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Lambda

The two Lagrange multipliers in Mucho+MOTA's MaxEnt tournament simulator that internally control the cash-frequency and heads-up sufficient statistics. Lambda is the dual representation of the (CF, HU) archetype parameters.

Lambda (λ₁, λ₂) are the two Lagrange multipliers in SALSA’s maximum-entropy construction. They are the dual representation of the two structural sufficient statistics — cash frequency (CF) and heads-up edge (HU) — that define a player’s archetype on the 2D skill plane.

Mathematically, the MaxEnt finish distribution p(i) over positions i in a field of N satisfies:

p(i) ∝ exp(λ₁ · φ_CF(i) + λ₂ · φ_HU(i))

where φ_CF and φ_HU are the indicator/score functions for the cash-position and heads-up-position constraints. Solving the constrained optimization finds the (λ₁, λ₂) pair such that the expected CF and HU under p match the input archetype values. This is the standard exponential-family / Gibbs-distribution form that drops out of Jaynes’ MaxEnt program.

In practice, lambda values are an internal representation — users see archetypes (e.g., “ROI 25% / variance 2.5σ”) rather than raw lambdas. But lambdas are what get cached, transferred between buy-in buckets, and updated by Bayesian inference as new tournament results arrive. The shrinkage rule operates on lambdas, not on the surface ROI numbers.

This is a paid-tier internal — the free version of Mucho+MOTA exposes neither lambdas, the SALSA solver, nor the per-bucket transfer functions.

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