AI RESEARCH
Iterative Identification Closure: Amplifying Causal Identifiability in Linear SEMs
arXiv CS.LG
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ArXi:2604.09309v1 Announce Type: cross The Half-Trek Criterion (HTC) is the primary graphical tool for determining generic identifiability of causal effect coefficients in linear structural equation models (SEMs) with latent confounders. However, HTC is inherently node-wise: it simultaneously resolves all incoming edges of a node, leaving a gap of "inconclusive" causal effects (15-23% in moderate graphs). We