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Conversational search (CS) needs a holistic understanding of conversational inputs to retrieve relevant passages. In this paper, we demonstrate the existence of a retrieval shortcut in CS, which causes models to retrieve passages solely…

Computation and Language · Computer Science 2022-10-20 Sungdong Kim , Gangwoo Kim

The proliferation of misinformation necessitates robust yet computationally efficient fact verification systems. While current state-of-the-art approaches leverage Large Language Models (LLMs) for generating explanatory rationales, these…

Computation and Language · Computer Science 2025-11-10 Alamgir Munir Qazi , John P. McCrae , Jamal Abdul Nasir

Privacy preserving deep learning is an emerging field in machine learning that aims to mitigate the privacy risks in the use of deep neural networks. One such risk is training data extraction from language models that have been trained on…

Computation and Language · Computer Science 2024-12-02 Andor Diera , Nicolas Lell , Aygul Garifullina , Ansgar Scherp

Deep learning has transformed AI applications but faces critical security challenges, including adversarial attacks, data poisoning, model theft, and privacy leakage. This survey examines these vulnerabilities, detailing their mechanisms…

While state-of-the-art Deep Neural Network (DNN) models are considered to be robust to random perturbations, it was shown that these architectures are highly vulnerable to deliberately crafted perturbations, albeit being…

Machine Learning · Computer Science 2021-06-03 Omer Faruk Tuna , Ferhat Ozgur Catak , M. Taner Eskil

Current pre-trained language model approaches to information retrieval can be broadly divided into two categories: sparse retrievers (to which belong also non-neural approaches such as bag-of-words methods, e.g., BM25) and dense retrievers.…

Information Retrieval · Computer Science 2022-05-03 Hang Li , Shuai Wang , Shengyao Zhuang , Ahmed Mourad , Xueguang Ma , Jimmy Lin , Guido Zuccon

Preference learning is a central component for aligning current LLMs, but this process can be vulnerable to data poisoning attacks. To address this concern, we introduce PoisonBench, a benchmark for evaluating large language models'…

Cryptography and Security · Computer Science 2025-06-09 Tingchen Fu , Mrinank Sharma , Philip Torr , Shay B. Cohen , David Krueger , Fazl Barez

In adversarial machine learning, new defenses against attacks on deep learning systems are routinely broken soon after their release by more powerful attacks. In this context, forensic tools can offer a valuable complement to existing…

Cryptography and Security · Computer Science 2022-06-17 Shawn Shan , Arjun Nitin Bhagoji , Haitao Zheng , Ben Y. Zhao

We study the corruption-robustness of in-context reinforcement learning (ICRL), focusing on the Decision-Pretrained Transformer (DPT, Lee et al., 2023). To address the challenge of reward poisoning attacks targeting the DPT, we propose a…

Machine Learning · Computer Science 2025-09-30 Paulius Sasnauskas , Yiğit Yalın , Goran Radanović

Recent advancements in dense retrieval have introduced vision-language model (VLM)-based retrievers, such as DSE and ColPali, which leverage document screenshots embedded as vectors to enable effective search and offer a simplified pipeline…

Information Retrieval · Computer Science 2025-01-29 Shengyao Zhuang , Ekaterina Khramtsova , Xueguang Ma , Bevan Koopman , Jimmy Lin , Guido Zuccon

Neural information retrieval systems excel in high-resource languages but remain underexplored for morphologically rich, lower-resource languages such as Turkish. Dense bi-encoders currently dominate Turkish IR, yet late-interaction models…

Computation and Language · Computer Science 2025-11-21 Özay Ezerceli , Mahmoud El Hussieni , Selva Taş , Reyhan Bayraktar , Fatma Betül Terzioğlu , Yusuf Çelebi , Yağız Asker

Since Deep Learning (DL) backdoor attacks have been revealed as one of the most insidious adversarial attacks, a number of countermeasures have been developed with certain assumptions defined in their respective threat models. However, the…

Cryptography and Security · Computer Science 2022-04-14 Huming Qiu , Hua Ma , Zhi Zhang , Alsharif Abuadbba , Wei Kang , Anmin Fu , Yansong Gao

Convolutional Neural Networks and Deep Learning classification systems in general have been shown to be vulnerable to attack by specially crafted data samples that appear to belong to one class but are instead classified as another,…

Machine Learning · Computer Science 2019-02-18 Cody Burkard , Brent Lagesse

Randomized ensemble classifiers (RECs), where one classifier is randomly selected during inference, have emerged as an attractive alternative to traditional ensembling methods for realizing adversarially robust classifiers with limited…

Machine Learning · Computer Science 2023-05-30 Hassan Dbouk , Naresh R. Shanbhag

Backdoor attack has been considered as a serious security threat to deep neural networks (DNNs). Poisoned sample detection (PSD) that aims at filtering out poisoned samples from an untrustworthy training dataset has shown very promising…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Mingda Zhang , Mingli Zhu , Zihao Zhu , Baoyuan Wu

Despite their appealing flexibility, deep neural networks (DNNs) are vulnerable against adversarial examples. Various adversarial defense strategies have been proposed to resolve this problem, but they typically demonstrate restricted…

Machine Learning · Computer Science 2021-06-01 Zhijie Deng , Xiao Yang , Shizhen Xu , Hang Su , Jun Zhu

Recently embedding-based retrieval or dense retrieval have shown state of the art results, compared with traditional sparse or bag-of-words based approaches. This paper introduces a model-agnostic doc-level embedding framework through large…

Information Retrieval · Computer Science 2024-04-10 Mingrui Wu , Sheng Cao

Deep Neural Network-based systems are now the state-of-the-art in many robotics tasks, but their application in safety-critical domains remains dangerous without formal guarantees on network robustness. Small perturbations to sensor inputs…

Robotics · Computer Science 2020-03-10 Björn Lütjens , Michael Everett , Jonathan P. How

Deep neural networks (DNNs) exhibit superior performance in various machine learning tasks, e.g., image classification, speech recognition, biometric recognition, object detection, etc. However, it is essential to analyze their sensitivity…

Computer Vision and Pattern Recognition · Computer Science 2023-11-23 Renu Sharma , Redwan Sony , Arun Ross

Despite their impressive performance, deep convolutional neural networks (CNNs) have been shown to be sensitive to small adversarial perturbations. These nuisances, which one can barely notice, are powerful enough to fool sophisticated and…

Machine Learning · Statistics 2019-08-07 Yaniv Romano , Aviad Aberdam , Jeremias Sulam , Michael Elad
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