Tomasz Żądło (in TeX: \.{Z}\k{a}d{\l}o))        

Department of Statistics, Econometrics and Mathematics

University of Economics in Katowice

50, 1 Maja Street

40-287 Katowice, Poland

Google Scholar profile

ResearchGate profile

https://orcid.org/0000-0003-0638-0748

e-mail

Research interests:

small area estimation, survey sampling, longitudinal data, bootstrap, mixed models

Employment:

• Associate Professor, University of Economics in Katowice (Department of Statistics, Econometrics and Mathematics)

Education:

• Habilitation, University of Economics in Katowice (Department of Statistics), Katowice 2016

• PhD, University of Economics in Katowice (Department of Statistics), Katowice 2006

• MSc, University of Economics in Katowice (Faculty of Economics, Major: Finance and Investments), Katowice 2001

Professional societies and bodies membership:

• member of Steering Committee of The Baltic-Nordic-Ukrainian Network on Survey Statistics (since 2024)

• member of Scientific Statistical Council 2020-2024 (advisory and opinion-making body for statistical research methodology supporting the President of Statistics Poland)

• elected member of International Statistical Institute (since 2007)

• country representative of International Association of Survey Statisticians (since 2007)

• member of International Association of Survey Statisticians (since 1999)

• member of Polish Statistical Society (since 2002)

Editorial responsibilities:

• Associate Editor “Mathematical Population Studies” (2014-2018) (JCR) 

• Member of Editorial Board “American Journal of Theoretical and Applied Statistics” (since 2013)

• Member of Editorial Board “Studia Ekonomiczne. Zeszyty Naukowe Uniwersytetu Ekonomicznego w Katowicach” (since 2016)

• Member of Editorial Board “Studia Ekonomiczne. Zeszyty Naukowe Uniwersytetu Ekonomicznego w Katowicach” at the Faculty of Management (2012-2014),

Selected papers (JCR):

• Wolny-Dominiak A., Żądło T. (2021), The Measures of Accuracy of Claim Frequency Credibility Predictor, Sustainability, 13(21), 11959. [LINK]

• Żądło T. (2020), On accuracy estimation using parametric bootstrap in small area prediction problems, Journal of Official Statistics, 36(2), 435-458. [LINK]

• Wolny-Dominiak A., Żądło T. (2020), On bootstrap estimators of some prediction accuracy measures of loss reserves in a non-life insurance company, Communications in Statistics – Simulation and Computation, available online. [LINK]

• Chwila A., Żądło T. (2019), On properties of empirical best predictors, Communications in Statistics – Simulation and Computation, available online. [LINK]

• Żadło T. (2017), On prediction of population and subpopulation characteristics for future periods, Communications in Statistics – Simulation and Computation, 46 (10), 8086-8104. [LINK]

• Żądło T. (2015) On longitudinal moving average model for prediction of subpopulation total, Statistical Papers, 56 (3), 749-771. [LINK]

• Żądło T. (2015) On prediction for correlated domains in longitudinal surveys, Communications in Statistics – Theory and Methods, 44 (4), 683-697.  [LINK]

• Żądło T. (2014), On the Prediction of the Subpopulation Total Based on Spatially Correlated Longitudinal Data, Mathematical Population Studies, 21, 1, 30-44. [LINK]

• Żądło T. (2009), On MSE of EBLUP, Statistical Papers, 50, 101-118. [LINK]

• Żądło T. (2006), On prediction of total value in incompletely specified domains, Australian and New Zealand Journal of Statistics, 48, 3, 269-283. [LINK]

Selected monograph chapters:

• Stachurski T., Żądło T. (2017), On the impact of correlation between variables on the accuracy of calibration estimators, Proceedings of 35th International Conference Mathematical Methods in Economics, Hradec Kralove, Czech Republic (ISBN 978-80-7435-678-0), 708-713.  [LINK]

• Warzecha K., Żądło T. (2017), Implementation of permutation tests in research of problematic use of the Internet by young people, Proceedings of 35th International Conference Mathematical Methods in Economics, Hradec Kralove, Czech Republic (ISBN 978-80-7435-678-0), 836-841. [LINK]

• Żądło T., Wolny-Dominiak A., Gamrot W. (2017), On measuring accuracy in claim frequency prediction, Proceedings of 35th International Conference Mathematical Methods in Economics, Hradec Kralove, Czech Republic (ISBN 978-80-7435-678-0), 849-853.  [LINK]

• Żądło T. (2013), On parametric bootstrap and alternatives of MSE, Proceedings of 31st International Conference Mathematical Methods in Economics 2013, College of Polytechnics Jihlava (ISBN: 978-80-87035-76-4), 1081-1086.  [LINK]

• Żądło, T. (2004), On unbiasedness of some EBLU predictor. In: Proceedings in Computational  statistics 2004, Antoch J. (red.), Physica-Verlag, Heidelberg-New York, 2019-2026. [LINK]

Books:

• Żądło T. (2015), Statystyka małych obszarów w badaniach ekonomicznych. Podejście modelowe i mieszane (In Polish) [Small area estimation in economic surveys. Model and model-assisted approach], Uniwersytet Ekonomiczny w Katowicach, Katowice. ISBN 978-83-7875-237-0.

• Żądło T. (2008), Elementy statystyki małych obszarów z programem R (In Polish) [Elements of small area estimation with R], Akademia Ekonomiczna w Katowicach, Katowice. ISBN 978-83-7246-863-5.

• Żądło T., Wywiał J. (2008), Prognozowanie szeregów czasowych za pomocą pakietu SPSS (In Polish) [Forecasting time series with SPSS], SPSS Poland, Kraków.

• Wywiał J., Żądło, T. (2002), Przykłady prognozowania ekonomicznych szeregów czasowych (in Polish) [Examples of forecasting economic time series], Wyższa Szkoła Zarządzania Marketingowego i Języków Obcych, Katowice.

Coeditor:

• Co-Guest Editor “Mathematical Population Studies” (Vol. 25, Issue 4, 2018; with Professor Enrico Fabrizi) (JCR) [LINK]

• Co-Guest Editor “Mathematical Population Studies” (Vol. 21, Issue 1, 2014; with Professor Malay Ghosh) (JCR) [LINK]

• Wywiał J., Żądło T. (eds.) “Survey Sampling in Economic and Social Research”, University of Economics in Katowice, 2009

• Wywiał J., Żdło T. (eds.) „Studia Ekonomiczne. Zeszyty Naukowe Uniwersytetu Ekonomicznego w Katowicach” Vol. 120, 2012

Invited conference presentations:

• Wolny-Dominiak A., Żądło T. (2021) On "qape" R package for measuring accuracy of small area predictors, SAE2021 – BIG4small, 20-24 VIII 2021, Naples, Italy

• Żądło T. (2019), On bootstrap for complex sampling designs, Methodology of Statistical Research, 3-5 VII 2019, Warsaw.

• Żądło T. (2018), On testing hypotheses in case of small sample size, 2nd Congress of Polish Statistics, 10-12 VII 2018, Warsaw.

• Żądło T. (2017),  On prediction for domains based on longitudinal data, 5th ITAlian Conference on Survey Methodology, 14-16 VI 2017 Bologna.

• Żądło T. (2016), On estimating accuracy in small areas, The Second Cracow Scientific Seminar on the Applications of Nonparametric and Robust Statistics in Economics within the 8th International Scientific Conference Faculty of Management Cracow University of Economics, 1 VI 2016, Kraków.

• Żądło T. (2014), Is MSE a good thing? Frontiers of Hierarchical Modeling in Observational Studies, Complex Surveys and Big Data: A Conference Honoring Professor Malay Ghosh, 28 V 2014 – 1 VI 2014, University of Maryland, USA.

Selected contributed conference presentations:

• Kucharski R. and Żądło T. (2021), On pipsboot R package, Statistiche Woche 2021, Kiel, Germany, 14-17 IX 2021

• Wolny-Dominiak A., Żądło T. (2019), Qape: R package to estimate prediction accuracy in mixed models based on bootstrap methods, 13th International Conference on Computational and Financial Econometrics (CFE 2019), 14-16 XII 2019, London, UK (presented by A. Wolny-Dominiak).

• Żądło T. (2019), On bootstrap for complex sampling designs via sampling scheme modification, Italian Conference on Survey Methodology ITACOSM 2019, Florence, 5-7 VI 2019.

• Żądło T. (2015), On some parametric bootstrap MSE estimator, Italian Conference on Survey Methodology ITACOSM 2015, Rome, 24-26 VI 2015.

• Żądło T. (2014), On measuring prediction accuracy in small area estimation in the multivariate case, Small Area Estimation 2014, 3-5 IX 2014, Poznań.  

• Żądło T. (2013), On parametric bootstrap and alternatives of MSE, 31st International Conference Mathematical Methods in Economics 2013, 11-13 IX 2013, College of Polytechnics Jihlava, Jihlava, Czech Republic.

• Żądło T. (2013), Simulation analysis of some predictors of domain total for longitudinal data, The Third ITAlian Conference on Survey Methodology ITACOSM2013, 26-28 VI 2013, Milan, Italy.

• Żądło (2011), On prediction of the domain total based on spatially correlated longitudinal data, Small Area Estimation 2011, 11-13 VIII 2011, Trier, Germany.

• Żądło (2010), On prediction of domain total in longitudinal analysis using auxiliary information, 10th International Vilnius Conference on Probability Theory and Mathematical Statistics, 28 VI-2 VII 2010, Vilnius, Lithuania.

• Żądło (2009), On prediction of sum and difference of domain totals in different periods based on longitudinal data, 29VI-1VII 2009, Small Area Estimation 2009, Elche, Spain.

• Żądło (2008), On prediction of domain total based on longitudinal data, Nordstat 2008, 16-19 VI 2008, Vilnius, Lithuania.

• Żądło T. (2007), On prediction of domain total when population elements belong to domains at random, Small Area Estimation 2007, 3-5 IX 2007, Pisa, Italy.

• Żądło T. (2007), Some innovations in prediction for small area statistics' purposes when one population element can belong to many domains, European Survey Research Association Conference ESRA 2007, 25-29 VI 2007, Prague, Czech Republic.

• Żądło, T. (2005), On mean square error of EBLU predictors based on the formula of Royall’s BLU predictor, Small Area Estimation 2005 Conference – Challenges in Statistics Production for Domains and Small Areas, 28-31 VIII 2005, Jyväskylä, Finland.

• Żądło, T. (2005), On some EBLU predictors, 25th European Meeting of Statisticians, 24-28 VII 2005, Oslo, Norway.

• Żądło, T. (2004), On unbiasedness of some EBLU predictor, COMPSTAT, 16th Symposium of IASC, 23-27 VIII 2004, Prague, Czech Republic.

Research related activities:

• visit in the Department of Statistics, University of Neuchatel, Switzerland, one week in October 2010, including the presentation at the seminar organized by the Department of Statistics

• visit in the Department of Econometrics, Vilnius University, Lithuania, one week in May 2009, lectures and computer laboratories (ERASMUS TEACHING STAFF MOBILITY PROGRAMME) on “Prediction of population and subpopulation characteristics” (10h), including the presentation on the join meeting of the Department of Statistics and the Lithuanian Statistical Society

• visit in the Department of Quantitative Methods, University of Siena, Italy, one week in October 2005, including the presentation at the seminar organized by the Department of Quantitative Methods.

Grants and selected projects:

• Team leader - visiting grant „Simulation Procedures of Estimators Assessment in R (SPEAR)”; given by consortium of 19 European institutions and universities from 14 European Union Member States InGRID-2 – Integrating Research Infrastructure for European expertise on Inclusive Growth from data to policy (the programme funded from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 730998)

• Principal Investigator – project of the Department of Statistics, Econometrics and Mathematics financed by University of Economics in Katowice (2019-2021, number of investigators: 7)

• Principal Investigator – project of the Department of Statistics, Econometrics and Mathematics financed by University of Economics in Katowice (2017, number of investigators: 7)

• Principal Investigator –  Polish National Science Centre (NCN) grant no. 2011/03/B/HS4/00954 (2012-2015, contest OPUS 2, 4th place in the grant proposals’ ranking out of 302 submitted proposals in HS4 panel)

• Investigator – Ministry of Health grant no. 20/HM/2017 (2017-2018), Prinicipal Investigator: Dr. Katarzyna Warzecha

• Investigator – Ministry of Health grant no. 5/H/M/2016 (2016), Prinicipal Investigator: Dr. Ewa Krzyżak-Szymańska

• Investigator – Ministry of Health grant no. 67/HE/2015 (2015-2016), Prinicipal Investigator: Dr. Katarzyna Warzecha

• PhD grant from State Committee of Scientific Research (KBN) no. 1 H02B 031 28 (2005-2006)

• Investigator - State Committee of Scientific Research (KBN) grant no. 1H02B 008 16 (1999-2000, Prinicipal Investigator: Professor Janusz Wywiał)

R packages

• qape (with Alicja Wolny-Dominiak) [LINK] [downloads]

• pipsboot (with Rafał Kucharski) [LINK]

Referee for:

• National Science Foundation (USA) – 2 grant proposals [LINK]

• Communications in Statistics – Simulation and Computations (JCR)

• Communications in Statistics – Theory and Methods (JCR)

• Computational Statistics and Data Analysis (JCR)

• International Journal of Environmental Research and Public Health (JCR)

• International Statistical Review (JCR)

• Journal of Applied Mathematics (JCR)

• Journal of Applied Statistics (JCR)

• Mathematical Population Studies (JCR)

• Mathematics (JCR)

• Statistical Papers (JCR)

• Test (JCR)

• American Journal of Theoretical and Applied Statistics

• International Journal of Statistics and Probability

• International Journal of Mathematics and Statistics

• Metron

• Patterns

• Statistics in Transition

• Acta Universitatis Lodziensis. Folia Oeconomica

• Journal of Economics and Management

• Proceedings of 9th Vilnius Conference on Probability Theory and Mathematical Statistics

• Przegląd Statystyczny (journal of Polish Academy of Science, Committee of Statistics and Econometrics)

• Wiadomości Statystyczne (journal published by the Polish Statistical Association and the Central Statistical Office of Poland)

• Research project financed by SGH Warsaw School of Economics

Awards:

• Silver Medal for Long Service 2023 [LINK] 

• Honorary Badge for Merits for Statistics of the Republic of Poland 2023 [LINK]

• Bronze Cross of Merit 2019 [LINK]

• The medal of Commission of National Education 2016 [LINK]

• “The best paper delivered by a junior scientist during the Small Area Estimation 2014 conference” (June 2015)

• Ministry of Science and Higher Education (for PhD thesis) 2007

• University of Economics in Katowice – Rector’s award: 2021, 2018, 2017, 2015, 2014, 2009, 2005

• University of Economics in Katowice – Rector’s scientific grant: 2020, 2019, 2018, 2015, 2014

• University of Economics in Katowice – Rector’s honourable mention for a lecture inaugurating academic year 2017/2018

• University of Economics in Katowice – Vice-Rector’s congratulation letter for achievements in teaching (2016)

• Honourable mention for the book: Żądło T., Wywiał J. (2008), Prognozowanie szeregów czasowych za pomocą pakietu SPSS, SPSS Polska, Kraków in the contest “The most beautiful books in 2007” organized by Polish Association of Books Publishers

• Ministry of National Education scholarship 2000

Courses taught:

• Business Forecasting (in English, major: International Business)

• Multivariate Methods (in English, Joint Master Degree in Quantitative Asset and Risk Management: University of Economics in Katowice, University of Applied Science bfi Vienna, Anglo-American University in Prague)

• Prediction of Population and Subpopulation Characteristics (in English, 10h, ViInius University, Lithuania in 2009)

• Quantitative Methods (in English, PhD studies)

• Survey Sampling in Economic Research (in English, major: International Business and Erasmus students - EuroClasses)

• Statistics

• Descriptive Statistics

• Descriptive and Economics Statistics

• Mathematical Statistics

• Theory of Probability and Mathematical Statistics

• Social and Economic Statistics

• Survey Sampling

• Sampling Methods in Economic Research

• Small Area Estimation

• Longitudinal Data Analysis

• Longitudinal Surveys

• Statistical Quality Control

• Statistical Analyses with SPSS

• Computer Simulation Techniques in Statistics