-9, supplies the spiking-LIF
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scheduling reference, not a measured MaleCNS graded-APL delay. Amin et al. 2020,
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DOI 10.7554/eLife.56954, and Prisco et al. 2021 (PMC8741211) motivate local graded
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APL/calyx interaction but do not determine this millisecond delay value. Prior
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sealed source/literature audits retain versions and provenance.
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