Acta Universitatis Lodziensis. Folia Oeconomica: Ostatnio dodane
Wyświetlanie pozycji 1341-1360 z 4530
-
On the Distribution of Quadratic Form of Sample Mean and Variance
(Wydawnictwo Uniwersytetu Łódzkiego, 2006)The quadratic form of the sample mean and sample variance was considered. The sample is from normal distribution. The density function of the quadratic form has been derived. The quadratic form can be applied as the test ... -
Balanced Block Designs Leading to the Optimum Chemical Balance Weighing Design with Equal Correlations of Errors
(Wydawnictwo Uniwersytetu Łódzkiego, 2006)The paper is studying the estimation problem of individual weights of objects using the chemical balance weighing design under the restriction on the number times in which each object is weighed. We assume that errors ... -
Introduction
(Wydawnictwo Uniwersytetu Łódzkiego, 2006) -
An Influence of Classification Method on Efficiency of Modified Synthetic Estimator
(Wydawnictwo Uniwersytetu Łódzkiego, 2006)The problem of insufficient number of sample observations representing a given population domain of interest (small area) can be solved by applying such estimators, which will be able to combine sample information from ... -
Multivalued Stochastic Processes
(Wydawnictwo Uniwersytetu Łódzkiego, 2006)Multivalued random variables and stochastic processes can be use in integral geometry, mathematical economics or stochastic optimization. In the study of multivalued stochastic processes the some clue problem is the ... -
Robust Bayesian Prediction with Asymmetric Loss Function in Poisson Model of Insurance Risk
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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
(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 ...