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Estimation of Bias and Variance of Sample Median by Jacknife and Bootstrap Methods
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
In the paper the estimation of sample median bias and variance by jackknife
and bootstrap methods are considered. Monte Carlo analysis of properties of estimators is
presented (mean of bias and mean of variance for some ...
Analysis of Linear Regression Model at Divided System Matrix
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
In this study problems connected with the detection of influential observations
are investigated in the linear regression model using the least squares estimation of structural
parameters. This issue has been presented ...
Jackknife Forecasts of Time Series
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
In the paper we present the examples of forecasts of time series with seasonal
fluctuations. Based on the jackknife method we estimate variances of seasonal factors and
the MSE of prediction. Jackknife method has been ...
Introduction
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
Multiple Additive Regression Trees (MART) and their Application
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
Multiple additive regression trees MART is a methodology for trying to solve
prediction problems in regression and classification. It’s one of the boosting methods. It
was introduced by J. H. Friedman (1999a). Besides ...
On the Application of Classification Trees to Analyze Customer Loyalty and Satisfaction
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
It became more important to recognize customer expectations and to oiler
product properties, which convince customer to buy the analyzed product.
In customer loyalty and satisfaction analysis methods, classification trees ...
GARCH Models of Time Series on DAM
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
In this paper an analysis of the time series on the Day Ahead Market (DAM)
of the Polish Power Exchange is presented. In this analysis Generalized Autoregressive
Conditional Heteroscedasticity (GARCH) models are used to ...
Multiple Endpoints
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
In ANOVA we are mainly based on inter-treatment comparisons. Another
common problems arising in biometric studies (especially in biomedical studies) is that of
comparing two groups of patients (treatment and a control ...
Methods of Classification Error Decompositions and their Properties
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
The idea of error decomposition originates in regression where squared loss
function is applied. More recently, several authors have proposed corresponding decompositions
for classification problem, where 0-1 loss is ...
Joint Monitoring of the Mean, Dispersion and Asymmetry in Process Control
(Wydawnictwo Uniwersytetu Łódzkiego, 2007)
In this paper the quadratic form of sample mean, sample variance and sample
asymmetry is considered. This quadratic form can be used for testing hypothesis on the
expected value, variance and asymmetry of observed variable. ...