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In this paper, we investigate the problem of distributionally robust source coding, i.e., source coding under uncertainty in the source distribution, discussing both the coding and computational aspects of the problem. We propose two…

Information Theory · Computer Science 2025-07-24 Giuseppe Serra , Photios A. Stavrou , Marios Kountouris

The advancement of Large Language Models (LLMs) has led to increasing concerns about the misuse of AI-generated text, and watermarking for LLM-generated text has emerged as a potential solution. However, it is challenging to generate…

Computation and Language · Computer Science 2024-06-11 Yepeng Liu , Yuheng Bu

Large language models (LLMs) often produce content that contradicts or overlooks information provided in the input context, a phenomenon known as faithfulness hallucination. In this paper, we propose Context-Fidelity Boosting (CFB), a…

Computation and Language · Computer Science 2026-04-27 Weixu Zhang , Fanghua Ye , Qiang Gao , Jian Li , Haolun Wu , Yuxing Tian , Sijing Duan , Nan Du , Xiaolong Li , Xue Liu

Large language models (LLMs) have recently shown promise in recommendation by providing rich semantic knowledge. While most existing approaches rely on external textual corpora to align LLMs with recommender systems, we revisit a more…

Information Retrieval · Computer Science 2026-04-21 Wuhan Chen , Min Gao , Xin Xia , Zongwei Wang , Wentao Li , Shane Culpepper

Designing control inputs that satisfy safety requirements is crucial in safety-critical nonlinear control, and this task becomes particularly challenging when full-state measurements are unavailable. In this work, we address the problem of…

Systems and Control · Electrical Eng. & Systems 2024-03-15 Shiqing Wei , Prashanth Krishnamurthy , Farshad Khorrami

Semantic communication is designed to tackle issues like bandwidth constraints and high latency in communication systems. However, in complex network topologies with multiple users, the enormous combinations of client data and channel state…

Image and Video Processing · Electrical Eng. & Systems 2025-03-19 Xingrun Yan , Shiyuan Zuo , Yifeng Lyu , Rongfei Fan , Han Hu

Physical layer approaches for generating secret encryption keys for wireless systems using channel information have attracted increased interest from researchers in recent years. This paper presents a new approach for calculating…

Information Theory · Computer Science 2023-07-11 John A. Snoap

In this paper, we present a novel approach to adapt a sequence-to-sequence Transformer-Transducer ASR system to the keyword spotting (KWS) task. We achieve this by replacing the keyword in the text transcription with a special token <kw>…

Audio and Speech Processing · Electrical Eng. & Systems 2022-11-15 Beltrán Labrador , Guanlong Zhao , Ignacio López Moreno , Angelo Scorza Scarpati , Liam Fowl , Quan Wang

Large language models (LLMs) excel at reasoning but struggle with knowledge-intensive questions due to limited context and parametric knowledge. However, existing methods that rely on finetuned LLMs or GNN retrievers are limited by…

Artificial Intelligence · Computer Science 2025-11-07 Yuanning Cui , Zequn Sun , Wei Hu , Zhangjie Fu

Reasoning language models can solve increasingly complex tasks, but struggle to produce the calibrated confidence estimates necessary for reliable deployment. Existing calibration methods usually depend on labels or repeated sampling at…

Machine Learning · Computer Science 2026-04-22 Thomas Zollo , Jimmy Wang , Richard Zemel

We propose a novel physical layer secret key generation method for the inter-spacecraft communication links. By exploiting the Doppler frequency shifts of the reciprocal spacecraft links as a unique secrecy source, spacecrafts aim to obtain…

Signal Processing · Electrical Eng. & Systems 2020-09-01 Ozan Alp Topal , Gunes Karabulut Kurt , Halim Yanikomeroglu

Container Orchestrator (CO) is a vital technology for managing clusters of containers, which may form a virtualized infrastructure for developing and operating software systems. Like any other software system, securing CO is critical, but…

Cryptography and Security · Computer Science 2021-12-24 Mubin Ul Haque , M. Mehdi Kholoosi , M. Ali Babar

Knowledge-grounded dialogue is a task of generating a fluent and informative response based on both conversation context and a collection of external knowledge, in which knowledge selection plays an important role and attracts more and more…

Computation and Language · Computer Science 2021-09-01 Shilei Liu , Xiaofeng Zhao , Bochao Li , Feiliang Ren

Large Language Model (LLM) based code generation is predominantly formulated as a strictly monotonic process, appending tokens linearly to an immutable prefix. This formulation contrasts to the cognitive process of programming, which is…

Software Engineering · Computer Science 2026-05-07 Chengran Yang , Zichao Wei , Heminghao Deng , Jinfeng Jiang , Zhensu Sun , Ting Zhang , Tianyi Wu , Ming Wen , David Lo

The source distribution in conditional flow matching is a design parameter that can be calibrated to data, not a default isotropic prior. We exploit this in Multi-Fidelity Flow Matching (MFFM), a cascade refinement framework for parametric…

Machine Learning · Computer Science 2026-05-18 Sipeng Chen , Junliang Liu , Hewei Tang , Shibo Li

Adversarial prompts generated using gradient-based methods exhibit outstanding performance in performing automatic jailbreak attacks against safety-aligned LLMs. Nevertheless, due to the discrete nature of texts, the input gradient of LLMs…

Cryptography and Security · Computer Science 2024-11-04 Qizhang Li , Yiwen Guo , Wangmeng Zuo , Hao Chen

In this paper, we propose an intra-set and inter-set recursive fusion framework with time-frequency calibrated knowledge distillation (I$^2$SRF-TFCKD) for SE. Different from previous distillation strategies for SE, the proposed framework…

Sound · Computer Science 2026-05-18 Jiaming Cheng , Ruiyu Liang , Ye Ni , Chao Xu , Jing Li , Wei Zhou , Rui Liu , Björn W. Schuller , Xiaoshuai Hao

LLM systems must make control decisions in addition to generating outputs: whether to answer, clarify, retrieve, call tools, repair, or escalate. In many current architectures, these decisions remain implicit within generation, entangling…

Artificial Intelligence · Computer Science 2026-04-02 Wei Sun

Large language models(LLMs) have shown its outperforming ability on various tasks and question answering. However, LLMs require substantial memory storage on low-resource devices. More critically, the computational speed on these devices is…

Computation and Language · Computer Science 2025-08-18 Yanming Liu , Xinyue Peng , Ningjing Sang , Yafeng Yan , Xiaolan Ke , Zhiting Zheng , Shaobo Liu , Songhang Deng , Jiannan Cao , Le Dai , Xingzu Liu , Ruilin Nong , Weihao Liu

A fundamental issue for federated learning (FL) is how to achieve optimal model performance under highly dynamic communication environments. This issue can be alleviated by the fact that modern edge devices usually can connect to the edge…

Machine Learning · Computer Science 2021-09-21 Haizhou Du , Xiaojie Feng , Qiao Xiang , Haoyu Liu