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Hybrid Models with Deep and Invertible Features

2 Pith papers cite this work, alongside 34 external citations. Polarity classification is still indexing.

2 Pith papers citing it
34 external citations · Pith
abstract

We propose a neural hybrid model consisting of a linear model defined on a set of features computed by a deep, invertible transformation (i.e. a normalizing flow). An attractive property of our model is that both p(features), the density of the features, and p(targets | features), the predictive distribution, can be computed exactly in a single feed-forward pass. We show that our hybrid model, despite the invertibility constraints, achieves similar accuracy to purely predictive models. Moreover the generative component remains a good model of the input features despite the hybrid optimization objective. This offers additional capabilities such as detection of out-of-distribution inputs and enabling semi-supervised learning. The availability of the exact joint density p(targets, features) also allows us to compute many quantities readily, making our hybrid model a useful building block for downstream applications of probabilistic deep learning.

fields

cs.CL 1 cs.LG 1

years

2022 1 2019 1

verdicts

UNVERDICTED 2

representative citing papers

Language Models (Mostly) Know What They Know

cs.CL · 2022-07-11 · unverdicted · novelty 6.0

Language models show good calibration when asked to estimate the probability that their own answers are correct, with performance improving as models get larger.

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