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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

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

In search systems, effectively coordinating the two core objectives of search relevance matching and click-through rate (CTR) prediction is crucial for discovering users' interests and enhancing platform revenue. In our prior work PRECTR,…

Information Retrieval · Computer Science 2026-02-25 Shuzhi Cao , Rong Chen , Ailong He , Shuguang Han , Jufeng Chen

Sequential recommendation methods are increasingly important in cutting-edge recommender systems. Through leveraging historical records, the systems can capture user interests and perform recommendations accordingly. State-of-the-art…

Information Retrieval · Computer Science 2023-08-10 Chong Liu , Xiaoyang Liu , Rongqin Zheng , Lixin Zhang , Xiaobo Liang , Juntao Li , Lijun Wu , Min Zhang , Leyu Lin

The motivations of users to make interactions can be divided into static preference and dynamic interest. To accurately model user representations over time, recent studies in sequential recommendation utilize information propagation and…

Information Retrieval · Computer Science 2023-09-19 Qingtian Bian , Jiaxing Xu , Hui Fang , Yiping Ke

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

Natural content and advertisement coexist in industrial recommendation systems but differ in data distribution. Concretely, traffic related to the advertisement is considerably sparser compared to that of natural content, which motivates…

Information Retrieval · Computer Science 2024-08-30 Qi Liu , Xingyuan Tang , Jianqiang Huang , Xiangqian Yu , Haoran Jin , Jin Chen , Yuanhao Pu , Defu Lian , Tan Qu , Zhe Wang , Jia Cheng , Jun Lei

With the rapid growth of user historical behavior data, user interest modeling has become a prominent aspect in Click-Through Rate (CTR) prediction, focusing on learning user intent representations. However, this complexity poses…

Information Retrieval · Computer Science 2025-05-09 Xin Song , Xiaochen Li , Jinxin Hu , Hong Wen , Zulong Chen , Yu Zhang , Xiaoyi Zeng , Jing Zhang

Large language models can exhibit emergent reasoning behaviors, often manifested as recurring lexical patterns (e.g., "wait," indicating verification). However, complex reasoning trajectories remain sparse in unconstrained sampling, and…

Artificial Intelligence · Computer Science 2026-03-03 Po-Nien Kung , Zhen Yang , Jeffrey Luo , Cheng-Fu Yang , Haikang Deng , Zi-Yi Dou , Yinfei Yang , Nanyun Peng , Zhe Gan , Kai-Wei Chang

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

Click-Through Rate (CTR) prediction, whose aim is to predict the probability of whether a user will click on an item, is an essential task for many online applications. Due to the nature of data sparsity and high dimensionality of CTR…

Information Retrieval · Computer Science 2021-08-18 Yichen Xu , Yanqiao Zhu , Feng Yu , Qiang Liu , Shu Wu

Recent research has explored using Large Language Models for recommendation tasks by transforming user interaction histories and item metadata into text prompts, then having the LLM produce rankings or recommendations. A promising approach…

Information Retrieval · Computer Science 2025-10-03 Bo Ma , LuYao Liu , Simon Lau , Chandler Yuan , and XueY Cui , Rosie Zhang

Item representation learning (IRL) plays an essential role in recommender systems, especially for sequential recommendation. Traditional sequential recommendation models usually utilize ID embeddings to represent items, which are not shared…

Information Retrieval · Computer Science 2023-12-22 Shenghao Yang , Chenyang Wang , Yankai Liu , Kangping Xu , Weizhi Ma , Yiqun Liu , Min Zhang , Haitao Zeng , Junlan Feng , Chao Deng

Traditional recommender systems primarily leverage identity-based (ID) representations for users and items, while the advent of pre-trained language models (PLMs) has introduced rich semantic modeling of item descriptions. However, PLMs…

Information Retrieval · Computer Science 2024-02-15 Chen Wang , Liangwei Yang , Zhiwei Liu , Xiaolong Liu , Mingdai Yang , Yueqing Liang , Philip S. Yu

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

Click-through rate (CTR) prediction plays a pivotal role in online advertising and recommender systems. Despite notable progress in modeling user preferences from historical behaviors, two key challenges persist. First, exsiting…

Information Retrieval · Computer Science 2026-01-27 Kesha Ou , Zhen Tian , Wayne Xin Zhao , Hongyu Lu , Ji-Rong Wen

Click-Through Rate (CTR) prediction is a core task in nowadays commercial recommender systems. Feature crossing, as the mainline of research on CTR prediction, has shown a promising way to enhance predictive performance. Even though various…

Information Retrieval · Computer Science 2021-04-23 Runlong Yu , Yuyang Ye , Qi Liu , Zihan Wang , Chunfeng Yang , Yucheng Hu , Enhong Chen

Click-through rates prediction is critical in modern advertising systems, where ranking relevance and user engagement directly impact platform efficiency and business value. In this project, we explore how to model CTR more effectively…

Machine Learning · Computer Science 2025-12-01 Hongyu Yang , Chunxi Wen , Jiyin Zhang , Nanfei Shen , Shijiao Zhang , Xiyan Han

Test-time alignment methods offer a promising alternative to fine-tuning by steering the outputs of large language models (LLMs) at inference time with lightweight interventions on their internal representations. Recently, a prominent and…

Computation and Language · Computer Science 2026-04-28 Imranul Ashrafi , Inigo Jauregi Unanue , Massimo Piccardi

Large Language Models (LLMs) have been widely applied across multiple domains for their broad knowledge and strong reasoning capabilities. However, applying them to recommendation systems is challenging since it is hard for LLMs to extract…

Information Retrieval · Computer Science 2026-02-05 Yinan Zhang , Zhixi Chen , Jiazheng Jing , Zhiqi Shen