Personendaten aus der Verwaltung (Administrativdaten) haben sich in den letzten Jahrzehnten als wichtige Basis zur Evaluierung von Politikmaßnahmen erwiesen. Durch maschinelles Lernen können basierend auf diesen Daten auch Vorhersagen getroffen werden, die zur Lösung gesellschaftlicher...

Human antibiotic consumption is considered the main driver of antibiotic resistance. Reducing human antibiotic consumption without compromising health care quality poses one of the most important global health policy challenges. A crucial condition for designing effective policies is to identify...

Although social advertising has grown to be one of the major online advertising channels in recent years, its effectiveness is not been fully understood. In this study, we use data from a large-scale field experiment on a major social media platform (WeChat Moments) to investigate how the...

Most of the empirical evidence on social advertising effectiveness focuses on a single product at a time. As a result, little is known about how the effectiveness of social advertising varies across product categories or product characteristics. We therefore collaborated with a large online...

Social media not only is a new channel to obtain financial market information but also becomes the venue for investors to share and exchange investment ideas. We examine the performance consequences of providing monetary incentive to both existing and new amateur analysts on social media and its...

How should shareholders make dividend and recapitalization policies for a bank when there exists execution delay and fix costs on recapitalizations? What is the optimal time and magnitude of recapitalization if the magnitude of recapitalization is pre-determined at the time of...

We develop a retirement model with long-run income risk in which the wealth threshold for retirement is shown to be a function of the extent of the long-run income risk. By devising a new numerical algorithm, we solve the two-dimensional retirement problem. The two-dimensional retirement...

Banks' assets are opaque, and therefore, we model their true accounting asset values as partially observed variables. We derive a stochastic control model to optimize banks' dividend and recapitalization policies in this situation, and calibrate that to a sample of U.S. banks. By the calibrated...

Human antibiotic consumption is considered the main driver of antibiotic resistance. Reducing human antibiotic consumption without compromising health care quality poses one of the most important global health policy challenges. A crucial condition for designing effective policies is to identify...

Human antibiotic consumption is considered the main driver of antibiotic resistance. Reducing human antibiotic consumption without compromising health care quality poses one of the most important global health policy challenges. A crucial condition for designing effective policies is to identify...