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Post-click conversion rate (CVR) prediction is an essential task for discovering user interests and increasing platform revenues in a range of industrial applications. One of the most challenging problems of this task is the existence of…

Machine Learning · Computer Science 2022-11-15 Quanyu Dai , Haoxuan Li , Peng Wu , Zhenhua Dong , Xiao-Hua Zhou , Rui Zhang , Rui zhang , Jie Sun

E-commerce search optimization has evolved to include a wider range of metrics that reflect user engagement and business objectives. Modern search frameworks now incorporate advanced quality features, such as sales counts and document-query…

Information Retrieval · Computer Science 2025-09-03 Jungbae Park , Heonseok Jang

The conversion rate (CVR) is a crucial metric for evaluating the effectiveness of platforms, as it quantifies the alignment of content with audience preferences. However, the limited nature of customers' conversion actions presents a…

Information Retrieval · Computer Science 2026-05-08 Guohao Cai , Jun Yuan , Zhenhua Dong

In the e-commerce advertising scenario, estimating the true probabilities (known as a calibrated estimate) on Click-Through Rate (CTR) and Conversion Rate (CVR) is critical. Previous research has introduced numerous solutions for addressing…

Machine Learning · Computer Science 2024-05-22 Shuai Yang , Hao Yang , Zhuang Zou , Linhe Xu , Shuo Yuan , Yifan Zeng

Recently, models for user representation learning have been widely applied in click-through-rate (CTR) and conversion-rate (CVR) prediction. Usually, the model learns a universal user representation as the input for subsequent…

Machine Learning · Computer Science 2024-09-24 Xiaoyu Tan , Yongxin Deng , Chao Qu , Siqiao Xue , Xiaoming Shi , James Zhang , Xihe Qiu

Click-through rate (CTR) prediction plays a key role in modern online personalization services. In practice, it is necessary to capture user's drifting interests by modeling sequential user behaviors to build an accurate CTR prediction…

Information Retrieval · Computer Science 2020-05-29 Jiarui Qin , Weinan Zhang , Xin Wu , Jiarui Jin , Yuchen Fang , Yong Yu

In recommendation scenarios, there are two long-standing challenges, i.e., selection bias and data sparsity, which lead to a significant drop in prediction accuracy for both Click-Through Rate (CTR) and post-click Conversion Rate (CVR)…

Information Retrieval · Computer Science 2023-02-14 Feng Zhu , Mingjie Zhong , Xinxing Yang , Longfei Li , Lu Yu , Tiehua Zhang , Jun Zhou , Chaochao Chen , Fei Wu , Guanfeng Liu , Yan Wang

Conversion rate (CVR) prediction is one of the core components in online recommender systems, and various approaches have been proposed to obtain accurate and well-calibrated CVR estimation. However, we observe that a well-trained CVR…

Information Retrieval · Computer Science 2023-06-28 Zhangming Chan , Yu Zhang , Shuguang Han , Yong Bai , Xiang-Rong Sheng , Siyuan Lou , Jiacen Hu , Baolin Liu , Yuning Jiang , Jian Xu , Bo Zheng

Accurate prediction of crop states (e.g., phenology stages and cold hardiness) is essential for timely farm management decisions such as irrigation, fertilization, and canopy management to optimize crop yield and quality. While traditional…

Artificial Intelligence · Computer Science 2026-05-20 William Solow , Paola Pesantez-Cabrera , Markus Keller , Lav Khot , Sandhya Saisubramanian , Alan Fern

Conversion rate (CVR) prediction is a core component of online advertising systems, where the attribution mechanisms-rules for allocating conversion credit across user touchpoints-fundamentally determine label generation and model…

Machine Learning · Computer Science 2025-08-22 Sishuo Chen , Zhangming Chan , Xiang-Rong Sheng , Lei Zhang , Sheng Chen , Chenghuan Hou , Han Zhu , Jian Xu , Bo Zheng

Hierarchical support vector regression (HSVR) models a function from data as a linear combination of SVR models at a range of scales, starting at a coarse scale and moving to finer scales as the hierarchy continues. In the original…

Machine Learning · Computer Science 2021-02-03 Ryan Mohr , Maria Fonoberova , Zlatko Drmač , Iva Manojlović , Igor Mezić

Long-term Human-Robot Collaboration (HRC) is crucial for enabling flexible manufacturing systems and integrating companion robots into daily human environments over extended periods. This paper identifies several key challenges for such…

Robotics · Computer Science 2025-02-05 Peiqi Yu , Abulikemu Abuduweili , Ruixuan Liu , Changliu Liu

As the recommendation service needs to address increasingly diverse distributions, such as multi-population, multi-scenario, multitarget, and multi-interest, more and more recent works have focused on multi-distribution modeling and…

Machine Learning · Computer Science 2024-08-05 Xingyu Lou , Yu Yang , Kuiyao Dong , Heyuan Huang , Wenyi Yu , Ping Wang , Xiu Li , Jun Wang

Hierarchical forecasting (HF) is needed in many situations in the supply chain (SC) because managers often need different levels of forecasts at different levels of SC to make a decision. Top-Down (TD), Bottom-Up (BU) and Optimal…

Machine Learning · Computer Science 2019-12-03 Mahdi Abolghasemi , Rob J Hyndman , Garth Tarr , Christoph Bergmeir

Social networks have become essential for people's lives. The proliferation of web services further expands social networks at an unprecedented scale, leading to immeasurable commercial value for online platforms. Recently, the group buying…

Information Retrieval · Computer Science 2023-11-22 Xiaolong Liu , Liangwei Yang , Chen Wang , Mingdai Yang , Zhiwei Liu , Philip S. Yu

Human activities are particularly complex and variable, and this makes challenging for deep learning models to reason about them. However, we note that such variability does have an underlying structure, composed of a hierarchy of patterns…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Simone Alberto Peirone , Francesca Pistilli , Giuseppe Averta

The simulation-to-real gap problem and the high computational burden of whole-body Model Predictive Control (whole-body MPC) continue to present challenges in generating a wide variety of movements using whole-body MPC for real humanoid…

Robotics · Computer Science 2024-09-16 Koji Ishihara , Hiroaki Gomi , Jun Morimoto

Multi-behavior recommendation systems enhance effectiveness by leveraging auxiliary behaviors (such as page views and favorites) to address the limitations of traditional models that depend solely on sparse target behaviors like purchases.…

Information Retrieval · Computer Science 2024-08-23 Haojie Li , Zhiyong Cheng , Xu Yu , Jinhuan Liu , Guanfeng Liu , Junwei Du

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

Recommender systems have been demonstrated to be effective to meet user's personalized interests for many online services (e.g., E-commerce and online advertising platforms). Recent years have witnessed the emerging success of many deep…

Information Retrieval · Computer Science 2023-02-20 Lianghao Xia , Chao Huang , Yong Xu , Peng Dai , Liefeng Bo