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Click-through rate (CTR) prediction is a vital task in industrial recommendation systems. Most existing methods focus on the network architecture design of the CTR model for better accuracy and suffer from the data sparsity problem.…

Information Retrieval · Computer Science 2023-12-19 Qi Liu , Xuyang Hou , Defu Lian , Zhe Wang , Haoran Jin , Jia Cheng , Jun Lei

Click-Through Rate (CTR) prediction plays a core role in recommender systems, serving as the final-stage filter to rank items for a user. The key to addressing the CTR task is learning feature interactions that are useful for prediction,…

Information Retrieval · Computer Science 2023-04-27 Yang Zhang , Tianhao Shi , Fuli Feng , Wenjie Wang , Dingxian Wang , Xiangnan He , Yongdong Zhang

Unlike traditional recommendation tasks, finite user time budgets introduce a critical resource constraint, requiring the recommender system to balance item relevance and evaluation cost. For example, in a mobile shopping interface, users…

Machine Learning · Computer Science 2026-04-15 Sayak Chakrabarty , Souradip Pal

Recommender System (RS) is an important online application that affects billions of users every day. The mainstream RS ranking framework is composed of two parts: a Multi-Task Learning model (MTL) that predicts various user feedback, i.e.,…

Information Retrieval · Computer Science 2022-08-11 Qihua Zhang , Junning Liu , Yuzhuo Dai , Yiyan Qi , Yifan Yuan , Kunlun Zheng , Fan Huang , Xianfeng Tan

Model evolution and constant availability of data are two common phenomena in large-scale real-world machine learning applications, e.g. ads and recommendation systems. To adapt, the real-world system typically retrain with all available…

Information Retrieval · Computer Science 2023-07-06 Jian Zhu , Congcong Liu , Pei Wang , Xiwei Zhao , Zhangang Lin , Jingping Shao

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

Continuous-time reinforcement learning (CTRL) provides a natural framework for sequential decision-making in dynamic environments where interactions evolve continuously over time. While CTRL has shown growing empirical success, its ability…

Machine Learning · Computer Science 2025-12-04 Runze Zhao , Yue Yu , Ruhan Wang , Chunfeng Huang , Dongruo Zhou

In recommendation systems, predicting Click-Through Rate (CTR) is crucial for accurately matching users with items. To improve recommendation performance for cold-start and long-tail items, recent studies focus on leveraging item multimodal…

Information Retrieval · Computer Science 2025-08-05 Yining Yao , Ziwei Li , Shuwen Xiao , Boya Du , Jialin Zhu , Junjun Zheng , Xiangheng Kong , Yuning Jiang

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

Learning the optimal ordering of content is an important challenge in website design. The learning to rank (LTR) framework models this problem as a sequential problem of selecting lists of content and observing where users decide to click.…

Machine Learning · Computer Science 2023-05-12 James A. Grant , David S. Leslie

Click-through rate (CTR) prediction, which predicts the probability of a user clicking an ad, is a fundamental task in recommender systems. The emergence of heterogeneous information, such as user profile and behavior sequences, depicts…

Click-through rate (CTR) prediction, whose goal is to predict the probability of the user to click on an item, has become increasingly significant in the recommender systems. Recently, some deep learning models with the ability to…

Information Retrieval · Computer Science 2022-06-30 Tianwei Cao , Qianqian Xu , Zhiyong Yang , Qingming Huang

Recommender systems play a crucial role in our daily lives. Feed streaming mechanism has been widely used in the recommender system, especially on the mobile Apps. The feed streaming setting provides users the interactive manner of…

Information Retrieval · Computer Science 2019-07-12 Lixin Zou , Long Xia , Zhuoye Ding , Jiaxing Song , Weidong Liu , Dawei Yin

Recent studies on Click-Through Rate (CTR) prediction has reached new levels by modeling longer user behavior sequences. Among others, the two-stage methods stand out as the state-of-the-art (SOTA) solution for industrial applications. The…

Information Retrieval · Computer Science 2022-09-27 Qiwei Chen , Yue Xu , Changhua Pei , Shanshan Lv , Tao Zhuang , Junfeng Ge

Click through rate (CTR) prediction is very important for Native advertisement but also hard as there is no direct query intent. In this paper we propose a large-scale event embedding scheme to encode the each user browsing event by…

Machine Learning · Computer Science 2023-10-18 Mehul Parsana , Krishna Poola , Yajun Wang , Zhiguang Wang

Collaborative Topic Regression (CTR) combines ideas of probabilistic matrix factorization (PMF) and topic modeling (e.g., LDA) for recommender systems, which has gained increasing successes in many applications. Despite enjoying many…

Machine Learning · Computer Science 2016-05-31 Chenghao Liu , Tao Jin , Steven C. H. Hoi , Peilin Zhao , Jianling Sun

Advertising click-through rate (CTR) prediction aims to forecast the probability that a user will click on an advertisement in a given context, thus providing enterprises with decision support for product ranking and ad placement. However,…

Machine Learning · Computer Science 2024-11-26 Xiaowei Xi , Song Leng , Yuqing Gong , Dalin Li

The click-through rate (CTR) prediction task is to predict whether a user will click on the recommended item. As mind-boggling amounts of data are produced online daily, accelerating CTR prediction model training is critical to ensuring an…

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

Click-through rate (CTR) prediction is a core task in recommender systems. Existing methods (IDRec for short) rely on unique identities to represent distinct users and items that have prevailed for decades. On one hand, IDRec often faces…

Information Retrieval · Computer Science 2024-03-18 Yuanbo Gao , Peng Lin , Dongyue Wang , Feng Mei , Xiwei Zhao , Sulong Xu , Jinghe Hu