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Recommender systems traditionally represent items using unique identifiers (ItemIDs), but this approach struggles with large, dynamic item corpora and sparse long-tail data, limiting scalability and generalization. Semantic IDs, derived…

Information Retrieval · Computer Science 2026-03-03 Yi Xu , Moyu Zhang , Chenxuan Li , Zhihao Liao , Haibo Xing , Hao Deng , Jinxin Hu , Yu Zhang , Xiaoyi Zeng , Jing Zhang

Distantly supervised named entity recognition (DS-NER) efficiently reduces labor costs but meanwhile intrinsically suffers from the label noise due to the strong assumption of distant supervision. Typically, the wrongly labeled instances…

Computation and Language · Computer Science 2023-02-16 Xinghua Zhang , Bowen Yu , Tingwen Liu , Zhenyu Zhang , Jiawei Sheng , Mengge Xue , Hongbo Xu

Long-context models (LCMs) have demonstrated great potential in processing long sequences, facilitating many real-world applications. The success of LCMs can be attributed to their ability to locate implicit critical information within the…

Computation and Language · Computer Science 2025-11-05 Zecheng Tang , Baibei Ji , Juntao Li , Lijun Wu , Haijia Gui , Min Zhang

Recent advances in Large Language Models (LLMs) have shifted in recommendation systems from the discriminative paradigm to the LLM-based generative paradigm, where the recommender autoregressively generates sequences of semantic identifiers…

Information Retrieval · Computer Science 2026-03-03 Jiawei Feng , Xiaoyu Kong , Leheng Sheng , Bin Wu , Chao Yi , Feifang Yang , Xiang-Rong Sheng , Han Zhu , Xiang Wang , Jiancan Wu , Xiangnan He

Long-tailed learning has attracted much attention recently, with the goal of improving generalisation for tail classes. Most existing works use supervised learning without considering the prevailing noise in the training dataset. To move…

Machine Learning · Computer Science 2021-08-27 Tong Wei , Jiang-Xin Shi , Wei-Wei Tu , Yu-Feng Li

The success of speech-image retrieval relies on establishing an effective alignment between speech and image. Existing methods often model cross-modal interaction through simple cosine similarity of the global feature of each modality,…

Computation and Language · Computer Science 2024-09-12 Lifeng Zhou , Yuke Li , Rui Deng , Yuting Yang , Haoqi Zhu

Current out-of-distribution (OOD) detection methods typically assume balanced in-distribution (ID) data, while most real-world data follow a long-tailed distribution. Previous approaches to long-tailed OOD detection often involve balancing…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Yina He , Lei Peng , Yongcun Zhang , Juanjuan Weng , Zhiming Luo , Shaozi Li

Reliable learning of multimodal data (e.g., multi-omics) is a widely concerning issue, especially in safety-critical applications such as medical diagnosis. However, low-quality data induced by multimodal noise poses a major challenge in…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Shu Shen , C. L. Philip Chen , Tong Zhang

Task-oriented semantic communication systems have emerged as a promising approach to achieving efficient and intelligent data transmission in next-generation networks, where only information relevant to a specific task is communicated. This…

Machine Learning · Computer Science 2025-07-03 Omar Erak , Omar Alhussein , Wen Tong

One key property in recommender systems is the long-tail distribution in user-item interactions where most items only have few user feedback. Improving the recommendation of tail items can promote novelty and bring positive effects to both…

Information Retrieval · Computer Science 2022-10-11 Tieyun Qian , Yile Liang , Qing Li , Xuan Ma , Ke Sun , Zhiyong Peng

Deep learning recommendation models (DLRMs) are at the heart of the current e-commerce industry. However, the amount of training data used to train these large models is growing exponentially, leading to substantial training hurdles. The…

Information Retrieval · Computer Science 2024-07-25 Hossein Entezari Zarch , Abdulla Alshabanah , Chaoyi Jiang , Murali Annavaram

Training recommender systems for next-item recommendation often requires unique embeddings to be learned for each item, which may take up most of the trainable parameters for a model. Shared embeddings, such as using content information,…

Information Retrieval · Computer Science 2025-07-28 M. Jeffrey Mei , Florian Henkel , Samuel E. Sandberg , Oliver Bembom , Andreas F. Ehmann

knowledge graph-based recommendation methods have achieved great success in the field of recommender systems. However, over-reliance on high-quality knowledge graphs is a bottleneck for such methods. Specifically, the long-tailed…

Information Retrieval · Computer Science 2023-10-03 Yubo Gao , Haotian Wu

In real-world scenarios, deep learning models often face challenges from both imbalanced (long-tailed) and out-of-distribution (OOD) data. However, existing joint methods rely on real OOD data, which leads to unnecessary trade-offs. In…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Xuan Zhang , Sin Chee Chin , Tingxuan Gao , Wenming Yang

We consider a standard distributed optimization problem in which networked nodes collaboratively minimize the sum of their locally known convex costs. For this setting, we address for the first time the fundamental problem of design and…

Optimization and Control · Mathematics 2025-06-02 Manojlo Vukovic , Dusan Jakovetic , Dragana Bajovic , Soummya Kar

Despite significant progress, recent studies indicate that current large language models (LLMs) may still capture dataset biases and utilize them during inference, leading to the poor generalizability of LLMs. However, due to the diversity…

Computation and Language · Computer Science 2025-05-28 Zhouhao Sun , Xiao Ding , Li Du , Yunpeng Xu , Yixuan Ma , Yang Zhao , Bing Qin , Ting Liu

Content moderation typically combines the efforts of human moderators and machine learning models. However, these systems often rely on data where significant disagreement occurs during moderation, reflecting the subjective nature of…

Computation and Language · Computer Science 2025-09-01 Guillermo Villate-Castillo , Javier Del Ser , Borja Sanz

Intent Classification (IC) and Slot Labeling (SL) models, which form the basis of dialogue systems, often encounter noisy data in real-word environments. In this work, we investigate how robust IC/SL models are to noisy data. We collect and…

Computation and Language · Computer Science 2021-11-03 Sailik Sengupta , Jason Krone , Saab Mansour

Accurately classifying accents and assessing accentedness in non-native speakers are both challenging tasks due to the complexity and diversity of accent and dialect variations. In this study, embeddings from advanced pre-trained language…

Audio and Speech Processing · Electrical Eng. & Systems 2023-10-18 Shahram Ghorbani , John H. L. Hansen

Existing approaches for unsupervised 3D point cloud segmentation predominantly rely on a purely visual similarity-based learning-by-clustering paradigm, which suffers from a fundamental limitation: long-tail ambiguity. In such a paradigm,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Siqi Wei , Hongbin Xu , Feng Xiao , Tian Lan , Chun Li , Ming Li , Qiuxia Wu