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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…

机器学习 · 计算机科学 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…

机器学习 · 计算机科学 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.…

机器学习 · 计算机科学 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…

信息检索 · 计算机科学 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,…

机器学习 · 计算机科学 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…

信息检索 · 计算机科学 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…

机器学习 · 计算机科学 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…

信息检索 · 计算机科学 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…

信息检索 · 计算机科学 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,…

计算机视觉与模式识别 · 计算机科学 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…

机器学习 · 计算机科学 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,…

机器学习 · 计算机科学 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…

计算机视觉与模式识别 · 计算机科学 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…

计算与语言 · 计算机科学 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…

信息检索 · 计算机科学 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…

信息检索 · 计算机科学 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…

机器学习 · 计算机科学 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…

计算机视觉与模式识别 · 计算机科学 2026-02-02 Tyler Zhu , Tengda Han , Leonidas Guibas , Viorica Pătrăucean , Maks Ovsjanikov
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