We consider von Neumann-Morgenstern stable sets in assignment games. In the symmetric case Shapley (1959) proved some necessary conditions of vNM stability. In this paper we generalize this result for any assignment game. We show that a V set of imputation is stable if and only if (i) is...

Factor analysis is often applied in empirical data analysis to explore data structures. Due to its theoretical construction, factor analysis is suitable for the study of linear relationships, and adequacy of a factor analysis solution is often assessed with linear correlation related measures....

Present low interest rates environment brings about numerous economic effects. Insurance companies are also strongly affected, since traditional insurance products often provide guaranteed returns to policyholders. As guaranteed returns are related to market interest rates, the question about...

A szerző a halandóság statisztikai előrejelzésére alkalmazható egyre népszerűbb eljárásokat Magyarországon elsőként egységes tárgyalásban, az általánosított korcsoport-időszak-kohorsz modellcsalád, mint új paradigma keretében mutatja be. Empirikus elemzés során öt...

This paper examines how gender equality influences difference in cognitive skills between genders. For closer examination of Guiso et al. (2008), restricting the sample to immigrant allows us to reduce the possibility of reverse causality. Key findings obtained through regression estimation are:...

Jede adaptive Analyse von domänenspezifischen Daten erfordert generische, weiterentwickelte und anpassbare Methoden. Eine mathematische Darstellung und Modellierung von domänenspezifischen Anforderungen hilft dabei, dieses Ziel zu erreichen. In der Analyse von Mitarbeiterfähigkeiten und in...

A felsőoktatási intézmények rangsorolása a jelentkezők preferenciái alapján alkalmas lehet számos mérési probléma - például a szempontok önkényes súlyozása - okozta torzítások elkerülésére. Azon feltevés alapján, hogy egy felvételiző pontosan akkor preferál egy...

Social dilemmas, in particular the prisoners' dilemma, are represented as congestion games, and within this framework soft correlated equilibria as introduced by Forgó F. (2010, A generalization of correlated equilibrium: A new protocol. Mathematical Social Sciences 60:186-190) is used to...

Return guarantee constitutes a key ingredient of classical life insurance premium calculation. In the current low interest rate environment insurers face increasingly strong financial incentives to reduce guaranteed returns embedded in life insurance contracts. However, return guarantee lowering...

This paper examines how gender equality influences difference in cognitive skills between genders. For closer examination of Guiso et al. (2008), restricting the sample to immigrant allows us to reduce the possibility of reverse causality. Key findings obtained through regression estimation are:...

With the latest development in computer science, multivariate data analysis methods became increasingly popular among economists. Pattern recognition in complex economic data and empirical model construction can be more straightforward with proper application of modern softwares. However,...

In this paper we analyze criminal deterrence in the presence of specific psychic costs of punishments. We consider a dynamic model with three players, analyzing the choices of a representative lawmaker, potential criminal and judge. In our setting the lawmaker decides whether to introduce a...

A helyesen alkalmazott többváltozós adatelemzési módszerekkel akár korábban nem ismert, érdekes szakmai összefüggések is felfedezhetők. A többváltozós adatelemzés tanulmányozásánál az elméleti (gyakran matematikai) és a gyakorlati számítási tudnivalók megismerése...

We consider linearly weighted versions of the least core and the (pre)nucleolus and investigate the reduction possibilities in their computation. We slightly extend some well-known related results and establish their counterparts by using the dual game. Our main results imply, for example, that...

Can neural networks learn to select an alternative based on a systematic aggregation of convicting individual preferences (i.e. a 'voting rule')? And if so, which voting rule best describes their behavior? We show that a prominent neural network can be trained to respect two fundamental...

We consider a situation in which agents have mutual claims on each other, summarized in a liability matrix. Agents' assets might be insufficient to satisfy their liabilities leading to defaults. In case of default, bankruptcy rules are used to specify the way agents are going to be rationed. A...

A könyv a 2003-as első kiadás javított és némileg bővített változata, ami átfogó képet igyekszik adni az élet­ biztosítósok céljáról és működéséről, beleértve a díj- és tartalékkalkulációt lehetővé tévő hagyományos matematikai megfontolásokat, összefüggéseket.

A tanulmány az Acta Oeconomica, 2016. évi 1. számában publikált CGEMini 5-szektoros számszerűsített általános egyensúlyi (CGE-) modell GAMS-programjának a cikk szerkezetéhez történt igazításáról, a modell Excel-es változatának kifejlesztéséről számol be, valamint...

Bilingual Education (BE) was introduced to Sri Lankan education system in 2001. BE refers to an educational programme in which both native language and a second language are taught as subject matter and used as media of instruction while teaching non language subjects. The research conducted by...

We look at the effect of capital rules on a banking system that is connected through correlated credit exposures and interbank lending. The rules, which combine individual bank characteristics and interconnectivity measures of interbank lending, are to minimize a measure of system-wide losses....

The paper attempts to develop a suitable accessibility index for networks where each link has a value such that a smaller number is preferred like distance, cost, or travel time. A measure called distance sum is characterized by three independent properties: anonymity, an appropriately chosen...

We examine assignment games, wherematched pairs of firms and workers create some monetary value to distribute among themselves and the agents aim to maximize their payoff. In the majority of this literature, externalities - in the sense that a pair’s value depends on the pairing of the others...

When I started writing this paper, I thought I would only be writing about the parallel between the mathematical theory of inventory and production – as a familiar model of operations research – and liquidity management. And then during the writing process, predictably enough I must say, the...

Amikor ezt a dolgozatot elkezdtem, még arra gondoltam, hogy csak az operációkutatás közismert modellje, a raktárkészletezés matematikai elmélete és a likviditáskezelés közötti párhuzamról fogok írni. A dolgozat írása közben törtek ki a Buda-Cash és a Quaestor körüli, azt...

We present a general model to find the best allocation of a limited amount of supplements (extra minutes added to a timetable in order to reduce delays) on a set of interfering railway lines. By the best allocation, we mean the solution under which the weighted sum of expected delays is minimal....

Conditional Value-at-Risk (equivalent to the Expected Shortfall, Tail Value-at-Risk and Tail Conditional Expectation in the case of continuous probability distributions) is an increasingly popular risk measure in the fields of actuarial science, banking and finance, and arguably a more suitable...

The paper reviews some axioms of additivity concerning ranking methods used for generalized tournaments with possible missing values and multiple comparisons. It is shown that one of the most natural properties, called consistency, has strong links to independence of irrelevant comparisons, an...

A new axiomatization of the Nash equilibrium correspondence for n-person games based on independence of irrelevant strategies is given. Using a flexible general model, it is proved that the Nash equilibrium correspondence is the only solution to satisfy the axioms of non-emptiness, weak...

Krekó Béla a magyar közgazdasági oktatás megújításának kiemelkedő alakja, aki 1956 után és az 1960-as években a Marx Károly Közgazdaságtudományi Egyetemen (MKKE) élharcosa volt a matematika oktatás reformjának, az operációkutatási oktatás bevezetésének és a...

The paper uses paired comparison-based scoring procedures for ranking the participants of a Swiss system chess team tournament. We present the main challenges of ranking in Swiss system, the features of individual and team competitions as well as the failures of official lexicographical orders....