Wyświetlanie pozycji 14-30 z 30

    • Internal Cluster Quality Indexes for Classification of Symbolic Data 

      Dudek, Andrzej (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      This paper describes main classification methods used for symbolic data (e.g. data in form of: single quantitative value, categorical value, interval, multivalued variable, multivaliued variable with weights) presents ...
    • Introduction 

      Domański, Czesław; Witaszczyk, Anna (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
    • Knowledge Indicators for Polish Provinces 

      Pawluczuk, Andrzej (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      Knowledge-based economy (KBE) has been recently the subject of many analyses and academic research. Methods of its assessment have been worked out by a few international institutions such as the World Bank. Their experts ...
    • Kruskal-Wallis Test in Multiple Comparisons 

      Parys, Dariusz (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      In this paper we show that the Kruskal-Wallis test can be transform to quadratic form among the Mann-Whitney or Kendal τ au concordance measures between pairs of treatments. A multiple comparisons procedure based on patterns ...
    • Limit Property of a Compound of the Generalized Negative Binomial and Beta Distributions 

      Gerstenkorn, Tadeusz (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      In Central European Journal of Mathematics (CEJM) 2(4) 2004, 527-537 T. Gerstenkorn published a probability distribution as a result of compounding of the generalized negative binominal distribution with the generalized ...
    • Macroeconomic Risk of Investment Portfolios at the Warsaw Stock Exchange 

      Jaguś, Felicjan (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      The essay presents the attempt to examine selected macroeconomic risk factors of portfolio Investments in Polish capital market as well as to build investment portfolios sensitive to particular risk profiles. With this ...
    • Measures of Diversity and the Classification Error in the Multiple-model Approach 

      Gatnar, Eugeniusz (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      Multiple-model approach (model aggregation, model fusion) is most commonly used in classification and regression. In this approach K component (single) models C1(x), C1(x), … , CK(x) are combined into one global model ...
    • On Testing Linearity of Trend Function 

      Kończak, Grzegorz; Wywiał, Janusz (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      Testing the goodness of fit between a hypothetical trend function and its non-parametric variant will be considered. This problem was analysed e.g. by Domanski (1979, 1990), Wywiał (1990, 1995). Our result can be treated ...
    • On the Multivariate Test for Stability of the Population Proportions 

      Kończak, Grzegorz; Czogała, Maria (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      The paper investigates the problem of testing the hypothesis of the stability proportion for multiple attributes. It is assumed that two random samples of size n0 and n1, respectively an selected from the population. In ...
    • Optimum Chemical Balance Weighing Design with Correlated Errors Based on Bipartite and Ternary Designs 

      Ceranka, Bronisław; Graczyk, Małgorzata (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      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. It is assumed that the ...
    • Ordering the Spatial Units by the Non-standard Method at Various Standarization Transformations 

      Mantaj, Andrzej; Wagner, Wiesław (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      Applying various standardization transformations for the set of characteristics we receive various ordering of spatial units. In the paper for the purpose of ordering we used the nonstandard method in two variants: of the ...
    • Remarks on Classical Means for One and Many Samples 

      Wagner, Wiesław (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      In the paper there were given basic designations for one and many samples in reference to classical means. In the next there were introduced the optimization criteria defining classical means for one sample, also for the ...
    • Selected Premium Estimation Methods in Automobile Liability Insurance 

      Szymańska, Anna ORCID (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      Correct insurance premiums estimation constitutes the basis for the insurance activity. Premiums should be estimated in a way that does not let the insurance company incur financial losses and prevents the insured from ...
    • Sequential Probability Ratio Test for Mean Based on Pseudo-Likelihood Function 

      Pekasiewicz, Dorota (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      Hypotheses about expected value of random variable can be verified by means of the parametric sequential probability ratio test in case of the known class of this variable's distribution. The problem with verification of ...
    • The Method of Risk Measurement in Case of Stochastic Definition of Net Present Value 

      Białek, Jacek ORCID (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      The Net Present Value (NPV) rule is a base of modern finance theory. The classical definition of NPV is based on unrealistic assumptions: it treats the discount rate as a deterministic and constant function. The above fact ...
    • The Wavelet Transform in Regression 

      Trzęsiok, Joanna (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      The wavelet transform was introduced in the 19S0's and it was developed as an alternative in tin short time Fourier transform. The wavelets theory is very popular in signal processing and pattern recognition and its ...
    • Using Artificial Neural Networks to Predict Stock Prices 

      Kozdraj, Tomasz (Wydawnictwo Uniwersytetu Łódzkiego, 2009)
      Artificial neural networks constitute one of the most developed conception of artificial intelligence. They are based on pragmatic mathematical theories adopted to tasks resolution. A wide range of their applications also ...