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Contrastive pretraining is well-known to improve downstream task performance and model generalisation, especially in limited label settings. However, it is sensitive to the choice of augmentation pipeline. Positive pairs should preserve…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Melanie Roschewitz , Fabio De Sousa Ribeiro , Tian Xia , Galvin Khara , Ben Glocker

The reliance of text classifiers on spurious correlations can lead to poor generalization at deployment, raising concerns about their use in safety-critical domains such as healthcare. In this work, we propose to use counterfactual data…

机器学习 · 计算机科学 2024-01-10 Amir Feder , Yoav Wald , Claudia Shi , Suchi Saria , David Blei

Convolutional neural networks (CNNs) learn to extract representations of complex features, such as object shapes and textures to solve image recognition tasks. Recent work indicates that CNNs trained on ImageNet are biased towards features…

计算机视觉与模式识别 · 计算机科学 2021-04-21 Chaithanya Kumar Mummadi , Ranjitha Subramaniam , Robin Hutmacher , Julien Vitay , Volker Fischer , Jan Hendrik Metzen

Contrastive learning (CL) brought significant progress to various NLP tasks. Despite this progress, CL has not been applied to Arabic NLP to date. Nor is it clear how much benefits it could bring to particular classes of tasks such as those…

Hate speech is one of the main threats posed by the widespread use of social networks, despite efforts to limit it. Although attention has been devoted to this issue, the lack of datasets and case studies centered around scarcely…

计算与语言 · 计算机科学 2024-10-11 Camilla Casula , Sara Tonelli

As NLP models become more complex, understanding their decisions becomes more crucial. Counterfactuals (CFs), where minimal changes to inputs flip a model's prediction, offer a way to explain these models. While Large Language Models (LLMs)…

计算与语言 · 计算机科学 2024-11-13 Van Bach Nguyen , Paul Youssef , Christin Seifert , Jörg Schlötterer

Unsupervised learning has recently made exceptional progress because of the development of more effective contrastive learning methods. However, CNNs are prone to depend on low-level features that humans deem non-semantic. This dependency…

计算机视觉与模式识别 · 计算机科学 2022-01-04 Songwei Ge , Shlok Mishra , Haohan Wang , Chun-Liang Li , David Jacobs

In current visual model training, models often rely on only limited sufficient causes for their predictions, which makes them sensitive to distribution shifts or the absence of key features. Attribution methods can accurately identify a…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Yannan Chen , Ruoyu Chen , Bin Zeng , Wei Wang , Shiming Liu , Qunli Zhang , Zheng Hu , Laiyuan Wang , Yaowei Wang , Xiaochun Cao

Counterfactual explanations (CFEs) provide human-centric interpretability by identifying the minimal, actionable changes required to alter a machine learning model's prediction. Therefore, CFs can be used as (i) interventions for…

Language models (LMs) are pretrained on diverse data sources, including news, discussion forums, books, and online encyclopedias. A significant portion of this data includes opinions and perspectives which, on one hand, celebrate democracy…

计算与语言 · 计算机科学 2023-07-07 Shangbin Feng , Chan Young Park , Yuhan Liu , Yulia Tsvetkov

In neutrino physics, analyses often depend on large simulated datasets, making it essential for models to generalise effectively to real-world detector data. Contrastive learning, a well-established technique in deep learning, offers a…

高能物理 - 实验 · 物理学 2025-05-23 Alex Wilkinson , Radi Radev , Saul Alonso-Monsalve

Counterfactual explanations for machine learning models are used to find minimal interventions to the feature values such that the model changes the prediction to a different output or a target output. A valid counterfactual explanation…

机器学习 · 计算机科学 2023-03-23 Shravan Kumar Sajja , Sumanta Mukherjee , Satyam Dwivedi

Counterfactual instances are a powerful tool to obtain valuable insights into automated decision processes, describing the necessary minimal changes in the input space to alter the prediction towards a desired target. Most previous…

机器学习 · 计算机科学 2021-06-07 Robert-Florian Samoilescu , Arnaud Van Looveren , Janis Klaise

We propose a novel approach to mitigate biases in computer vision models by utilizing counterfactual generation and fine-tuning. While counterfactuals have been used to analyze and address biases in DNN models, the counterfactuals…

计算机视觉与模式识别 · 计算机科学 2024-07-01 Pushkar Shukla , Dhruv Srikanth , Lee Cohen , Matthew Turk

Semantic representation learning for sentences is an important and well-studied problem in NLP. The current trend for this task involves training a Transformer-based sentence encoder through a contrastive objective with text, i.e.,…

计算与语言 · 计算机科学 2022-09-21 Yiren Jian , Chongyang Gao , Soroush Vosoughi

We examine whether neural natural language processing (NLP) systems reflect historical biases in training data. We define a general benchmark to quantify gender bias in a variety of neural NLP tasks. Our empirical evaluation with…

计算与语言 · 计算机科学 2019-06-03 Kaiji Lu , Piotr Mardziel , Fangjing Wu , Preetam Amancharla , Anupam Datta

Counterfactuals refer to minimally edited inputs that cause a model's prediction to change, serving as a promising approach to explaining the model's behavior. Large language models (LLMs) excel at generating English counterfactuals and…

Convolutional neural networks have been successfully applied to various NLP tasks. However, it is not obvious whether they model different linguistic patterns such as negation, intensification, and clause compositionality to help the…

计算与语言 · 计算机科学 2018-10-23 Mahnaz Koupaee , William Yang Wang

Even as deep neural networks (DNNs) have achieved remarkable success on vision-related tasks, their performance is brittle to transformations in the input. Of particular interest are semantic transformations that model changes that have a…

Adversarial attacks alter NLP model predictions by perturbing test-time inputs. However, it is much less understood whether, and how, predictions can be manipulated with small, concealed changes to the training data. In this work, we…

计算与语言 · 计算机科学 2021-04-13 Eric Wallace , Tony Z. Zhao , Shi Feng , Sameer Singh