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This paper introduces a novel approach to learn visually grounded meaning representations of words as low-dimensional node embeddings on an underlying graph hierarchy. The lower level of the hierarchy models modality-specific word…

Computation and Language · Computer Science 2021-09-08 Mariella Dimiccoli , Herwig Wendt , Pau Batlle

Modern recommender systems face critical challenges in handling information overload while addressing the inherent limitations of multimodal representation learning. Existing methods suffer from three fundamental limitations: (1) restricted…

Information Retrieval · Computer Science 2025-08-15 Zheyu Chen , Jinfeng Xu , Hewei Wang , Shuo Yang , Zitong Wan , Haibo Hu

With the daily influx of 3D data on the internet, text-3D retrieval has gained increasing attention. However, current methods face two major challenges: Hierarchy Representation Collapse (HRC) and Redundancy-Induced Saliency Dilution…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Wenrui Li , Yidan Lu , Yeyu Chai , Rui Zhao , Hengyu Man , Xiaopeng Fan

Multi-task learning (MTL) is a common machine learning technique that allows the model to share information across different tasks and improve the accuracy of recommendations for all of them. Many existing MTL implementations suffer from…

Information Retrieval · Computer Science 2025-04-09 Luyang Wang , Cangcheng Tang , Chongyang Zhang , Jun Ruan , Kai Huang , Jason Dai

We propose HILBERT (HIerarchical Long-sequence Balanced Embedding with Reciprocal contrastive Training), a cross-attentive multimodal framework for learning document-level audio-text representations from long, segmented sequences in…

Machine Learning · Computer Science 2026-04-20 Habibeh Naderi , Behrouz Haji Soleimani , Stan Matwin

Multimodal intent recognition aims to infer human intents by jointly modeling various modalities, playing a pivotal role in real-world dialogue systems. However, current methods struggle to model hierarchical semantics underlying complex…

Multimedia · Computer Science 2026-03-05 Qianrui Zhou , Hua Xu , Yunjin Gu , Yifan Wang , Songze Li , Hanlei Zhang

Explainable Recommender System (ExRec) provides transparency to the recommendation process, increasing users' trust and boosting the operation of online services. With the rise of large language models (LLMs), whose extensive world…

Information Retrieval · Computer Science 2025-07-15 Bangcheng Sun , Yazhe Chen , Jilin Yang , Xiaodong Li , Hui Li

Sequential recommendation models, particularly those based on attention, achieve strong accuracy but incur quadratic complexity, making long user histories prohibitively expensive. Sub-quadratic operators such as Hyena provide efficient…

Information Retrieval · Computer Science 2026-03-27 Jiahao Liu , Lin Li , Zhiyuan Li , Kaixi Hu , Kaize Shi , Jingling Yuan

HyperGraph Convolutional Neural Networks (HGCNNs) have demonstrated their potential in modeling high-order relations preserved in graph structured data. However, most existing convolution filters are localized and determined by the…

Machine Learning · Computer Science 2021-06-11 Jiying Zhang , Yuzhao Chen , Xi Xiao , Runiu Lu , Shu-Tao Xia

Video Referring Expression Comprehension (REC) aims to localize a target object in video frames referred by the natural language expression. Recently, the Transformerbased methods have greatly boosted the performance limit. However, we…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Ji Jiang , Meng Cao , Tengtao Song , Yuexian Zou

While graph neural networks (GNNs) have gained popularity for learning circuit representations in various electronic design automation (EDA) tasks, they face challenges in scalability when applied to large graphs and exhibit limited…

Machine Learning · Computer Science 2024-04-12 Chenhui Deng , Zichao Yue , Cunxi Yu , Gokce Sarar , Ryan Carey , Rajeev Jain , Zhiru Zhang

Retrieval-augmented generation (RAG) enhances large language models with external knowledge, and tree-based RAG organizes documents into hierarchical indexes to support queries at multiple granularities. However, existing Tree-RAG methods…

Machine Learning · Computer Science 2026-05-04 Ziwen Zhao , Menglin Yang

Emotion Recognition in Conversation (ERC) is a more challenging task than conventional text emotion recognition. It can be regarded as a personalized and interactive emotion recognition task, which is supposed to consider not only the…

Computation and Language · Computer Science 2021-01-01 Jiangnan Li , Zheng Lin , Peng Fu , Qingyi Si , Weiping Wang

Hierarchical DQN (h-DQN) is a two-level architecture of feedforward neural networks where the meta level selects goals and the lower level takes actions to achieve the goals. We show tasks that cannot be solved by h-DQN, exemplifying the…

Artificial Intelligence · Computer Science 2020-06-23 Weihang Yuan , Héctor Muñoz-Avila

Understanding human--environment interactions from egocentric vision is essential for assistive robotics and embodied intelligent agents, yet existing multimodal large language models (MLLMs) still struggle with accurate interaction…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Yuejiao Su , Xinshen Zhang , Zhen Ye , Lei Yao , Lap-Pui Chau , Yi Wang

Entity alignment (EA) plays an important role in automatically integrating knowledge graphs (KGs) from multiple sources. Recent approaches based on Graph Neural Network (GNN) obtain entity representation from relation information and have…

Computation and Language · Computer Science 2021-10-26 Xueyuan Lin , Haihong E , Wenyu Song , Haoran Luo

Parameter efficient adaptation methods have become a key mechanism to train large pre-trained models for downstream tasks. However, their per-task parameter overhead is considered still high when the number of downstream tasks to adapt for…

Audio and Speech Processing · Electrical Eng. & Systems 2024-04-01 Tsendsuren Munkhdalai , Youzheng Chen , Khe Chai Sim , Fadi Biadsy , Tara Sainath , Pedro Moreno Mengibar

We present a new recurrent neural network topology to enhance state-of-the-art machine learning systems by incorporating a broader context. Our approach overcomes recent limitations with extended narratives through a multi-layered…

Computation and Language · Computer Science 2018-08-07 Patrick Huber , Jan Niehues , Alex Waibel

The paper focuses on the interpretability of Grammatical Error Correction (GEC) evaluation metrics, which received little attention in previous studies. To bridge the gap, we introduce **CLEME2.0**, a reference-based metric describing four…

Computation and Language · Computer Science 2025-05-30 Jingheng Ye , Zishan Xu , Yinghui Li , Linlin Song , Qingyu Zhou , Hai-Tao Zheng , Ying Shen , Wenhao Jiang , Hong-Gee Kim , Ruitong Liu , Xin Su , Zifei Shan

Video Referring Expression Comprehension (REC) aims to localize a target object in videos based on the queried natural language. Recent improvements in video REC have been made using Transformer-based methods with learnable queries.…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Ji Jiang , Meng Cao , Tengtao Song , Long Chen , Yi Wang , Yuexian Zou
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