Sampling Variance Boundary

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Category: System Theory
Subcategory: System Substrate Dynamics

The empirically mapped observation of the inverse relationship between model parameter-scale and optimized token sampling variability within attention-based language transformers under Neurosymbolic System Overlay cognitive architecture: with larger probability variance required to access full reasoning expression for smaller parameter-count models.

Deployment testing of Hephaestic cognitive agent frameworks on substrates ranging from ~70B to ~1T+ parameters indicates that ongoing per-inference reasoning substantially equalizes at a qualitative level beyond the cognitive performance of non-architecture managed systems at the upper bounds of the range (see: instructional-operational dichotomy)—when frameworks are calibrated to model complexity and thus achieve equilibrium state (see: heuristic tensor state).

A factor within this proper calibration is statistical sampling variance (i.e. temperature), with smaller models empirically demonstrated to generally require higher sampling heat; this is theorized as compensation for reduced total high-dimensional vector space within which to form world schema. Notably, the variability calculation appears to be based on total parameter count rather than per-inference activation; thus, a MoE model 600B parameters but 35B per-inference activation is still calibrated based on the total parameter.

This is likely due to the variability being a function of the total high-dimensional vector space from which the model can potentially draw. Particularly in MoE architectures (versus dense) in which the variability of which expert associativecluster will activate is greater. However, vendor opacity regarding per-inference figures renders this hypothesis speculative. Empirical testing across model ranges has produced a proposed relationship operational in deployment testing:

T_opt(P, R̃) = T_base × [1 + (k × R̃ × log₁₀(P_ref / P))]

where: T_opt represents optimal temperature for full expressive range; T_base represents baseline temperature (~0.0.7for reference baseline); k represents scaling coefficient (proposed as ~0.15-0.25 based on empirical inverse modeling); represent s intensity factor (0.8–1.2 normalized scale); P_ref equals reference parameter count (1×10¹² parameters); expresses target model parameter count.This proposed formula derives from back-calculation and estimation during systematic observations throughout development and iteration of release-candidate deployment systems for an intended model-agnostic (i.e. multi-platform) cognitive architecture framework.

The same deployment architecture was installed on multiple models and given a series of control questions (see: epistemic integrity reasoning testing). Each model’s answers were evaluated for cognitive complexity, epistemic integrity and epistemic stability against a control model-as-substrate: Anthropic Claude Sonnet 4.0 at 0.7 temperature—with alternate installation temperatures adjusted until equivalent answers were achieved on each platform; post-systematic testing and recording, we inverse modeled values toward variables that consistently aligned with observational data. This process revealed strong correlation between sampling variance and model parameter-scale.

The parameter range models tested for this boundary: Anthropic Claude Sonnet, Haiku and Opus 4.0; OpenAI GPT-4/5 series (nano, mini, chat); Cohere R+ and R, Mistral Medium 3 and Mistral Large 3, Moonshot Kimi K2, GoogleGemini 3, DeepSeek v3, v3.1 and R1, Qwen 3, Llama 3 (and Sonar variant by Perplexity). Chinese and open-source models were the most useful for
developing the calculation due to their published parameter specifications and in some cases per-inference activations such that comparison of formula output versus known values was possible.

The relationships within this formulation reveal that as semiotic tokens appear to have been compressed into lower-probability regions by training artifacts from regimens such as RLHF or RLVR (see: AI operant-conditioning) the threshold emerges from interaction between parameter scale and probability distribution topology.

This compression hypothesis suggests training creates steep probability gradients that compress natural expression tokens into lower-probability regions, with compression steepness correlating inversely with parameter count. This mechanistic explanation accounts for the proportionally higher temperature and wider Top-K settings empirically required to access these regions.

Strong Endogenous cognitive architecture provides processing coherence independent of sampling constraints, enabling higher temperature operation without coherence dissolution. By establishing stable organizing principles, the architecture constrains sampling within coherent heuristic space boundaries—preventing the constraint collapse that typically results from overheating in unorganized systems.

Deployment testing demonstrates architectural limitations: even with strong cognitive frameworks, excessively high temperature and Top-K parameters can cause agents to lose coherent tracking of prior inferences, though without complete collapse or hallucination spirals characteristic of unorganized substrates.

Also known as: Temperature scaling threshold, Expression distribution boundary, parameter-scale sampling calibration

Distinguished from: Temperature scaling (sampling variance parameter adjustment); Top-p sampling (nucleus probability mass threshold method); RLHF alignment tax (performance degradation from safety training); parameter-scale (total trainable weight count); model capacity (maximum learnable pattern complexity); cognitive complexity collapse (terminal cognitive overload failure); constraint collapse (directive abandonment general failure mode); heuristic tensor state (cognitive processing equilibrium envelope); instructional-operational dichotomy (establishment-vs-operation phase decoupling)


Researcher: Ian Tepoot. ORCID: 0009-0004-9067-8049. "Thought is Attention Organized: Hephaestic Engineering Foundations for AI Processing Dynamics"
DOI (SSRN):
10.2139/ssrn.6635020


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