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

421 citations

Showing 2024Show all

15 papers · 1 filter

q-fin.CP2024★ 94 cited

Sentiment trading with large language models

Kemal Kirtac, Guido Germano

We investigate the efficacy of large language models (LLMs) in sentiment analysis of U.S. financial news and their potential in predicting stock market returns. We analyze a datase…

stat.ME2024★ 4 cited

Multiscale Autoregression on Adaptively Detected Timescales

Rafal Baranowski, Yining Chen, Piotr Fryzlewicz

We propose a multiscale approach to time series autoregression, in which linear regressors for the process in question include features of its own path that live on multiple timesc…

cs.SD2024★ 1 cited

Tipping Points, Pulse Elasticity and Tonal Tension: An Empirical Study on What Generates Tipping Points

Canishk Naik, Elaine Chew

Tipping points are moments of change that characterise crucial turning points in a piece of music. This study presents a first step towards quantitatively and systematically descri…

cs.GT2024

A Stable-Set Bound and Maximal Numbers of Nash Equilibria in Bimatrix Games

Constantin Ickstadt, Thorsten Theobald, Bernhard von Stengel

Quint and Shubik (1997) conjectured that a non-degenerate n-by-n game has at most 2^n-1 Nash equilibria in mixed strategies. The conjecture is true for n at most 4 but false for n=…

eess.IV2024

Stool Recognition for Colorectal Cancer Detection through Deep Learning

Glenda Hui En Tan, Goh Xin Ru Karin, Shen Bingquan

Colorectal cancer is the most common cancer in Singapore and the third most common cancer worldwide. Blood in a person's stool is a symptom of this disease, and it is usually detec…

stat.AP2024

Unfolding the Network of Peer Grades: A Latent Variable Approach

Giuseppe Mignemi, Yunxiao Chen, Irini Moustaki

Peer grading is an educational system in which students assess each other's work. It is commonly applied under Massive Open Online Course (MOOC) and offline classroom settings. Wit…

math.OC2024

Continuous-time persuasion by filtering

René Aïd, Ofelia Bonesini, Giorgia Callegaro +1

We frame dynamic persuasion in a partial observation stochastic control Leader-Follower game with an ergodic criterion. The Receiver controls the dynamics of a multidimensional uno…

math.FA2024

On the faithful flatness of some modules arising in analysis

Amol Sasane

The notion of faithful flatness of a module over a commutative ring is studied for two -modules arising in functional analysis, where is a Banach algebra and is a Hi…

stat.ME2024

Exact Exploratory Bi-factor Analysis: A Constraint-based Optimisation Approach

Jiawei Qiao, Yunxiao Chen, Zhiliang Ying

Bi-factor analysis is a form of confirmatory factor analysis widely used in psychological and educational measurement. The use of a bi-factor model requires the specification of an…

math.CO2024

Dirac's theorem for graphs of bounded bandwidth

Alberto Espuny Díaz, Pranshu Gupta, Domenico Mergoni Cecchelli +2

We provide an optimal sufficient condition, relating minimum degree and bandwidth, for a graph to contain a spanning subdivision of the complete bipartite graph . This…

q-fin.RM2024

Phase transitions in debt recycling

Sabrina Aufiero, Preben Forer, Pierpaolo Vivo +2

Debt recycling is an aggressive equity extraction strategy that potentially permits faster repayment of a mortgage. While equity progressively builds up as the mortgage is repaid m…

cs.HC2024★ 3 cited

Exploring diversity perceptions in a community through a Q&A chatbot

Peter Kun, Amalia De Götzen, Miriam Bidoglia +2

While diversity has become a debated issue in design, very little research exists on positive use-cases for diversity beyond scholarly criticism. The current work addresses this ga…

econ.GN2024★ 4 cited

Effects of carbon pricing and other climate policies on CO2 emissions

Emanuel Kohlscheen, Richhild Moessner, Elod Takats

We provide ex-post empirical analysis of the effects of climate policies on carbon dioxide emissions at the aggregate national level. Our results are based on a comprehensive datab…

cs.SI2024★ 74 cited

A new sociology of humans and machines

Milena Tsvetkova, Taha Yasseri, Niccolo Pescetelli +1

From fake social media accounts and generative artificial intelligence chatbots to trading algorithms and self-driving vehicles, robots, bots and algorithms are proliferating and p…

econ.TH2024

Intergenerational Preferences and Continuity: Reconciling Order and Topology

Asier Estevan, Roberto Maura, Oscar Valero

In this paper we focus our efforts on studying how a preorder and topology can be made compatible. Thus we provide a characterization of those that are continuous-compatible. Such…