Publications:


| Books

  1. Ban A.I., Coroianu L., Grzegorzewski P., Fuzzy Numbers: Approximations, Ranking and applications, Institute of Computer Science, Polish Academy of Sciences, Warsaw, 2015. PDF
  2. Grzegorzewski P., Gągolewski M., Bobecka-Wesołowska K., Wnioskowanie statystyczne z wykorzystaniem środowiska R, Politechnika Warszawska, Warszawa, 2014. PDF
  3. Grzegorzewski P., Wspomaganie decyzji w warunkach niepewności. Metody statystyczne dla nieprecyzyjnych danych, EXIT, Warszawa, 2006.
  4. Grzegorzewski P., Bobecka K., Dembińska A., Pusz J., Rachunek prawdopodobieństwa i statystyka, WSISiZ, Warszawa, wyd. I i II - 2001, wyd. III - 2002, wyd. IV - 2003, 2005, wyd. V - 2008.
  5. Bobecka K., Grzegorzewski P., Pusz J., Zadania z rachunku prawdopodobieństwa i statystyki, WSISiZ, Warszawa, wyd. I - 2001, wyd. II - 2003, 2005.

| Edited volumes

  1. García-Escudero L.A., Gordaliza A., Mayo A., Lubiano Gomez M.A., Gil M.A., Grzegorzewski P., Hryniewicz O., Building Bridges between Soft and Statistical Methodologies for Data Science, Springer 2023. PDF
  2. Grzegorzewski P., Kochanski A., Kacprzyk J. (Eds.), Soft Modeling in Industrial Manufacturing, Springer 2019.PDF
  3. Destercke S., Denoeux T., Gil M.A., Grzegorzewski P., Hryniewicz O. (Eds.), Uncertainty Modelling in Data Science, Springer 2019.PDF
  4. Ferraro M.B., Giordani P., Vantaggi B., Gagolewski M., Gil M.A., Grzegorzewski P., Hryniewicz O. (Eds.), Soft Methods for Data Science, Springer 2017.PDF
  5. De Tre G., Grzegorzewski P., Kacprzyk J., Owsiński J.W., Penczek W., Zadrożny S. (Eds.), Challenging Problems and Solutions in Intelligent Systems, Springer 2016.PDF
  6. Grzegorzewski P., Gagolewski M., Hryniewicz O., Gil M.A. (Eds.), Strengthening Links Between Data Analysis and Soft Computing, Springer, Heidelberg, 2015.PDF
  7. Grzegorzewski P., Stefanini L. (Eds.), Special Issue on Fuzzy Numbers and Their Applications, Fuzzy Sets and Systems, Volume 257 (2014). PDF
  8. Grzegorzewski P., Rzeżuchowski T. (Eds.), Issues in Industrial Mathematics, Politechnika Warszawska, Warszawa 2013.
  9. Kruse R., Berthold M.R., Gil M.A., Grzegorzewski P., Hryniewicz O. (Eds.), Synergies of Soft Computing and Statistics for Intelligent Data Analysis, Springer, Heidelberg, 2013. PDF
  10. Borgelt C., Gonzales-Rodriguez G., Trutschnig W., Lubiano M.A., Gil M.A., Grzegorzewski P., Hryniewicz O. (Eds.), Combining Soft Computing and Statistical Methods in Data Analysis, Springer, Heidelberg, 2010. PDF
  11. Dubois D., Lubiano M.A., Prade H., Gil M.A., Grzegorzewski P., Hryniewicz O. (Eds.), Soft Methods for handling Variability and Imprecision, Springer, Heidelberg, 2008.
  12. Lawry J., Miranda E., Bugarin A., Li S., Gil M.A., Grzegorzewski P., Hryniewicz O. (Eds.), Soft Methods for Integrated Uncertainty Modelling, Springer, Heidelberg, 2006.
  13. Grzegorzewski P., Krawczak M., Zadrożny S. (Eds.), Issues in Soft Computing - Theory and Applications, Exit, Warszawa 2005.
  14. Dramiński M., Grzegorzewski P., Trojanowski K., Zadrożny S. (Eds.), Issues in Intelligent Systems - Models and Techniques, Exit, Warszawa 2005.
  15. Lopez-Diaz M., Gil M.A., Grzegorzewski P., Hryniewicz O., Lawry J. (Eds.), Soft Methodology and Random Information Systems, Springer, Heidelberg, 2004.
  16. Grzegorzewski P., Krawczak M., Zadrożny S. (Eds.), Soft Computing - Tools, Techniques and Applications, Exit, Warszawa 2004.
  17. Grzegorzewski P., Mrówka E., Hryniewicz O., Lenz H.J., Wilrich P.Th. (Eds.), Proceedings of the VIII International Workshop on Intelligent Statistical Quality Control - ISQC'04, WSISiZ, Warsaw, 2004.
  18. Grzegorzewski P., Hryniewicz O., Gil M.A. (Eds.), Soft Methods in Probability, Statistics and Data Analysis, Springer, Heidelberg, 2002.
  19. Grzegorzewski P. (Eds.), Wybrane zagadnienia wnioskowania statystycznego z wykorzystaniem pakietu Statgraphics, Oficyna Wydawnicza Politechniki Warszawskiej, Warszawa 2001, 2002.

| Papers in journals

  1. Grzegorzewski P., Romaniuk M., Bootstrap methods for epistemic fuzzy data, International Journal of Applied Mathematics and Computer Science, 32 (2022), 285-297. PDF
  2. Nasir M., Sadollah A., Grzegorzewski P., Yoon J.H., Geem Z.W., Harmony search algorithm and fuzzy logic theory: An extensive review from theory to applications, Mathematics, 9 (2021), 2665 (1-45). PDF
  3. Grzegorzewski P., Gładek K., On some dispersion measures for fuzzy data and their robustness, TWMS Journal of Pure and Applied Mathematics, 12 (2021), 88-103. PDF
  4. Pekala B., Dyczkowski K., Grzegorzewski P., Bentkowska U., Inclusion and similarity measures for interval-valued fuzzy sets based on aggregation and uncertainty assessment, Information Sciences, 547 (2021), 1182-1200.PDF
  5. Yoon J.H., Grzegorzewski P., On optimal and asymptotic properties of a fuzzy L2 estimator, Mathematics, 8, (2020), 1956. PDF
  6. Grzegorzewski P., Hryniewicz O., Romaniuk M., Flexible bootstrap for fuzzy data based on the canonical representation, International Journal of Computational Intelligence Systems, 13 (2020), 1650-1662. PDF.
  7. Grzegorzewski P., Hryniewicz O., Romaniuk M., Flexible resampling for fuzzy data, International Journal of Applied Mathematics and Computer Science, 30 (2020), 281-297.PDF
  8. Grzegorzewski P., Śpiewak M., The sign test and the signed-rank test for interval-valued data, International Journal of Intelligent Systems 34 (2019), 2122‐2150. PDF
  9. Helbin P., Baczyński M.,Grzegorzewski P., Niemyska W., Some properties of fuzzy implications based on copulas, Information Sciences 502 (2019), 1-17. PDF
  10. Coroianu L., Gągolewski M., Grzegorzewski P., Piecewise linear approximation of fuzzy numbers: algorithms, arithmetic operations and stability of characteristics, Soft Computing 23 (2019), 9491–9505. PDF
  11. Kołacz A., Grzegorzewski P., Asymptotic algorithm for computing the sample variance of interval data, Iranian Journal of Fuzzy Systems 16 (2019), 83-96.PDF
  12. Amirfakhrian M., Yeganehmanesh Sh., Grzegorzewski P., A new distance on fuzzy semi-numbers, Soft Computing 22 (2018), 4511-4524.PDF
  13. Yeganehmanesh Sh., Amirfakhrian M., Grzegorzewski P., Fuzzy semi-numbers and their elementary arithmetic with a medical case study, International Journal of Computational Intelligence Systems 11 (2018), 991–1004.PDF
  14. Yeganehmanesh Sh., Amirfakhrian M., Grzegorzewski P., Fuzzy semi-numbers and a distance on them with a case study in medicine, Mathematical Sciences 12 (2018), 41-52.PDF
  15. Grzegorzewski P., On separability of fuzzy relations, International Journal of Fuzzy Logic and Intelligent Systems 17 (2017), 137-144.PDF
  16. Grzegorzewski P., Testy serii, Delta 9 (2017), 4-8.PDF
  17. Baczyński M., Grzegorzewski P., Mesiar R., Helbin P., Niemyska W., Fuzzy implications based on semicopulas, Fuzzy Sets and Systems 323 (2017), 138-151.PDF
  18. Ramos-Guajardo A.B., Grzegorzewski P., Distance-based linear discriminant analysis for interval-valued data, Information Sciences 372 (2016) 591-607.PDF
  19. Kołacz A., Grzegorzewski P., Measures of dispersion for multidimensional data, European Journal of Operational Research 251 (2016), 930-937. PDF
  20. Baczyński M., Grzegorzewski P., Helbin P., Niemyska W., Properties of the probabilistic implications and S-implications, Information Sciences 331 (2016) 2-14.PDF
  21. Ładyżyński P.P., Grzegorzewski P., Vague preferences in recommender systems, Expert Systems with Applications 42 (2015), 9402-9411. PDF
  22. Grzegorzewski P., Trudne pytania, Delta 10 (2015), 3-5.PDF
  23. Kochański A., Grzegorzewski P., Soroczyński A., Olwert A., Modeling of austempered ductile iron using discrete signals, Computer Methods in Materials Science 14 (2014), 190-196.PDF
  24. Grzegorzewski P., Stefanini L., Fuzzy numbers and their applications, Fuzzy Sets and Systems 257 (2014), 1-2.PDF
  25. Grzegorzewski P., Szymanowski H., Goodness-of-fit tests for fuzzy data, Information Sciences 288 (2014), 374-386.PDF
  26. Grzegorzewski P., Pasternak-Winiarska K., Natural trapezoidal approximations of fuzzy numbers, Fuzzy Sets and Systems 250 (2014), 90-109. PDF
  27. Grzegorzewski P., W krainie średnich, Delta 12 (2014), 14-15.PDF
  28. Coroianu L., Gągolewski M., Grzegorzewski P., Nearest piecewise linear approximation of fuzzy numbers, Fuzzy Sets and Systems 233 (2013), 26-51.PDF
  29. Grzegorzewski P., Probabilistic implications, Fuzzy Sets and Systems 226 (2013), 53-66. PDF
  30. Grzegorzewski P., On some basic concepts in probability of IF-events, Information Sciences 232 (2013), 411-418. PDF
  31. Ładyżyński P., Grzegorzewski P., Particle swarm intelligence tunning of fuzzy geometric protoforms for price patterns recognition and stock trading, Expert Systems with Applications 40 (2013), 2391-2397. PDF
  32. Grzegorzewski P., Fuzzy number approximation via shadowed sets, Information Sciences 225 (2013), 35-46. PDF
  33. Grzegorzewski P., Statistical tests for comparing Pareto charts, Communications in Numerical Analysis 2012 (2012), 1-12. PDF
  34. Gągolewski M., Grzegorzewski P., Possibilistic analysis of arity-monotonic aggregation operators and its relation to bibliometric impact assessment of individuals, International Journal of Approximate Reasoning 52 (2011) 1312-1324. PDF
  35. Ban A., Coroianu L., Grzegorzewski P., Trapezoidal approximation and aggregation, Fuzzy Sets and Systems 177 (2011), 45-59. PDF
  36. Grzegorzewski P., The inclusion-exclusion principle for IF-events, Information Sciences 181 (2011), 536-546. PDF
  37. Grzegorzewski P., On possible and necessary inclusion of intuitionistic fuzzy sets, Information Sciences 181 (2011), 342-350. PDF
  38. Gągolewski M., Grzegorzewski P., A geometric approach to the construction of scientific impact indices, Scientometrics 81 (2009), 617-634. PDF
  39. Grzegorzewski P., k-sample median test for vague data, International Journal of Intelligent Systems 24 (2009), 529-539. PDF
  40. Grzegorzewski P., Kendall's correlation coefficient for vague preferences, Soft Computing 13 (2009), 1055-1061.
  41. Grzegorzewski P., Trapezoidal approximations of fuzzy numbers preserving the expected interval - algorithms and properties, Fuzzy Sets and Systems 159 (2008), 1354-1364.
  42. Grzegorzewski P., Mrówka E., Flexible Querying via IF-Sets, International Journal of Intelligent Systems, 22 (2007), 587-597.
  43. Grzegorzewski P., Mrówka E., Trapezoidal approximation of fuzzy numbers - revisited, Fuzzy Sets and Systems 158 (2007), 757-768.
  44. Grzegorzewski P., The coefficient of concordance for vague data, Computational Statistics & Data Analysis 51 (2006), 314-322.
  45. Grzegorzewski P., Mrówka E., Some notes on Atanassov's intuitionistic fuzzy sets, Fuzzy Sets and Systems 156 (2005), 492-495.
  46. Grzegorzewski P., Mrówka E., Trapezoidal approximations of fuzzy numbers, Fuzzy Sets and Systems 153 (2005), 115-135.
  47. Grzegorzewski P., Distances Between Intuitionistic Fuzzy Sets and/or Interval-Valued Fuzzy Sets Based on the Hausdorff Metric, Fuzzy Sets and Systems 148 (2004), 319-328.
  48. Grzegorzewski P., Approximation of a Fuzzy Number Preserving Entropy-Like Nonspecifity, Operations Research and Decisions 4 (2003), 49-59.
  49. Grzegorzewski P., Robustness of Estimation in the Uniform Distribution under Dependencies in a Sample, Communications in Statistics - Theory and Methods 32 (2003), 1155-1168.
  50. Grzegorzewski P., Mrówka E., Trapezoidal Approximations of Fuzzy Numbers, Lecture Notes in Artificial Intelligence 2715 (2003), 237-244.
  51. Grzegorzewski P., Nearest Interval Approximation of a Fuzzy Number, Fuzzy Sets and Systems 130 (2002), 321-330.
  52. Grzegorzewski P., Hryniewicz O., Computing with Words and Life Data, International Journal of Applied Mathematics and Computer Science 12 (2002), 337-345. PDF
  53. Grzegorzewski P., Wieczorkowski R., Testing Multivariate Normality by Data Transformations, Acta Universitatis Lodziensis - Folia Oeconomica, 156 (2002), 59-73. PDF
  54. Grzegorzewski P., Fuzzy Tests - Defuzzification and Randomization, Fuzzy Sets and Systems 118 (2001), 437-446.
  55. Grzegorzewski P., Conditional Probability and Independence of Intuitionistic Fuzzy Events, Notes on Intuitionistic Fuzzy Sets Vol. 6, No 1, 2000, 7-14.
  56. Grzegorzewski P., Hryniewicz O., Soft Methods in Statistical Quality Control, Control and Cybernetics, 29 (2000), 119-140.
  57. Grzegorzewski P., Testing Statistical Hypotheses with Vague Data, Fuzzy Sets and Systems, 112 (2000), 501-510.
  58. Wieczorkowski R., Grzegorzewski P., Entropy Estimators - Improvements and Comparisons, Communications in Statistics - Simulation and Computation, 28 (1999), 541-567.
  59. Grzegorzewski P., Wieczorkowski R., Entropy-Based Goodness-of-Fit Test for Eponentiality, Communications in Statistics - Theory and Methods, 28 (1999), 1183-1202.
  60. Grzegorzewski P., Statistical Inference about the Median from Vague Data, Control and Cybernetics 27 (1998), 447-464. PDF
  61. Grzegorzewski P., Metrics and Orders in Space of Fuzzy Numbers, Fuzzy Sets and Systems 97 (1998), 83-94.
  62. Grzegorzewski P., Hryniewicz O., Testing Statistical Hypotheses in Fuzzy Environment, Mathware and Soft Computing Vol. 4, No. 3 (1997), 203-217.PDF
  63. Grzegorzewski P., Robustness Against Dependence of Some Nonparametric Tests, Discussiones Mathematicae - Algebra and Stochastic Methods, Vol 15, No. 2 (1995), 203-212.PDF
  64. Grzegorzewski P., The Robustness Against Dependence of Nonparametric Tests for the Two-Sample Location Problem, Applicationes Mathematicae 22,4 (1995), 469-476.PDF
  65. Grzegorzewski P., Zasada włączeń i wyłączeń, Delta 6 (1994), 11-13.
  66. Grzegorzewski P., The Infinitesimal Robustness of Tests Against Dependence, Zastosowania Matematyki 21,3 (1992), 455-460.PDF
  67. Grzegorzewski P., System reprezentantów, czyli rzecz o tłumaczach, komisjach itp., Delta 2 (1992), 3-5.
  68. Grzegorzewski P., Dwupróbkowe nieparametryczne testy położenia, Matematyka Stosowana 34 (1991), 37-56.PDF

| Papers in edited volumes and proceedings

  1. Grzegorzewski P., Paired sample test for fuzzy data, In: García-Escudero L.A. et al. (Eds.), Building Bridges between Soft and Statistical Methodologies for Data Science, Springer 2023, pp. 200-207. PDF
  2. Grzegorzewski P., Two-sample test for comparing ambiguity in fuzzy data, In: Proceedings of the 2022 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2022), pp. 1-8, 2022. PDF
  3. Grzegorzewski P., Testing independence with fuzzy data, In: D. Ciucci et al. (Eds.), Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2022), Proceedings of IPMU 2022, CCIS 1602, pp. 520–531, 2022. PDF
  4. Grzegorzewski P., Romaniuk M., Bootstrapped Kolmogorov-Smirnov test for epistemic fuzzy data, In: D. Ciucci et al. (Eds.), Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2022), Proceedings of IPMU 2022, CCIS 1602, pp. 494–507, 2022. PDF
  5. Grzegorzewski P., Romaniuk M., Bootstrap methods for fuzzy data, In: Atanassov K.T. et al. (Eds.), Uncertainty and Imprecision in Decision Making and Decision Support: New Advances, Challenges, and Perspectives, Springer 2022, pp. 28-47. PDF
  6. Grzegorzewski P., Romaniuk M., Epistemic bootstrap for fuzzy data, In: Joint Proceedings of the 19th World Congress of the International Fuzzy Systems Association (IFSA), the 12th Conference of the European Society for Fuzzy Logic and Technology (EUSFLAT), and the 11th International Summer School on Aggregation Operators (AGOP), Atlantis Press, pp. 538-545. PDF
  7. Grzegorzewski P., Goławska J., In search of a precise estimator based on imprecise data, In: Joint Proceedings of the 19th World Congress of the International Fuzzy Systems Association (IFSA), the 12th Conference of the European Society for Fuzzy Logic and Technology (EUSFLAT), and the 11th International Summer School on Aggregation Operators (AGOP), Atlantis Press, pp. 530-537. PDF
  8. Grzegorzewski P., Gadomska O., Nearest neighbor tests for fuzzy data, In: Proceedings of the 2021 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), pp. 1-6. PDF
  9. Sadłowska H., Kochański A., Grzegorzewski P., Multi-phase fuzzy modeling in the innovative RTH hydroforming technology, In: Proceedings of the 2021 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), pp. 1-6. PDF
  10. Grzegorzewski P., Permutation k-sample goodness-of-fit test for fuzzy data, In: Proceedings of the 2020 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), pp. 1-8. PDF
  11. Grzegorzewski P., Two-sample dispersion problem for fuzzy data, In: Lesot M.J. et al. (Eds.), Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2020), Proceedings, Part III, Communications in Computer and Information Science 1239, Springer 2020, pp. 82-96, 2020. PDF
  12. Grzegorzewski P., Śpiewak M., Two-sample median test for interval-valued data, In: Atanassov K.T. et al. (Eds.), Uncertainty and Imprecision in Decision Making and Decision Support: New Challenges, Solutions and Perspectives, Springer 2021, pp. 113-128. PDF
  13. Grzegorzewski P., Hryniewicz O., Romaniuk M.Flexible bootstrap based on the canonical representation of fuzzy numbers, In: Proceedings of the 2019 Conference of the International Fuzzy Systems Association and the European Society for Fuzzy Logic and Technology (EUSFLAT 2019), Atlantis Press 2019, pp. 490-497. PDF
  14. Grzegorzewski P., Kochanski A., Data preprocessing in industrial manufacturing, In: Grzegorzewski et al., Soft Modeling in Industrial Manufacturing, Springer 2019, pp. 27-41.PDF
  15. Grzegorzewski P., Kochanski A., From data to reasoning, In: Grzegorzewski et al., Soft Modeling in Industrial Manufacturing, Springer 2019, pp. 15-25.PDF
  16. Grzegorzewski P., Kochanski A., Data and modeling in industrial manufacturing, In: Grzegorzewski et al., Soft Modeling in Industrial Manufacturing, Springer 2019, pp. 3-13.PDF
  17. Grzegorzewski P., Measures of dispersion for interval data, In: Destercke S. et al. (Eds.), Uncertainty Modelling in Data Science, Springer 2019, pp. 91–98.PDF
  18. Grzegorzewski P., Two-sample dispersion tests for interval-valued data, In: J. Medina et al. (Eds.), Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2018), Proceedings, Part III, Communications in Computer and Information Science 855, Springer 2018, pp. 40–51.PDF
  19. Grzegorzewski P., The Kolmogorov–Smirnov goodness-of-fit test for interval-valued data, In: Gil E., Gil E., Gil J., Gil M.A. (Eds.), The Mathematics of the Uncertain, Springer 2018, pp. 615-627.PDF
  20. Grzegorzewski P., Śpiewak M., The Mann-Whitney test for interval-valued data, In: Kacprzyk J. et al. (eds.), Advances in Fuzzy Logic and Technology 2017, Advances in Intelligent Systems and Computing 642, Springer, pp. 188-199.PDF
  21. Grzegorzewski P., The Kolmogorov goodness-of-fit test for interval-valued data, 2017 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), pp. 1-6, DOI: 10.1109/FUZZ-IEEE.2017.8015557.PDF
  22. Grzegorzewski P., Testing goodness-of-fit with interval-valued data, In: Bentkowska U., Drygaś P., Król A., Pękala B., Rak E. (Eds.), Proceedings of the 3rd International Symposium on Fuzzy Sets - Uncertainty Modelling ISFS 2017, Rzeszów (Poland), May 19-20, 2017, pp. 9-15.
  23. Grzegorzewski P., Śpiewak M., The sign test for interval-valued data, In: Ferraro M.B. et al. (Eds.), Soft Methods for Data Science, Springer 2017, pp. 269-276.PDF
  24. Yoon J.H., Choi S.H., Grzegorzewski P., On asymptotic properties of the multiple fuzzy least squares estimator, In: Ferraro M.B. et al. (Eds.), Soft Methods for Data Science, Springer 2017, pp. 525-532.PDF
  25. Grzegorzewski P., On functions derived from fuzzy implications, In: J.P. Carvalho et al. (Eds.), Information Processing and Management of Uncertainty in Knowledge-Based Systems (IPMU 2016), Proceedings, Part I, Communications in Computer and Information Science 610, , Springer 2016, pp. 423–434.PDF
  26. Wieszczy P., Grzegorzewski P., Support vector machines in fuzzy regression, In: De Tre G., Grzegorzewski P., Kacprzyk J., Owsiński J.W., Penczek W., Zadrożny S. (Eds.), Challenging problems and solutions in intelligent systems, Springer 2016, pp. 103-138.PDF
  27. Ładyżyński P.P., Grzegorzewski P., Modeling vague preferences in recommender systems, In: Computational Methods in Data Analysis, Proceedings of ITRIA 2015, Warsaw, 24-26 October 2015, Institute of Computer Science, Polish Academy of Sciences, pp. 77-92.
  28. Grzegorzewski P., Ramos-Guajardo A.B., Similarity based one-sided tests for the expected value and interval data, In: Alonso J.M., Bustince H., Reformat M. (Eds.), Proceedings of the 2015 Conference of the International Fuzzy Systems Association and the European Society for Fuzzy Logic and Technology, Atlantis Press, pp. 960-966, 2015.PDF
  29. Baczyński M., Grzegorzewski P., Mesiar R., Fuzzy implications based on semicopulas, In: Alonso J.M., Bustince H., Reformat M. (Eds.), Proceedings of the 2015 Conference of the International Fuzzy Systems Association and the European Society for Fuzzy Logic and Technology, Atlantis Press, pp. 792-798, 2015.PDF
  30. Grzegorzewski P., Łącka H., Recommender systems and BOWA operators, In: P. Angelov et al. (Eds.), Intelligent Systems'2014, Proceedings of the 7th International Conference Intelligent Systems IEEE IS'2014, September 24-26, 2014, Warsaw, Poland, Volume 1: Mathematical Foundations, Theory, Analyses, Springer 2014, pp. 11-21.PDF
  31. Ładyżyński P.P., Grzegorzewski P., On incomplete label ranking with IF-sets, In: Grzegorzewski P., Gagolewski M., Hryniewicz O., Gil M.A. (Eds.): Strengthening Links Between Data Analysis and Soft Computing, Springer, 2015, pp. 55-62.PDF
  32. Grzegorzewski P., Szymanowski H., Chi-square test for homogeneity with fuzzy data, In: Grzegorzewski P., Gagolewski M., Hryniewicz O., Gil M.A. (Eds.): Strengthening Links Between Data Analysis and Soft Computing, Springer, 2015, pp. 151-158.PDF
  33. Baczyński M., Grzegorzewski P., Niemyska W. Laws of contraposition and law of importation for probabilistic implications and probabilistic S-implications, Laurent A., Strauss O., Bouchon-Meunier B., Yager R.R. (Eds.): Information Processing and Management of Uncertainty in Knowledge-Based Systems, 15th International Conference, IPMU 2014, Montpellier, France, July 15-19, 2014, Proceedings, Part I, CCIS 442, pp. 158-167, 2014.PDF
  34. Coroianu L., Gągolewski M., Grzegorzewski P., Firozja M.A., Houlari T. Piecewise linear approximation of fuzzy numbers preserving the support and core, Laurent A., Strauss O., Bouchon-Meunier B., Yager R.R. (Eds.): Information Processing and Management of Uncertainty in Knowledge-Based Systems, 15th International Conference, IPMU 2014, Montpellier, France, July 15-19, 2014, Proceedings, Part II, CCIS 443, pp. 244-253, 2014.PDF
  35. Ładyżyński P.P., Grzegorzewski P., A recommender system based on customer reviews mining, In: L. Rutkowski et al. (Eds.): ICAISC 2014, Part II, Lecture Notes in Artificial Intelligence 8468, 2014, pp. 512-523.PDF
  36. Łącka H., Grzegorzewski P., On measuring association between groups of rankings in recommender systems, In: L. Rutkowski et al. (Eds.): ICAISC 2014, Part II, Lecture Notes in Artificial Intelligence 8468, 2014, pp. 423-432.PDF
  37. Ładyzyński P.P., Grzegorzewski P., Comparing vague preferences in recommender systems, In: Proceedings of the 8th conference of the EUROFUSE 2013 Workshop on Uncertainty and Imprecision Modelling in Decision Making, De Baets B., Fodor J., Montes S. (Eds.), Oviedo, Spain, December 2-4, 2013, Ediciones de la Universidad de Oviedo, 2013, pp. 149-156.
  38. Ban A., Coroianu L., Grzegorzewski P., A fixed-shape fuzzy median of a fuzzy sample, In: Proceedings of the 8th conference of the European Society for Fuzzy Logic and Technology (EUSFLAT-13), Pasi G., Montero J., Ciucci D (Eds.), Milano, Italy, September 10-12, 2013, Atlantis Press, pp. 215-222. PDF
  39. Grzegorzewski P., Granular regression, In: Proceedings of the 2013 Joint IFSA World Congress NAFIPS Annual Meeting (IFSA/NAFIPS), Edmonton, Canada, June 24-28, 2013, pp. 974-979.PDF
  40. Ładyżyński P., Żbikowski K., Grzegorzewski P., Stock trading with random forests, trend detection tests and Force Index Volume indicators, Springer, Lecture Notes in Computer Science 7895, 2013, pp. 441-452. PDF
  41. Grzegorzewski P., On the interval approximation of fuzzy numbers, Communications in Computer and Information Science 299, Springer 2012, pp. 58-68. PDF
  42. Grzegorzewski P., Survival implications, Communications in Computer and Information Science 298, Springer 2012, pp. 335-344. PDF
  43. Ładyżyński P., Grzegorzewski P., Retrieving informative content from web pages with conditional learning of support vector machines and semantic analysis, Springer, Lecture Notes in Computer Science 7268, 2012, pp. 128-135. PDF
  44. Ładyżyński P., Grzegorzewski P., Fuzzy geometric protoforms for price patterns recognition and stock trading, In: New Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. II, Applications, Atanassov K. et al. (Eds.), Warsaw, 2012, pp. 111-122.
  45. Ostrycharz M., Grzegorzewski P., Feature selection based on the AIC helpfulness criterion, In: New Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. I, Foundations, Atanassov K. et al. (Eds.), Warsaw, 2012, pp. 129-141.
  46. Grzegorzewski P., Ziembińska P, Spearman’s rank correlation coefficient for vague preferences, In: FQAS 2011, Christiansen H. et al. (Eds.), Springer, Lecture Notes in Artificial Intelligence 7022, 2011, pp. 342-353. PDF
  47. Grzegorzewski P., On the properties of probabilistic implications, In: Eurofuse 2011, De Baets B. et al. (Eds.), Springer, AISC 107, 2011, pp. 67-78. PDF
  48. Grzegorzewski P., Pasternak-Winiarska K., Trapezoidal approximations of fuzzy numbers with restrictions on the support and core, In: Proc. 7th Conf. European Society for Fuzzy Logic and Technology, Atlantis Press, 2011, pp. 749-756. PDF
  49. Grzegorzewski P., Probabilistic implications, In: Proc. 7th Conf. European Society for Fuzzy Logic and Technology, Atlantis Press, 2011, pp. 254-258. PDF
  50. Gągolewski M., Grzegorzewski P., Axiomatic characterizations of (quasi-) L-statistics and S-statistics and the Producer Assessment Problem, In: Proc. 7th Conf. European Society for Fuzzy Logic and Technology, Atlantis Press, 2011, pp. 53-58. PDF
  51. Gągolewski M., Grzegorzewski P., Metody i problemy naukometrii (Methods and problems in scientometrics), In: Psychologia i informatyka. Synergia i kontradykcje, Tadeusiewicz R., Rowiński T. (Eds.), Wyd. UKSW, Warszawa, 2010, pp. 103-126.
  52. Ładyżyński P., Grzegorzewski P., Soft methods in trend detection, In: Combining Soft Computing and Statistical Methods in Data Analysis, Borgelt C. et all. (Eds.), Springer, 2010, pp. 395-402. PDF
  53. Gągolewski M., Grzegorzewski P., S-statistics and their basic properties, In: Combining Soft Computing and Statistical Methods in Data Analysis, Borgelt C. et all. (Eds.), Springer, 2010, pp. 281-288. PDF
  54. Grzegorzewski P., Trapezoidal approximation of fuzzy numbers based on sample data, In: Information Processing and Management of Uncertainty in Knowledge-Based Systems - Applications, Huellermeier E., Kruse R., Hoffmann F. (Eds.), Springer, 2010, pp. 402-411. PDF
  55. Gągolewski M., Grzegorzewski P., Arity-monotonic extended aggregation operators, In: Information Processing and Management of Uncertainty in Knowledge-Based Systems - Theory and Methods, Huellermeier E., Kruse R., Hoffmann F. (Eds.), Springer, 2010, pp. 693-702. PDF
  56. Grzegorzewski P., Algorithms for trapezoidal approximations of fuzzy numbers preserving the expected interval, In: Foundations of Reasoning under Uncertainty, Bouchon-Meunier, B.; Magdalena, L.; Ojeda-Aciego, M.; Verdegay, J.-L.; Yager, R.R. (Eds.), Springer, 2010, STUDFUZZ 249, pp. 85-98. PDF
  57. Gągolewski M., Grzegorzewski P., O pewnym uogolnieniu indeksu Hirscha, In: Kadry i infrastruktura nowoczesnej nauki: teoria i praktyka, Kawalec P., Lipski P. (Eds.), Wyd. Lubelskiej Szkoły Biznesu, 2009, pp. 15-29.
  58. Grzegorzewski P., Pasternak-Winiarska K., Bi-symmetrically weighted trapezoidal approximations of fuzzy numbers, In: Proceedings of Ninth International Conference on Intelligent Systems Design and Applications ISDA’09, Piza, Italy, Nov. 30 2009-Dec. 2 2009, IEEE, pp. 318-323. PDF
  59. Grzegorzewski P., Shadowed set approximation of fuzzy numbers, In: Proceedings of Eurofuse 09 Workshop on Preference Modelling and Decision Analysis, Pamplona, Spain, 16-18 September, 2009, pp. 285-290.
  60. Gągolewski M., Grzegorzewski P., Possible and necessary h-indices, In: Proceedings of IFSA World congress and Eusflat Conference IFSA/Eusflat 2009, Lisbon, Portugal, 20-24 July, 2009, pp. 1691-1695.
  61. Grzegorzewski P., Stefanini L., Non-linear shaped approximation of fuzzy numbers, In: Proceedings of IFSA World congress and Eusflat Conference IFSA/Eusflat 2009, Lisbon, Portugal, 20-24 July, 2009, pp. 1535-1540.
  62. Grzegorzewski P., Pasternak-Winiarska K., Weighted trapezoidal approximations of fuzzy numbers, In: Proceedings of IFSA World congress and Eusflat Conference IFSA/Eusflat 2009, Lisbon, Portugal, 20-24 July, 2009, pp. 1531-1534.
  63. Grzegorzewski P., New algorithms for trapezoidal approximation of fuzzy numbers preserving the expected interval, In: Proceedings of the Twelfth International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, IPMU'08, L. Magdalena, M. Ojeda-Aciego, J.L. Verdegay (Eds.), Spain, Torremolinos (Málaga), June 22-27, 2008, pp. 117-123.
  64. Grzegorzewski P., A bi-robust test for vague data, In: Proceedings of the Twelfth International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, IPMU'08, L. Magdalena, M. Ojeda-Aciego, J.L. Verdegay (Eds.), Spain, Torremolinos (Málaga), June 22-27, 2008, pp. 138-144.
  65. Grzegorzewski P., Some notes on measuring the degree of inclusion for IF-sets, In: Advances in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics, Vol. I. Foundations, Atanassov K., Hryniewicz O., Kacprzyk J., Krawczak M., Nahorski Z., Szmidt E., Zadrożny S. (Eds.), Exit, 2008, pp. 119-133.
  66. Grzegorzewski P., Statistics with vague data and the robustness to data representation, In: Soft Methods for handling Variability and Imprecision, Dubois D., Lubiano M.A., Prade H., Gil M.A., Grzegorzewski P., Hryniewicz O. (Eds.), Springer, 2008, pp. 100-107.
  67. Grzegorzewski P., The inclusion-exclusion principle for IF-events, In: Developments in Fuzzy Sets, Intuitionistic Fuzzy Sets, Generalized Nets and Related Topics. Foundations. Vol. I, Atanassov K., Bustince H., Hryniewicz O., Kacprzyk J., Krawczak M., Riecan B., Szmidt E. (Eds.), Exit, 2008, pp. 107-131.
  68. Mrówka E., Grzegorzewski P., Friedman's test for ambiguous and missing data, In: Soft Methods for Integrated Uncertainty Modelling, Lawry J., Miranda E., Bugarin A., Li S., Gil M.A., Grzegorzewski P., Hryniewicz O. (Eds.), Springer, Heidelberg, 2006, pp. 111-118.
  69. Grzegorzewski P., Mrówka E., Optimal process calibration under nonsymmetric loss function, In: Frontiers in Statistical Quality Control, Lenz H. J., Wilrich P. Th. (Eds.), Springer, Physica-Verlag, 2006, pp. 309-321.
  70. Mrówka E., Grzegorzewski P., The Fréchet control charts, In: Frontiers in Statistical Quality Control, Lenz H. J., Wilrich P. Th. (Eds.), Springer, Physica-Verlag, 2006, pp. 123-135.
  71. Grzegorzewski P., Jędrej A., Chi-square goodness-of-fit test for vague data, In: Proceedings of the Eleventh International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, Paris, France, July 2-7, 2006, pp. 952-956.
  72. Mrówka E., Grzegorzewski P., Testing independence with ambiguous data, In: Proceedings of the Eleventh International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, Paris, France, July 2-7, 2006, pp. 739-744.
  73. Grzegorzewski P., Two-sample median test for vague data, In: Proceedings of the 4th Conference of the European Society for Fuzzy Logic and Technology - Eusflat 2005, Barcelona, September 7-9, 2005, pp. 621-626.
  74. Mrówka E., Grzegorzewski P., Friedman's test with missing observations, In: Proceedings of the 4th Conference of the European Society for Fuzzy Logic and Technology - Eusflat 2005, Barcelona, September 7-9, 2005, pp. 627-632.
  75. Mrówka E., Grzegorzewski P., Fuzzy numbers and their approximations, In: Issues in Soft Computing - Decisions and Operations Research, Hryniewicz O., Kacprzyk J., Kuchta D. (Eds.), EXIT, Warszawa 2005, pp. 53-69.
  76. Grzegorzewski P., On measuring distances between intuitionistic fuzzy sets, In: Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Atanassov A., Kacprzyk J., Krawczak M. (Eds.), Vol. 2, Wyd. WSISiZ, Warszawa 2004, pp. 107-115.
  77. Grzegorzewski P., Distribution-Free Tests for Vague Data, In: Soft Methodology and Random Information Systems, Lopez-Diaz M., Gil M.A., Grzegorzewski P., Hryniewicz O., Lawry J. (Eds.), Springer, Heidelberg, 2004, pp. 495-502.
  78. Grzegorzewski P., On Measuring Association between Preference Systems, Proceedings of the 2004 IEEE International Conference on Fuzzy Systems, Budapest, Hungary, July 25-29, 2004, pp. 133-137. PDF
  79. Grzegorzewski P., Mrówka E., Subsethood Measure for Intuitionistic Fuzzy Sets, In: Proceedings of the 2004 IEEE International Conference on Fuzzy Systems, Budapest, Hungary, July 25-29, 2004, pp. 139-142. PDF
  80. Grzegorzewski P., The Generalized Spearman's Rank Correlation Coefficient, In: Proceedings of the Tenth International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, Perugia, Italy, July 4-9, 2004, pp. 1413-1418.
  81. Grzegorzewski P., Mrówka E., On the Entropy of Intuitionistic Fuzzy Sets and Interval-Valued Fuzzy Sets, In: Proceedings of the Tenth International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems, Perugia, Italy, July 4-9, 2004, pp. 1419-1426.
  82. Grzegorzewski P., Mrówka E., Optimal Process Calibration under Nonsymmetric Loss Function, In: Proceedings of the VIII International Workshop on Intelligent Statistical Quality Control - ISQC'04, Grzegorzewski P., Mrówka E., Hryniewicz O., Lenz H.J., Wilrich P.Th. (Eds.), Warsaw, Poland, June 14-16, 2004, WSISiZ, pp. 83-94.
  83. Mrówka E, Grzegorzewski P., The Frechet Control Charts, In: Proceedings of the VIII International Workshop on Intelligent Statistical Quality Control - ISQC'04, Grzegorzewski P., Mrówka E., Hryniewicz O., Lenz H.J., Wilrich P.Th. (Eds.), Warsaw, Poland, June 14-16, 2004, WSISiZ, pp. 175-186.
  84. Grzegorzewski P., The Generalized Coefficient of Concordance, In: Current Issues in Data and Knowledge Engineering, De Baets B., De Caluwe R., De Tre G., Fodor J., Kacprzyk J., Zadrożny S. (Eds.), Exit, Warszawa, 2004, pp. 241-251.
  85. Grzegorzewski P., Mrówka E., Intuitionistic Fuzzy Events and their Probabilities, In: Issues in Intuitionistic Fuzzy Sets and Generalized Nets, Atanassov A., Kacprzyk J., Krawczak M. (Eds.), Wyd. WSISiZ, Warszawa 2004, pp. 117-123.
  86. Grzegorzewski P., Intuitionistic Fuzzy Numbers - Principles, Metrics and Ranking, In: Soft Computing - Foundations and Theoretical Aspects, Atanassov K.T., Hryniewicz O., Kacprzyk J. (Eds.), Exit, Warszawa 2004, pp. 235-249.
  87. Grzegorzewski P., Mrówka E., Regression Analysis with Fuzzy Data, In: Soft Computing - Tools, Techniques and Applications, Grzegorzewski P., Krawczak M., Zadrożny S. (Eds.), Exit, Warszawa 2004, pp. 65-76.
  88. Mrówka E., Grzegorzewski P., Karty kontrolne Kullbacka-Leiblera, Badania Operacyjne i Systemowe 2004 - Podejmowanie Decyzji, Podstawy Metodyczne i Zastosowania, Kulikowski R., Kacprzyk J., Słowiński R. (Eds.), Exit, Warszawa 2004, pp. 381-399.
  89. Grzegorzewski P., Distances and Orderings in a Family of Intuitionistic Fuzzy Numbers, In: Proceedings of the Third International Conference in Fuzzy Logic and Technology "Eusflat 2003", Zittau, Germany, September 10-12, 2003, pp. 223-227.
  90. Grzegorzewski P., Mrówka E., Flexible Querying via Intuitionistic Fuzzy Sets, Proceedings of the Third International Conference in Fuzzy Logic and Technology "Eusflat 2003", Zittau, Germany, September 10-12, 2003, pp. 228-231.
  91. Grzegorzewski P., The Hamming Distance Between Intuitionistic Fuzzy Sets, In: Proceedings of the 10th IFSA World Congress - IFSA 2003, Istanbul, Turkey, June 29 - July 2, 2003, pp. 35-38.
  92. Grzegorzewski P., Mrówka E., Linear Regression Analysis for Fuzzy Data, In: Proceedings of the 10th IFSA World Congress - IFSA 2003, Istanbul, Turkey, June 29 - July 2, 2003, pp. 228-231.
  93. Grzegorzewski P., Mrówka E., Trapezoidal Approximation of a Fuzzy Number - a Practical Approach, In: Proceedings of International Conference on Fuzzy Information Processing, Theories and Applications, Y. Liu, G. Chen, M. Ying, K.Y. Cai (Eds.), Beijing, China, March 1-4, 2003, Tsinghua University Press and Springer, pp. 31-35.
  94. Grzegorzewski P., Mrówka E., Approximation of Fuzzy Numbers - Revisited, In: Proceedings of International Conference on Fuzzy Information Processing, Theories and Applications, Y. Liu, G. Chen, M. Ying, K.Y. Cai (Eds.), Beijing, China, March 1-4, 2003, Tsinghua University Press and Springer, pp. 117-121.
  95. Grzegorzewski P., Testy statystyczne do porównywania kart Pareto, In: Metody i techniki analizy informacji i wspomagania decyzji, Bubnicki Z., Hryniewicz O., Kulikowski R. (Eds.), Exit, Warszawa 2002, pp. V-63 - V-69.
  96. Grzegorzewski P., Acceptance sampling Plans by Variables for Vague Data, In: Soft Methods in Probability, Statistics and Data Analysis, Grzegorzewski P., Hryniewicz O., Gil M.A. (Eds.), Springer - Physica Verlag, Heidelberg, 2002, pp. 197-206.
  97. Grzegorzewski P., Mrówka E., Probability of Intuitionistic Fuzzy Events, In: Soft Methods in Probability, Statistics and data Analysis, Grzegorzewski P., Hryniewicz O., Gil M.A. (Eds.), Springer - Physica Verlag, Heidelberg, 2002, pp. 105-115.
  98. Grzegorzewski P., Testing Fuzzy Hypotheses with Vague Data, In: Statistical Modeling, Analysis and Management of Fuzzy Data, Bertoluzza C., Gil M.A., Ralescu D. (Eds.), Springer - Physica Verlag, Heidelberg, 2002, pp. 213-225.
  99. Grzegorzewski P., A Soft Design of Acceptance Sampling Plans by Variables, In: Technologies for Contructing Intelligent Systems. Part 2. Tools, Bouchon-Meunier B., Gutierrez-Rios J., Magdalena L. and Yager R.R. (Eds.), Springer - Physica Verlag, Heidelberg, 2002, pp. 275-286.
  100. Grzegorzewski P., Hryniewicz O., Statistical Inference under Fuzzy Life Data, In: Materiały Warsztatów Naukowych "Algorytmy Ewolucyjne i Optymalizacja Globalna" oraz Konferencji "Systemy Rozmyte", Kraków, 23-25 września 2002, Oficyna Wydawnicza Politechniki Warszawskiej, pp. 160-170.
  101. Grzegorzewski P., Mrówka E., Flexible Querying Using Intuitionistic Fuzzy Sets, In: Materiały Warsztatów Naukowych "Algorytmy Ewolucyjne i Optymalizacja Globalna" oraz Konferencji "Systemy Rozmyte", Kraków, 23-25 września 2002, Oficyna Wydawnicza Politechniki Warszawskiej, pp. 171-180.
  102. Grzegorzewski P., Mrówka E., Independence, Conditional Probability and the Bayes Formula for Intuitionistic Fuzzy Events, In: Proceedings of the Ninth International Conference "Information Processing and Management of Uncertainty in Knowledge-based Systems IPMU'2002", Annecy, July 1-5, 2002, pp. 1851-1858.
  103. Grzegorzewski P., Mrówka E., Soft Querying via Intuitionistic Fuzzy Sets, In: Proceedings of the Ninth International Conference "Information Processing and Management of Uncertainty in Knowledge-based Systems IPMU'2002", Annecy, July 1-5, 2002, pp. 1845-1849.
  104. Grzegorzewski P., Interval Approximation of a Fuzzy Number and the Principle of Information Invariance, Proceedings of the Ninth International Conference "Information Processing and Management of Uncertainty in Knowledge-based Systems IPMU'2002", Annecy, July 1-5, 2002, pp. 347-354.
  105. Grzegorzewski P., Mrówka E., Fuzzy Querying and Random Data, Proceedings of the International Conference in Fuzzy Logic and Technology "Eusflat 2001", Leicester, UK, Sept. 5-7, 2001, pp. 344-347.
  106. Grzegorzewski P., Estimation of the Mean Lifetime from Vague Data, Proceedings of the International Conference in Fuzzy Logic and Technology "Eusflat 2001", Leicester, UK, Sept. 5-7, 2001, pp. 348-351.
  107. Grzegorzewski P., Hryniewicz O., Soft Methods in Hypotheses Testing, In: Soft Computing for Risk Evaluation and Management, Ruan D., Kacprzyk J., Fedrizzi M. (Eds.), Springer - Physica Verlag, Heidelberg, 2001, 55-72.
  108. Grzegorzewski P., Acceptance Sampling Plans by Attributes with Fuzzy Risks and Quality Levels, In: Frontiers in Statistical Quality Control, Lenz H. J., Wilrich P. Th. (Eds.), Springer, Physica-Verlag, 2001, 36-46.
  109. Grzegorzewski P., Interval Aggregation in Data Mining, In: Flexible Query Answering Systems, Larsen H.L., Kacprzyk J., Zadrożny S., Andreasen T., Christiansen H. (Eds.), Springer, 2000, pp. 465-474.
  110. Grzegorzewski P., A Soft Design of Acceptance Sampling Plans by Variables, Proceedings of the Eight International Conference "Information Processing and Management of Uncertainty in Knowledge-Based Systems IPMU'2000", Madrid, July 3-7, 2000, pp. 208-214.
  111. Grzegorzewski P., Conditional Probability and Independence of Intuitionistic Fuzzy Events, In: Proceedings of the International Workshop on Partial Knowledge and Uncertainty: Independence, Conditioning, Inference (Eds. R. Scozzafava and B. Vantaggi), Rome, May 4-6, 2000.
  112. Nycz P., Grzegorzewski P., Interfejs komputerowego systemu do analizy nieprecyzyjnych wyników badań niezawodności, In: Analiza systemowa w finansach i zarządzaniu. Wybrane problemy, Eds. M. Krawczak i J. Hołubiec, WSISiZ, Warszawa, 2000, pp. 150-159.
  113. Mrówka E., Grzegorzewski P., Zastosowanie testów do hipotez rozmytych w tworzeniu rozmytych zapytań, In: Analiza systemowa w finansach i zarządzaniu. Wybrane problemy, Eds. M. Krawczak i J. Hołubiec, WSISiZ, Warszawa, 2000, pp. 135-149.
  114. Grzegorzewski P., Hryniewicz O., Lifetime Tests for Vague Data, In: L.A. Zadeh, J. Kacprzyk (Eds.): Computing with words in information / intelligent systems. Part 2. Applications, Springer - Physica Verlag, Heidelberg, 1999, pp. 176-193.
  115. Grzegorzewski P., Testing Fuzzy Hypotheses with Vague Data, Proceedings of the 7th European Congress on Intelligent Techniques and Soft Computing EUFIT'99, Aachen 1999, CD-Rom.
  116. Grzegorzewski P., A Soft Design of Acceptance Sampling Plans by Attributes, In: Proceedings of the VIth International Workshop on Intelligent Statistical Quality Control, Würzburg, September 14-16, 1998, ss. 29-38.
  117. Grzegorzewski P., Control Charts for Fuzzy Data, In: Proceedings of the 5th European Congress on Intelligent Techniques and Soft Computing EUFIT'97, Aachen, 1997, ss. 1326-1330.
  118. Grzegorzewski P., Shewhart Control Charts and the Problem of the Detection of Trend, In: Proceedings of the 4th Würzburg-Umea Conference in Statistics, Eds. E. von Collani, R. Göb, G. Kiesmüller, Würzburg 1996, pp. 175-185.

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