THEORY

CORE MACHINE LEARNING

On the Identifiability of Quantized Factors

March 28, 2024

Abstract

Disentanglement aims to recover meaningful latent ground-truth factors from the observed distribution solely, and is formalized through the theory of identifiability. The identifiability of independent latent factors has been proven to be impossible in the unsupervised i.i.d. setting under a general nonlinear map from factors to observations. In this work, however, we demonstrate that it is possible to recover quantized latent factors under a generic nonlinear diffeomorphism. We only assume that the latent factors have independent discontinuities in their density, without requiring the factors to be statistically independent. We introduce this novel form of identifiability, termed quantized factor identifiability, and provide a comprehensive proof of the recovery of the quantized factors.

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AUTHORS

Written by

Simon Lacoste-Julien

Pascal Vincent

Kartik Ahuja

Vitoria Barin Pacela

Publisher

CleaR

Research Topics

Theory

Core Machine Learning

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