Now showing items 1-20 of 28

    • Józef Kleczyński (1841–1900) 

      Domański, Czesław (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
    • Samuel Dickstein (1851–1939) 

      Domański, Czesław (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
    • Geometrical Presentation of Preferences by Using Profit Analysis and R Program 

      Zaborski, Artur; Pełka, Marcin (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      PROFIT is a kind of external vector analysis of preference mapping. It is a combination of multidimensional scaling and multiple regression analysis. PROFIT takes as input both a configuration of stimulus points and a ...
    • GARCH Process Application in Risk Valuation for WIG20 Index 

      Małecka, Marta (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The recent economic crisis of 2008/2009 boosted a discussion about effectiveness of popular methods of controlling risk in financial markets, with value-at-risk approach being a topical issue. The paper contrasted a GARCH ...
    • Men’s and Women’s Economic Activity in Poland 

      Bieszk-Stolorz, Beata; Markowicz, Iwona (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The aim of the article is to examine the impact of a job seeker’s gender on their economic activity and employment odds in Poland in 2010. The research tool was a logit model. The starting point for the analysis was the ...
    • Some Construction of Factorial Designs 

      Szerszunowicz, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Design of experiments methods are an important tool to improve production processes using statistical methods. Designing experiments allows to set factors of the production process as well as describe the influence of ...
    • The Application of the Tools of Spatial Statistics to Evaluation Regional Differentiation of Polish Agriculture 

      Kamińska, Agnieszka (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The article presents the application of the spatial autocorrelation analysis in evaluation of regional differentiation of agriculture in Poland. The study based on the selected data for the sixteen provinces from the ...
    • Some Remarks on the Data Imputation Using “missForest” Method 

      Misztal, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Missing data are quite common in practical applications of statistical methods and imputation is a general statistical method for the analysis of incomplete data sets. Stekhoven and Bühlmann (2012) proposed an iterative ...
    • The Role and Importance of an Actuary in the Insurance 

      Zapart, Tomasz (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Actuary on the basis of the tasks arising from the audit process of an insurance undertaking is obliged to submit their opinion on all activities of that establishment which could have an impact on the financial position ...
    • A Content Analysis of the Representation of the European Uprising in Turkish News Media 

      Yay, Meral; Özdamar, Elif Özge; Arsan, Esra (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The study covers content analysis of the european uprising news represented in Turkish Media . 12 mainstream Turkish newspapers has been analysed between the dates of 1th – 30th July 2011. Correspodence analysis and ...
    • Statistical Time Series Analysis of Macro Indicators of Educational, Professional and Family Careers of Women in Poland 

      Raczkiewicz, Dorota (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Educational, professional and family careers can promote each other, but more often they compete with each other, especially in a case of women. These careers change over time. This article aims to analyze changes over ...
    • Introduction 

      Domański, Czesław; Kupis-Fijałkowska, Aleksandra (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
    • Model Selection Methods in Log-Linear Analysis 

      Brzezińska, Justyna (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The main objective of the study is to examine model selection methods in loglinear analysis. Log-linear analysis is a tool for independence analysis of qualitative data. Cell counts are Poisson distributed and all variables ...
    • Comparison of Accuracy of Spectral Clustering and Cluster Ensembles based on Co-Occurrence Matrix 

      Rozmus, Dorota (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      High accuracy of the results is very important task in any grouping problem (clustering). It determines effectiveness of the decisions based on them. Therefore in the literature there are proposed methods and solutions ...
    • Modification of Talavera Method of Variable Selection in Cluster Analysis 

      Korzeniewski, Jerzy (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Talavera has proposed a method of variable selection in cluster analysis for data sets in which only variables measured on nominal scale are present. He examined the method on a couple of data sets basing his assessment ...
    • On Model Selection in Some Regularized Linear Regression Methods 

      Kubus, Mariusz (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      A dynamic development of various regularization formulas in linear models has been observed recently. Penalizing the values of coefficients affects decreasing of the variance (shrinking coefficients to zero) and feature ...
    • Testing Differences between Populations with Eigenvectors 

      Stelmach, Jacek (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Testing differences between multivariate populations is one of a crucial problems in statistical investigations. The most known – MANOVA tests being parametric ones need to fulfill the assumptions about the conformity ...
    • Bayesian Statistical Tests for Proportion for Independent and Dependent Sampling 

      Pekasiewicz, Dorota (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      As a result of the use of the Bayesian statistical tests, the decision of the acceptance of the hypothesis for which the posterior risk is lower, is made. The risk depends on the prior parameter’s distribution, the loss ...
    • Some Remarks on the Symmetry Kernel Test 

      Baszczyńska, Aleksandra (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The paper presents chosen statistical tests used to verify the hypothesis of the symmetry of random variable’s distribution. Detailed analysis of the symmetry kernel test is made. The properties of the regarded symmetry ...
    • Classification of Large Data Sets. Comparison of Performance of Chosen Algorithms 

      Dudek, Andrzej (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Researchers analyzing large (> 100,000 objects) data sets with the methods of cluster analysis often face the problem of computational complexity of algorithms, that sometimes makes it impossible to analyze in an acceptable ...