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Recent advancements in transformer-based models have greatly improved time series analysis, providing robust solutions for tasks such as forecasting, anomaly detection, and classification. A crucial element of these models is positional…

Machine Learning · Computer Science 2026-05-07 Habib Irani , Vangelis Metsis

This study reports an unintuitive finding that positional encoding enhances learning of recurrent neural networks (RNNs). Positional encoding is a high-dimensional representation of time indices on input data. Most famously, positional…

Machine Learning · Computer Science 2024-11-28 Takashi Morita

Temporal graph learning has applications in recommendation systems, traffic forecasting, and social network analysis. Although multiple architectures have been introduced, progress in positional encoding for temporal graphs remains limited.…

Machine Learning · Computer Science 2025-06-03 Yaniv Galron , Fabrizio Frasca , Haggai Maron , Eran Treister , Moshe Eliasof

Sequential recommendation (SR), which encodes user activity to predict the next action, has emerged as a widely adopted strategy in developing commercial personalized recommendation systems. A critical component of modern SR models is the…

Information Retrieval · Computer Science 2025-02-25 Jun Yuan , Guohao Cai , Zhenhua Dong

Analyzing sequential data is crucial in many domains, particularly due to the abundance of data collected from the Internet of Things paradigm. Time series classification, the task of categorizing sequential data, has gained prominence,…

Machine Learning · Computer Science 2024-06-21 Venkata Ragavendra Vavilthota , Ranjith Ramanathan , Sathyanarayanan N. Aakur

Sequential recommender systems (SRS) could capture dynamic user preferences by modeling historical behaviors ordered in time. Despite effectiveness, focusing only on the \textit{collaborative signals} from behaviors does not fully grasp…

Information Retrieval · Computer Science 2024-09-20 Mingyue Cheng , Hao Zhang , Qi Liu , Fajie Yuan , Zhi Li , Zhenya Huang , Enhong Chen , Jun Zhou , Longfei Li

High-dimensional observations are a major challenge in the application of model-based reinforcement learning (MBRL) to real-world environments. To handle high-dimensional sensory inputs, existing approaches use representation learning to…

Machine Learning · Computer Science 2021-06-15 Tung Nguyen , Rui Shu , Tuan Pham , Hung Bui , Stefano Ermon

Self-attention-based networks have achieved remarkable performance in sequential recommendation tasks. A crucial component of these models is positional encoding. In this study, we delve into the learned positional embedding, demonstrating…

Information Retrieval · Computer Science 2024-11-27 Fan Luo , Haibo He , Juan Zhang , Shenghui Xu

Sequential Recommender Systems (SRSs) are widely employed to model user behavior over time. However, their robustness in the face of perturbations in training data remains a largely understudied yet critical issue. A fundamental challenge…

Information Retrieval · Computer Science 2024-05-03 Filippo Betello , Federico Siciliano , Pushkar Mishra , Fabrizio Silvestri

Recently, there have been efforts to improve the performance in sign language recognition by designing self-supervised learning methods. However, these methods capture limited information from sign pose data in a frame-wise learning manner,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Weichao Zhao , Wengang Zhou , Hezhen Hu , Min Wang , Houqiang Li

Accurate predictions rely on the expressiveness power of graph deep learning frameworks like graph neural networks and graph transformers, where a positional encoding mechanism has become much more indispensable in recent state-of-the-art…

Machine Learning · Computer Science 2025-06-12 Katherine Tieu , Dongqi Fu , Zihao Li , Ross Maciejewski , Jingrui He

Transformers have revolutionized machine learning across diverse domains, yet understanding their behavior remains crucial, particularly in high-stakes applications. This paper introduces the contextual counting task, a novel toy problem…

Neural language models process sequences of words, but the mathematical operations inside them are insensitive to the order in which words appear. Positional encodings are the component added to remedy this. Despite their importance,…

Machine Learning · Computer Science 2026-04-08 Giansalvo Cirrincione

Temporal action localization is an important and challenging task that aims to locate temporal regions in real-world untrimmed videos where actions occur and recognize their classes. It is widely acknowledged that video context is a…

Computer Vision and Pattern Recognition · Computer Science 2021-03-10 Xin Qin , Hanbin Zhao , Guangchen Lin , Hao Zeng , Songcen Xu , Xi Li

In order to preserve word-order information in a non-autoregressive setting, transformer architectures tend to include positional knowledge, by (for instance) adding positional encodings to token embeddings. Several modifications have been…

Computation and Language · Computer Science 2021-09-14 Vinit Ravishankar , Anders Søgaard

In order to model the evolution of user preference, we should learn user/item embeddings based on time-ordered item purchasing sequences, which is defined as Sequential Recommendation (SR) problem. Existing methods leverage sequential…

Information Retrieval · Computer Science 2021-08-24 Ziwei Fan , Zhiwei Liu , Jiawei Zhang , Yun Xiong , Lei Zheng , Philip S. Yu

The mobile app market has expanded exponentially, offering millions of apps with diverse functionalities, yet research in mobile app recommendation remains limited. Traditional sequential recommender systems utilize the order of items in…

Information Retrieval · Computer Science 2025-06-17 M. H. Maqbool , Moghis Fereidouni , Umar Farooq , A. B. Siddique , Hassan Foroosh

The rapid growth of location-based services (LBS) has yielded massive amounts of data on human mobility. Effectively extracting meaningful representations for user-generated check-in sequences is pivotal for facilitating various downstream…

Machine Learning · Computer Science 2024-07-26 Letian Gong , Huaiyu Wan , Shengnan Guo , Xiucheng Li , Yan Lin , Erwen Zheng , Tianyi Wang , Zeyu Zhou , Youfang Lin

Sequential Recommender Systems (SRSs) have emerged as a highly efficient approach to recommendation systems. By leveraging sequential data, SRSs can identify temporal patterns in user behaviour, significantly improving recommendation…

The alignment of representations from different modalities has recently been shown to provide insights on the structural similarities and downstream capabilities of different encoders across diverse data types. While significant progress…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 Tyler Zhu , Tengda Han , Leonidas Guibas , Viorica Pătrăucean , Maks Ovsjanikov
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