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Cross-domain Recommendation (CDR) as one of the effective techniques in alleviating the data sparsity issues has been widely studied in recent years. However, previous works may cause domain privacy leakage since they necessitate the…

信息检索 · 计算机科学 2024-05-13 Lei Guo , Ziang Lu , Junliang Yu , Nguyen Quoc Viet Hung , Hongzhi Yin

Cross-Modal sponsored search displays multi-modal advertisements (ads) when consumers look for desired products by natural language queries in search engines. Since multi-modal ads bring complementary details for query-ads matching, the…

计算机视觉与模式识别 · 计算机科学 2023-09-29 Yuanmin Tang , Jing Yu , Keke Gai , Yujing Wang , Yue Hu , Gang Xiong , Qi Wu

Accurately retrieving relevant bid keywords for user queries is critical in Sponsored Search but remains challenging, particularly for short, ambiguous queries. Existing dense and generative retrieval models often fail to capture nuanced…

信息检索 · 计算机科学 2024-10-21 Akash Kumar Mohankumar , Gururaj K , Gagan Madan , Amit Singh

Partial evaluation has recently been used for processing SPARQL queries over a large resource description framework (RDF) graph in a distributed environment. However, the previous approach is inefficient when dealing with complex queries.…

分布式、并行与集群计算 · 计算机科学 2019-02-18 Peng Peng , Lei Zou , Runyu Guan

Pseudo-relevance feedback (PRF) is commonly used to boost the performance of traditional information retrieval (IR) models by using top-ranked documents to identify and weight new query terms, thereby reducing the effect of query-document…

信息检索 · 计算机科学 2018-11-01 Canjia Li , Yingfei Sun , Ben He , Le Wang , Kai Hui , Andrew Yates , Le Sun , Jungang Xu

Use of Deep Learning (DL) in commercial applications such as image classification, sentiment analysis and speech recognition is increasing. When training DL models with large number of parameters and/or large datasets, cost and speed of…

分布式、并行与集群计算 · 计算机科学 2021-05-28 Medha Atre , Birendra Jha , Ashwini Rao

Embedding based retrieval (EBR) is a fundamental building block in many web applications. However, EBR in sponsored search is distinguished from other generic scenarios and technically challenging due to the need of serving multiple…

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…

信息检索 · 计算机科学 2024-03-18 Yuanbo Gao , Peng Lin , Dongyue Wang , Feng Mei , Xiwei Zhao , Sulong Xu , Jinghe Hu

Modern large-scale recommender systems employ multi-stage ranking funnel (Retrieval, Pre-ranking, Ranking) to balance engagement and computational constraints (latency, CPU). However, the initial retrieval stage, often relying on efficient…

信息检索 · 计算机科学 2025-06-10 Amit Jaspal , Qian Dang , Ajantha Ramineni

Federated learning (FL) is an emerging machine learning paradigm that allows to accomplish model training without aggregating data at a central server. Most studies on FL consider a centralized framework, in which a single server is endowed…

机器学习 · 计算机科学 2023-03-22 Bin Wang , Jun Fang , Hongbin Li , Xiaojun Yuan , Qing Ling

Industrial recommendation systems are typically composed of multiple stages, including retrieval, ranking, and blending. The retrieval stage plays a critical role in generating a high-recall set of candidate items that covers a wide range…

信息检索 · 计算机科学 2025-07-01 Zhibo Fan , Hongtao Lin , Haoyu Chen , Bowen Deng , Hedi Xia , Yuke Yan , James Li

Distributed model fitting refers to the process of fitting a mathematical or statistical model to the data using distributed computing resources, such that computing tasks are divided among multiple interconnected computers or nodes, often…

统计计算 · 统计学 2024-06-04 Xiaofei Wu , Rongmei Liang , Fabio Roli , Marcello Pelillo , Jing Yuan

The increasingly stringent regulations on privacy protection have sparked interest in federated learning. As a distributed machine learning framework, it bridges isolated data islands by training a global model over devices while keeping…

信息检索 · 计算机科学 2022-05-27 Zhitao Zhu , Shijing Si , Jianzong Wang , Jing Xiao

Reranking improves recommendation quality by modeling item interactions. However, existing methods often decouple ranking and reranking, leading to weak listwise evaluation models that suffer from combinatorial sparsity and limited…

信息检索 · 计算机科学 2025-11-27 Guoxiao Zhang , Tan Qu , Ao Li , DongLin Ni , Qianlong Xie , Xingxing Wang

Combinatorial optimizations are usually complex and inefficient, which limits their applications in large-scale networks with billions of links. We introduce a distributed computational method for solving a node-covering problem at the…

社会与信息网络 · 计算机科学 2022-11-17 Qiang Liu

Online advertising relies on trackers and data brokers to show targeted ads to users. To improve targeting, different entities in the intricately interwoven online advertising and tracking ecosystems are incentivized to share information…

计算机与社会 · 计算机科学 2019-09-24 John Cook , Rishab Nithyanand , Zubair Shafiq

Displaying banner advertisements (in short, ads) on webpages has usually been discussed as an Internet economics topic where a publisher uses auction models to sell an online user's page view to advertisers and the one with the highest bid…

计算机科学与博弈论 · 计算机科学 2017-08-02 Xiang Chen , Bowei Chen , Mohan Kankanhalli

Multiple federated learning (FL) methods are proposed for traffic flow forecasting (TFF) to avoid heavy-transmission and privacy-leaking concerns resulting from the disclosure of raw data in centralized methods. However, these FL methods…

机器学习 · 计算机科学 2024-11-22 Qingxiang Liu , Sheng Sun , Yuxuan Liang , Xiaolong Xu , Min Liu , Muhammad Bilal , Yuwei Wang , Xujing Li , Yu Zheng

Position bias, the phenomenon whereby users tend to focus on higher-ranked items of the search result list regardless of the actual relevance to queries, is prevailing in many ranking systems. Position bias in training data biases the…

信息检索 · 计算机科学 2023-08-01 Yibo Wang , Yanbing Xue , Bo Liu , Musen Wen , Wenting Zhao , Stephen Guo , Philip S. Yu

One of the challenges in display advertising is that the distribution of features and click through rate (CTR) can exhibit large shifts over time due to seasonality, changes to ad campaigns and other factors. The predominant strategy to…