output
19992026
most citedSparsistency and rates of convergence in large covariance matrix estimation

421 citations

Showing 2025Show all

14 papers · 1 filter

cs.DL2025★ 1 cited

Can ChatGPT be a good follower of academic paradigms? Research quality evaluations in conflicting areas of sociology

Mike Thelwall, Ralph Schroeder, Meena Dhanda

Purpose: It has become increasingly likely that Large Language Models (LLMs) will be used to score the quality of academic publications to support research assessment goals in the…

stat.ME2025★ 1 cited

Maximum softly penalised likelihood in factor analysis

Philipp Sterzinger, Ioannis Kosmids, Irini Moustaki

Estimation in exploratory factor analysis often yields estimates on the boundary of the parameter space. Such occurrences, known as Heywood cases, are characterised by non-positive…

cs.CY2025

Ingroup bias is prevalent in user reports of hate and abuse online

Florence E. Enock, Helen Z. Margetts, Jonathan Bright

The prevalence of online hate and abuse is a pressing global problem. While tackling such societal harms is a priority for research across the social sciences, it is a difficult ta…

cs.LG2025★ 3 cited

Deep learning four decades of human migration

Thomas Gaskin, Guy J. Abel

We present a novel and detailed dataset on origin-destination annual migration flows and stocks between 230 countries and regions, spanning the period from 1990 to the present. Our…

math.CO2025

Determining a graph from its reconfiguration graph

Gaétan Berthe, Caroline Brosse, Brian Hearn +3

Given a graph and a natural number , the -recolouring graph is the graph whose vertices are the -colourings of and whose edges link pairs of col…

cs.CR2025

Accountable Liveness

Andrew Lewis-Pye, Joachim Neu, Tim Roughgarden +1

Safety and liveness are the two classical security properties of consensus protocols. Recent works have strengthened safety with accountability: should any safety violation occur,…

q-fin.ST2025★ 6 cited

Large language models in finance : what is financial sentiment?

Kemal Kirtac, Guido Germano

Financial sentiment has become a crucial yet complex concept in finance, increasingly used in market forecasting and investment strategies. Despite its growing importance, there re…

math.CO2025

Edge isoperimetry of lattices

Cameron Strachan, Konrad Swanepoel

We present two results related to an edge-isoperimetric question for Cayley graphs on the integer lattice asked by Ben Barber and Joshua Erde [Isoperimetry of Integer Lattices, Dis…

q-fin.PM2025

Dynamically optimal portfolios for monotone mean--variance preferences

Aleš Černý, Johannes Ruf, Martin Schweizer

Monotone mean-variance (MMV) utility is the minimal modification of the classical Markowitz utility that respects rational ordering of investment opportunities. This paper provides…

stat.ME2025

On a fast consistent selection of nested models with possibly unnormalized probability densities

Rong Bian, Kung-Sik Chan, Bing Cheng +1

Models with unnormalized probability density functions are ubiquitous in statistics, artificial intelligence and many other fields. However, they face significant challenges in mod…

econ.GN2025★ 3 cited

Capitalizing on a Crisis: A Computational Analysis of all Five Million British Firms During the Covid-19 Pandemic

Naomi Muggleton, Charles Rahal, Aaron Reeves

The Covid-19 pandemic brought unprecedented changes to business ownership in the UK which affects a generation of entrepreneurs and their employees. Nonetheless, the impact remains…

cs.CY2025★ 12 cited

DiversityOne: A Multi-Country Smartphone Sensor Dataset for Everyday Life Behavior Modeling

Matteo Busso, Andrea Bontempelli, Leonardo Javier Malcotti +23

Understanding everyday life behavior of young adults through personal devices, e.g., smartphones and smartwatches, is key for various applications, from enhancing the user experien…

cs.DC2025

Morpheus Consensus: Excelling on trails and autobahns

Andrew Lewis-Pye, Ehud Shapiro

Recent research in consensus has often focussed on protocols for State-Machine-Replication (SMR) that can handle high throughputs. Such state-of-the-art protocols (generally DAG-ba…

cond-mat.stat-mech2025★ 1 cited

Top eigenpair statistics of diluted Wishart matrices

Barak Budnick, Preben Forer, Pierpaolo Vivo +3

Using the replica method, we compute the statistics of the top eigenpair of diluted covariance matrices of the form , where is a…