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Recommender Systems (RS) often suffer from popularity bias, where a small set of popular items dominate the recommendation results due to their high interaction rates, leaving many less popular items overlooked. This phenomenon…

信息检索 · 计算机科学 2025-05-27 Juno Prent , Masoud Mansoury

A novel framework for consensus clustering is presented which has the ability to determine both the number of clusters and a final solution using multiple algorithms. A consensus similarity matrix is formed from an ensemble using multiple…

机器学习 · 统计学 2014-08-06 Shaina Race , Carl Meyer

Quality assessments of models in unsupervised learning and clustering verification in particular have been a long-standing problem in the machine learning research. The lack of robust and universally applicable cluster validity scores often…

机器学习 · 统计学 2018-03-30 Luzie Helfmann , Johannes von Lindheim , Mattes Mollenhauer , Ralf Banisch

In this paper we consider a synchronous message passing system in which in every round an external adversary is able to send each processor up to k messages with falsified sender identities and arbitrary content. It is formally shown that…

分布式、并行与集群计算 · 计算机科学 2010-07-08 Michael Okun

Rankings, representing preferences over a set of candidates, are widely used in many information systems, e.g., group decision making and information retrieval. It is of great importance to evaluate the consensus of the obtained rankings…

人工智能 · 计算机科学 2019-07-29 Zhengui Xue , Zhiwei Lin , Hui Wang , Sally McClean

Images produced by text-to-image diffusion models might not always faithfully represent the semantic intent of the provided text prompt, where the model might overlook or entirely fail to produce certain objects. Existing solutions often…

计算机视觉与模式识别 · 计算机科学 2023-12-12 Tuna Han Salih Meral , Enis Simsar , Federico Tombari , Pinar Yanardag

The strategy for selecting candidate sets -- the set of items that the recommendation system is expected to rank for each user -- is an important decision in carrying out an offline top-$N$ recommender system evaluation. The set of…

信息检索 · 计算机科学 2023-10-31 Ngozi Ihemelandu , Michael D. Ekstrand

The advancement of Internet-of-Things (IoT) edge devices with various types of sensors enables us to harness diverse information with Mobile Crowd-Sensing applications (MCS). This highly dynamic setting entails the collection of ubiquitous…

密码学与安全 · 计算机科学 2018-05-29 Nikhil Banerjee , Thanassis Giannetsos , Emmanouil Panaousis , Clive Cheong Took

The growing need for accurate and reliable tracking systems has driven significant progress in sensor fusion and object tracking techniques. In this paper, we design two variational Bayesian trackers that effectively track multiple targets…

信号处理 · 电气工程与系统科学 2023-09-06 Qing Li , Runze Gan , Simon Godsill

Inspired by distributed resource allocation problems in dynamic topology networks, we initiate the study of distributed consensus with finite messaging passing. We first find a sufficient condition on the network graph for which no…

信息论 · 计算机科学 2010-07-01 Debashis Dash , Ashutosh Sabharwal

Most decisions require information gathering from a stimulus presented with different gaps. Indeed, the brain process of this integration is rarely ambiguous. Recently, it has been claimed that humans can optimally integrate the information…

神经元与认知 · 定量生物学 2018-10-29 Maryam Tohidi-Moghaddam , Sajjad Zabbah , Farzaneh Olianezhad , Reza Ebrahimpour

We describe a method to achieve distributed consensus in a Content Centric Network using the PAXOS algorithm. Consensus is necessary, for example, if multiple writers wish to agree on the current version number of a CCNx name or if multiple…

网络与互联网体系结构 · 计算机科学 2023-10-27 Marc Mosko

Distributed consensus, the ability to reach agreement in the face of failures, is a fundamental primitive for constructing reliable distributed systems. The Paxos algorithm is synonymous with consensus and widely utilized in production.…

分布式、并行与集群计算 · 计算机科学 2022-03-08 Heidi Howard , Richard Mortier

We propose consensus propagation, an asynchronous distributed protocol for averaging numbers across a network. We establish convergence, characterize the convergence rate for regular graphs, and demonstrate that the protocol exhibits better…

信息论 · 计算机科学 2007-07-13 Ciamac C. Moallemi , Benjamin Van Roy

In this paper, we investigate the approximate consensus problem in highly dynamic networks in which topology may change continually and unpredictably. We prove that in both synchronous and partially synchronous systems, approximate…

分布式、并行与集群计算 · 计算机科学 2014-11-13 Bernadette Charron-Bost , Matthias Függer , Thomas Nowak

In this article we extend a recently introduced kinetic model for consensus-based segmentation of images. In particular, we will interpret the set of pixels of a 2D image as an interacting particle system which evolves in time in view of a…

图像与视频处理 · 电气工程与系统科学 2025-01-27 Raffaella Fiamma Cabini , Horacio Tettamanti , Mattia Zanella

We propose a separation principle that enables a systematic way of designing decentralized algorithms used in consensus optimization. Specifically, we show that a decentralized optimization algorithm can be constructed by combining a…

最优化与控制 · 数学 2019-03-05 Shuo Han

We consider the weight design problem for the consensus algorithm under a finite time horizon. We assume that the underlying network is random where the links fail at each iteration with certain probability and the link failures can be…

信息论 · 计算机科学 2009-09-29 Dusan Jakovetic , Joao Xavier , Jose' M. F. Moura

In this paper, we propose a novel concept of path consistency to learn robust object matching without using manual object identity supervision. Our key idea is that, to track a object through frames, we can obtain multiple different…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Zijia Lu , Bing Shuai , Yanbei Chen , Zhenlin Xu , Davide Modolo

With the tremendous progress in sensing and IoT infrastructure, it is foreseeable that IoT systems will soon be available for commercial markets, such as in people's homes. In this paper, we present a deployment study using sensors attached…

人机交互 · 计算机科学 2018-07-13 Yanxia Zhang , Hayley Hung