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In this work we introduce an incremental learning framework for Click-Through-Rate (CTR) prediction and demonstrate its effectiveness for Taboola's massive-scale recommendation service. Our approach enables rapid capture of emerging trends…

Information Retrieval · Computer Science 2022-09-02 Petros Katsileros , Nikiforos Mandilaras , Dimitrios Mallis , Vassilis Pitsikalis , Stavros Theodorakis , Gil Chamiel

In web search and recommendation systems, user clicks are widely used to train ranking models. However, click data is heavily biased, i.e., users tend to click higher-ranked items (position bias), choose only what was shown to them…

Artificial Intelligence · Computer Science 2026-01-12 Haoming Gong , Qingyao Ai , Zhihao Tao , Yongfeng Zhang

Generative query suggestion using large language models offers a powerful way to enhance conversational systems, but aligning outputs with nuanced user preferences remains a critical challenge. To address this, we introduce a multi-stage…

Computation and Language · Computer Science 2025-12-16 Junhao Yin , Haolin Wang , Peng Bao , Ju Xu , Yongliang Wang

Conversational Recommender Systems (CRS) provide personalized services through multi-turn interactions, yet most existing methods overlook users' heterogeneous decision-making styles and knowledge levels, which constrains both accuracy and…

Information Retrieval · Computer Science 2025-09-10 Yaying Luo , Hui Fang , Zhu Sun

Traditional e-commerce search systems often struggle with the semantic gap between user queries and product catalogs. In this paper, we propose a Category-Aligned Retrieval System (CARS) that improves search relevance by first predicting…

Information Retrieval · Computer Science 2025-10-28 Rauf Aliev

User simulation is increasingly vital to develop and evaluate recommender systems (RSs). While Large Language Models (LLMs) offer promising avenues to simulate user behavior, they often struggle with the absence of specific task alignment…

Human-Computer Interaction · Computer Science 2026-04-20 Tianjun Wei , Huizhong Guo , Yingpeng Du , Zhu Sun , Huang Chen , Dongxia Wang , Jie Zhang

Click-through rate (CTR) prediction is a critical task in online advertising systems. A large body of research considers each ad independently, but ignores its relationship to other ads that may impact the CTR. In this paper, we investigate…

Machine Learning · Computer Science 2019-07-22 Wentao Ouyang , Xiuwu Zhang , Li Li , Heng Zou , Xin Xing , Zhaojie Liu , Yanlong Du

Predicting the probability that a user will click on a specific advertisement has been a prevalent issue in online advertising, attracting much research attention in the past decades. As a hot research frontier driven by industrial needs,…

Information Retrieval · Computer Science 2022-02-23 Yanwu Yang , Panyu Zhai

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

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, which aims to estimate the probability of a user clicking on an item, is a key task in online advertising. Numerous existing CTR models concentrate on modeling the feature interactions within a solitary…

Information Retrieval · Computer Science 2023-11-28 Zhen Tian , Changwang Zhang , Wayne Xin Zhao , Xin Zhao , Ji-Rong Wen , Zhao Cao

In modern social media, recommender systems (RecSys) rely on the click-through rate (CTR) as the standard metric to evaluate user engagement. CTR prediction is traditionally framed as a binary classification task to predict whether a user…

Machine Learning · Computer Science 2025-03-20 Zhongyu Ouyang , Chunhui Zhang , Yaning Jia , Soroush Vosoughi

Conversational recommender systems (CRS) aim to employ natural language conversations to suggest suitable products to users. Understanding user preferences for prospective items and learning efficient item representations are crucial for…

Information Retrieval · Computer Science 2022-12-16 Dongding Lin , Jian Wang , Wenjie Li

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

Recent advancements in large language models (LLMs) integrated with external tools and APIs have successfully addressed complex tasks by using in-context learning or fine-tuning. Despite this progress, the vast scale of tool retrieval…

Information Retrieval · Computer Science 2024-10-07 Yuxiang Zhang , Xin Fan , Junjie Wang , Chongxian Chen , Fan Mo , Tetsuya Sakai , Hayato Yamana

Click-through rate (CTR) prediction is of great importance in recommendation systems and online advertising platforms. When served in industrial scenarios, the user-generated data observed by the CTR model typically arrives as a stream.…

Information Retrieval · Computer Science 2023-04-19 Congcong Liu , Fei Teng , Xiwei Zhao , Zhangang Lin , Jinghe Hu , Jingping Shao

Conversational Recommender System (CRS), which aims to recommend high-quality items to users through interactive conversations, has gained great research interest recently. A CRS is usually composed of a recommendation module and a…

Computation and Language · Computer Science 2022-10-10 Lingzhi Wang , Huang Hu , Lei Sha , Can Xu , Kam-Fai Wong , Daxin Jiang

Acquiring valuable data from the rapidly expanding information on the internet has become a significant concern, and recommender systems have emerged as a widely used and effective tool for helping users discover items of interest. The…

Information Retrieval · Computer Science 2025-02-25 Jinfeng Xu , Zheyu Chen , Shuo Yang , Jinze Li , Wei Wang , Xiping Hu , Steven Hoi , Edith Ngai

Recommender systems are embracing conversational technologies to obtain user preferences dynamically, and to overcome inherent limitations of their static models. A successful Conversational Recommender System (CRS) requires proper handling…

Information Retrieval · Computer Science 2020-02-24 Wenqiang Lei , Xiangnan He , Yisong Miao , Qingyun Wu , Richang Hong , Min-Yen Kan , Tat-Seng Chua

The click-through rate (CTR) reflects the ratio of clicks on a specific item to its total number of views. It has significant impact on websites' advertising revenue. Learning sophisticated models to understand and predict user behavior is…

Machine Learning · Computer Science 2020-07-29 Amit Livne , Roy Dor , Eyal Mazuz , Tamar Didi , Bracha Shapira , Lior Rokach