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The scale of the UK government's response to the Covid-19 crisis after the first lockdown in March 2020 was unprecedented. For the business sector, two financing schemes were particularly relevant: the Coronavirus Business Interruption Loan Scheme (CBILS) and the Bounce Back Loan Scheme (BBLS). Both were designed to support the capitalization of businesses through this difficult trading period. In this paper, we use data covering the first two quarters of the Covid-19 crisis to explore the dynamics of small and medium-sized enterprise (SME) financing and in particular the role of government support schemes. Our findings show that 92.1% of all debt funds provided in this period were backed by the UK government, which compares to less than 5% under normal circumstances. We find that the demand, supply and government share of SME lending increased from Covid-19 quarter 1 (April–June 2020) to quarter 2 (July–September 2020), that micro and small businesses had the highest demand for loans, and that better-performing firms were more likely to receive loans. Further, in a world where more loan requests than ever were granted, the government share of this pool of loans had a different risk profile than the small pool of non-government-backed loans.

In 2016 the British government acknowledged the importance of reducing antimicrobial prescriptions in order to avoid the long-term harmful effects of over-prescription. Prescription needs are highly dependent on factors that have a spatio-temporal component, such as the presence of a bacterial outbreak and the population density. In this context, density-based clustering algorithms are flexible tools to analyse data by searching for group structures. The case of Scotland presents an additional challenge due to the diversity of population densities under the area of study. We present here a spatio-temporal clustering approach for highlighting the behaviour of general practitioners (GPs) in Scotland. Particularly, we consider the density-based spatial clustering of applications with noise algorithm (DBSCAN) due to its ability to include both spatial and temporal data, as well as its flexibility to be extended with further variables. We extend this approach into two directions. For the temporal analysis, we use dynamic time warping to measure the dissimilarity between warped and shifted time series. For the spatial component, we introduce a new way of weighting spatial distances with continuous weights derived from a KDE-based process. This makes our approach suitable for cases involving spatial clusters with differing densities, which is a well-known issue for the original DBSCAN. We show an improved performance compared to both the latter and the popular k-means algorithm on simulated, as well as empirical data, presenting evidence for the ability to cluster more elements correctly and deliver actionable insights., Comment: 27 pages, 11 figures, 3 tables

This article studies the effects of incorporating the interdependence among London small business defaults into a risk analysis framework using the data just before the financial crisis. We propose an extension from standard scoring models to take into account the spatial dimensions and the demographic characteristics of small and medium-sized enterprises (SMEs), such as legal form, industry sector, and number of employees. We estimate spatial probit models using different distance matrices based only on the spatial location or on an interaction between spatial locations and demographic characteristics. We find that the interdependence or contagion component defined on spatial and demographic characteristics is significant and that it improves the ability to predict defaults of non–start-ups in London. Furthermore, including contagion effects among SMEs alters the parameter estimates of risk determinants. The approach can be extended to other risk analysis applications where spatial risk may incorporate correlation based on other aspects.

This paper develops a method for modelling binary response data in a regression model with highly unbalanced class sizes. When the class sizes are highly unbalanced and the minority class represents a rare event, conventional regression analysis, i.e. logistic regression models, could underestimate the probability of the rare event. To overcome this drawback, we introduce a flexible skewed link function based on the quantile function of the generalized extreme value (GEV) distribution in a generalized additive model (GAM). The proposed model is known as generalized extreme value additive (GEVA) regression model, and a modified version of the local scoring algorithm is suggested to estimate it. We apply the proposed model to a dataset on Italian small and medium enterprises (SMEs) to estimate the default probability of SMEs. Our proposal performs better than the logistic (linear or additive) model in terms of predictive accuracy.

The goal of this paper is to provide a cohesive description and a critical comparison of the main estimators proposed in the literature for spatial binary choice models. The properties of such estimators are investigated using a theoretical and simulation study. To the authors' knowledge, this is the first paper that provides a comprehensive Monte Carlo study of the estimators' properties. This simulation study shows that the Gibbs estimator Le Sage (2000) performs best for low spatial autocorrelation, while the Recursive Importance Sampler Beron & Vijverberg (2004) performs best for high spatial autocorrelation. The same results are obtained by increasing the sample size. Finally, the linearized General Method of Moments estimator Klier & McMillen (2008) is the fastest algorithm that provides accurate estimates for low spatial autocorrelation and large sample size.

To represent the high concentration of recovery rates at the boundaries, we propose to consider the recovery rate as a mixed random variable, obtained as the mixture of a Bernoulli random variable and a beta random variable. We suggest to estimate the mixture weights and the Bernoulli parameter by two logistic regression models. For the recovery rates belonging to the interval 0,1, we model, jointly, the mean and the dispersion by using two link functions, so we propose the joint beta regression model that accommodates skewness and heteroscedastic errors. This methodological proposal is applied to a comprehensive survey on loan recovery process of Italian banks. In the regression model, we include some macroeconomic variables because they are relevant to explain the recovery rate and allow to estimate it in downturn conditions, as Basel II requires. Copyright © 2012 John Wiley & Sons, Ltd.