{
 "figure": "Figure 1",
 "caption": "Figure 1. The concept profile of the `for` statement on the model's own neurons. All 24 x 6,144 MLP neurons of OpenCoder-1.5B are drawn in place, one row per layer, at the end of pretraining (2,034 B tokens). **Top:** the carrier set -- the 5% of neurons with the largest standardised entries -- in the colour of its entry pi(A) - pi(B), in units of the yardstick's sigma0; every other neuron is grey. Each coloured cell is its own profile entry, and the grey set is exactly the complement of the carrier set. **Bottom:** one role, two tokens. The indented `for` and the module-level `for` are two unrelated vocabulary entries carrying the same grammatical role; each neuron is coloured by which of their two carrier sets it belongs to. The sets overlap by 0.494, against their own twin ceilings of 0.837 (module) and 0.850 (indented) -- 0.59 of the ceiling, ten times the chance level of 0.050, and well short of one representation. Within a layer the neurons are ordered by degree, how many of P1's 169 carrier sets a neuron belongs to, because index order scatters a construct's carriers across the whole row; the order is fixed once and reused so later maps are comparable. Drawn on the recorded 20-cell yardstick.",
 "files": [
  "<data>/validation/paper1/FIG1_neuron_map.svg",
  "<data>/validation/paper1/FIG1_neuron_map.png"
 ],
 "reference": "pretrain_iter_0484865",
 "reference_described_as": "end of pretraining (2,034 B tokens)",
 "construct": "For",
 "twin": "twin1",
 "yardstick": "the recorded 20-cell split (paper 1's, 21 Oct)",
 "layout": "<data>/validation/paper1/LAYOUT_neurons.npz",
 "acceptance": {
  "every_coloured_cell_traces_to_a_profile_entry": true,
  "grey_set_is_exactly_the_complement_of_the_carrier_set": true,
  "raster_holds_exactly_the_carrier_set": true,
  "n_carriers": 7373,
  "scope_overlap_share_of_K": 0.49423572494235724
 },
 "degree": {
  "max": 169,
  "mean": 8.45022922092014,
  "share_zero": 0.1068996853298611
 },
 "scope_panels": [
  "module",
  "indented"
 ],
 "scope_panels_missing": {},
 "provenance": {
  "inputs": [
   "profiles/pretrain_iter_0484865/twin1/For.npz",
   "validation/carriers/pretrain_iter_0484865",
   "record/pretrain_iter_0484865/twin1__For_{A,B}_acc.npz"
  ],
  "reference": "pretrain_iter_0484865",
  "battery_prompt_hash": "570b42db13f8fe5772b8d1a9ad7d55d6fa1279dae5948ad94e8363789bcbc1ad",
  "code_commit": "3325b25",
  "design": "9-Paper-1/2610-18Oct_PAPER-1-Design.md sha256 47f6a664\u2026"
 }
}