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User behavior sequences in modern recommendation systems exhibit significant length heterogeneity, ranging from sparse short-term interactions to rich long-term histories. While longer sequences provide more context, we observe that…

Artificial Intelligence · Computer Science 2026-01-28 Zhicheng Zhang , Zhaocheng Du , Jieming Zhu , Jiwei Tang , Fengyuan Lu , Wang Jiaheng , Song-Li Wu , Qianhui Zhu , Jingyu Li , Hai-Tao Zheng , Zhenhua Dong

The deployment of Large Language Models (LLMs) in recommender systems for predicting Click-Through Rates (CTR) necessitates a delicate balance between computational efficiency and predictive accuracy. This paper presents an optimization…

Multi-touch attribution (MTA) currently plays a pivotal role in achieving a fair estimation of the contributions of each advertising touchpoint to-wards conversion behavior, deeply influencing budget allocation and advertising…

Machine Learning · Computer Science 2024-02-06 Jiaming Tang

Robust generalization under climate change remains a major challenge for machine learning applications in climate science. Most existing approaches struggle to extrapolate beyond the climate they were trained on, leading to a strong…

Atmospheric and Oceanic Physics · Physics 2025-09-03 Shuchang Liu , Paul A. O'Gorman

Click-Through Rate (CTR) prediction is one of the core tasks in recommender systems (RS). It predicts a personalized click probability for each user-item pair. Recently, researchers have found that the performance of CTR model can be…

Information Retrieval · Computer Science 2021-08-11 Qiwei Chen , Changhua Pei , Shanshan Lv , Chao Li , Junfeng Ge , Wenwu Ou

Sequential recommender systems aim to predict a user's future interests by extracting temporal patterns from their behavioral history. Existing approaches typically employ transformer-based architectures to process long sequences of user…

Information Retrieval · Computer Science 2026-02-24 Adamya Shyam , Venkateswara Rao Kagita , Bharti Rana , Vikas Kumar

When handling streaming graphs, existing graph representation learning models encounter a catastrophic forgetting problem, where previously learned knowledge of these models is easily overwritten when learning with newly incoming graphs. In…

Machine Learning · Computer Science 2024-07-11 Yilun Liu , Ruihong Qiu , Yanran Tang , Hongzhi Yin , Zi Huang

Cross-Domain Recommendation (CDR) and Cross-System Recommendation (CSR) have been proposed to improve the recommendation accuracy in a target dataset (domain/system) with the help of a source one with relatively richer information. However,…

Information Retrieval · Computer Science 2021-08-19 Feng Zhu , Yan Wang , Jun Zhou , Chaochao Chen , Longfei Li , Guanfeng Liu

Capturing the evolving trends of user interest is important for both recommendation systems and advertising systems, and user behavior sequences have been successfully used in Click-Through-Rate(CTR) prediction problems. However, if the…

Information Retrieval · Computer Science 2022-10-10 Dike Sun , Kai Liu , ShengKai Yang

Non-Orthogonal Multiple Access (NOMA) technology has emerged as a promising technology to enable massive connectivity and enhanced spectral efficiency in next-generation wireless networks. In this study, we propose a novel two-user downlink…

Information Theory · Computer Science 2025-12-19 Emirhan Zor , Bora Bozkurt , Ferkan Yilmaz

The design choices in the Transformer attention mechanism, including weak inductive bias and quadratic computational complexity, have limited its application for modeling long sequences. In this paper, we introduce Mega, a simple,…

Machine Learning · Computer Science 2023-01-31 Xuezhe Ma , Chunting Zhou , Xiang Kong , Junxian He , Liangke Gui , Graham Neubig , Jonathan May , Luke Zettlemoyer

We investigate response selection for multi-turn conversation in retrieval-based chatbots. Existing studies pay more attention to the matching between utterances and responses by calculating the matching score based on learned features,…

Computation and Language · Computer Science 2021-01-18 Yongkang Liu , Shi Feng , Daling Wang , Kaisong Song , Feiliang Ren , Yifei Zhang

Time-series data analysis is important because numerous real-world tasks such as forecasting weather, electricity consumption, and stock market involve predicting data that vary over time. Time-series data are generally recorded over a long…

Machine Learning · Computer Science 2022-10-07 Bumjun Jung , Yusuke Mukuta , Tatsuya Harada

Popular graph neural networks implement convolution operations on graphs based on polynomial spectral filters. In this paper, we propose a novel graph convolutional layer inspired by the auto-regressive moving average (ARMA) filter that,…

Machine Learning · Computer Science 2021-04-07 Filippo Maria Bianchi , Daniele Grattarola , Lorenzo Livi , Cesare Alippi

Crosscorrelation of the outputs of two Gravitational Wave (GW) detectors has recently been proposed [1] as a method for detecting statistical association between GWs and Gamma Ray Bursts (GRBs). Unfortunately, the method can be effectively…

Astrophysics · Physics 2009-11-07 G. Modestino , A. Moleti

Click-through rate (CTR) prediction plays an indispensable role in online platforms. Numerous models have been proposed to capture users' shifting preferences by leveraging user behavior sequences. However, these historical sequences often…

Information Retrieval · Computer Science 2024-04-16 Junjie Huang , Guohao Cai , Jieming Zhu , Zhenhua Dong , Ruiming Tang , Weinan Zhang , Yong Yu

Sequential recommendation systems aim to provide personalized recommendations by analyzing dynamic preferences and dependencies within user behavior sequences. Recently, Transformer models can effectively capture user preferences. However,…

Information Retrieval · Computer Science 2024-07-30 Shun Zhang , Runsen Zhang , Zhirong Yang

Click-through rate (CTR) prediction is a critical problem in web search, recommendation systems and online advertisement displaying. Learning good feature interactions is essential to reflect user's preferences to items. Many CTR prediction…

Information Retrieval · Computer Science 2021-05-13 Yuan Cheng , Yanbo Xue

Estimating click-through rate (CTR) accurately has an essential impact on improving user experience and revenue in sponsored search. For CTR prediction model, it is necessary to make out user real-time search intention. Most of the current…

Machine Learning · Computer Science 2021-03-31 Feng Li , Zhenrui Chen , Pengjie Wang , Yi Ren , Di Zhang , Xiaoyu Zhu

Compressive random access (CRA) is a random access scheme that has been considered for massive machine-type communication (MTC) with non-orthogonal spreading sequences, where the notion of compressive sensing (CS) is used for low-complexity…

Information Theory · Computer Science 2019-01-01 Jinho Choi