This paper focuses on the extraction of volatility of financial returns. The volatility process is modeled as a superposition of two autoregressive processes which represent the more persistent factor and the quickly mean-reverting factor. As the volatility is not observable, the logarithm of...

Fair representation of voters in a committee representing different voters' groups is being broadly discussed during last few years. Assuming we know what the fair representation is, there exists a problem of optimal quota: given a fair distribution of voting weights, how to set up voting rule...

This article formalises the idea of money-metric production frontiers, which we propose as a general framework for nonparametric evaluation of economic efficiency. As we show in our methodological discussion, this improves the flexibility and economic interpretation of our model. The empirical...

We examine a symmetric two-district setting with spillovers of local public spending where a spill-in from the foreign spending is not a substitute, but a complement to domestic spending. Specifically, we assume production of two district-specific public goods out of two complementary...

Three original microeconomic models of an externality market are described: (1) model of the marketable permits for exhalations emission, (2) model of optimal financial satisfaction of a damage caused by a negative externality in the economy with agents maximizing probability of their survival...

The aim of this paper is to propose a methodology to estimate loss given default (LGD) and apply it to a set of micro-data of loans to SME and corporations of an anonymous commercial bank from Central Europe. LGD estimates are important inputs in the pricing of credit risk and the measurement of...

This article presents the results of stress tests of the Czech banking sector conducted using models of credit risk and credit growth broken down by sector. The use of these models enables the stress tests to be linked to the CNB's official quarterly macroeconomic forecast. In addition, the...

We will investigate valuation of derivatives with payoff defined as a nonlinear though close to linear function of tradable underlying assets. Derivatives involving Libor or swap rates in arrears, i.e. rates paid in a wrong time, are a typical example. It is generally tempting to replace the...

Credit contracting between a lender with a market power and a small start-up entrepreneur may lead to a rejection of projects whose expected benefits are higher than their total costs when an adverse selection is present. This inefficiency may be eliminated by a government support in the form of...