Isotonic regression

Fits a non-decreasing function and computes R² = 1 - SSres/SStot to quantify introspective fidelity without assuming linearity

Neighborhood — ranked by edge-count

concept

Introspective fidelity
uses
Isotonic R² measuring fraction of variance in self-report explained by probe score under monotonicity assumption; the paper's primary fidelity metric

cosine ≥ 0.65 · no typed edge

Entities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.

isometryconcept0.734
A distance-preserving transformation: translation, rotation, reflection, glide-reflection
Isotropic Superposition Modelframework0.712
Prior model of superposition where features are discrete 1D objects repelling each other roughly evenly; paper argues this is incomplete
Isometry (Distance-Preserving Transformation)concept0.696
Fundamental mathematical concept; four types of isometries (translation, rotation, reflection, glide-reflection) form the basis of frieze pattern classification.
Logistic Regression Probemethod0.688
Standard linear probing technique; compared to mass-mean probing for classification accuracy and causal implication
OLS Linear Regression Fit to Alpha Trendsmethod0.687
OLS regression fitted to mu(alpha) trends to assess near-linearity of steering with alpha coefficient
Ridge Regression Probingmethod0.680
Ridge regression fit on top-256 PCs of Gemini embeddings to predict model layer-40 activations and compute residuals
Procedural Isomorphismconcept0.672
Two skills prescribing the same sequence of steps differing only in surface implementation details, enabling identical downstream performance
Bayesian inversionconcept0.667
Online inversion of nonlinear dynamic causal models using DEM.