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Dividing ads ranking system into retrieval, early, and final stages is a common practice in large scale ads recommendation to balance the efficiency and accuracy. The early stage ranking often uses efficient models to generate candidates…

Information Retrieval · Computer Science 2023-07-24 Xuewei Wang , Qiang Jin , Shengyu Huang , Min Zhang , Xi Liu , Zhengli Zhao , Yukun Chen , Zhengyu Zhang , Jiyan Yang , Ellie Wen , Sagar Chordia , Wenlin Chen , Qin Huang

Online advertising systems typically use a cascaded architecture to manage massive requests and candidate volumes, where the ranking stages allocate traffic based on eCPM (predicted CTR $\times$ Bid). With the increasing popularity of…

Machine Learning · Computer Science 2025-08-08 Bin Liu , Yunfei Liu , Ziru Xu , Zhaoyu Zhou , Zhi Kou , Yeqiu Yang , Han Zhu , Jian Xu , Bo Zheng

Automated content analysis increasingly supports communication research, yet scaling manual coding into computational pipelines raises concerns about measurement reliability and validity. We introduce a Hierarchical Error Correction (HEC)…

Computation and Language · Computer Science 2025-10-27 Zhilong Zhao , Yindi Liu

Time series forecasting plays a critical role in various real-world applications, including energy consumption prediction, disease transmission monitoring, and weather forecasting. Although substantial progress has been made in time series…

Machine Learning · Computer Science 2024-11-26 Wei Yuan , Guanhua Ye , Xiangyu Zhao , Quoc Viet Hung Nguyen , Yang Cao , Hongzhi Yin

The organization of latent token representations plays a crucial role in determining the stability, generalization, and contextual consistency of language models, yet conventional approaches to embedding refinement often rely on parameter…

Computation and Language · Computer Science 2025-03-26 Meiquan Dong , Haoran Liu , Yan Huang , Zixuan Feng , Jianhong Tang , Ruoxi Wang

Time series forecasting has widespread applications in urban life ranging from air quality monitoring to traffic analysis. However, accurate time series forecasting is challenging because real-world time series suffer from the distribution…

Machine Learning · Computer Science 2022-07-15 Wenying Duan , Xiaoxi He , Lu Zhou , Lothar Thiele , Hong Rao

Balancing passenger demand and vehicle availability is crucial for ensuring the sustainability and effectiveness of urban transportation systems. To address this challenge, we propose a novel hierarchical strategy for the efficient…

Systems and Control · Electrical Eng. & Systems 2024-06-17 Pengbo Zhu , Giancarlo Ferrari-Trecate , Nikolas Geroliminis

Spatiotemporal forecasting has emerged as an indispensable building block of diverse smart city applications, such as intelligent transportation and smart energy management. Recent advancements have uncovered that the performance of…

Machine Learning · Computer Science 2024-09-30 Shuowei Cai , Hao Liu

Advertisers usually enjoy the flexibility to choose criteria like target audience, geographic area and bid price when planning an campaign for online display advertising, while they lack forecast information on campaign performance to…

Machine Learning · Computer Science 2022-02-25 Jun Chen , Cheng Chen , Huayue Zhang , Qing Tan

The watch time is a significant indicator of user satisfaction in video recommender systems. However, the prediction of watch time as a target variable is often hindered by its highly imbalanced distribution with a scarcity of observations…

Information Retrieval · Computer Science 2024-01-17 Jie Sun , Zhaoying Ding , Xiaoshuang Chen , Qi Chen , Yincheng Wang , Kaiqiao Zhan , Ben Wang

Neural forecasting has shown significant improvements in the accuracy of large-scale systems, yet predicting extremely long horizons remains a challenging task. Two common problems are the volatility of the predictions and their…

Machine Learning · Computer Science 2021-06-11 Cristian Challu , Kin G. Olivares , Gus Welter , Artur Dubrawski

Solving different types of optimization models (including parameters fitting) for support vector machines on large-scale training data is often an expensive computational task. This paper proposes a multilevel algorithmic framework that…

Machine Learning · Statistics 2014-10-14 Talayeh Razzaghi , Ilya Safro

We introduce HTAD, a novel model for diagnosis prediction using Electronic Health Records (EHR) represented as Heterogeneous Information Networks. Recent studies on modeling EHR have shown success in automatically learning representations…

Machine Learning · Computer Science 2019-12-24 Anahita Hosseini , Tyler Davis , Majid Sarrafzadeh

Parallel batch processing machines have extensive applications in the semiconductor manufacturing process. However, the problem models in previous studies regard parallel batch processing as a fixed processing stage in the machining…

Neural and Evolutionary Computing · Computer Science 2024-09-30 Feige Liu , Xin Li , Chao Lu , Wenying Gong

Multivariate time series forecasting often struggles to capture long-range dependencies due to fixed lookback windows. Retrieval-augmented forecasting addresses this by retrieving historical segments from memory, but existing approaches…

Machine Learning · Computer Science 2026-04-08 Junhyeok Kang , Jun Seo , Soyeon Park , Sangjun Han , Seohui Bae , Hyeokjun Choe , Soonyoung Lee

Sponsored search in e-commerce poses several unique and complex challenges. These challenges stem from factors such as the asymmetric language structure between search queries and product names, the inherent ambiguity in user search intent,…

Information Retrieval · Computer Science 2025-02-14 Zhaodong Wang , Weizhi Du , Md Omar Faruk Rokon , Pooshpendu Adhikary , Yanbing Xue , Jiaxuan Xu , Jianghong Zhou , Kuang-chih Lee , Musen Wen

Design of recommender systems aimed at achieving high prediction accuracy is a widely researched area. However, several studies have suggested the need for diversified recommendations, with acceptable level of accuracy, to avoid monotony…

Information Retrieval · Computer Science 2020-01-14 Anupriya Gogna , Angshul Majumdar

Diffusion probabilistic models have set a new standard for generative fidelity but are hindered by a slow iterative sampling process. A powerful training-free strategy to accelerate this process is Schedule Optimization, which aims to find…

Machine Learning · Computer Science 2026-05-20 Aihua Zhu , Rui Su , Qinglin Zhao , Li Feng , Meng Shen , Shibo He

While session-based recommender systems (SBRSs) have shown superior recommendation performance, multi-task learning (MTL) has been adopted by SBRSs to enhance their prediction accuracy and generalizability further. Hierarchical MTL (H-MTL)…

Information Retrieval · Computer Science 2023-09-14 Sejoon Oh , Walid Shalaby , Amir Afsharinejad , Xiquan Cui

Periodic dynamical systems ubiquitously exist in science and engineering. The harmonic balance (HB) method and its variants have been the most widely-used approaches for such systems, but are either confined to low-order approximations or…

Numerical Analysis · Mathematics 2022-03-15 Honghua Dai , Zipu Yan , Xuechuan Wang , Xiaokui Yue , Satya N. Atluri