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This paper introduces a family of local feature aggregation functions and a novel method to estimate their parameters, such that they generate optimal representations for classification (or any task that can be expressed as a cost function…

Machine Learning · Computer Science 2017-06-28 Angelos Katharopoulos , Despoina Paschalidou , Christos Diou , Anastasios Delopoulos

In the realm of deep learning, spatial attention mechanisms have emerged as a vital method for enhancing the performance of convolutional neural networks. However, these mechanisms possess inherent limitations that cannot be overlooked.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Xin Zhang , Chen Liu , Degang Yang , Tingting Song , Yichen Ye , Ke Li , Yingze Song

Large language models have been widely adopted in natural language processing, yet they face the challenge of generating unreliable content. Recent works aim to reduce misinformation and hallucinations by resorting to attribution as a means…

Computation and Language · Computer Science 2024-03-28 Dongfang Li , Zetian Sun , Baotian Hu , Zhenyu Liu , Xinshuo Hu , Xuebo Liu , Min Zhang

With the rapid advancement of pre-trained large language models (LLMs), recent endeavors have leveraged the capabilities of LLMs in relevance modeling, resulting in enhanced performance. This is usually done through the process of…

Information Retrieval · Computer Science 2025-05-21 Hong Liu , Saisai Gong , Yixin Ji , Kaixin Wu , Jia Xu , Jinjie Gu

Neural network visualization techniques mark image locations by their relevancy to the network's classification. Existing methods are effective in highlighting the regions that affect the resulting classification the most. However, as we…

Computer Vision and Pattern Recognition · Computer Science 2020-12-04 Shir Gur , Ameen Ali , Lior Wolf

The challenge in sourcing attribution for forgery faces has gained widespread attention due to the rapid development of generative techniques. While many recent works have taken essential steps on GAN-generated faces, more threatening…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Zhimin Sun , Shen Chen , Taiping Yao , Bangjie Yin , Ran Yi , Shouhong Ding , Lizhuang Ma

Given the effectiveness and ease of use, Item-based Collaborative Filtering (ICF) methods have been broadly used in industry in recent years. The key of ICF lies in the similarity measurement between items, which however is a coarse-grained…

Information Retrieval · Computer Science 2019-11-12 Liang Zhang , Guannan Liu , Junjie Wu

With the rapid advancement of generative models, the visual quality of generated images has become nearly indistinguishable from the real ones, posing challenges to content authenticity verification. Existing methods for detecting…

Computer Vision and Pattern Recognition · Computer Science 2025-01-24 JiaXin Chen , Miao Hu , DengYong Zhang , Yun Song , Xin Liao

Attribute-based recognition models, due to their impressive performance and their ability to generalize well on novel categories, have been widely adopted for many computer vision applications. However, usually both the attribute vocabulary…

Computer Vision and Pattern Recognition · Computer Science 2017-04-13 Ziad Al-Halah , Rainer Stiefelhagen

Modern surveillance systems increasingly rely on multi-wavelength sensors and deep neural networks to recognize faces in infrared images captured at night. However, most facial recognition models are trained on visible light datasets,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Mingshu Cai , Osamu Yoshie , Yuya Ieiri

We explore on-device self-supervised collaborative fine-tuning of large language models with limited local data availability. Taking inspiration from the collaborative learning community, we introduce three distinct trust-weighted gradient…

Computation and Language · Computer Science 2024-08-08 Nicolas Wagner , Dongyang Fan , Martin Jaggi

Many real-world machine learning applications are characterized by a huge number of features, leading to computational and memory issues, as well as the risk of overfitting. Ideally, only relevant and non-redundant features should be…

Machine Learning · Computer Science 2023-06-21 Paolo Bonetti , Alberto Maria Metelli , Marcello Restelli

Autoregressive (AR) models are highly effective for image generation, yet their standard maximum-likelihood estimation training lacks direct optimization for sample quality and diversity. While reinforcement learning (RL) has been used to…

Machine Learning · Computer Science 2026-03-25 Orhun Buğra Baran , Melih Kandemir , Ramazan Gokberk Cinbis

Vehicle re-identification is an important computer vision task where the objective is to identify a specific vehicle among a set of vehicles seen at various viewpoints. Recent methods based on deep learning utilize a global average pooling…

Computer Vision and Pattern Recognition · Computer Science 2021-02-02 Abu Md Niamul Taufique , Andreas Savakis

This paper studies the generalization properties of a recently proposed kernel method, the Random Feature models with Learnable Activation Functions (RFLAF). By applying a data-dependent sampling scheme for generating features, we provide…

Machine Learning · Computer Science 2025-10-20 Zailin Ma , Jiansheng Yang , Yaodong Yang

Interpretable text representations should expose coordinates that are not only predictive, but also meaningful enough for independent auditors to apply. Existing discriminative representations often use anonymous embedding directions, while…

Computation and Language · Computer Science 2026-05-21 Tong Wang , Yiqing Xu , Leo Yang Yang

We introduce LLaVA-Reward, an efficient reward model designed to automatically evaluate text-to-image (T2I) generations across multiple perspectives, leveraging pretrained multimodal large language models (MLLMs). Existing MLLM-based…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Shijie Zhou , Ruiyi Zhang , Huaisheng Zhu , Branislav Kveton , Yufan Zhou , Jiuxiang Gu , Jian Chen , Changyou Chen

In this paper, we propose a simple but effective semantic-based aggregation (SBA) method. The proposed SBA utilizes the discriminative filters of deep convolutional layers as semantic detectors. Moreover, we propose the effective…

Computer Vision and Pattern Recognition · Computer Science 2018-11-14 Jian Xu , Chunheng Wang , Chengzuo Qi , Cunzhao Shi , Baihua Xiao

Large Language Models (LLMs) have shown great potential for enhancing recommender systems through their extensive world knowledge and reasoning capabilities. However, effectively translating these semantic signals into traditional…

Information Retrieval · Computer Science 2026-02-25 Junjie Meng , Ranxu zhang , Wei Wu , Rui Zhang , Chuan Qin , Qi Zhang , Qi Liu , Hui Xiong , Chao Wang

Learning on sets is increasingly gaining attention in the machine learning community, due to its widespread applicability. Typically, representations over sets are computed by using fixed aggregation functions such as sum or maximum.…

Machine Learning · Computer Science 2021-06-07 Giovanni Pellegrini , Alessandro Tibo , Paolo Frasconi , Andrea Passerini , Manfred Jaeger