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Click-Through Rate (CTR) prediction, crucial in applications like recommender systems and online advertising, involves ranking items based on the likelihood of user clicks. User behavior sequence modeling has marked progress in CTR…

Information Retrieval · Computer Science 2023-08-22 Hengyu Zhang , Chang Meng , Wei Guo , Huifeng Guo , Jieming Zhu , Guangpeng Zhao , Ruiming Tang , Xiu Li

Click-Through Rate (CTR) prediction, a core task in recommendation systems, estimates user click likelihood using historical behavioral data. Modeling user behavior sequences as text to leverage Language Models (LMs) for this task has…

Computation and Language · Computer Science 2025-08-06 Zixuan Li , Binzong Geng , Jing Xiong , Yong He , Yuxuan Hu , Jian Chen , Dingwei Chen , Xiyu Chang , Liang Zhang , Linjian Mo , Chengming Li , Chuan Yuan , Zhenan Sun

Online decision making under uncertainty in partially observable domains, also known as Belief Space Planning, is a fundamental problem in robotics and Artificial Intelligence. Due to an abundance of plausible future unravelings,…

Artificial Intelligence · Computer Science 2023-02-15 Andrey Zhitnikov , Vadim Indelman

Click-Through Rate (CTR) prediction holds a pivotal place in online advertising and recommender systems since CTR prediction performance directly influences the overall satisfaction of the users and the revenue generated by companies. Even…

Information Retrieval · Computer Science 2024-05-22 Serdarcan Dilbaz , Hasan Saribas

Accurate click-through rate (CTR) prediction is vital for online advertising and recommendation systems. Recent deep learning advancements have improved the ability to capture feature interactions and understand user interests. However,…

Information Retrieval · Computer Science 2025-02-24 Kefan Wang , Hao Wang , Kenan Song , Wei Guo , Kai Cheng , Zhi Li , Yong Liu , Defu Lian , Enhong Chen

Efficiently scaling industrial Click-Through Rate (CTR) prediction has recently attracted significant research attention. Existing approaches typically employ early aggregation of user behaviors to maintain efficiency. However, such…

Information Retrieval · Computer Science 2026-02-12 Mingyang Liu , Yong Bai , Zhangming Chan , Sishuo Chen , Xiang-Rong Sheng , Han Zhu , Jian Xu , Xinyang Chen

Conversion rate (CVR) prediction is an essential task for large-scale e-commerce platforms. However, refund behaviors frequently occur after conversion in online shopping systems, which drives us to pay attention to effective conversion for…

Information Retrieval · Computer Science 2023-08-10 Yunfeng Zhao , Xu Yan , Xiaoqiang Gui , Shuguang Han , Xiang-Rong Sheng , Guoxian Yu , Jufeng Chen , Zhao Xu , Bo Zheng

The pre-ranking stage plays a pivotal role in large-scale recommender systems but faces an intrinsic trade-off between model expressiveness and computational efficiency. Owing to the massive candidate pool and strict latency constraints,…

Information Retrieval · Computer Science 2025-10-29 Yutian Xiao , Meng Yuan , Fuzhen Zhuang , Wei Chen , Shukuan Wang , Shanqi Liu , Chao Feng , Wenhui Yu , Xiang Li , Lantao Hu , Han Li , Zhao Zhang

Click-through rate (CTR) prediction serves as a cornerstone of recommender systems. Despite the strong performance of current CTR models based on user behavior modeling, they are still severely limited by interaction sparsity, especially in…

Information Retrieval · Computer Science 2025-09-03 Yutian Xiao , Shukuan Wang , Binhao Wang , Zhao Zhang , Yanze Zhang , Shanqi Liu , Chao Feng , Xiang Li , Fuzhen Zhuang

State-space models have been used in many applications, including econometrics, engineering, medical research, etc. The maximum likelihood estimation (MLE) of the static parameter of general state-space models is not straightforward because…

Methodology · Statistics 2025-02-04 Yuxiong Gao , Wentao Li , Rong Chen

Continuous-time Markov chains (CTMCs) are popular modeling formalism that constitutes the underlying semantics for real-time probabilistic systems such as queuing networks, stochastic process algebras, and calculi for systems biology. Prism…

Machine Learning · Computer Science 2023-02-20 Giovanni Bacci , Anna Ingólfsdóttir , Kim G. Larsen , Raphaël Reynouard

Click-through rate (CTR) and post-click conversion rate (CVR) predictions are two fundamental modules in industrial ranking systems such as recommender systems, advertising, and search engines. Since CVR involves much fewer samples than CTR…

Information Retrieval · Computer Science 2023-02-17 Xuanji Xiao , Huabin Chen , Yuzhen Liu , Xing Yao , Pei Liu , Chaosheng Fan , Nian Ji , Xirong Jiang

Ranking models are extensively used in e-commerce for relevance estimation. These models often suffer from poor interpretability and no scale calibration, particularly when trained with typical ranking loss functions. This paper addresses…

Information Retrieval · Computer Science 2026-01-14 Piotr Bajger , Roman Dusek , Krzysztof Galias , Paweł Młyniec , Aleksander Wawer , Paweł Zawistowski

Rather than augmenting rewards with penalties for undesired behavior, Constrained Partially Observable Markov Decision Processes (CPOMDPs) plan safely by imposing inviolable hard constraint value budgets. Previous work performing online…

Artificial Intelligence · Computer Science 2022-12-26 Arec Jamgochian , Anthony Corso , Mykel J. Kochenderfer

We employ uncertain parametric CTMCs with parametric transition rates and a prior on the parameter values. The prior encodes uncertainty about the actual transition rates, while the parameters allow dependencies between transition rates.…

Logic in Computer Science · Computer Science 2022-12-08 Thom S. Badings , Nils Jansen , Sebastian Junges , Marielle Stoelinga , Matthias Volk

Click-through rate (CTR) prediction is a crucial task in the context of an online on-demand food delivery (OFD) platform for precisely estimating the probability of a user clicking on food items. Unlike universal e-commerce platforms such…

Information Retrieval · Computer Science 2023-08-17 Guyu Jiang , Xiaoyun Li , Rongrong Jing , Ruoqi Zhao , Xingliang Ni , Guodong Cao , Ning Hu

The two primary tasks in the search recommendation system are search relevance matching and click-through rate (CTR) prediction -- the former focuses on seeking relevant items for user queries whereas the latter forecasts which item may…

Information Retrieval · Computer Science 2025-03-27 Rong Chen , Shuzhi Cao , Ailong He , Shuguang Han , Jufeng Chen

As a popular e-commerce platform, Kuaishou E-shop provides precise personalized product recommendations to tens of millions of users every day. To better respond real-time user feedback, we have deployed an interactive recommender system…

Information Retrieval · Computer Science 2026-01-16 Boyang Xia , Ruilin Bao , Hanjun Jiang , Jun Wang , Wenwu Ou

In many practical parameter estimation problems, prescreening and parameter selection are performed prior to estimation. In this paper, we consider the problem of estimating a preselected unknown deterministic parameter chosen from a…

Information Theory · Computer Science 2016-09-21 Tirza Routtenberg , Lang Tong

In modern recommender systems, especially in e-commerce, predicting multiple targets such as click-through rate (CTR) and post-view conversion rate (CTCVR) is common. Multi-task recommender systems are increasingly popular in both research…

Information Retrieval · Computer Science 2024-08-21 Yue Ding , Yanbiao Ji , Xun Cai , Xin Xin , Yuxiang Lu , Suizhi Huang , Chang Liu , Xiaofeng Gao , Tsuyoshi Murata , Hongtao Lu