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Unsupervised continual learning aims to learn new tasks incrementally without requiring human annotations. However, most existing methods, especially those targeted on image classification, only work in a simplified scenario by assuming all…

Computer Vision and Pattern Recognition · Computer Science 2022-04-13 Jiangpeng He , Fengqing Zhu

Out-of-domain (OOD) intent detection aims to examine whether the user's query falls outside the predefined domain of the system, which is crucial for the proper functioning of task-oriented dialogue (TOD) systems. Previous methods address…

Computation and Language · Computer Science 2024-03-05 Pei Wang , Keqing He , Yejie Wang , Xiaoshuai Song , Yutao Mou , Jingang Wang , Yunsen Xian , Xunliang Cai , Weiran Xu

Many neural network-based out-of-distribution (OoD) detection methods have been proposed. However, they require many training data for each target task. We propose a simple yet effective meta-learning method to detect OoD with small…

Machine Learning · Statistics 2022-06-22 Tomoharu Iwata , Atsutoshi Kumagai

Intent classification is a major task in spoken language understanding (SLU). Since most models are built with pre-collected in-domain (IND) training utterances, their ability to detect unsupported out-of-domain (OOD) utterances has a…

Computation and Language · Computer Science 2021-06-29 Yilin Shen , Yen-Chang Hsu , Avik Ray , Hongxia Jin

Out-of-distribution (OOD) detection remains challenging for deep learning models, particularly when test-time OOD samples differ significantly from training outliers. We propose OODD, a novel test-time OOD detection method that dynamically…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Yifeng Yang , Lin Zhu , Zewen Sun , Hengyu Liu , Qinying Gu , Nanyang Ye

The lack of well-calibrated confidence estimates makes neural networks inadequate in safety-critical domains such as autonomous driving or healthcare. In these settings, having the ability to abstain from making a prediction on…

Machine Learning · Computer Science 2022-07-27 Adam Dziedzic , Stephan Rabanser , Mohammad Yaghini , Armin Ale , Murat A. Erdogdu , Nicolas Papernot

Identifying intents from dialogue utterances forms an integral component of task-oriented dialogue systems. Intent-related tasks are typically formulated either as a classification task, where the utterances are classified into predefined…

Computation and Language · Computer Science 2023-10-26 Bhavuk Singhal , Ashim Gupta , Shivasankaran V P , Amrith Krishna

Out-of-distribution (OOD) detection is essential for ensuring the reliability of deep learning models operating in open-world scenarios. Current OOD detectors mainly rely on statistical models to identify unusual patterns in the latent…

Machine Learning · Computer Science 2025-06-06 Konstantin Kirchheim , Frank Ortmeier

Deep neural networks are increasingly used in a wide range of technologies and services, but remain highly susceptible to out-of-distribution (OOD) samples, that is, drawn from a different distribution than the original training set. A…

Machine Learning · Computer Science 2024-04-17 Pietro Recalcati , Fabio Garcea , Luca Piano , Fabrizio Lamberti , Lia Morra

Reliable detection of out-of-distribution (OOD) inputs is increasingly understood to be a precondition for deployment of machine learning systems. This paper proposes and investigates the use of contrastive training to boost OOD detection…

Safety-critical applications like autonomous driving use Deep Neural Networks (DNNs) for object detection and segmentation. The DNNs fail to predict when they observe an Out-of-Distribution (OOD) input leading to catastrophic consequences.…

Computer Vision and Pattern Recognition · Computer Science 2022-11-14 Lokesh Veeramacheneni , Matias Valdenegro-Toro

Out-of-distribution (OOD) detection lies at the heart of robust artificial intelligence (AI), aiming to identify samples from novel distributions beyond the training set. Recent approaches have exploited feature representations as…

Machine Learning · Computer Science 2025-08-06 Tarhib Al Azad , Faizul Rakib Sayem , Shahana Ibrahim

Out-of-distribution (OOD) detection is concerned with identifying data points that do not belong to the same distribution as the model's training data. For the safe deployment of predictive models in a real-world environment, it is critical…

Sound · Computer Science 2023-02-28 Zaharah Bukhsh , Aaqib Saeed

Out-of-Domain (OOD) intent detection is important for practical dialog systems. To alleviate the issue of lacking OOD training samples, some works propose synthesizing pseudo OOD samples and directly assigning one-hot OOD labels to these…

Computation and Language · Computer Science 2022-11-11 Hao Lang , Yinhe Zheng , Jian Sun , Fei Huang , Luo Si , Yongbin Li

Recent advances in pre-training vision-language models (VLMs), e.g., contrastive language-image pre-training (CLIP) methods, have shown great potential in learning out-of-distribution (OOD) representations. Despite showing competitive…

Computer Vision and Pattern Recognition · Computer Science 2025-09-22 Min Zhang , Bo Jiang , Jie Zhou , Yimeng Liu , Xin Lin

Detecting out-of-distribution (OOD) samples are crucial for machine learning models deployed in open-world environments. Classifier-based scores are a standard approach for OOD detection due to their fine-grained detection capability.…

Computer Vision and Pattern Recognition · Computer Science 2023-09-27 Jaewoo Park , Yoon Gyo Jung , Andrew Beng Jin Teoh

Machine learning models deployed in the wild can be challenged by out-of-distribution (OOD) data from unknown classes. Recent advances in OOD detection rely on distance measures to distinguish samples that are relatively far away from the…

Machine Learning · Computer Science 2023-12-25 Soumya Suvra Ghosal , Yiyou Sun , Yixuan Li

Unknown intent detection aims to identify the out-of-distribution (OOD) utterance whose intent has never appeared in the training set. In this paper, we propose using energy scores for this task as the energy score is theoretically aligned…

Computation and Language · Computer Science 2021-07-28 Yawen Ouyang , Jiasheng Ye , Yu Chen , Xinyu Dai , Shujian Huang , Jiajun Chen

Multimodal intent understanding is a significant research area that requires effective leveraging of multiple modalities to analyze human language. Existing methods face two main challenges in this domain. Firstly, they have limitations in…

Multimedia · Computer Science 2025-05-26 Hanlei Zhang , Qianrui Zhou , Hua Xu , Jianhua Su , Roberto Evans , Kai Gao

Detecting anomalous inputs, such as adversarial and out-of-distribution (OOD) inputs, is critical for classifiers (including deep neural networks or DNNs) deployed in real-world applications. While prior works have proposed various methods…

Machine Learning · Computer Science 2021-06-18 Jayaram Raghuram , Varun Chandrasekaran , Somesh Jha , Suman Banerjee