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The adoption of containment measures to reduce the amplitude of the epidemic peak is a key aspect in tackling the rapid spread of an epidemic. Classical compartmental models must be modified and studied to correctly describe the effects of…

Populations and Evolution · Quantitative Biology 2021-05-18 G. Albi , L. Pareschi , M. Zanella

Process Mining (PM), initially developed for industrial and business contexts, has recently been applied to social systems, including legal ones. However, PM's efficacy in the legal domain is limited by the accessibility and quality of…

Computation and Language · Computer Science 2025-09-05 Matilde Contestabile , Chiara Ferrara , Alberto Giovannetti , Giovanni Parrillo , Andrea Vandin

We systematically investigate the effect heterogeneity of job search programmes for unemployed workers. To investigate possibly heterogeneous employment effects, we combine non-experimental causal empirical models with Lasso-type…

Econometrics · Economics 2020-10-13 Michael Knaus , Michael Lechner , Anthony Strittmatter

Credit risk management in Italy is characterized, in the period June 2008 to June 2012, by frequent (frequency=0.5 cycles per year) and intense (peak amplitude: mean=39.2 billion Euros, s.e.=2.83 billion Euros) quarterly contractions and…

Risk Management · Quantitative Finance 2013-07-10 Stefano Olgiati , Alessandro Danovi

We present a new model for reliability analysis that is able to distinguish the latent internal vulnerability state of the equipment from the vulnerability caused by temporary external sources. Consider a wind farm where each turbine is…

Applications · Statistics 2016-02-01 Ramin Moghaddass , Cynthia Rudin

The roll calls of the Italian Parliament in the XVI legislature are studied by employing multidimensional scaling, hierarchical clustering, and network analysis. In order to detect changes in voting behavior, the roll calls have been…

Social and Information Networks · Computer Science 2015-08-07 A. Amelio , C. Pizzuti

We empirically investigate the distributional effects of inflation on workers' unemployment tail risks using instrumental variable quantile regression. We find that supply-driven inflation disproportionately raises unemployment tail risks…

General Economics · Economics 2025-05-12 Hie Joo Ahn , Lam Nguyen

We analyse tourism behaviour of Italian residents in the period covering the 2008 Great Recession. Using the Trips of Italian Residents in Italy and Abroad quarterly survey, carried out by the Italian National Institute of Statistics, we…

Methodology · Statistics 2020-07-31 Chiara Bocci , Laura Grassini , Emilia Rocco

We study how governments promote social welfare through the design of contracting environments. We model the regulation of contracting as default delegation: the government chooses a delegation set of contract terms it is willing to…

Theoretical Economics · Economics 2022-05-17 Zoë Hitzig , Benjamin Niswonger

Electricity systems are key to transforming today's society into a carbon-free economy. Long-term electricity market mechanisms, including auctions, support schemes, and other policy instruments, are critical in shaping the electricity…

Machine Learning · Computer Science 2025-12-22 Javier Gonzalez-Ruiz , Carlos Rodriguez-Pardo , Iacopo Savelli , Alice Di Bella , Massimo Tavoni

Okun's law for the biggest developed countries is re-estimated using the most recent data on real GDP per capita and the rate of unemployment. Our results show that the change in unemployment rate can be predicted with a high accuracy. The…

General Finance · Quantitative Finance 2011-09-21 Ivan O. Kitov

Taking the European Central Bank unconventional policies as a reference, we suggest a class of Multiplicative Error Models (MEM) taylored to analyze the impact such policies have on stock market volatility. The new set of models, called MEM…

Statistical Finance · Quantitative Finance 2021-03-26 Demetrio Lacava , Giampiero M. Gallo , Edoardo Otranto

This paper reports on a two-tiered experiment designed to separately identify the selection and effort margins of pay-for-performance (P4P). At the recruitment stage, teacher labor markets were randomly assigned to a 'pay-for-percentile' or…

General Economics · Economics 2021-02-02 Clare Leaver , Owen Ozier , Pieter Serneels , Andrew Zeitlin

This paper estimates the effects of non-pharmaceutical interventions - mainly, the lockdown - on the COVID-19 mortality rate for the case of Italy, the first Western country to impose a national shelter-in-place order. We use a new…

Econometrics · Economics 2021-01-29 Roy Cerqueti , Raffaella Coppier , Alessandro Girardi , Marco Ventura

Large language model post-training relies on reinforcement learning to improve model capability and alignment quality. However, the off-policy training paradigm introduces distribution shift, which often pushes the policy beyond the trust…

Machine Learning · Computer Science 2026-04-24 Zhenpeng Su , Leiyu Pan , Minxuan Lv , Tiehua Mei , Zijia Lin , Yuntao Li , Wenping Hu , Ruiming Tang , Kun Gai , Guorui Zhou

We show that iterative deployment of large language models (LLMs), each fine-tuned on data carefully curated by users from the previous models' deployment, can significantly change the properties of the resultant models. By testing this…

Artificial Intelligence · Computer Science 2026-01-01 Augusto B. Corrêa , Yoav Gelberg , Luckeciano C. Melo , Ilia Shumailov , André G. Pereira , Yarin Gal

This paper considers dynamic moral hazard settings, in which the consequences of the agent's actions are not precisely understood. In a new continuous-time moral hazard model with drift ambiguity, the agent's unobservable action translates…

General Economics · Economics 2021-10-29 Martin Dumav

We develop a labor demand model that encompasses pre-match hiring cost arising from tight labor markets. Through the lens of the model, we study the effect of labor market tightness on firms' labor demand by applying novel shift-share…

General Economics · Economics 2026-04-10 Mario Bossler , Martin Popp

In an era of rapid technological advancements and macroeconomic shifts, worker reallocation is necessary, yet responses to labor market shocks remain sluggish, making it crucial to identify bottlenecks in occupational transitions to…

General Economics · Economics 2024-11-18 Max Sina Knicker , Karl Naumann-Woleske , Michael Benzaquen

Labor productivity in Turkey, Spain, Belgium, Austria, Switzerland, and New Zealand has been analyzed and modeled. These counties extend the previously analyzed set of the US, UK, Japan, France, Italy, and Canada. Modelling is based on the…

General Finance · Quantitative Finance 2010-01-28 Ivan O. Kitov