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Though successful, federated learning presents new challenges for machine learning, especially when the issue of data heterogeneity, also known as Non-IID data, arises. To cope with the statistical heterogeneity, previous works incorporated…

Machine Learning · Computer Science 2022-10-03 Mahdi Morafah , Saeed Vahidian , Chen Chen , Mubarak Shah , Bill Lin

Most existing person re-identification (re-id) methods focus on learning the optimal distance metrics across camera views. Typically a person's appearance is represented using features of thousands of dimensions, whilst only hundreds of…

Computer Vision and Pattern Recognition · Computer Science 2016-03-08 Li Zhang , Tao Xiang , Shaogang Gong

Statistical thinking partially depends upon an iterative process by which essential features of a problem setting are identified and mapped onto an abstract model or archetype, and then translated back into the context of the original…

Other Statistics · Statistics 2019-02-21 Matthew Beckman , Robert delMas

Fusion-in-Decoder (FiD) is an effective retrieval-augmented language model applied across a variety of open-domain tasks, such as question answering, fact checking, etc. In FiD, supporting passages are first retrieved and then processed…

Computation and Language · Computer Science 2023-11-07 Moshe Berchansky , Peter Izsak , Avi Caciularu , Ido Dagan , Moshe Wasserblat

We propose scale-free Identifier Network(sfIN), a novel model for event identification in documents. In general, sfIN first encodes a document into multi-scale memory stacks, then extracts special events via conducting multi-scale actions,…

Computation and Language · Computer Science 2017-10-04 Yukun Yan , Daqi Zheng , Zhengdong Lu , Sen Song

Person re-identification (re-ID) aims to recognize instances of the same person contained in multiple images taken across different cameras. Existing methods for re-ID tend to rely heavily on the assumption that both query and gallery…

Computer Vision and Pattern Recognition · Computer Science 2020-03-17 Yu-Jhe Li , Zhengyi Luo , Xinshuo Weng , Kris M. Kitani

We present a new method for image feature-extraction which is based on representing an image by a finite-dimensional vector of distances that measure how different the image is from a set of image prototypes. We use the recently introduced…

Machine Learning · Computer Science 2013-05-21 Uzi Chester , Joel Ratsaby

When evaluating identity-focused tasks such as personalized generation and image editing, existing vision encoders entangle object identity with background context, leading to unreliable representations and metrics. We introduce the first…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Aleksandar Cvejic , Rameen Abdal , Abdelrahman Eldesokey , Bernard Ghanem , Peter Wonka

High dimensional data can have a surprising property: pairs of data points may be easily separated from each other, or even from arbitrary subsets, with high probability using just simple linear classifiers. However, this is more of a rule…

Machine Learning · Computer Science 2023-11-15 Oliver J. Sutton , Qinghua Zhou , Alexander N. Gorban , Ivan Y. Tyukin

Big Data involves both a large number of events but also many variables. This paper will concentrate on the challenge presented by the large number of variables in a Big Dataset. It will start with a brief review of exploratory data…

Applications · Statistics 2019-07-24 S. J. Watts , L. Crow

We consider the "partial information decomposition" (PID) problem, which aims to decompose the information that a set of source random variables provide about a target random variable into separate redundant, synergistic, union, and unique…

Information Theory · Computer Science 2022-11-22 Artemy Kolchinsky

The recently developed and publicly available synthetic image generation methods and services make it possible to create extremely realistic imagery on demand, raising great risks for the integrity and safety of online information.…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Christos Koutlis , Symeon Papadopoulos

We present a novel end-to-end framework that generates highly compact (typically 6-15 dimensions), discrete (int4 type), and interpretable node representations, termed node identifiers (node IDs), to tackle inference challenges on…

Machine Learning · Computer Science 2024-10-21 Yuankai Luo , Hongkang Li , Qijiong Liu , Lei Shi , Xiao-Ming Wu

The primary goal of out-of-distribution (OOD) detection tasks is to identify inputs with semantic shifts, i.e., if samples from novel classes are absent in the in-distribution (ID) dataset used for training, we should reject these OOD…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Xingming Long , Jie Zhang , Shiguang Shan , Xilin Chen

The use of synthetic data for training computer vision algorithms has become increasingly popular due to its cost-effectiveness, scalability, and ability to provide accurate multi-modality labels. Although recent studies have demonstrated…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Eli Friedman , Assaf Lehr , Alexey Gruzdev , Vladimir Loginov , Max Kogan , Moran Rubin , Orly Zvitia

Person re-identification (reID) aims to match person images to retrieve the ones with the same identity. This is a challenging task, as the images to be matched are generally semantically misaligned due to the diversity of human poses and…

Computer Vision and Pattern Recognition · Computer Science 2020-03-19 Xin Jin , Cuiling Lan , Wenjun Zeng , Guoqiang Wei , Zhibo Chen

In text-to-image personalization, a timely and crucial challenge is the tendency of generated images overfitting to the biases present in the reference images. We initiate our study with a comprehensive categorization of the biases into…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Jimyeong Kim , Jungwon Park , Wonjong Rhee

We investigate the effects on authorship identification tasks of a fundamental shift in how to conceive the vectorial representations of documents that are given as input to a supervised learner. In ``classic'' authorship analysis a feature…

Machine Learning · Computer Science 2023-01-25 Silvia Corbara , Alejandro Moreo , Fabrizio Sebastiani

Generative recommendation provides a novel paradigm in which each item is represented by a discrete semantic ID (SID) learned from rich content. Most existing methods treat SIDs as predefined and train recommenders under static indexing. In…

Information Retrieval · Computer Science 2026-04-15 Junchen Fu , Xuri Ge , Alexandros Karatzoglou , Ioannis Arapakis , Suzan Verberne , Joemon M. Jose , Zhaochun Ren

Fr\'echet Inception Distance (FID) is widely used to evaluate image generators, yet lower FID does not always correspond to better sample quality. We show that this mismatch depends in part on the geometry of the reference dataset. In a…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Yunghee Lee , Byeonghyun Pak