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To safeguard machine learning systems that operate on textual data against out-of-distribution (OOD) inputs that could cause unpredictable behaviour, we explore the use of topological features of self-attention maps from transformer-based…

计算与语言 · 计算机科学 2024-07-19 Andres Pollano , Anupam Chaudhuri , Anj Simmons

Current out-of-distribution (OOD) detection benchmarks are commonly built by defining one dataset as in-distribution (ID) and all others as OOD. However, these benchmarks unfortunately introduce some unwanted and impractical goals, e.g., to…

计算机视觉与模式识别 · 计算机科学 2021-08-27 Jingkang Yang , Haoqi Wang , Litong Feng , Xiaopeng Yan , Huabin Zheng , Wayne Zhang , Ziwei Liu

The advent of social media in recent years has fed into some highly undesirable phenomena such as proliferation of offensive language, hate speech, sexist remarks, etc. on the Internet. In light of this, there have been several efforts to…

计算与语言 · 计算机科学 2018-09-05 Pushkar Mishra , Helen Yannakoudakis , Ekaterina Shutova

Recent advancements in dense out-of-distribution (OOD) detection have primarily focused on scenarios where the training and testing datasets share a similar domain, with the assumption that no domain shift exists between them. However, in…

计算机视觉与模式识别 · 计算机科学 2023-10-31 Zhitong Gao , Shipeng Yan , Xuming He

Out-of-distribution (OOD) detection aims to identify test examples that do not belong to the training distribution and are thus unlikely to be predicted reliably. Despite a plethora of existing works, most of them focused only on the…

机器学习 · 计算机科学 2023-11-07 Reza Averly , Wei-Lun Chao

We present a new approach to evaluate computational models for the task of text understanding by the means of out-of-context error detection. Through the novel design of our automated modification process, existing large-scale data sources…

计算与语言 · 计算机科学 2018-03-28 Patrick Huber , Jan Niehues , Alex Waibel

Out-of-distribution (OOD) detection is essential for the reliability of ML models. Most existing methods for OOD detection learn a fixed decision criterion from a given in-distribution dataset and apply it universally to decide if a data…

机器学习 · 计算机科学 2023-11-29 YiFan Zhang , Xue Wang , Tian Zhou , Kun Yuan , Zhang Zhang , Liang Wang , Rong Jin , Tieniu Tan

Counterfactually-Augmented Data (CAD) has the potential to improve language models' Out-Of-Distribution (OOD) generalization capability, as CAD induces language models to exploit causal features and exclude spurious correlations. However,…

计算与语言 · 计算机科学 2023-02-21 Caoyun Fan , Wenqing Chen , Jidong Tian , Yitian Li , Hao He , Yaohui Jin

Applying machine learning to increasingly high-dimensional problems with sparse or biased training data increases the risk that a model is used on inputs outside its training domain. For such out-of-distribution (OOD) inputs, the model can…

机器学习 · 计算机科学 2025-03-10 Juniper Tyree , Andreas Rupp , Petri S. Clusius , Michael H. Boy

Outlier exposure (OE) is powerful in out-of-distribution (OOD) detection, enhancing detection capability via model fine-tuning with surrogate OOD data. However, surrogate data typically deviate from test OOD data. Thus, the performance of…

机器学习 · 计算机科学 2023-03-10 Qizhou Wang , Junjie Ye , Feng Liu , Quanyu Dai , Marcus Kalander , Tongliang Liu , Jianye Hao , Bo Han

Detecting out-of-distribution (OOD) samples plays a key role in open-world and safety-critical applications such as autonomous systems and healthcare. Recently, self-supervised representation learning techniques (via contrastive learning…

计算机视觉与模式识别 · 计算机科学 2021-10-12 Sina Mohseni , Arash Vahdat , Jay Yadawa

Open-domain multi-turn conversations mainly have three features, which are hierarchical semantic structure, redundant information, and long-term dependency. Grounded on these, selecting relevant context becomes a challenge step for…

计算与语言 · 计算机科学 2021-02-19 Lei Shen , Haolan Zhan , Xin Shen , Yang Feng

Detecting out-of-distribution (OOD) data is crucial in machine learning applications to mitigate the risk of model overconfidence, thereby enhancing the reliability and safety of deployed systems. The majority of existing OOD detection…

人工智能 · 计算机科学 2024-08-22 Christos Constantinou , Georgios Ioannides , Aman Chadha , Aaron Elkins , Edwin Simpson

Task-oriented dialogue systems have been plagued by the difficulties of obtaining large-scale and high-quality annotated conversations. Furthermore, most of the publicly available datasets only include written conversations, which are…

Out-of-distribution (OOD) detection discerns OOD data where the predictor cannot make valid predictions as in-distribution (ID) data, thereby increasing the reliability of open-world classification. However, it is typically hard to collect…

机器学习 · 计算机科学 2023-12-06 Haotian Zheng , Qizhou Wang , Zhen Fang , Xiaobo Xia , Feng Liu , Tongliang Liu , Bo Han

Deep learning models tend not to be out-of-distribution robust primarily due to their reliance on spurious features to solve the task. Counterfactual data augmentations provide a general way of (approximately) achieving representations that…

机器学习 · 计算机科学 2022-09-15 S Chandra Mouli , Yangze Zhou , Bruno Ribeiro

As end-to-end automatic speech recognition (ASR) models reach promising performance, various downstream tasks rely on good confidence estimators for these systems. Recent research has shown that model-based confidence estimators have a…

音频与语音处理 · 电气工程与系统科学 2022-03-03 Qiujia Li , Yu Zhang , David Qiu , Yanzhang He , Liangliang Cao , Philip C. Woodland

Outlier detection is a fundamental data science task with applications ranging from data cleaning to network security. Given the fundamental nature of the task, this has been the subject of much research. Recently, a new class of outlier…

数据库 · 计算机科学 2016-12-26 Jiongqian Liang , Srinivasan Parthasarathy

Out-of-distribution (OOD) detection remains challenging in text-rich networks, where textual features intertwine with topological structures. Existing methods primarily address label shifts or rudimentary domain-based splits, overlooking…

计算与语言 · 计算机科学 2025-09-03 Danny Wang , Ruihong Qiu , Guangdong Bai , Zi Huang

Out-of-distribution (OOD) detection has emerged as a popular technique to enhance the reliability of machine learning models by identifying unexpected inputs from unknown classes. Recent progress in pre-trained vision-language models (VLMs)…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Yuanwei Hu , Bo Peng , Yadan Luo , Zhen Fang , Ling Chen , Jie Lu