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The main result of this thesis is the development of a novel connectivity estimation method, called Total Spiking Probability Edges (TSPE). Based on cross-correlation and edge filtering at different time scales this method is proposed and…

Signal Processing · Electrical Eng. & Systems 2020-05-15 Stefano De Blasi

In today's cyber-enabled smart grids, high penetration of uncertain renewables, purposeful manipulation of meter readings, and the need for wide-area situational awareness, call for fast, accurate, and robust power system state estimation.…

Systems and Control · Computer Science 2019-02-07 Gang Wang , Georgios B. Giannakis , Jie Chen

Cost volume is an essential component of recent deep models for optical flow estimation and is usually constructed by calculating the inner product between two feature vectors. However, the standard inner product in the commonly-used cost…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Taihong Xiao , Jinwei Yuan , Deqing Sun , Qifei Wang , Xin-Yu Zhang , Kehan Xu , Ming-Hsuan Yang

Brain volume calculations are crucial in modern medical research, especially in the study of neurodevelopmental disorders. In this paper, we present an algorithm for calculating two classifications of brain volume, total brain volume (TBV)…

Image and Video Processing · Electrical Eng. & Systems 2019-04-24 Kevin Karsch , Brian Grinstead , Qing He , Ye Duan

We propose a novel formulation for phase synchronization -- the statistical problem of jointly estimating alignment angles from noisy pairwise comparisons -- as a nonconvex optimization problem that enforces consistency among the pairwise…

Information Theory · Computer Science 2019-05-15 Tingran Gao , Zhizhen Zhao

This paper introduces a conversion matrix method for linear periodically time-variant (LPTV) digital phase-locked loop (DPLL) phase noise modeling that offers precise and computationally efficient results to enable rapid design iteration…

Signal Processing · Electrical Eng. & Systems 2024-07-01 Hongyu Lu , Patrick P. Mercier

Prevalent reinforcement learning~(RL) methods for fine-tuning LLM reasoners, such as GRPO or Leave-one-out PPO, abandon the learned value function in favor of empirically estimated returns. This hinders test-time compute scaling that relies…

Machine Learning · Computer Science 2026-04-14 Kusha Sareen , Morgane M Moss , Alessandro Sordoni , Rishabh Agarwal , Arian Hosseini

Large language model (LLM) agents on multi-step tasks suffer reasoning degradation, looping, drift, stuck states, at rates up to 30% on hard tasks. Current solutions include hard step limits (abrupt) or LLM-as-judge monitoring (10-15%…

Artificial Intelligence · Computer Science 2026-04-16 Rafflesia Khan , Nafiul Islam Khan

We propose a new algorithm---Stochastic Proximal Langevin Algorithm (SPLA)---for sampling from a log concave distribution. Our method is a generalization of the Langevin algorithm to potentials expressed as the sum of one stochastic smooth…

Machine Learning · Statistics 2020-06-17 Adil Salim , Dmitry Kovalev , Peter Richtárik

Recently, significant progress has been made in developing reasoning-capable Large Language Models (LLMs) through long Chain-of-Thought (CoT) techniques. However, this long-CoT reasoning process imposes substantial memory overhead due to…

Computation and Language · Computer Science 2025-05-27 Tengxuan Liu , Shiyao Li , Jiayi Yang , Tianchen Zhao , Feng Zhou , Xiaohui Song , Guohao Dai , Shengen Yan , Huazhong Yang , Yu Wang

In this work we show that the size versus accuracy trade-off of neural network quantization can be significantly improved by increasing the quantization dimensionality. We propose the GPTVQ method, a new fast method for post-training vector…

Multimodal Large Language Models (MLLMs) have demonstrated remarkable performance across diverse applications. However, their computational overhead during deployment remains a critical bottleneck. While Key-Value (KV) caching effectively…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Insu Han , Zeliang Zhang , Zhiyuan Wang , Yifan Zhu , Susan Liang , Jiani Liu , Haiting Lin , Mingjie Zhao , Chenliang Xu , Kun Wan , Wentian Zhao

Verifying multi-step reasoning in large language models is difficult due to imprecise error localization and high token costs. Existing methods either assess entire reasoning chains, suffering attention dilution, or rely on expensive…

Artificial Intelligence · Computer Science 2025-10-06 Yulong Zhang , Li Wang , Wei Du , Peilin Li , Yuqin Dai Zhiyuan Zhao , Lingyong Fang , Ziniu Liu , Ru Zhang , Huijia Zhu , Gongshen Liu

The substantial memory bandwidth and computational demands of large language models (LLMs) present critical challenges for efficient inference. To tackle this, the literature has explored heterogeneous systems that combine neural processing…

Hardware Architecture · Computer Science 2026-05-05 Yuzong Chen , Chao Fang , Xilai Dai , Yuheng Wu , Thierry Tambe , Marian Verhelst , Mohamed S. Abdelfattah

Decentralized large language model (LLM) inference promises transparent and censorship resistant access to advanced AI, yet existing verification approaches struggle to scale to modern models. Proof of Quality (PoQ) replaces cryptographic…

Artificial Intelligence · Computer Science 2025-12-19 Arther Tian , Alex Ding , Frank Chen , Alan Wu , Aaron Chan , Bruce Zhang

We propose a novel algorithm for offline reinforcement learning called Value Iteration with Perturbed Rewards (VIPeR), which amalgamates the pessimism principle with random perturbations of the value function. Most current offline RL…

Machine Learning · Computer Science 2023-03-07 Thanh Nguyen-Tang , Raman Arora

Growing evidence suggests that phase-locked deep brain stimulation (DBS) can effectively regulate abnormal brain connectivity in neurological and psychiatric disorders. This letter therefore presents a low-power SoC with both neural…

Systems and Control · Electrical Eng. & Systems 2023-03-21 Uisub Shin , Cong Ding , Virginia Woods , Alik S. Widge , Mahsa Shoaran

Current Video Large Language Models (VideoLLMs) suffer from quadratic computational complexity and key-value cache scaling, due to their reliance on processing excessive redundant visual tokens. To address this problem, we propose SharpV, a…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Jialong Qin , Xin Zou , Di Lu , Yibo Yan , Xuming Hu

Machine learning algorithms deployed on edge devices must meet certain resource constraints and efficiency requirements. Random Vector Functional Link (RVFL) networks are favored for such applications due to their simple design and training…

Machine Learning · Computer Science 2022-09-02 Cameron Diao , Denis Kleyko , Jan M. Rabaey , Bruno A. Olshausen

Despite major advancements in nonlinear programming (NLP) and convex relaxations, most system operators around the world still predominantly use some form of linear programming (LP) approximation of the AC power flow equations. This is…

Optimization and Control · Mathematics 2021-07-19 Sleiman , Mhanna , Pierluigi , Mancarella