Przeglądaj Acta Universitatis Lodziensis. Folia Oeconomica nr 302(3)/2014 według tytułu
Wyświetlanie pozycji 1-20 z 27
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APPLICATION OF CHOSEN NORMALIZATION METHODS IN THE PROCESS OF CONSTRUCTION OF SYNTHETIC MASURURE IN INDIRECT CONSUMPTION RESEARCH
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)The main purpose of this paper is to find the most effective method for the normalization of a final set of diagnostic variables for indirect consumption research with the use of synthetic consumption measures. The chosen ... -
BIAVERAGE AND MULIMODALITY IN INVESTIGATING DISTRIBUTION OF ELECTRICITY PRICES
; Pekasiewicz, Dorota
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)
In the paper chosen statistical methods concerning analysis of random variable distributions are presented. Investigating modality of distribution is one of the most interesting and important stages in random variable ... -
DISCRIMINANT STEPWISE PROCEDURE
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)Stepwise procedure is now probably the most popular tool for automatic feature selection. In the most cases it represents model selection approach which evaluates various feature subsets (so called wrapper). In fact it is ... -
DISTANCE MEASURES IN AGGREGATING PREFERENCE DATA
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)The aim of this paper is to present aggregation methods of individual preferences scores by means of distance measures. Three groups of distance measures are discussed: measures which use preference distributions for all ... -
DYNAMIC CLASSIFICATION OF GEOGRAPHIC POINTS ON GOOGLE MAPS
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)Classification of geographical points on Google maps is an interesting example of the use of cluster analysis algorithm in which the final number of clusters is obtained not only by presuppositions and the algorithm used, ... -
DYNAMICS OF THE REAL ESTATE PRICES IN THE LIGHT OF THE CATASTROPHE THEORY
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)The paper describes application of catastrophe theory for analysis of trends of real estate prices inPoznan. It turns out that the evolution of the real estate market is comprised of two main processes: long-term evolution ... -
GARCH CLASS MODELS PERFORMANCE IN CONTEXT OF HIGH MARKET VOLATILITY
Małecka, Marta (Wydawnictwo Uniwersytetu Łódzkiego, 2014)
In the presented paper GARCH class models were considered for describing and forecasting market volatility in context of the economic crisis. The sample composition was designed to emphasize models performance in two groups ... -
Julian Perkal – pioneer of new statistical methods in science
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)The article describes the life and scientific achievments of Julian Perkal. -
THE MEASUREMENT OF THE ECONOMIC DISTANCE ON THE BASIS OF SYMBOLIC DATA
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)The economic distance defines a dissimilarity level between objects functioning in the economic space. It is one of the most important issues of spatial econometrics. However its measurement is difficult due to the definition, ... -
Memories of Professor Ryszard Zieliński
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)The article presents memories of Ryszard Zieliński. -
Memories of Professor Witold Klonecki
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)The article presents memories of Witold Klonecki. -
THE METHODS OF FORECASTING OF CHANGES OF MUNICIPAL WASTE PRODUCTION IN CASE OF CITIES
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)Waste management is currently one of the most important problems of the functioning of densely populated areas, important in the case of cities. The main problem of waste management is to break a simple correlation between ... -
ON GENERATING MULTIVARIATE SAMPLES WITH ARCHIMEDEAN COPULAS
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)Archimedean copulas are one of the most known classes of copulas. They allow modeling the dependencies between variables with small number of parameters. This paper presents a method designated to generate multivariate ... -
ON NONRESPONSE CAUSALITY TESTING IN ROTATING PANEL DESIGNS UNDER THE COX MODEL
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)High survey nonresponse in unemployment duration studies may have a strong effect on inference if exit from unemployment affects the chance of nonresponse (nonresponse causality). In rotational studies large part of the ... -
ON THE BOOTSTRAP METHOD OF ESTIMATION OF RESPONSE SURFACE FUNCTION
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)Nowadays, in many fields of science it is necessary to carry out miscellaneous analyses using classical statistical methods, which usually have correct assumptions. These assumptions in the research realities cannot always ... -
ON THE METHOD OF COMPARING STRUCTURES BASED ON THE DATA IN THE CONTINGENCY TABLES
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)Comparison of populations is one of the most important problems in statistics. The most common comparisons apply to two populations, but comparisons of k populations, where k 2 are also carried out. Parametric methods ... -
ON THE RESAMPLING METHOD IN SAMPLE MEDIAN ESTIMATION
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)Bootstrap is one of the resampling statistical methods. This method was proposed by B. Efron. The main idea of bootstrap is to treat the original sample of values as a stand-in for the population and to resample with ... -
ON THE SELECTED METHODS FOR EVALUATING CLASSIFICATION MODELS
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)Traditional measures for assessing the performance of classification models for binary outcomes are the ROC curve and the area under the ROC curve (AUC).Reclassification tables (Cook, 2008), net reclassification improvement ... -
A PRACTICAL AND SIMPLE MANNER OF EVALUATION OF THE EFFICACY OF IMPROVEMENT METHOD CASE IN CASE OF UNFAVOURABLE ECONOMIC SITUATIONS ON THE BASIS OF FUZZY SET THEORY
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)In the paper there is proposed a simple mathematical model following on from the considerations included in the theoretical papers concerning the evaluation of medical and other therapies on the ground of fuzzy sets based ... -
PROFESSORS: KAZIMIERZ ZAJĄC ORAZ ANDRZEJ IWASIEWICZ – KRAKOW’S EMINENT STATISTICIANS
(Wydawnictwo Uniwersytetu Łódzkiego, 2014)The article presents memories of Kazimierz Zając and Andrzej Iwasiewicz.