Acta Universitatis Lodziensis. Folia Oeconomica: Recent submissions

Now showing items 1341-1360 of 4525

    • Robust Bayesian Prediction with Asymmetric Loss Function in Poisson Model of Insurance Risk 

      Boratyńska, Agata (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      In robust Bayesian analysis a prior is assumed to belong to a family instead of being specified exactly. The multiplicity of priors leads to a collection of Bayes actions. It is clearly essential to be able to recommend ...

    • Random Selection of Variables for Aggregated Tree-Based Models 

      Gatnar, Eugeniusz; Rozmus, Dorota (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      Tree-based models are popular a widely used because they are simple, flexible and powerful tools for classification. Unfortunately they are not stable classifiers. Significant improvement of the model stability and ...

    • Classification Tree Based on Receiver Operating Characteristic Curves 

      Rossa, Agnieszka (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      The paper deals with a new classification algorithm for discriminating between two populations. The proposed algorithm uses properties of a receiver operating characteristic function ROC(v) and a goodness-of-fit statistic ...

    • The Average Price Dynamics and Indexes of Price Dynamics - Discrete Time Stochastic Model 

      Białek, Jacek (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      In this paper we define two indexes of the average price dynamics in a discrete time stochastic model. Several properties of these indexes are proven, the other are presented by examples. In particular, it is shown that ...

    • Limit Property of The Compound Distribution Binomial-Generalized Two-Parameter Gamma 

      Gerstenkorn, Tadeusz (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      In 1920 M. Greenwood and G. U. Yule presented a compound distribution Poisson-two-parameter gamma and gave some interesting applications of this compounding. In 1973 H. Jakuszenkow published a compound of the Poisson ...

    • Matrix H and Its Applications in Economic and Tourist Research 

      Wagner, Wiesław (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      The paper characterizes and gives some basic properties of matrix H that is the operator of orthogonal projection on the space of columns of matrix X, which is the hat matrix in linear regression model. The author ...

    • Comparison of Selected Criteria for Determination of the Measure of Depth of an Observation in a Two-dimensional Sample 

      Kobylińska, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      The measure of observation depth in multidimensional samples, introduced into statistical practice by Tukey, has become a new tool for data analysis. It is a proposed method for determining multi-dimensional positional ...

    • Evaluation of the Degree of Integration among European Insurance Markets 

      Jurkiewicz, Tomasz; Wycinka, Ewa (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      The insurance internal market has existed since 1993 (enforced by the third life directive). Its’ main features are a common framework to allow insurers to operate throughout the EU and to establish and provide services ...

    • Methods of Assessing Efficiency of Bonus-Malus Systems 

      Szymańska, Anna ORCID (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      In civil responsibility transportation insurance the insurer assesses risk, inflicted by drivers, on the basis of observable risk factors such as e.g. driver’s sex and age, vehicle characteristics. However, there are ...

    • Multivariate Analysis of Regional Differences in the Higher Education System in Poland 

      Ordon, Agnieszka (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      This article discusses an attempt at analysis of regional diversity in Poland in 2001 with respect to the level of the higher educational system. The first part of this report deals with ranking provinces with respect ...

    • Skew-normal Distribution - Basic Properties and Areas of Applications 

      Jadamus-Hacura, Maria (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      The skew-normal is a class of distribution that includes the normal distribution as a special case. A systematic treatment of the skew-normal distribution has been given in Azzalini (1985, 1986); generalizations to the ...

    • The Characteristic of Theoretical Income Distributions and Their Application to the Analysis of Wage Distributions in Poland by Regions 

      Jędrzejczak, Alina (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      In the paper we compare the properties of theoretical income distributions from the point of view of their application to the analysis of wage distributions in Poland. Among them the lognormal and Dagum distributions ...

    • Multinomial Logit Model and Its Application in Labour Market Position Analysis of Individuals in Poland 

      Kucharski, Leszek; Kwiatkowski, Eugeniusz (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      In this paper we undertake an attempt to assess an impact which levels of education and vocational skills both have on the individuals’ position in the labor market. This position we define on the basis of probability ...

    • Proposal of New Cluster Analysis Algorithm 

      Korzeniewski, Jerzy (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      One of well-known groups of cluster analysis methods is the group of methods based on density estimation. In the paper we propose a new method of defining dusters which consists of two steps. In the first step we find ...

    • Clustering of European Countries with Respect to Food Consumption 

      Dudek, Hanna; Orłowski, Arkadiusz (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      Problem of clustering of European countries with respect to food consumption is considered. Data related to average yearly per capita consumption of 14 main categories of food products in 39 countries are collected and ...

    • Segmentation of Students According to Food Purchase Preferences 

      Cichocka, Izabela (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      This paper presents the usage of PCA in segmentation of students according to their food purchase preferences. The aim of this research was to select and describe segments of young people with their various food preferences ...

    • Static Hedging of Barier Options of Type Down-and-Out Calls 

      Depta, Adam (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      The paper presents path-dependent options with a single barrier in terms of path-independent standard options. The key to providing this result is put-call symmetry, which is assumed to hold when the underlying first ...

    • Credit Swaps as Instruments Securing from the Risk 

      Szczukocka, Agata (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      The interest in the problem of credit risk has significantly increased within the last few dozen years. Scientific literature presents a lot of methods of the credit risk limitation whereas banks try, with various results, ...

    • Applications of VaR and CVaR Methods on Energy Market in Poland 

      Ganczarek, Alicja (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      This article presents downside risk measures such as: Value-at-Risk - VaR and Conditional Value-at-Risk - CVaR. We establish them with three of the known methods. The electric energy is an article of real tame, which we ...

    • O istocie spółki europejskiej 

      Duraj, Jan (Wydawnictwo Uniwersytetu Łódzkiego, 2006)
      European Company is new form firm’s and the possibilities of activity resulting from over national its character and of norms formulated by European Law of Partnership. European Company can come into being in result of ...