Now showing items 1-20 of 28

    • 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 ...
    • 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 ...
    • 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 ...
    • Samuel Dickstein (1851–1939) 

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

      Domański, Czesław (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
    • Introduction 

      Domański, Czesław; Kupis-Fijałkowska, Aleksandra (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
    • 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 ...
    • 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 ...
    • The Significance of Prior Information in Bayesian Parametric Survival Models 

      Grzenda, Wioletta (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The Bayesian approach gives the possibility of using in the research additional information that is external to the sample. The primary objective of this paper is to analyse the impact of the prior information on 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 ...
    • 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 ...
    • The Influence of Choice of Methods of Checking on Total Quality Control Costs 

      Chmielińska, Magdalena (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Acceptance sampling is commonly used in factories, because it decreases the probability of giving defective batch to the customer. From two distinguished ways of acceptance sampling, more frequently in practice is used ...
    • Józef Kleczyński (1841–1900) 

      Domański, Czesław (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
    • 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 ...
    • 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 ...
    • Construction of E–Optimal Spring Balance Weighing Designs for Even Number of Objects 

      Ceranka, Bronisław; Graczyk, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The problem of the construction of spring balance weighing designs satisfying the criterion of E-optimality is discussed. The incidence matrices of partially incomplete block designs are used to construction of the regular ...