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As foundation models continue to scale, the size of trained models grows exponentially, presenting significant challenges for their evaluation. Current evaluation practices involve curating increasingly large datasets to assess the…

机器学习 · 统计学 2025-05-08 Ganghua Wang , Zhaorun Chen , Bo Li , Haifeng Xu

Evaluating aligned large language models' (LLMs) ability to recognize and reject unsafe user requests is crucial for safe, policy-compliant deployments. Existing evaluation efforts, however, face three limitations that we address with…

As large language models (LLMs) transition from research prototypes to production systems, practitioners often need reliable methods to verify model outputs and characterize tail risk for safe deployment. While sampling-based estimates…

人工智能 · 计算机科学 2026-05-11 Tarun Suresh , Nalin Wadhwa , Debangshu Banerjee , Gagandeep Singh

Aligned LLMs are secure, capable of recognizing and refusing to answer malicious questions. However, the role of internal parameters in maintaining such security is not well understood yet, further these models can be vulnerable to security…

密码学与安全 · 计算机科学 2025-04-08 Shen Li , Liuyi Yao , Lan Zhang , Yaliang Li

Computational capability often falls short when confronted with massive data, posing a common challenge in establishing a statistical model or statistical inference method dealing with big data. While subsampling techniques have been…

统计方法学 · 统计学 2024-10-31 Yixiao Ruan , Zan Li , Zhaohui Li , Dennis K. J. Lin , Qingpei Hu , Dan Yu

Large language models (LLMs) are systematically overconfident: they routinely express high certainty on questions they often answer incorrectly. Existing calibration methods either require labeled validation data, degrade under distribution…

计算与语言 · 计算机科学 2026-04-14 Mohamed Rissal Hedna , Jan Strich , Martin Semmann , Chris Biemann

As large language models (LLMs) expose systemic security challenges in high risk applications, including privacy leaks, bias amplification, and malicious abuse, there is an urgent need for a dynamic risk assessment and collaborative defence…

密码学与安全 · 计算机科学 2026-02-05 Xiaoyan Zhang , Dongyang Lyu , Xiaoqi Li

Large language models (LLMs) are increasingly used to assist developers with code, yet their implementations of cryptographic functionality often contain exploitable flaws. Minor design choices (e.g., static initialization vectors or…

密码学与安全 · 计算机科学 2026-02-09 Max Manolov , Tony Gao , Siddharth Shukla , Cheng-Ting Chou , Ryan Lagasse

Discussion and debate among Large Language Models (LLMs) have gained considerable attention due to their potential to enhance the reasoning ability of LLMs. Although natural language is an obvious choice for communication due to LLM's…

计算与语言 · 计算机科学 2024-02-27 Chau Pham , Boyi Liu , Yingxiang Yang , Zhengyu Chen , Tianyi Liu , Jianbo Yuan , Bryan A. Plummer , Zhaoran Wang , Hongxia Yang

Large audio language models (LALMs) are increasingly used to reason over long audio clips, yet deployment often compresses audio before inference to reduce memory and latency. The risk is that compression can leave aggregate accuracy…

音频与语音处理 · 电气工程与系统科学 2026-05-08 Amir Ivry

Large language models (LLMs) have opened new paradigms in optimization modeling by enabling the generation of executable solver code from natural language descriptions. Despite this promise, existing approaches typically remain…

人工智能 · 计算机科学 2026-01-28 Yansen Zhang , Qingcan Kang , Yujie Chen , Yufei Wang , Xiongwei Han , Tao Zhong , Mingxuan Yuan , Chen Ma

Large language models (LLMs) demonstrate remarkable performance across diverse tasks, yet their effectiveness frequently depends on costly commercial APIs or cloud services. Model selection thus entails a critical trade-off between…

分布式、并行与集群计算 · 计算机科学 2025-10-08 Yuanzhe Shen , Yide Liu , Zisu Huang , Ruicheng Yin , Xiaoqing Zheng , Xuanjing Huang

The deployment of Large Language Models (LLMs) in content generation raises significant safety concerns, particularly regarding the transparency and interpretability of content evaluations. Current methods, primarily focused on binary…

计算与语言 · 计算机科学 2024-08-14 Yixiu Liu , Yuxiang Zheng , Shijie Xia , Jiajun Li , Yi Tu , Chaoling Song , Pengfei Liu

Safety alignment in large language models (LLMs) is primarily evaluated under open-ended generation, where models can mitigate risk by refusing to respond. In contrast, many real-world applications place LLMs in structured decision-making…

计算与语言 · 计算机科学 2026-04-21 Yuheng Chen , Zhiyu Wu , Bowen Cheng , Tetsuro Takahashi

Large language models (LLMs) are widely deployed as general-purpose problem solvers, making accurate confidence estimation critical for reliable use. Prior work on LLM calibration largely focuses on response-level confidence, which…

计算与语言 · 计算机科学 2026-02-17 Sin-Han Yang , Cheng-Kuang Wu , Chieh-Yen Lin , Yun-Nung Chen , Hung-yi Lee , Shao-Hua Sun

Large Language Models (LLMs) have recently emerged as planners for language-instructed agents, generating sequences of actions to accomplish natural language tasks. However, their reliability remains a challenge, especially in long-horizon…

机器人学 · 计算机科学 2025-11-11 Jun Wang , Yevgeniy Vorobeychik , Yiannis Kantaros

In large-scale prediction problems, exhaustively following up on all test units is often impractical and inefficient, motivating a selective reporting strategy that fulfills the dual requirements of informativeness and trustworthiness.…

统计理论 · 数学 2026-05-27 Wangcheng Li , Guanlan Zhao , Xu Guo , Wenguang Sun

Increasing test-time computation is a straightforward approach to enhancing the quality of responses in Large Language Models (LLMs). While Best-of-N sampling and Self-Consistency with majority voting are simple and effective, they require…

机器学习 · 计算机科学 2025-03-04 Chengsong Huang , Langlin Huang , Jixuan Leng , Jiacheng Liu , Jiaxin Huang

Prediction sets provide a means of quantifying the uncertainty in predictive tasks. Using held out calibration data, conformal prediction and risk control can produce prediction sets that exhibit statistically valid error control in a…

机器学习 · 统计学 2026-02-05 Bror Hultberg , Dave Zachariah , Antônio H. Ribeiro

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…

机器学习 · 计算机科学 2026-04-22 Thomas Zollo , Jimmy Wang , Richard Zemel