Natural Attribute-based Shift Detection

• URL: http://arxiv.org/abs/2110.09276v1
• Date: Mon, 18 Oct 2021 13:15:59 GMT
• Title: Natural Attribute-based Shift Detection
• Authors: Jeonghoon Park, Jimin Hong, Radhika Dua, Daehoon Gwak, Yixuan Li, Jaegul Choo, Edward Choi
• Abstract summary: In vision, language, and healthcare, unpredictable behaviors on samples from the distribution different from the training distribution cause severe problems in deployment. For better reliability of neural-network-based classifiers, we define a new task, natural attribute-based shift (NAS) detection. Using the natural attributes present in existing datasets, we introduce benchmark datasets in vision, language, and medical for NAS detection.
• Score: 26.093019230426442
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Despite the impressive performance of deep networks in vision, language, and healthcare, unpredictable behaviors on samples from the distribution different than the training distribution cause severe problems in deployment. For better reliability of neural-network-based classifiers, we define a new task, natural attribute-based shift (NAS) detection, to detect the samples shifted from the training distribution by some natural attribute such as age of subjects or brightness of images. Using the natural attributes present in existing datasets, we introduce benchmark datasets in vision, language, and medical for NAS detection. Further, we conduct an extensive evaluation of prior representative out-of-distribution (OOD) detection methods on NAS datasets and observe an inconsistency in their performance. To understand this, we provide an analysis on the relationship between the location of NAS samples in the feature space and the performance of distance- and confidence-based OOD detection methods. Based on the analysis, we split NAS samples into three categories and further suggest a simple modification to the training objective to obtain an improved OOD detection method that is capable of detecting samples from all NAS categories.

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