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In this paper, we contribute to the theoretical understanding, the design, and the performance evaluation of multi-source multi-relay network-coded cooperative diversity protocols. These protocols are useful to counteract the spectral…

信息论 · 计算机科学 2016-11-17 Marco Di Renzo , Michela Iezzi , Fabio Graziosi

Pseudo-relevance feedback (PRF) can enhance average retrieval effectiveness over a sufficiently large number of queries. However, PRF often introduces a drift into the original information need, thus hurting the retrieval effectiveness of…

信息检索 · 计算机科学 2024-01-23 Suchana Datta , Debasis Ganguly , Sean MacAvaney , Derek Greene

There is a growing need for pluralistic alignment methods that can steer language models towards individual attributes and preferences. One such method, Self-Supervised Alignment with Mutual Information (SAMI), uses conditional mutual…

计算与语言 · 计算机科学 2025-06-06 Soham V. Govande

Phishing detection systems are predominantly rely on statistical machine learning models, which often lack contextual reasoning and are vulnerable to adversarial manipulation. In this work, we propose a hybrid framework that integrates…

人工智能 · 计算机科学 2026-04-29 Mainak Sen , Kumar Sankar Ray , Amlan Chakrabarti

The core of the general recommender systems lies in learning high-quality embedding representations of users and items to investigate their positional relations in the feature space. Unfortunately, data sparsity caused by…

信息检索 · 计算机科学 2025-04-24 Yi Zhang , Yiwen Zhang

We study an incremental redundancy (IR) cooperative coding scheme for wireless networks. To exploit the spatial diversity benefit we propose a cluster-based collaborating strategy for a quasi-static Rayleigh fading channel model and based…

信息论 · 计算机科学 2007-07-13 Ruoheng Liu , Predrag Spasojevic , Emina Soljanin

Retrieval-augmented language models (RALMs) improve performance by accessing long-tail and up-to-date knowledge from external data stores, but are challenging to build. Existing approaches require either expensive retrieval-specific…

Reviewing the previous work of diversity Rein-forcement Learning,diversity is often obtained via an augmented loss function,which requires a balance between reward and diversity.Generally,diversity optimization algorithms use Multi-armed…

机器学习 · 计算机科学 2024-03-19 Jingcheng Jiang , Haiyin Piao , Yu Fu , Yihang Hao , Chuanlu Jiang , Ziqi Wei , Xin Yang

This paper addresses the challenges of throughput optimization in wireless cache-aided cooperative networks. We propose an opportunistic cooperative probing and scheduling strategy for efficient content delivery. The strategy involves the…

信号处理 · 电气工程与系统科学 2024-09-04 Zhou Zhang , Saman Atapattu , Yizhu Wang , Marco Di Renzo

The Reinforcement Learning field is strong on achievements and weak on reapplication; a computer playing GO at a super-human level is still terrible at Tic-Tac-Toe. This paper asks whether the method of training networks improves their…

神经与进化计算 · 计算机科学 2023-03-28 Brad Windsor , Brandon O'Shea , Mengxi Wu

Cooperative transmission is an emerging communication technique that takes advantage of the broadcast nature of wireless channels. However, due to low spectral efficiency and the requirement of orthogonal channels, its potential for use in…

信息论 · 计算机科学 2016-11-17 Zhu Han , Xin Zhang , H. Vincent Poor

Machine learning algorithms minimizing the average training loss usually suffer from poor generalization performance due to the greedy exploitation of correlations among the training data, which are not stable under distributional shifts.…

机器学习 · 计算机科学 2022-07-29 Xi Leng , Xiaoying Tang , Yatao Bian

Ensuring the safety of large language models (LLMs) is paramount, yet identifying potential vulnerabilities is challenging. While manual red teaming is effective, it is time-consuming, costly and lacks scalability. Automated red teaming…

密码学与安全 · 计算机科学 2024-12-24 Bojian Jiang , Yi Jing , Tianhao Shen , Tong Wu , Qing Yang , Deyi Xiong

The retrieval augmented generation (RAG) system such as Retro has been shown to improve language modeling capabilities and reduce toxicity and hallucinations by retrieving from a database of non-parametric memory containing trillions of…

信息检索 · 计算机科学 2025-03-27 Gentiana Rashiti , Geethan Karunaratne , Mrinmaya Sachan , Abu Sebastian , Abbas Rahimi

This paper considers a multiple input multiple output (MIMO) two-way relay channel, where two nodes want to exchange data with each other using multiple relays. An iterative algorithm is proposed to achieve the optimal achievable rate…

信息论 · 计算机科学 2008-10-22 Rahul Vaze , Robert W. Heath

The high dimensionality of hyperspectral images (HSI) that contains more than hundred bands (images) for the same region called Ground Truth Map, often imposes a heavy computational burden for image processing and complicates the learning…

计算机视觉与模式识别 · 计算机科学 2022-10-27 Asma Elmaizi , Elkebir Sarhrouni , Ahmed hammouch , Chafik Nacir

This paper develops a memory-efficient approach for Sequential Pattern Mining (SPM), a fundamental topic in knowledge discovery that faces a well-known memory bottleneck for large data sets. Our methodology involves a novel hybrid trie data…

数据库 · 计算机科学 2024-07-30 Amin Hosseininasab , Willem-Jan van Hoeve , Andre A. Cire

Fine-tuning large language models (LLMs) using diverse datasets is crucial for enhancing their overall performance across various domains. In practical scenarios, existing methods based on modeling the mixture proportions of data…

计算与语言 · 计算机科学 2025-10-31 Zhenqing Ling , Daoyuan Chen , Liuyi Yao , Qianli Shen , Yaliang Li , Ying Shen

We consider the adaptation of random early detection (RED) as a buffer management algorithm for TCP traffic in Internet gateways where different maximum transfer units (MTUs) are used. We studied the two RED variants described in [4] and…

网络与互联网体系结构 · 计算机科学 2016-11-18 Stefaan De Cnodder , Omar Elloumi , Kenny Pauwels

Existing automated red-teaming pipelines often miss attacks that depend on attacker identity, framing, or multi-turn tactics. This under-coverage underestimates real-world risk. We introduce Persona-Conditioned Adversarial Prompting (PCAP),…

密码学与安全 · 计算机科学 2026-05-14 Cristian Morasso , Anisa Halimi , Muhammad Zaid Hameed , Douglas Leith