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Fine-tuning large language models (LLMs) is crucial for improving their performance on downstream tasks, but full-parameter fine-tuning (Full-FT) is computationally expensive and memory-intensive. Parameter-efficient fine-tuning (PEFT)…

计算与语言 · 计算机科学 2026-05-12 Longteng Zhang , Lin Zhang , Shaohuai Shi , Xiaowen Chu , Bo Li

Facial Expressions Recognition(FER) on low-resolution images is necessary for applications like group expression recognition in crowd scenarios(station, classroom etc.). Classifying a small size facial image into the right expression…

计算机视觉与模式识别 · 计算机科学 2020-04-07 Wei Jing , Feng Tian , Jizhong Zhang , Kuo-Ming Chao , Zhenxin Hong , Xu Liu

Optimization with orthogonality constraints frequently arises in various fields such as machine learning. Riemannian optimization offers a powerful framework for solving these problems by equipping the constraint set with a Riemannian…

最优化与控制 · 数学 2025-05-20 Andi Han , Pierre-Louis Poirion , Akiko Takeda

Facial expression recognition (FER) plays an important role in a variety of real-world applications such as human-computer interaction. POSTER achieves the state-of-the-art (SOTA) performance in FER by effectively combining facial landmark…

计算机视觉与模式识别 · 计算机科学 2023-02-14 Jiawei Mao , Rui Xu , Xuesong Yin , Yuanqi Chang , Binling Nie , Aibin Huang

Despite the huge success of deep convolutional neural networks in face recognition (FR) tasks, current methods lack explainability for their predictions because of their "black-box" nature. In recent years, studies have been carried out to…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Zewei Xu , Yuhang Lu , Touradj Ebrahimi

For applications such as airport border control, biometric technologies that can process many capture subjects quickly, efficiently, with weak supervision, and with minimal discomfort are desirable. Facial recognition is particularly…

计算机视觉与模式识别 · 计算机科学 2016-05-11 Ethan M. Rudd , Manuel Gunther , Terrance E. Boult

Proximal Policy Optimization (PPO) is widely used in reinforcement learning due to its strong empirical performance, yet it lacks formal guarantees for policy improvement and convergence. PPO's clipped surrogate objective is motivated by a…

机器学习 · 计算机科学 2026-02-02 Razvan-Andrei Lascu , David Šiška , Łukasz Szpruch

In this paper we introduce a technique to produce tighter cutting planes for mixed-integer non-linear programs. Usually, a cutting plane is generated to cut off a specific infeasible point. The underlying idea is to use the infeasible point…

最优化与控制 · 数学 2019-07-19 Felipe Serrano

Face recognition systems (FRS) exhibit significant accuracy differences based on the user's gender. Since such a gender gap reduces the trustworthiness of FRS, more recent efforts have tried to find the causes. However, these studies make…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Paul Jonas Kurz , Haiyu Wu , Kevin W. Bowyer , Philipp Terhörst

Biedl et al. introduced the minimum ply cover problem in CG 2021 following the seminal work of Erlebach and van Leeuwen in SODA 2008. They showed that determining the minimum ply cover number for a given set of points by a given set of…

计算几何 · 计算机科学 2023-01-31 Siddhartha Sarkar

We present a fixed-parameter tractable (FPT) algorithm to find a shortest curve that encloses a set of k required objects in the plane while paying a penalty for enclosing unwanted objects. The input is a set of interior-disjoint simple…

计算几何 · 计算机科学 2025-04-07 Therese Biedl , Éric Colin de Verdière , Fabrizio Frati , Anna Lubiw , Günter Rote

Over the past few decades, numerous attempts have been made to address the problem of recovering a high-resolution (HR) facial image from its corresponding low-resolution (LR) counterpart, a task commonly referred to as face hallucination.…

计算机视觉与模式识别 · 计算机科学 2021-11-23 Ali Abbasi , Mohammad Rahmati

Unconstrained face recognition is an active research area among computer vision and biometric researchers for many years now. Still the problem of face recognition in low quality photos has not been well-studied so far. In this paper, we…

计算机视觉与模式识别 · 计算机科学 2023-07-13 Iqbal Nouyed , Na Zhang

In this paper we propose a new iterative algorithm to solve the fair PCA (FPCA) problem. We start with the max-min fair PCA formulation originally proposed in [1] and derive a simple and efficient iterative algorithm which is based on the…

机器学习 · 统计学 2023-05-11 Prabhu Babu , Petre Stoica

The rapid adoption of facial recognition (FR) technology by both government and commercial entities in recent years has raised concerns about civil liberties and privacy. In response, a broad suite of so-called "anti-facial recognition"…

密码学与安全 · 计算机科学 2023-02-16 Emily Wenger , Shawn Shan , Haitao Zheng , Ben Y. Zhao

In this paper, we develop a parameterized proximal point algorithm (P-PPA) for solving a class of separable convex programming problems subject to linear and convex constraints. The proposed algorithm is provable to be globally convergent…

最优化与控制 · 数学 2018-12-11 Jianchao Bai , Hongchao Zhang , Jicheng Li

Face recognition technology has been deployed in various real-life applications. The most sophisticated deep learning-based face recognition systems rely on training millions of face images through complex deep neural networks to achieve…

计算机视觉与模式识别 · 计算机科学 2024-01-25 Dong Han , Yong Li , Joachim Denzler

Efficient data compression is crucial for the storage and transmission of visual data. However, in facial expression recognition (FER) tasks, lossy compression often leads to feature degradation and reduced accuracy. To address these…

计算机视觉与模式识别 · 计算机科学 2025-09-23 Xiumei Li , Marc Windsheimer , Misha Sadeghi , Björn Eskofier , André Kaup

We utilize the same technique as in [arXiv:2205.04254 (2022)] to provide some representations of polynomials non-negative on a basic semi-algebraic set, defined by polynomial inequalities, under more general conditions. Based on each…

最优化与控制 · 数学 2022-10-13 Ngoc Hoang Anh Mai

Polylla is a polygonal mesh algorithm that generates meshes with arbitrarily shaped polygons using the concept of terminal-edge regions. Until now, Polylla has been limited to 2D meshes, but in this work, we extend Polylla to 3D volumetric…

计算几何 · 计算机科学 2025-04-02 Sergio Salinas-Fernández , Nancy Hitschfeld-Kahler