Machine learning for quantitative finance: fast derivative pricing,hedging and fitting

In this paper, we show how we can deploy machine learning techniques in the context of traditional quant problems. We illustrate that for many classical problems, we can arrive at speed-ups of several orders of magnitude by deploying machine learning techniques based on Gaussian process regression. The price we have to pay for this extra speed is some loss of accuracy. However, we show that this reduced accuracy is often well within reasonable limits and hence very acceptable from a practical point of view. The concrete examples concern fitting and estimation. In the fitting context, we fit sophisticated Greek profiles and summarize implied volatility surfaces. In the estimation context, we reduce computation times for the calculation of vanilla option values under advanced models, the pricing of American options and the pricing of exotic options under models beyond the Black–Scholes setting.     

WHO WANTS PATERNALISM?

Little is known about the demand side of paternalism. We investigate attitudes towards paternalism among Danish students. The main question is whether demand for paternalism is related to self‐control, either because people with self‐control problems seek commitment devices to overcome these problems, or because people with good self‐control want those who lack it to change their behaviours. We find no evidence linking self‐control to attitudes towards weak forms of paternalism (e.g., nudges or information about health consequences). But respondents with good self‐control are significantly more favourable towards strong paternalism (e.g., restricting choices or sin taxes) than those struggling with self‐control.     

Effects of local fiscal policy on firm profitability

For decades, scholars and policy-makers have been interested in how fiscal policy influences entrepreneurship. Until now, research has focused on fiscal policy at the federal or regional level and used macro-economic outcome measures. Considerably less attention was given to how municipal governments can influence economic outcomes at the micro level. The present study examines the effect of municipal taxes, spending and tax compliance costs on firm profitability within the Flemish hospitality industry. This is an interesting research setting, since Flemish municipalities have far-ranging fiscal autonomy which has resulted in a proliferation of local taxes, many of which are specific to the hospitality industry. The findings reveal that local taxes have a negative impact on firm profitability, while aggregate public spending has a positive influence. The tax effect is economically relevant and exceeds the public spending impact. Finally, we find no impact of compliance costs from local taxes.     

Diagnostic and lifetime hospital costs of patients suffering from wild-type transthyretin amyloid cardiomyopathy in Denmark

Abstract

Aims

Wild-type transthyretin amyloid cardiomyopathy (ATTRwt) is a fast progressing and fatal disease associated with substantial delays in diagnosis. Between the first symptoms and diagnosis, patients are frequently hospitalized, primarily with cardiac symptoms. After diagnosis, patients continue to experience frequent hospital admissions. The objective of this study was to estimate the Danish diagnostic and lifetime hospital costs associated with the treatment of patients with ATTRwt both before and after they are diagnosed.     

Offshoring and international competitiveness: antecedents of offshoring advanced tasks

During the past decade, offshoring has become an established business practice. Yet it is still more common to offshore less advanced tasks compared with offshoring more advanced tasks, i.e., tasks closer to the core activities of the firm. The latter is a new phenomenon which raises many new issues on the boundaries of the firm. More or less advanced tasks can be found within all activities, e.g., in sales and marketing where telesales is on the less advanced end of the scale while branding and identity building are on the advanced end of the scale. This article focuses on the antecedents of advanced offshoring, exploring what causes firms to offshore some of their more advanced tasks. Our findings indicate that while the lower cost of unskilled, labor-intensive processes is the main driver for firms that offshore less advanced tasks, the offshoring of advanced tasks is part of firms’ strategy to achieve international competitiveness through access to cross-border knowledge flows and foreign knowledge resources. Furthermore, offshoring of advanced manufacturing tasks seems to be more widespread and experience-based than the offshoring of advanced service tasks.     

Rational Partisan Theory: Evidence for Seven OECD Economies

According to the Rational Partisan Theory of business cycles ("RPT"), ex ante uncertainty about the outcome of elections will generate post-election output growth fluctuations. This paper employs vote prediction equations and opinion polls to compute election win probability estimates for 62 elections in seven OECD economies. The probability estimates are used to calibrate partisan intervention terms entered in output growth regressions. For the UK and, to some extent, Canada and Australia, our results are supportive of the RPT. For the US, the calibrated intervention terms are dominated by a partisan dummy variable turned on after each election.     

Financial Restraints in a Mature Welfare State--The Case of Denmark

The Scandinavian welfare states are mature in the sense of havinga high level of standards for public provisions of welfare servicesas well as a high replacement level for income transfers, especiallyfor low-income groups. In this welfare model, individuals havebasic rights to welfare services and social transfers independentlyof their ability to pay, their labour-market history, etc. Thefinancial viability of the model relies on a high tax burdenand a high level of labour-force participation for males andfemales. Evaluated on the basis of international comparisonsof income levels and inequality, the model has performed well.In a forward-looking perspective, however, the welfare modelfaces problems that may put the financial viability of the modelat risk. Two important challenges are demographic changes andthe so-called growth dilemma (increased demand for servicesand leisure). We discuss these issues using Denmark as an exampleand argue that while these two challenges may be of the sameorder of magnitude, it is easier to propose solutions to thedemographic challenges than to the growth dilemma which areconsistent with the basic principles of the welfare state. Footnotes ¹ E-mail addresses: tandersen{at}econ.au.dk; lhp{at}dreammodel.dk