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In adversarial imitation learning, a discriminator is trained to differentiate agent episodes from expert demonstrations representing the desired behavior. However, as the trained policy learns to be more successful, the negative examples…

Security issues have gathered growing interest within the control systems community, as physical components and communication networks are increasingly vulnerable to cyber attacks. In this context, recent literature has studied increasingly…

Optimization and Control · Mathematics 2023-08-22 Xiaoyu Luo , Chongrong Fang , Jianping He , Chengcheng Zhao , Dario Paccagnan

Recommenders built upon implicit collaborative filtering are typically trained to distinguish between users' positive and negative preferences. When direct observations of the latter are unavailable, negative training data are constructed…

Information Retrieval · Computer Science 2026-01-28 Yueqing Xuan , Kacper Sokol , Mark Sanderson , Jeffrey Chan

Caching popular contents at the edge of the network can positively impact the performance and future sustainability of wireless networks in several ways, e.g., end-to-end access delay reduction and peak rate increase. In this paper, we aim…

Information Theory · Computer Science 2017-03-21 Marco Maso , Italo Atzeni , Imène Ghamnia , Ejder Baştuğ , Mérouane Debbah

This paper focuses on similarity caching systems, in which a user request for an {object~$o$} that is not in the cache can be (partially) satisfied by a similar stored {object~$o'$}, at the cost of a loss of user utility. Similarity caching…

Networking and Internet Architecture · Computer Science 2021-05-28 Michele Garetto , Emilio Leonardi , Giovanni Neglia

Most existing image-text matching methods adopt triplet loss as the optimization objective, and choosing a proper negative sample for the triplet of <anchor, positive, negative> is important for effectively training the model, e.g., hard…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Haoxuan Li , Yi Bin , Junrong Liao , Yang Yang , Heng Tao Shen

In this era of fake news and political polarization, it is desirable to have a system to enable users to access balanced news content. Current solutions focus on top down, server based approaches to decide whether a news article is fake or…

Information Retrieval · Computer Science 2018-03-12 Anish Anil Patankar , Joy Bose , Harshit Khanna

Coded caching utilizes proper file subpacketization and coded delivery to make full use of the multicast opportunities in content delivery, to alleviate file transfer load in massive content delivery scenarios. Most existing work considers…

Information Theory · Computer Science 2021-10-01 Jialing Liao , Olav Tirkkonen

Static analysis tools are frequently used to detect potential vulnerabilities in software systems. However, an inevitable problem of these tools is their large number of warnings with a high false positive rate, which consumes time and…

Software Engineering · Computer Science 2022-09-28 Kien-Tuan Ngo , Dinh-Truong Do , Thu-Trang Nguyen , Hieu Dinh Vo

This work exploits the advantages of two prominent techniques in future communication networks, namely caching and non-orthogonal multiple access (NOMA). Particularly, a system with Rayleigh fading channels and cache-enabled users is…

Information Theory · Computer Science 2019-09-25 Khai Nguyen Doan , Mojtaba Vaezi , Wonjae Shin , H. Vincent Poor , Hyundong Shin , Tony Q. S. Quek

Retargeting ads are increasingly prevalent on the Internet as their effectiveness has been shown to outperform conventional targeted ads. Retargeting ads are not only based on users' interests, but also on their intents, i.e. commercial…

Cryptography and Security · Computer Science 2014-04-18 Minh-Dung Tran , Gergely Acs , Claude Castelluccia

Coded caching schemes on broadcast networks with user caches help to offload traffic from peak times to off-peak times by prefetching information from the server to the users during off-peak times and thus serving the users more efficiently…

Information Theory · Computer Science 2017-08-29 Hari Hara Suthan C , Ishani Chugh , Prasad Krishnan

Caching is a commonly used technique in content-delivery networks which aims to deliver information from hosting servers to users in the most efficient way. In 2014, Maddah-Ali and Niessen formulated caching into a formal information…

Information Theory · Computer Science 2020-02-27 Tai Do Duc , Shuo Shao , Chaoping Xing

Caching has been successfully applied in wired networks, in the context of Content Distribution Networks (CDNs), and is quickly gaining ground for wireless systems. Storing popular content at the edge of the network (e.g. at small cells) is…

Networking and Internet Architecture · Computer Science 2018-05-18 Theodoros Giannakas , Pavlos Sermpezis , Thrasyvoulos Spyropoulos

Recommender systems increasingly suffer from echo chambers and user homogenization, systemic distortions arising from the dynamic interplay between algorithmic recommendations and human behavior. While prior work has studied these phenomena…

Social and Information Networks · Computer Science 2025-08-18 Ming Tang , Xiaowen Huang , Jitao Sang

Similarity caching systems have recently attracted the attention of the scientific community, as they can be profitably used in many application contexts, like multimedia retrieval, advertising, object recognition, recommender systems and…

Networking and Internet Architecture · Computer Science 2021-02-10 Michele Garetto , Emilio Leonardi , Giovanni Neglia

We address challenges of active learning under scarce informational resources in non-stationary environments. In real-world settings, data labeled and integrated into a predictive model may become invalid over time. However, the data can…

Machine Learning · Computer Science 2012-06-26 Ashish Kapoor , Eric J. Horvitz

Notwithstanding the significant research effort Network Function Virtualization (NFV) architectures received over the last few years little attention has been placed on optimizing proactive caching when considering it as a service chain.…

Networking and Internet Architecture · Computer Science 2018-07-30 Gao Zheng , Anthony Tsiopoulos , Vasilis Friderikos

Does everyone equally benefit from computer vision systems? Answers to this question become more and more important as computer vision systems are deployed at large scale, and can spark major concerns when they exhibit vast performance…

Computer Vision and Pattern Recognition · Computer Science 2022-02-16 Priya Goyal , Adriana Romero Soriano , Caner Hazirbas , Levent Sagun , Nicolas Usunier

Edge nodes (ENs) in Internet of Things commonly serve as gateways to cache sensing data while providing accessing services for data consumers. This paper considers multiple ENs that cache sensing data under the coordination of the cloud.…

Information Theory · Computer Science 2020-09-01 Xiongwei Wu , Xiuhua Li , Jun Li , P. C. Ching , Victor C. M. Leung , H. Vincent Poor