Now showing items 1-20 of 37

    • Introduction 

      Domański, Czesław; Mikulec, Artur (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
    • Financial Inclusion Indicators in Poland 

      Gatnar, Eugeniusz (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Financial inclusion refers to a state in which all working age adults have effective access to credit, savings, payments, and insurance from formal service providers. The aim of this paper is to introduce several indicators ...
    • On Estimation of a Quantity of Base Models with Parametric z and Permutation Tests 

      Stelmach, Jacek (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      One of the crucial problems in multiple-model approach of the regression is estimation of optimal number of base models. If the quantity is too low – it increases the prediction error whereas too high number of models ...
    • Sequence of Experimental Trials and Factorial Design of Experiment Realization Costs 

      Szerszunowicz, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Design of experiment is one of statistical methods of quality control which allows to appropriate preparation of the production process. Statistical design of experiment allows to set the level and to determine the ...
    • Stepwise Multiple Tests Procedures for Discrete Distributions 

      Parys, Dariusz (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      We presented some properties of new procedures of multiple hypotheses testing for discrete distributions. We choose the new procedure stepwise TWWk, based on Tarone, Westfall and Welfinger ideas. We compare this procedure ...
    • Modification of Hinov Method of Variable Selection for Multiple Cluster Structure Analysis 

      Korzeniewski, Jerzy (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The original HINoV method (Carmone et al., 1999 ) is not robust to the presence of correlated unimodal and uniform variables among noisy variables (e.g. Korzeniewski, 2012). Moreover, HINoV can be applied only to a single ...
    • Extracting Class Description from Support Vector Machines 

      Trzęsiok, Michał (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Support Vector Machines (SVMs) belong to the group of Data Mining and Machine Learning methods. SVMs are considered to be one of the best classification methods in terms of performance measure. The biggest disadvantage ...
    • Some Remarks on Feature Ranking Based Wrappers 

      Kubus, Mariusz (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      One of the approaches to feature selection in discrimination or regression is learning models using various feature subsets and evaluating these subsets, basing on model quality criterion (so called wrappers). Heuristic ...
    • Comparison of Accuracy of Affinity Propagation Method and Cluster Ensembles Based on Co-Occurrence Matrix 

      Rozmus, Dorota (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      High accuracy of results is a 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 ...
    • Influence of Unemployed Person Age on the Hazard and its Changes in Time 

      Bieszk-Stolorz, Beata; Markowicz, Iwona (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The aim of the article is to analyse the influence of unemployed person’s age on job seeking time. This influence can changes in time. That analysis is possible by using Cox nonproportional hazard model. We get the marks ...
    • Cluster Analysis – Symbolic vs. Classical Data 

      Wilk, Justyna; Pełka, Marcin (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Clustering problem is addressed in many contexts and disciplines. Although there are numerous studies on cluster analysis, there is a lack of a review to complete and systematize knowledge of research approach depending ...
    • On Some Simulation Procedures for Comparing Nonparametric Methods of Regression 

      Trzęsiok, Joanna (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Nonparametric methods of regression form a large group of varied and rapidly growing methods. In many situations we have a problem with comparing these methods in order to select one of them to solve the regression ...
    • Construction of the Measurement Scale for Consumer’s Attitudes in the Frame of One-Parametric Rasch Model 

      Tarka, Piotr (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The article discusses issues concerning the scale design based on one-parametric Rasch model in the context of consumers’ attitudes. The first part describes the specificity of the measurement in the light of Item Response ...
    • Influence of Inaccuracy Measurement On Middle- Operating Control Costs 

      Chmielińska, Magdalena (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Control charts are commonly used in plants to monitor the correctness of manufacturing process, due to their simplicity and explicitness of diagnosis. Qualification mistakes make that the signals, appear either with lag, ...
    • Insurance in Polish Small and Medium-Sized Enterprises – Survey Results for the Period of 2010-2012 

      Gajda, Damian; Jurkiewicz, Tomasz (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The sector of small and medium-sized enterprises (SME) is an important part of the insurance market. The growth of the economy and the changes occurring in Poland are the reasons for some changes in the behavior of ...
    • On MSE Estimation of Some Misspecified Predictor 

      Żądło, Tomasz (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      The problem of prediction of subpopulation (domain) total is studied as in Rao (2003). The problem is inspired by results obtained by Żądło (2012) who considered two predictors – empirical best linear unbiased predictor ...
    • Bayesian Spatial Quantile Regression 

      Trzpiot, Grażyna (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      In this paper we present a Bayesian spatial model quantile regression. We develop a spatial quantile regression model that does not assume normality and allows the covariates to affect the entire conditional distribution, ...
    • The Impact of the Methods of the Data Normalization on the Result of Linear Ordering 

      Dębkowska, Katarzyna; Jarocka, Marta (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      In taxonomy, various methods of the data normalization are used. They can significantly affect the result of the classification. This article presents the analysis of the impact of the methods of the data normalization ...
    • Probability of the Fuzzy Events and its Application in Some Economic Problems 

      Gerstenkorn, Tadeusz; Mańko, Jacek (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      In the paper we present some conceptions of probability of fuzzy events, especially of intuitionistic fuzzy events and discuss them in one perspective and show the utility and helpfulness of using the probability calculus ...
    • Odds Ratios in the Analysis of Contingency Table 

      Brzezińska, Justyna (Wydawnictwo Uniwersytetu Łódzkiego, 2013)
      Association and relationship is one of the most important tasks in statistical analysis. The main objective of the study is to examine odds ratios as a framework for understanding of contingency tables and log-linear ...