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Manual annotations are a prerequisite for many applications of machine learning. However, weaknesses in the annotation process itself are easy to overlook. In particular, scholars often choose what information to give to annotators without…

Social and Information Networks · Computer Science 2017-08-22 Kenneth Joseph , Lisa Friedland , William Hobbs , Oren Tsur , David Lazer

Accurately credit default prediction faces challenges due to imbalanced data and low correlation between features and labels. Existing default prediction studies on the basis of gradient boosting decision trees (GBDT), deep learning…

Computational Engineering, Finance, and Science · Computer Science 2023-12-06 Yandan Tan , Hongbin Zhu , JieWu , Hongfeng Chai

Test-time task adaptation in few-shot learning aims to adapt a pre-trained task-agnostic model for capturing taskspecific knowledge of the test task, rely only on few-labeled support samples. Previous approaches generally focus on…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Ji Zhang , Lianli Gao , Xu Luo , Hengtao Shen , Jingkuan Song

Generalized Category Discovery is a crucial real-world task. Despite the improved performance on known categories, current methods perform poorly on novel categories. We attribute the poor performance to two reasons: biased knowledge…

Computation and Language · Computer Science 2023-12-29 Wenbin An , Feng Tian , Wenkai Shi , Yan Chen , Yaqiang Wu , Qianying Wang , Ping Chen

As an algorithmic framework for learning to learn, meta-learning provides a promising solution for few-shot text classification. However, most existing research fail to give enough attention to class labels. Traditional basic framework…

Computation and Language · Computer Science 2024-12-16 Guanghua Hou , Shuhui Cao , Deqiang Ouyang , Ning Wang

This paper addresses the challenges of complex dependencies and diverse anomaly patterns in cloud service environments by proposing a dependency modeling and anomaly detection method that integrates contrastive learning. The method…

Machine Learning · Computer Science 2025-10-16 Yue Xing , Yingnan Deng , Heyao Liu , Ming Wang , Yun Zi , Xiaoxuan Sun

Few-shot text classification has recently been promoted by the meta-learning paradigm which aims to identify target classes with knowledge transferred from source classes with sets of small tasks named episodes. Despite their success,…

Computation and Language · Computer Science 2023-05-17 Junfan Chen , Richong Zhang , Yongyi Mao , Jie Xu

Stance detection, which aims to determine whether an individual is for or against a target concept, promises to uncover public opinion from large streams of social media data. Yet even human annotation of social media content does not…

Social and Information Networks · Computer Science 2021-09-08 Kenneth Joseph , Sarah Shugars , Ryan Gallagher , Jon Green , Alexi Quintana Mathé , Zijian An , David Lazer

Time series anomaly detection (TSAD) plays a vital role in many industrial applications. While contrastive learning has gained momentum in the time series domain for its prowess in extracting meaningful representations from unlabeled data,…

Machine Learning · Computer Science 2025-01-28 Katrina Chen , Mingbin Feng , Tony S. Wirjanto

Social graph-based fake news detection aims to identify news articles containing false information by utilizing social contexts, e.g., user information, tweets and comments. However, conventional methods are evaluated under less realistic…

Social and Information Networks · Computer Science 2024-11-21 Junghoon Kim , Junmo Lee , Yeonjun In , Kanghoon Yoon , Chanyoung Park

Meta-learning has emerged as an efficient approach for constructing target models based on support sets. For example, the meta-learned embeddings enable the construction of target nearest-neighbor classifiers for specific tasks by pulling…

Machine Learning · Computer Science 2023-09-19 Han-Jia Ye , Da-Wei Zhou , Lanqing Hong , Zhenguo Li , Xiu-Shen Wei , De-Chuan Zhan

The stance detection task aims to categorise the stance regarding specified targets. Current methods face challenges in effectively integrating sentiment information for stance detection. Moreover, the role of highly granular sentiment…

Computation and Language · Computer Science 2025-02-27 Beiyu Xu , Zhiwei Liu , Sophia Ananiadou

Fully Test-Time Adaptation (TTA), which aims at adapting models to data drifts, has recently attracted wide interest. Numerous tricks and techniques have been proposed to ensure robust learning on arbitrary streams of unlabeled data.…

Machine Learning · Computer Science 2023-11-13 Saypraseuth Mounsaveng , Florent Chiaroni , Malik Boudiaf , Marco Pedersoli , Ismail Ben Ayed

Stance Detection (SD) has become a critical area of interest due to its applications in various contexts leading to increased research within NLP. Yet the subtlety and complexity of texts sourced from online platforms often containing…

Computation and Language · Computer Science 2025-03-07 Gibson Nkhata Shi Yin Hong , Susan Gauch

Topic modelling is a pivotal unsupervised machine learning technique for extracting valuable insights from large document collections. Existing neural topic modelling methods often encode contextual information of documents, while ignoring…

Computation and Language · Computer Science 2025-02-07 Yanan Ma , Chenghao Xiao , Chenhan Yuan , Sabine N van der Veer , Lamiece Hassan , Chenghua Lin , Goran Nenadic

Discovering the stances of media outlets and influential people on current, debatable topics is important for social statisticians and policy makers. Many supervised solutions exist for determining viewpoints, but manually annotating…

Social and Information Networks · Computer Science 2020-05-22 Peter Stefanov , Kareem Darwish , Atanas Atanasov , Preslav Nakov

Deep neural networks are known to be vulnerable to unseen data: they may wrongly assign high confidence stcores to out-distribuion samples. Recent works try to solve the problem using representation learning methods and specific metrics. In…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Haowei He , Jiaye Teng , Yang Yuan

Many tasks related to Computational Social Science and Web Content Analysis involve classifying pieces of text based on the claims they contain. State-of-the-art approaches usually involve fine-tuning models on large annotated datasets,…

Computation and Language · Computer Science 2024-05-10 Sandrine Chausson , Björn Ross

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…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Zhitong Gao , Shipeng Yan , Xuming He

This work addresses the challenge of achieving zero-shot adversarial robustness while preserving zero-shot generalization in large-scale foundation models, with a focus on the popular Contrastive Language-Image Pre-training (CLIP). Although…

Computer Vision and Pattern Recognition · Computer Science 2024-05-29 Fengji Ma , Li Liu , Hei Victor Cheng