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Recent work has identified noisy and misannotated data as a core cause of hallucinations and unfaithful outputs in Natural Language Generation (NLG) tasks. Consequently, identifying and removing these examples is a key open challenge in…

Computation and Language · Computer Science 2023-07-12 Faisal Ladhak , Esin Durmus , Tatsunori Hashimoto

Recently, neural networks have shown impressive progress across diverse fields, with speech processing being no exception. However, recent breakthroughs in this area require extensive offline training using large datasets and tremendous…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-05 Umberto Cappellazzo , Enrico Fini , Muqiao Yang , Daniele Falavigna , Alessio Brutti , Bhiksha Raj

Learning self-supervised representations using reconstruction or contrastive losses improves performance and sample complexity of image-based and multimodal reinforcement learning (RL). Here, different self-supervised loss functions have…

Machine Learning · Computer Science 2024-06-27 Philipp Becker , Sebastian Mossburger , Fabian Otto , Gerhard Neumann

Despite exciting progress in causal language models, the expressiveness of the representations is largely limited due to poor discrimination ability. To remedy this issue, we present ContraCLM, a novel contrastive learning framework at both…

Current multimodal models leveraging contrastive learning often face limitations in developing fine-grained conceptual understanding. This is due to random negative samples during pretraining, causing almost exclusively very dissimilar…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Philipp J. Rösch , Norbert Oswald , Michaela Geierhos , Jindřich Libovický

With the increase in the learning capability of deep convolution-based architectures, various applications of such models have been proposed over time. In the field of anomaly detection, improvements in deep learning opened new prospects of…

Computer Vision and Pattern Recognition · Computer Science 2021-05-25 Jin-Ha Lee , Marcella Astrid , Muhammad Zaigham Zaheer , Seung-Ik Lee

Online continual learning (OCL) aims to enable model learning from a non-stationary data stream to continuously acquire new knowledge as well as retain the learnt one, under the constraints of having limited system size and computational…

Computer Vision and Pattern Recognition · Computer Science 2023-01-16 Sheng-Feng Yu , Wei-Chen Chiu

Machine learning models often suffer from catastrophic forgetting of previously learned knowledge when learning new classes. Various methods have been proposed to mitigate this issue. However, rehearsal-based learning, which retains samples…

Machine Learning · Computer Science 2024-10-10 Hossein Rezaei , Mohammad Sabokrou

As instruction-tuned large language models (LLMs) evolve, aligning pretrained foundation models presents increasing challenges. Existing alignment strategies, which typically leverage diverse and high-quality data sources, often overlook…

Computation and Language · Computer Science 2024-06-10 Yikun Wang , Rui Zheng , Liang Ding , Qi Zhang , Dahua Lin , Dacheng Tao

Contrastive self-supervised learning (CSL) with a prototypical regularization has been introduced in learning meaningful representations for downstream tasks that require strong semantic information. However, to optimize CSL with a loss…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Shentong Mo , Zhun Sun , Chao Li

Novel intent class detection is an important problem in real world scenario for conversational agents for continuous interaction. Several research works have been done to detect novel intents in a mono-lingual (primarily English) texts and…

Computation and Language · Computer Science 2023-04-24 Ankan Mullick

Conformal prediction is a model-agnostic approach to generating prediction sets that cover the true class with a high probability. Although its prediction set size is expected to capture aleatoric uncertainty, there is a lack of evidence…

Machine Learning · Computer Science 2025-11-24 Misgina Tsighe Hagos , Claes Lundström

Current approaches to novelty or anomaly detection are based on deep neural networks. Despite their effectiveness, neural networks are also vulnerable to imperceptible deformations of the input data. This is a serious issue in critical…

Computer Vision and Pattern Recognition · Computer Science 2023-06-07 Ranya Almohsen , Shivang Patel , Donald A. Adjeroh , Gianfranco Doretto

Image captioning, a popular topic in computer vision, has achieved substantial progress in recent years. However, the distinctiveness of natural descriptions is often overlooked in previous work. It is closely related to the quality of…

Computer Vision and Pattern Recognition · Computer Science 2017-10-10 Bo Dai , Dahua Lin

The learn-to-compare paradigm of contrastive representation learning (CRL), which compares positive samples with negative ones for representation learning, has achieved great success in a wide range of domains, including natural language…

Information Retrieval · Computer Science 2022-06-02 Lanling Xu , Jianxun Lian , Wayne Xin Zhao , Ming Gong , Linjun Shou , Daxin Jiang , Xing Xie , Ji-Rong Wen

Novelty detection is a process for distinguishing the observations that differ in some respect from the observations that the model is trained on. Novelty detection is one of the fundamental requirements of a good classification or…

Computer Vision and Pattern Recognition · Computer Science 2019-04-10 Mahdyar Ravanbakhsh

Contrastive vision-language models, such as CLIP, have garnered considerable attention for various downstream tasks, mainly due to the remarkable ability of the learned features for generalization. However, the features they learned often…

Computer Vision and Pattern Recognition · Computer Science 2025-04-24 Yichao Cai , Yuhang Liu , Zhen Zhang , Javen Qinfeng Shi

The goal of contrastive learning based pre-training is to leverage large quantities of unlabeled data to produce a model that can be readily adapted downstream. Current approaches revolve around solving an image discrimination task: given…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Chenhongyi Yang , Lichao Huang , Elliot J. Crowley

Recently, deep end-to-end learning has been studied for intent classification in Spoken Language Understanding (SLU). However, end-to-end models require a large amount of speech data with intent labels, and highly optimized models are…

Computation and Language · Computer Science 2024-05-27 Suyoung Kim , Jiyeon Hwang , Ho-Young Jung

Requirement of large annotated datasets restrict the use of deep convolutional neural networks (CNNs) for many practical applications. The problem can be mitigated by using active learning (AL) techniques which, under a given annotation…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Sharat Agarwal , Himanshu Arora , Saket Anand , Chetan Arora