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Meta-Learning (ML) has proven to be a useful tool for training Few-Shot Learning (FSL) algorithms by exposure to batches of tasks sampled from a meta-dataset. However, the standard training procedure overlooks the dynamic nature of the…

机器学习 · 计算机科学 2021-04-13 Mateusz Ochal , Massimiliano Patacchiola , Amos Storkey , Jose Vazquez , Sen Wang

We investigate signed networks with community structure with respect to their spectrum and their evolution under a dynamical model of structural balance, a prominent theory of signed social networks. The spectrum of the adjacency matrix…

社会与信息网络 · 计算机科学 2020-07-15 Megan Morrison , Michael Gabbay

Structural balance theory studies stability in networks. Given a $n$-vertex complete graph $G=(V,E)$ whose edges are labeled positive or negative, the graph is considered \emph{balanced} if every triangle either consists of three positive…

数据结构与算法 · 计算机科学 2023-06-02 Vikrant Ashvinkumar , Sepehr Assadi , Chengyuan Deng , Jie Gao , Chen Wang

Index structures are fundamental for efficient query processing on large-scale datasets. Learned indexes model the indexing process as a prediction problem to overcome the inherent trade-offs of traditional indexes. However, most existing…

数据库 · 计算机科学 2026-03-31 Yuzhen Chen , Bin Yao

An important measure of signed graphs is the line index of balance which has several applications in many fields. However, this graph-theoretic measure was underused for decades because of the inherent complexity in its computation which is…

社会与信息网络 · 计算机科学 2018-02-08 Samin Aref , Andrew J. Mason , Mark C. Wilson

Meso-scale structures in signed networks have been studied under the limiting assumption of the validity of social balance theory, which predicts positive connections within groups and negative connections between groups. Here, we propose…

社会与信息网络 · 计算机科学 2025-12-15 Wei Zhang , Olga Boichak , Tristram J. Alexander , Tiago P. Peixoto , Eduardo G. Altmann

Prediction of pair potential given a typical configuration of an interacting classical system is a difficult inverse problem. There exists no exact result that can predict the potential given the structural information. We demonstrate that…

软凝聚态物质 · 物理学 2020-12-25 Saientan Bag , Rituparno Mandal

Signed networks allow us to model conflicting relationships and interactions, such as friend/enemy and support/oppose. These signed interactions happen in real-time. Modeling such dynamics of signed networks is crucial to understanding the…

社会与信息网络 · 计算机科学 2023-02-07 Kartik Sharma , Mohit Raghavendra , Yeon Chang Lee , Anand Kumar M , Srijan Kumar

Signed networks appear naturally in contexts where conflict or animosity is apparent. In this book chapter we review some of the literature on signed networks, especially in the context of partitioning. Most of the work is founded in what…

物理与社会 · 物理学 2018-03-07 V. A. Traag , P. Doreian , A. Mrvar

Network data has attracted growing interest across scientific domains, prompting the development of various network models. Existing network analysis methods mainly focus on unsigned networks, whereas signed networks, consisting of both…

统计方法学 · 统计学 2026-03-25 Yuwen Wang , Shiwen Ye , Jingnan Zhang , Junhui Wang

Many complex systems - be they financial, natural, or social - are composed of units - such as stocks, neurons, or agents - whose joint activity can be represented as a multivariate time series. An issue of both practical and theoretical…

In contrast with the scalar-weighted networks, where bipartite consensus can be achieved if and only if the underlying signed network is structurally balanced, the structural balance property is no longer a graph-theoretic equivalence to…

系统与控制 · 电气工程与系统科学 2021-06-25 Chongzhi Wang , Lulu Pan , Haibin Shao , Dewei Li , Yugeng Xi

We propose a signed network formation game, in which pairs of individuals strategically change the signs of the edges in a complete network. These individuals are members of a social network who strategically reduce cognitive dissonances by…

社会与信息网络 · 计算机科学 2019-10-01 Pedro Cisneros-Velarde , Francesco Bullo

Structural balance modeling for signed graph networks presents how to model the sources of conflicts. The state-of-the-art focuses on computing the frustration index of a signed graph, a critical step toward solving problems in social and…

社会与信息网络 · 计算机科学 2025-01-16 Muhieddine Shebaro , Jelena Tešić

Several structure learning algorithms have been proposed towards discovering causal or Bayesian Network (BN) graphs. The validity of these algorithms tends to be evaluated by assessing the relationship between the learnt and the ground…

机器学习 · 计算机科学 2020-09-03 Anthony C. Constantinou

In a signed graph, each link is labeled with either a positive or a negative sign. This is particularly appropriate to model polarized systems. Such a graph can be characterized through the notion of structural balance, which relies on the…

社会与信息网络 · 计算机科学 2019-05-01 Nejat Arinik , Rosa Figueiredo , Vincent Labatut

Understanding the structure of weighted signed networks is essential for analysing social systems in which relationships vary both in sign and strength. Despite significant advances in statistical network analysis, there is still a lack of…

统计方法学 · 统计学 2025-11-06 Alberto Caimo , Isabella Gollini

Working memory plays a crucial role in various aspects of human life. Therefore, it has been an area of interest in different research studies, especially neuroscience. The neuroscientists investigating working memory have primarily…

神经元与认知 · 定量生物学 2024-11-26 Sepehr Gourabi , Masoud Lotfalipour , Reza Khosrowabadi , Reza Jafari

The global balance is a well-known indicator of the behavior of a signed network. Recent literature has introduced the concept of local balance as a measure of the contribution of a single node to the overall balance of the network. In the…

投资组合管理 · 定量金融 2025-12-12 Paolo Bartesaghi , Rosanna Grassi , Pierpaolo Uberti

Complex numbers define the relationship between entities in many situations. A canonical example would be the off-diagonal terms in a Hamiltonian matrix in quantum physics. Recent years have seen an increasing interest to extend the tools…

社会与信息网络 · 计算机科学 2023-07-06 Yu Tian , Renaud Lambiotte