BeataWalczak

Research page of Prof. Beata Walczak




Curriculum vitae

Fellowships

Main scientific interests

Research co-operation

Selected scientific and teaching activities

List of submitted manuscripts or book chapters:

List of published articles and book chapters:

  1. Z. Malyjurek, B. Zawisza, D. de Beer, E. Joubert, B. Walczak, Authentication of honeybush and rooibos herbal teas based on their elemental composition, Food Control, 123 (2021) 107757
    IF=4.258
  2. L. Alexander, E.I. Moelich, D. de Beer, M. Muller, B. Walczak, E. Joubert, High-temperature oxidation reduces the bitterness of honeybush infusions depending on changes in phenolic composition, LWT, 139 (2021) 110608
    IF=4.006
  3. M. Musielak, K. Kocot, B. Zawisza, E. Talik, E. Margui, I. Queralt, B. Walczak, Ultratrace determination of metal ions using graphene oxide/carbon nanotubes loaded cellulose membranes and total-reflection X-ray fluorescence spectrometry: A green chemistry approach, Spectrochimica Acta Part B: Atomic Spectroscopy, 177 (2021) 106069
    IF=3.089
  4. Z. Malyjurek, R. Vitale, B. Walczak, Different strategies for class model optimization. A comparative study, Talanta, 215 (2020) 120912
    IF=5.339
  5. G. Rabatel, F. Marini, B. Walczak, J.-M. Roger, VSN: Variable sorting for normalization, Journal of Chemometrics, 34 (2020) e3164
    IF=1.633
  6. A. Viraragavan, N. Hlengwa, D. de Beer, S. Riedel, N. Miller, S. Bowles, B. Walczak, C. Muller, E. Joubert, Model development for predicting: In vitro bio-capacity of green rooibos extract based on composition for application as screening tool in quality control, Food and Function, 11 (2020), 3084-3094
    IF=4.171
  7. F. Marini, B. Walczak, Particle swarm optimization, in Comprehensive Chemometrics, (Eds. S. Brown, R.Tauler, B. Walczak), Elsevier, Amsterdam 2020
  8. F. Marini, B. Walczak, ANOVA-Target Projection, in Comprehensive Chemometrics, (Eds. S. Brown, R. Tauler, B. Walczak), Elsevier, Amsterdam 2020
  9. S. Brown, R. Tauler, B. Walczak (Eds), Comprehensive Chemometrics, 2nd edition, Elsevier, Amsterdam 2020; No. of pages: 2944 (4 volumes) Book ISBN: 9780444641656; eBook ISBN: 9780444641663
  10. D. De Beer, J. Tobin, B. Walczak, M. Van Der Rijst, E. Joubert, Phenolic composition of rooibos changes during simulated fermentation: Effect of endogenous enzymes and fermentation temperature on reaction kinetics, Food Research International, 121 (2019) 185-196
    IF=4.972
  11. Z. Malyjurek, D. de Beer, E. Joubert, B. Walczak, Working with log-ratios, Analytica Chimica Acta, 1059 (2019) 16-27
    IF=5.977
  12. N.A. Walters, D. de Beer, A. de Villiers, B. Walczak, E. Joubert, Genotypic variation in phenolic composition of Cyclopia pubescens (honeybush tea) seedling plants, Journal of Food Composition and Analysis, 78 (2019) 129-137
    IF=3.721
  13. R.G. Brereton, J. Jansen, J. Lopes, F. Marini, A. Pomerantsev, O. Rodionova, J-M. Roger, B. Walczak, R. Tauler, Chemometrics in analytical chemistry-part II: modeling, validation, and applications , Analytical and Bioanalytical Chemistry 410 (2018) 6691-6704
    IF=3.307
  14. J. Tobin, J . Walach, D. de Beer, P. J. Williams, P. Filzmoser, B. Walczak, Untargeted analysis of chromatographic data for green and fermented rooibos: problem with size effect removal, J. Chromatography A, 1525 (2017) 109-115
    IF=3.926
  15. R. G. Brereton, J. Jansen, J. Lopes, F. Marini, A. Pomerantsev, O. Rodionova, J.M.l Roger, R. Tauler, B. Walczak, A Chemometrics Tutorial (Part 1), Analytical and Bioanalytical Chemistry, 409 (2017) 5891-5899
    IF=3.431
  16. J. Walach, P. Filzmoser, K. Hron, B. Walczak, L. Najdekr, Robust biomarker identification in a two-class problem based on pairwise log-ratios, Chemometrics and Intelligent Laboratory Systems, 171 (2017) 277-285
    IF=2.56
  17. F. Marini, D. de Beer, N. A. Walters, A. de Villiers, E. Joubert, B. Walczak, Multivariate analysis of variance of designed chromatographic data. A case study involving fermentation of rooibos tea , J. Chromatogramphy A, 1489 (2017) 115-125
    IF=3.926
  18. S. C. Bosman, D. de Beer, T. Beelders, E. L. Willenburg, C. J. Malherbe, B. Walczak, E. Joubert, Simultaneous optimisation of extraction of xanthone and benzophenone alfa-glucosidase inhibitors from Cyclopia genistoides and identification of superior genotypes for propagation, Journal of Functional Food, 33 (2017) 21-31
    IF=3.973
  19. A. Dworak, M. Nykiel, B. Walczak, A. Miazek, D. Szworst-Lupina, B. Zagdanska, M. Kielkiewicz, Maize proteomic responses to separate or overlapping soil drought and two-spoted spider mite stresses, Planta, 244 (2016) 939-960
    IF=3.239
  20. F. Marini, B. Walczak, Particle Swarm Optimization (PSO). A tutorial, Chemometrics and Intelligent Laboratory Systems, 149 (2015) 153-165
    IF=2.321
  21. F. Marini, D. de Beer, E. Joubert, B. Walczak, Analysis of variance of designed chromatographic data sets: The analysis of variance-target projection approach, Journal of Chromatography A, 1405 (2015) 94-102
    IF=4.169
  22. K. Kocot, R. Leardi, B. Walczak, R. Sitko, Determination and speciation of trace and ultratrace selenium ions by energy-dispersive X-ray fluorescence spectrometry using graphene as solid adsorbent in dispersive micro-solid phase extraction, Talanta 134 (2015) 360-365
    IF = 3.511
  23. P. Filzmoser, B. Walczak, What can go wrong at the data normalization step for identification of biomarkers?, J. Chromatography A, 1362 (2014) 194-205
    IF = 4.258
  24. R. Tauler, F. Marini, B. Walczak, L. Buydens, R. G. Brereton, W. Buchberger, P. J. Worsfold, European Analytical Column No. 42, Chemometrics and analytical chemistry, Analytical and Bioanalytical Chemistry, 406 (2014) 3525-3529
    IF = 3.66
  25. J. Orzel, M. Daszykowski, M. Kazura, D. Beerb, E. Joubertb, A. E. Schulzec, T. Beeldersc, A. de Villiersd, C. J. Malherbeb, B. Walczak, Modeling of the total antioxidant capacity of rooibos (Aspalathus linearis) tea infusions from chromatographic fingerprintsand identification of potential antioxidant markers , Journal of Chromatography A, 1366 (2014) 101-109
    IF = 4.258
  26. I. Stanimirova, M. Kazura, D. de Beer, E. Joubert, A.E. Schulze, T. Beelders, A. de Villiers, B. Walczak, High-dimensional nested analysis of variance to assess the effect of production season, quality grade and steam pasteurization on the phenolic composition of fermented rooibos herbal tea, Talanta, 115 (2013) 590-599
    IF=3.498
  27. I. Stanimirova, M. Daszykowski, B. Walczak, Robust Methods in Analysis of Multivariate Food Chemistry Data. In Federico Marini, editors: Chemometrics in Food Chemistry, Vol 28, DHST, Chennai: Elsevier, 2013, pp. 315-340
  28. V. Shapaval, B. Walczak, S. Gognies, T. Moretro, H. P. Suso, A. Wold Asli, A. Belarbie A. Kohler, FTIR spectroscopic characterization of differently cultivated food related yeasts, Analyst, 138 (2013) 4129-4138
    IF=3.969
  29. P. Zerzucha, M. Kazura, D. de Beer, E. Joubert, A.E. Schulze, T. Beelders, A. de Villiers, B. Walczak, A new concept for variance analysis of hyphenated chromatographic data avoiding signal warping, Journal of Chromatography A, 1291 (2013) 64-72
    IF=4.612
  30. J. Orzel, M. Daszykowski, I. Grabowski, G. Zaleszczyk, M. Sznajder, B. Walczak, Simultaneous determination of solvent yellow 124 and solvent red 19 using fluorescence spectroscopy and chemometrics, Talanta, 101 (2012) 78-84
    IF=3.794
  31. P. Zerzucha, B. Walczak, Concept of (dis)similarity in data analysis, Trends in Analytical Chemistry, 38 (2012) 116-128
    IF=6.351
  32. P. Zerzucha, B. Walczak, Again about PLS and feature selection, Chemometrics and Intelligent Laboratory Systems, 115 (2012) 9-17
    IF=2.291
  33. P. Zerzucha, D. Boguszewska, B. Zagdanska, B. Walczak, Non-parametric multivariate analysis of variance in proteomic response of potato to the drought stress, Analytica Chimica Acta, 719 (2012) 1-7
    IF=4.387
  34. J. Orzel, M. Daszykowski, B. Walczak, Controlling sugar quality on the basis of fluorescence fingerprints using robust calibration, Chemometrics and Intelligent Laboratory Systems, 110 (2012) 89-93
    IF=2.291
  35. P. Zerzucha, M. Daszykowski, B. Walczak, Dissimilarity partial least squares applied to non-linear modeling problems, Chemometrics and Intelligent Laboratory Systems, 110 (2012) 156-162
    IF=2.291
  36. I. Stanimirova, R. Tauler, B. Walczak, A comparison of positive matrix factorization and the weighted multivariate curve resolution method. Application to environmental data, Environmental Science & Technology 45 (2011) 10102-10110
    IF=4.825
  37. M. Daszykowski, J. Orzel, M.S. Wrobel, H. Czarnik-Matusewicz, B. Walczak, Improvement of classification using robust soft classification rules for near-infrared reflectance spectral data, Chemometrics and Intelligent Laboratory Systems, 109 (2011) 86-93
    IF=2.222
  38. F. Marini, B. Walczak, Finding relevant clustering directions in high-dimensional data using Particle Swarm Optimization, Journal of Chemometrics, 25 (2011) 366-374
    IF=1.377
  39. I. Stanimirova, K. Michalik, Z. Drzazga, P.D. Wentzell, B. Walczak, Interpretation of ANOVA models using PCA to assess the effect of a maternal anticancer treatment on the mineralization of rat bones, Analytica Chimica Acta, 689 (2011) 1-7
    IF=3.757
  40. I. Stanimirova, C. Boucon, B. Walczak, Relating gas chromatographic profiles to sensory measurements describing the end products of the Maillard reaction, Talanta, 83 (2011) 1239-1246
    IF=3.257
  41. M. Daszykowski, B. Walczak, Methods for the exploratory analysis of two-dimensional chromatographic signals, Talanta 83 (2011) 1088-1097
    IF=3.257
  42. B. Walczak, M. Daszykowski, Chemometria w proteomice i metabolomice, in Proteomika i metabolomika, A. Kraj, A. Drabik, J. Silberring (Eds.), WUW, Warszawa, 2010
  43. R. Polanski, B. Walczak, Estimation of the number of true null hypotheses when conducting a multiple testing, Chemometrics and Intelligent Laboratory Systems, 104 (2010) 281-288
    IF=2.111
  44. M. Daszykowski, A. Bierczynska-Krzysik, J. Silberring, B. Walczak, Avoiding spots detection in analysis of electrophoretic gel images, Chemometrics and Intelligent Laboratory Systems, 104 (2010) 2-7
    IF=2.111
  45. M. Daszykowski, Y. Vander Heyden, C. Boucon, B. Walczak, Automated alignment of one-dimensional chromatographic fingerprints, Journal of Chromatography A, 1217 (2010) 6127-6133
    IF=4.101
  46. A.J. Charlton, M.S. Wrobel, I. Stanimirova, M. Daszykowski, H. Grundy, B. Walczak, Multivariate discrimination of wines with respect to their grape varieties and vintages, European Food Research and Technology, 231 (2010) 733-743
    IF=1.370
  47. M. Daszykowski, I. Stanimirova, B. Walczak, Robust methods in QSAR, in Recent Advances in QSAR Studies: Methods and Applications, M.T.D. Cronin, J. Leszczynski, T. Puzyn (Eds.), Springer, 2010
  48. I. Stanimirova, B. Ustun, T. Cajka, K. Riddellova, J. Hajslova, L.M.C. Buydens, B. Walczak, Tracing the geographical origin of honeys using the GCxGC-MS and pattern recognition techniques, Food Chemistry, 118 (2010) 171-176
    IF=2.696
  49. M. Daszykowski, M. Sajewicz, J. Rzepa, M. Hajnos, D. Staszek, L. Wojtal, T. Kowalska, M. Waksmundzka-Hajnos, B. Walczak, Comparative analysis of chromatographic fingerprints of twenty different sage (Salvia L.) species, Acta Chromatographica, 4 (2009) 513-530
    IF=0.621
  50. P.K. Suder, A. Bodzon-Kulakowska, P. Mak, A. Bierczynska-Krzysik, M. Daszykowski, B. Walczak, G. Lubec, J.H. Kotlinska, J. Silberring, The proteomic analysis of primary cortical astrocyte cell culture after morphine administration, Journal of Proteome Research, 8 (2009) 4633-4640
    IF=5.684
  51. A. Bodzon-Kulakowska, P. Suder, P. Mak, A. Bierczynska-Krzysik, G. Lubec, B. Walczak, J. Kotlinska, J. Silberring, Proteomic analysis of striatal neuronal cell cultures after morphine administration, Journal of Separation Science, 32 (2009) 1200-1210
    IF=2.746
  52. M. Daszykowski, M.S. Wrobel, A. Bierczynska-Krzysik, J. Silberring, G. Lubec, B. Walczak, Automatic preprocessing of electrophoretic images, Chemometrics and Intelligent Laboratory Systems, 97 (2009) 132-140
    IF=1.940
  53. M. Daszykowski, E. Mosleth Faegestad, H. Grove, H. Martens, B. Walczak, Matching 2D gel electrophoresis images with Matlab 'Image Processing Toolbox', Chemometrics and Intelligent Laboratory Systems, 96 (2009) 188-195
    IF=1.940
  54. I. Stanimirova, A. Kita, E. Malkowski, E. John, B. Walczak, N-way exploration of environmental data obtained from sequential extraction procedure, Chemometrics and Intelligent Laboratory Systems, 96 (2009) 203-209
    IF=1.940
  55. S.D. Brown, R. Tauler, B. Walczak, Comprehensive Chemometrics, a four-set volume, Elsevier, Amsterdam, 2009
  56. M. Daszykowski, B. Walczak, Density-based clustering methods, S.D. Brown, R. Tauler, B. Walczak, Eds., in "Comprehensive Chemometrics", vol. 2, Elsevier, 2009, pp. 635-654
  57. M. Daszykowski, B. Walczak, Analiza czynnikow glownych i inne metody eksploracji danych, in A. Parczewski and D. Zuba, eds., Chemometria w analityce, IES, Krakow 2008 (ISBN 83-87425-13-3)
  58. I. Stanimirova, M. Daszykowski, B. Walczak, Metody uczenia z nadzorem - kalibracja, dyskryminacja i klasyfikacja, in A. Parczewski and D. Zuba, eds., Chemometria w analityce, IES, Krak??2008 (ISBN 83-87425-13-3)
  59. M. Daszykowski, M.S. Wrobel, H. Czarnik-Matusewicz, B. Walczak, Near-infrared reflectance spectroscopy and multivariate calibration techniques applied to model the protein, fiber and fat contents in rapeseed meal, The Analyst, 133 (2008) 1523-1531
    IF=3.761
  60. T.R.M. De Beer, C. Bodson, B. Dejaegher, B. Walczak, P. Vercruysse, A. Burggraeve, A. Lemos, L. Delattre, Y. Vander Heyden, J.P. Remon, C. Vervaet, W.R.G. Baeyens, Raman spectroscopy as a process analytical technology (PAT) tool for the in-line monitoring and understanding of a powder blending process, Journal of Pharmaceutical and Biomedical Analysis, 48 (2008) 772-779
    IF=2.629
  61. M. Daszykowski, M. Hawryl, M. Waksmundzka-Hajnos, B. Walczak, Identification of similar and orthogonal chromatographic thin layer systems for two-dimensional separations of flavonoids and their analogues, Acta Chromatographica, 20 (2008) 283-307
    IF=0.621
  62. I. Stanimirova, B. Walczak, Classification of data with missing elements and outliers, Talanta, 76 (2008) 602-609
    IF=3.374
  63. T. Czekaj, W. Wu, B. Walczak, Classification of genomic data: some aspects of feature selection, Talanta, 76 (2008) 564-574
    IF=3.206
  64. M. Daszykowski, R. Danielsson, B. Walczak, No-alignment-strategies for exploring a set of two-way data tables obtained from capillary electrophoresis-mass spectrometry, Journal of Chromatography A, 1192 (2008) 157-165
    IF=3.641
  65. I. Stanimirova, A. Kubik, B. Walczak, J.W. Einax, Discrimination of biofilm samples using pattern recognition techniques, Analytical and Bioanalytical Chemistry, 390 (2008) 1273-1282 -> get pdf
    IF=3.328
  66. M. Daszykowski, B. Walczak, Target selection for alignment of chromatographic signals obtained using monochannel detectors, Journal of Chromatography A, 1176 (2007) 1-11*
    IF=3.641
  67. M. Daszykowski, Y. Vander Heyden, B. Walczak, Robust partial least squares model for prediction of green tea antioxidant capacity from chromatograms, Journal of Chromatography A, 1176 (2007) 12-18*
    IF=3.641
  68. E.M. Faergestad, M. Rye, B. Walczak, L. Gidskehaug, J.P. Wold, H. Grove, X. Jia, K. Hollung, U.G. Indahl, F. Westad, F. van den Berg, H. Martens, Pixel-based analysis of multiple images for the identification of changes: A novel approach applied to unravel proteome patters of 2-D electrophoresis gel images, Proteomics, 7 (2007) 3450-3461
    IF=5.479
  69. I. Stanimirova, M. Polowniak, R. Skorek, A. Kita, E. John, F. Buhl, B. Walczak, Chemometric analysis of the water purification process data, Talanta, 74 (2007) 153-162
    IF=3.374
  70. M. Daszykowski, W. Wu, A.W. Nicholls, R.J. Ball, T. Czekaj, B. Walczak, Identifying potential biomarkers in LC-MS data, Journal of Chemometrics, 21 (2007) 292-302*
    IF=1.367
  71. M. Daszykowski, I. Stanimirova, A. Bodzon-Kulakowska, J. Silberring, G. Lubec, B. Walczak, The start-to-end processing of two-dimensional gel electrophoretic images, Journal of Chromatography A, 1158 (2007) 306-317
    IF=3.641
  72. M. Daszykowski, K. Kaczmarek, I. Stanimirova, Y. Vander Heyden, B. Walczak, Robust SIMCA - bounding influence of outliers, Chemometrics and Intelligent Laboratory Systems, 87 (2007) 121-129*
    IF=2.450
  73. I. Stanimirova, M. Daszykowski, B. Walczak, Dealing with missing values and outliers in principal component analysis, Talanta, 72 (2007) 172-178*
    IF=3.374
  74. M. Daszykowski, S. Serneels, K. Kaczmarek, P. Van Espen, C. Croux, B. Walczak, TOMCAT: a MATLAB toolbox for multivariate calibration techniques, Chemometrics and Intelligent Laboratory Systems, 85 (2007) 269-277*
    IF=2.063
  75. M. Daszykowski, K. Kaczmarek, Y. Vander Heyden, B. Walczak, Robust statistics in data analysis - a review. Basic concepts, Chemometrics and Intelligent Laboratory Systems, 85 (2007) 203-219*
    IF=2.063
  76. I. Stanimirova, S. Serneels, P.J. Van Espen, B. Walczak, How to construct a multiple regression model for data with missing elements and outlying objects, Analytica Chimica Acta, 581 (2007) 324-332
    IF=3.186
  77. M. Daszykowski, B. Walczak, Use and abuse of chemometrics in chromatography, Trends in Analytical Chemistry, 25 (2006) 1081-1096
    IF=5.068
  78. X. Capron, B. Walczak, O.E. de Noord, D.L. Massart, A modification of ICOMP criterion for estimation of PCR model complexity, Journal of Chemometrics, 19 (2005) 308-316
    IF=1.875
  79. T. Czekaj, W. Wu, B. Walczak, About kernel latent variable approaches and SVM, Journal of Chemometrics, 19 (2005) 341-354
    IF=1.875
  80. B. Walczak, Book Review: Statistical treatment of analytical data, Zeev B. Alfassi, Zvi Boger and Yigal Ronen, Blackwell Publishing, Oxford, UK, 2004, 272 pages, ISBN 0-63-205367-4, Trends in Analytical Chemistry, 24 (2005) V
    IF=4.088
  81. M. Daszykowski, I. Stanimirova, B. Walczak, F. Daeyaert, M.R. de Jonge, J. Heeres, L.M.H. Koymans, P.J. Lewi, H.M. Vinkers, P.A. Janssen, D.L. Massart, Improving QSAR models for biological activity of HIV Reverse Transcriptase inhibitors: Aspects of outlier detection and uninformative variable elimination, Talanta, 68 (2005) 54-60
    IF=2.391
  82. M. Daszykowski, I. Stanimirova, B. Walczak, D. Coomans, Explaining a presence of groups in analytical data in terms of original variables, Chemometrics and Intelligent Laboratory Systems, 78 (2005) 19-29
    IF=1.770
  83. I. Stanimirova, B. Walczak, D.L. Massart, Multiple Factor Analysis in environmental chemistry, Analytica Chimica Acta, 545 (2005) 1-12
    IF=2.760
  84. B. Walczak, W. Wu, Fuzzy warping of chromatograms, Chemometrics and Intelligent Laboratory Systems, 77 (2005) 173-180
    IF=1.770
  85. X. Capron, B. Walczak, O.E. de Noord, D.L. Massart, Selection and weighting of samples in multivariate regression model updating, Chemometrics and Intelligent Laboratory Systems, 76 (2005) 205-214
    IF=1.770
  86. K. Kaczmarek, B. Walczak, S. de Jong, B.G.M. Vandeginste, Baseline reduction in two dimensional gel electrophoresis images, Acta Chromatographica, 15 (2005) 82-96 ->get pdf
    IF=0.500
  87. F. Questier, R. Put, D. Coomans, B. Walczak, Y. Vander Heyden, The use of CART and multivariate regression trees for supervised and unsupervised feature selection, Chemometrics and Intelligent Laboratory Systems, 76 (2005) 45-54
    IF=1.770
  88. F. Estienne, F. Despagne, B. Walczak, O.E. de Noord, D.L. Massart, A comparison of multivariate calibration techniques applied to experimental NIR data sets. Part III: Robustness against instrumental perturbation conditions, Chemometrics and Intelligent Laboratory Systems, 73 (2004) 207-218
    IF=1.899
  89. M. Daszykowski, B. Walczak, D.L. Massart, Density-based clustering for exploration of analytical data, Analytical and Bioanalytical Chemistry, 380 (2004) 370-372 (invited paper for Special Issue on Chemometrics in Analytical Chemistry)
    IF=2.098
  90. I. Stanimirova, B. Walczak, D.L. Massart, V. Simeonov, C.A. Saby, E. Di Crescenzo, STATIS, a 3-way method for data analysis. Application to environmental data, Chemometrics and Intelligent Laboratory Systems, 73 (2004) 219-233
    IF=1.899
  91. I. Stanimirova, B. Walczak, D.L. Massart, V. Simeonov, A comparison between two robust PCA algorithms, Chemometrics and Intelligent Laboratory Systems, 71 (2004) 83-95
    IF=1.899
  92. Q.-S. Xu, M. Daszykowski, B. Walczak, F. Daeyaert, M.R. de Jonge, J. Heeres, L.M.H. Koymans, P.J. Lewi, H.M. Vinkers, P.A. Janssen, D.L. Massart, Multivariate Adaptive Regression Splines - studies of HIV reverse transcriptase inhibitors, Chemometrics and Intelligent Laboratory Systems, 72 (2004) 27-34
    IF=1.899
  93. M. Daszykowski, B. Walczak, Q.-S. Xu, F. Daeyaert, M.R. de Jonge, J. Heeres, L.M.H. Koymans, P.J. Lewi, H.M. Vinkers, P.A. Janssen, D.L. Massart, Classification and Regression Trees - studies of HIV Reverse Transcriptase Inhibitors, Journal of Chemical Information and Computer Sciences, 44 (2004) 716-726
    IF=2.810
  94. K. Kaczmarek, B. Walczak, S. de Jong, B.G.M Vandeginste, Preprocessing of two-dimensional gel electrophoresis images, Proteomics, 4 (2004) 2377-2389
    IF=5.766
  95. A. Smolinski, B. Walczak, J.W. Einax, Robust Multivariate Calibration in Environmental Studies, Analytical Letters, 36 (2003) 2317-2336
    IF=0.929
  96. K. Kaczmarek, B. Walczak, S. de Jong, B.G.M. Vandeginste, Matching of 2D gel electrophoresis images, Journal of Chemical Information and Computer Sciences, 43 (2003) 978-986
    IF=3.078
  97. K. Kaczmarek, B. Walczak, S. de Jong, B.G.M. Vandeginste, Comparison of image transformations methods used in matching of 2D gel electrophoresis images, Acta Chromaptographica, 13 (2003) 7-21 -> get full paper
  98. M. Daszykowski, B. Walczak, D.L. Massart, Projection methods in chemistry, Chemometrics and Intelligent Laboratory Systems, 65 (2003) 97-112
    IF=2.229
  99. B. Walczak, K. Kaczmarek, Zautomatyzowane dopasowywanie obrazu dwuwymiarowej elektroforezy zelowej, Materiały Konferencyjne II Konferencji "Chemometria - metody i zastosowania", Zakopane, 16-19.10.2003; Wydawnictwo Instytutu Ekspertyz Sadowych, Krakow 2003, p. 55-77
  100. M. Daszykowski, B. Walczak, D.L. Massart, A journey into low-dimensional spaces with Autoassociative Neural Networks, Talanta, 59 (2003) 1095-1105
    IF=2.091
  101. B. Walczak, M. Daszykowski, Metody kompresji i wizualizacji wielowymiarowych danych chemicznych, Proceedings II Conference "Chemometria - metody i zastosowania", Cracow (2003) 78-99
  102. K. Kaczmarek, B. Walczak, S. de Jong, B.G.M. Vandeginste, Feature based fuzzy matching of 2D gel electrophoresis images, Journal of Chemical Information and Computer Sciences, 42 (2002) 1431-1442
    IF=2.902
  103. M. Daszykowski, B. Walczak, D.L. Massart, Looking for Natural Patterns in Analytical Data. 2. Tracing Local Density with OPTICS, Journal of Chemical Information and Computer Sciences, 42 (2002) 500-507
    IF=2.902
  104. M. Daszykowski, B. Walczak, D.L. Massart, Representative subset selection, Analytica Chimica Acta, 468 (2002) 91-103
    IF=2.114
  105. M. Daszykowski, B. Walczak, D.L. Massart, On the optimal partitioning of data with K-means, Growing K-means, Neural Gas and Growing Neural Gas, Journal of Chemical Information and Computer Sciences, 42 (2002) 1378-1389
    IF=2.902
  106. A. Smolinski, B. Walczak, J.W. Einax, Hierarchical clustering extended with visual complements for interpretation of environmental data set, Chemometrics and Intelligent Laboratory Systems, 64 (2002) 45-54
    IF=1.841
  107. F. Questier, Q. Guo, B. Walczak, D.L. Massart, C. Boucon, S. de Jong, The Neural Gas network for classifying analytical data, Chemometrics and Intelligent Laboratory Systems, 61 (2002) 105-121
    IF=1.841
  108. F. Questier, I. Arnaut-Rollier, B. Walczak, D.L. Massart, Application of rough set theory to feature selection for unsupervised clustering, Chemometrics and Intelligent Laboratory Systems, 63 (2002) 155-167
    IF=1.841
  109. F. Questier, B. Walczak, D.L. Massart, Feature selection for hierarchical clustering, Analytica Chimica Acta, 466 (2002) 311-324
    IF=2.114
  110. V. Pravdova, B. Walczak, D.L. Massart, A comparison of two algorithms for warping of analytical signals, Analytica Chimica Acta, 456 (2002) 77-92
    IF=2.114
  111. E. Adams, B. Walczak, C. Vervaet, P.G. Risha, D.L. Massart, PCA of dissolution data with missing values, International Journal of Pharmaceutics, 234 (2002) 169-178
    IF=1.419
  112. A. Smolinski, B. Walczak, Exploratory analysis of chromatographic data sets with missing elements. Initialization of Expectation-Maximization algorithm, Acta Chromatographica, 12 (2002) 30-48 -> get full paper
  113. A. Kuczynska, B. Walczak, Assessment of the homogenity of chromatographic peaks. Part 1. Basic concepts and examples, Acta Chromatographica, 12 (2002) 11-29 -> get full paper
  114. V. Pravdova, C. Boucon, S. de Jong, B. Walczak, D.L. Massart, Three-way principal component analysis applied to food analysis: an example, Analytica Chimica Acta, 462 (2002) 133-148
    IF=2.114
  115. A. Smolinski, B. Walczak, J.W. Einax, Exploratory analysis of data sets with missing elements and outliers, Chemosphere, 49 (2002) 233-245
    IF=1.181
  116. M. Daszykowski, B. Walczak, D.L. Massart, Looking for Natural Patterns in Data. Part 1: Density Based Approach, Chemometrics and Intelligent Laboratory Systems, 56 (2001) 83-92
    IF=1.412
  117. V. Pravdova, B. Walczak, D.L. Massart, H. Robberecht, R. Van Cauwenbergh, P. Hendrix, H. Deelstra, Three-way PCA for the visualization of trace elemental patterns in vegetables after different cooking procedures, Journal of Food Composition and Analysis, 14 (2001) 207-225
  118. V. Pravdova, B. Walczak, D.L. Massart, S. Kawano, K. Toyoda, R. Tsenkova, Calibration of somatic cell count in milk based on NIR spectrocsopy, Analytica Chimica Acta, 450 (2001) 131-141
    IF=2.073
  119. V. Pravdova, F. Estienne, B. Walczak, D.L. Massart, Robust version of TUCKER3 model, Chemometrics and Intelligent Laboratory Systems, 59 (2001) 75-88
    IF=1.412
  120. V. Simeonov, P. Barbieri, B. Walczak, D.L. Massart, S. Tsakovski, Environmetric modeling of a potable water data set, Toxicological and Environmental Chemistry, 79 (2001) 55-72
  121. B. Walczak, D.L. Massart, Dealing with missing data. Part 1, Chemometrics and Intelligent Laboratory Systems, 58 (2001) 15-17
    IF=1.412
  122. B. Walczak, D.L. Massart, Dealing with missing data. Part 2, Chemometrics and Intelligent Laboratory Systems, 58 (2001) 29-42
    IF=1.412
  123. C. Perrin, B. Walczak, D.L. Massart, The use of wavelets for signal denoising in capillary electrophoresis, Analytical Chemistry, 73 (2001) 4903-4917
    IF=4.532
  124. F. Estienne, L. Pasti, V. Centner, B. Walczak, F. Despagne, D. Jouan Rimbaud, O.E. de Noord, D.L. Massart, A comparison of multivariate calibration techniques applied to experimental NIR data sets. Part II: predictive ability under extrapolation conditions, Chemometrics and Intelligent Laboratory Systems, 58 (2001) 195-211
    IF=1.412
  125. V. Schoonjans, F. Questier, A. P. Borosy, B. Walczak, D.L. Massart, Use of mass spectrometry for assessing similarity/diversity of natural products with unknown chemical structures, Journal of Pharmaceutical and Biochemical Analysis, 21 (2000) 1197-1214
  126. B. Walczak, D.L. Massart, Local modelling with Radial Basis Functions Networks, Chemometrics and Intelligent Laboratory Systems, 51 (2000) 219-238
  127. V. Centner, J. Verdu-Andres, B. Walczak, D. Joun-Rimbaud, F. Despagne, O. de Nord, A comparison of multivariate calibration techniques applied to experimental NIR data sets, Applied Spectroscopy, 54 (2000) 608-623
  128. J. Polanski, B. Walczak, Comparative molecular surface analysis (COMSA): a novel tool for molecular design, Computers and Chemistry, 24 (2000) 615-625
  129. J. Polanski, B. Walczak, R. Gieleciak, S. jkaszyk, Self-organizing neural networks for modeling 3D QSAR - a comparative study, Acta Poloniae Pharmaceutica - Drug Research, 57 (2000) 76-79
  130. B. Walczak, D.L. Massart, Joint basis and joint best-basis for data sets, in B. Walczak (ed.), Wavelets in Chemistry, Elsevier, Amsterdam 2000
  131. B. Walczak, J.P. Radomski, Wavelet bases for IR library compression, searching and reconstruction, in B. Walczak (ed.), Wavelets in Chemistry, Elsevier, Amsterdam 2000
  132. B. Walczak, D.L. Massart, Calibration in wavelet domain, in B. Walczak (ed.), Wavelets in Chemistry, Elsevier, Amsterdam 2000
  133. R. De Maesschalck, F. Estienne, J. Verdu-Andres, A. Candolfi, V. Center, F. Despagne, D. Jouan-Rimbaud, B. Walczak, D.L. Massart, S. de Jong, O.E. Noord, C. Puel, B.M.G. Vandeginste, The development of calibration models for spectroscopic data using Principal Component Regression, Internet Journal of Chemistry, 2 (1999) 19
  134. B. Walczak, D.L. Massart, Rought set theory, Chemometrics and Intelligent Laboratory Systems, 47 (1999) 1-16
  135. L. Pasti, B. Walczak, D.L. Massart, P. Reschiglian, Optimization of signal denoising in wavelet transform (DWT), Chemometrics and Intelligent Laboratory Systems, 48 (1999) 21-34
  136. B. Walczak, Feedback from data, "Feedback from the Data" in: "MultiComponent Reactions & Combinatorial Chemistry" (Proceedings of the German-Polish Workshop, University of Technology, Rzeszow, Poland; editors: Zdzislaw S. Hippe and Ivar K. Ugi); Oficyna Wydawnicza Politechniki Rzeszowskiej, Rzesz??Poland, 1998; pp. 249-266
  137. B. Walczak, D.L. Massart, Multiple outlier detection revisited, Chemometrics and Intelligent Laboratory Systems, 41 (1998) 1-15
  138. F. Despagne, B. Walczak, D.L. Massart, Standardization of near-Infrared spectra using Neural Networks, Applied Spectroscopy, 52 (1998) 732-745
  139. B. Walczak, Applications of Neural Networks and Neuro-Fuzzy Systems in chemistry, Proceedings of The Third Conference 'Neural Networks and Their Applications', Kule/Czestochwa 14-18.10.1997
  140. B. Walczak, D.L. Massart, Wavelets - something for analytical chemistry?, Trends in Analytical Chemistry, 16 (1997) 451-463
  141. B. Walczak, D.L. Massart, Wavelet packet transform applied to a set of signals: a new approach to the best-basis selection, Chemometrics and Intelligent Laboratory Systems, 38 (1997) 39-50
  142. D. Jouan-Rimbaud, B. Walczak, R. Poppi, O.E. de Noord, D.L. Massart, Application of wavelet transform to extract the relevant component from spectral data for multivariate calibration, Analytical Chemistry, 69 (1997) 4317-4323
  143. S. Inghelbrecht, J.-P. Remon, P.F. de Aguiar, B. Walczak, D.L. Massart, H. Vermeersch, P. De Backer, Instrumentation of a roll compactor and the evaluation of the parameter settings by neural networks, Journal of Pharmaceutical Research, 148 (1997) 103-115
  144. B. Walczak, D.L. Massart, Noise supression and signal compression using wavelet packet transform, Chemometrics and Intelligent Laboratory Systems, 36 (1997) 81-94
  145. B. Walczak, E. Bouvresse, D.L. Massart, Standardization of near-infrared spectra in the wavelet domain, Chemometrics and Intelligent Laboratory Systems, 36 (1997) 41-51
  146. W. Wu, B. Walczak, W. Penninckx, D.L. Massart, Feature reduction by Fourier transform in pattern recognition of NIR data, Analytica Chimica Acta, 331 (1996) 75-83
  147. B. Walczak, D.L. Massart, Application of Radial Basis Functions - Partial Least Squares to non-linear pattern recognition problems: diagnosis of process faults, Analytica Chimica Acta, 331 (1996) 187-193
  148. B. Walczak, D.L. Massart, The Radial Basis Functions - Partial Least Squares approach as a flexible non-linear regression techniques, Analytica Chimica Acta, 331 (1996) 177-185
  149. W. Wu, Y. Mallet, B. Walczak, W. Penninckx, D. L. Massart, S. Heuerding, F. Erni, Comparison of regularized discriminant analysis, linear discriminant analysis and quadratic discriminant analysis, applied to NIR data, Analytica Chimica Acta, 326 (1996) 257-265
  150. B. Walczak, B. van den Bogaert, D.L. Massart, Application of wavelet packet transform in pattern recognition of NIR data, Analytical Chemistry, 68 (1996) 1742-1747
  151. B. Walczak, Neural networks with robust backpropagation learning algorithm, Analytica Chimica Acta, 322 (1996) 21-29
  152. W. Wu, B. Walczak, D.L. Massart, S. Heuerding, F. Erni, I.R. Last, K.A. Prebble, Artificial neural networks in classification of NIR spectral data: design of the training set, Chemometrics and Intelligent Laboratory Systems, 33 (1996) 35-46
  153. J. Toft, B. Walczak, "Kunstige nevrale nett", in "Anvendelse av kjemometri innen forskning og industri", editors: R. Nortvedt, F. Brakstad, O. M. Kvalheim, T. Lundstedt, Infometrics Publisher, Bergen - Sandviken, 1996; pp. 207-220
  154. B. Walczak, Outlier detection in bilinear calibration, Chemometrics and Intelligent Laboratory Systems, 29 (1995) 63-73
  155. B. Walczak, Outlier detection in multivariate calibration, Chemometrics and Intelligent Laboratory Systems, 28 (1995) 259-272
  156. W. Wu, B. Walczak, D.L. Massart, K.A. Prebble, I.R. Last, Spectral transformation and wavelength selection in NIR spectra classification, Analytica Chimica Acta, 315 (1995) 243-255
  157. D. Jouan-Rimbaud, B. Walczak, D.L. Massart, I. Last, K. Prebble, Comparison of multivariate methods based on latent vectors and methods based on wavelength selection for the analysis of near-infrared spectroscopic data, Analytica Chimica Acta, 304 (1995) 285-295
  158. B. Walczak, D.L. Massart, Robust principal components regression as a detection tool for outliers, Chemometrics and Intelligent Laboratory Systems, 27 (1995) 41-54
  159. B. Walczak, W. Wegscheider, Calibration of non-linear analytical systems by a neuro fuzzy approach, Chemometrics and Intelligent Laboratory Systems, 22 (1994) 199-207
  160. B. Walczak, E. Bauer-Wolf, W. Wegscheider, A neuro-fuzzy system for X-ray spectra interpretation, Microchimica Acta, 113 (1994) 153-169
  161. B. Walczak, W. Wegscheider, Non-linear modeling of chemical data by combinations of linear and neural networks methods, Analytica Chimica Acta, 283 (1993) 508-517
  162. B. Walczak, W. Lukasik, T. Kowalska, An example of CFA application in geochemistry, (in polish), Carbo-Energochemia, Ekologia, 37 (3) (1992) 70-73
  163. B. Walczak, J. Kwapulinski, Application of PCA to evaluation of air pollution with heavy metals at the territory of Katowice, (in polish), Ochrona powietrza, 4 (1992) 81-85
  164. B. Walczak, J. Kwapulinski, Application of PCA to evaluation of air pollution with heavy metals at the territory of Katowice, (in polish), Ochrona powietrza, 5 (1992) 105-110
  165. B. Walczak, Study on the mobile and stationary phase interactions in the reversed- phase liquid chromatography, Polish Journal of Chemistry, 66 (1992) 2015-2023
  166. B. Walczak, M. Dreux, J. R. Chretien, Comparison of 20 normal phase LC systems for separation of chalcones, Chromatographia, 31 (1991) 575-582
  167. B. Walczak, Separation of chalcones isomers in HPLC systems, Analytical Sciences, 7 (1991) 103-107
  168. B. Walczak, M. Dreux, J. R. Chretien, Factor analysis and experimental design in HPLC. IX. Silica vs. chemically bonded phases in normal-phase HPLC, Chromatographia, 29 (1990) 259-264
  169. B. Walczak, M. Dreux, J. R. Chretien, L. Morin-Allory, M. Lafosse, G. Felix, Factor analysis and experimental design in HPLC. VIII. Charge-transfer vs. standard phases in the NP-HPLC, J. Chromatography, 464 (1989) 237-249
  170. B. Walczak, J. Sliwiok, T. Kowalska, A kinetic study on autoxidation of the selected liquid monoolefins, La Rivista Italiana delle Sostanze Grasse, 66 (1989) 179-185
  171. B. Walczak, T. Kowalska, A stochastic approach to the kinetics of chemical reactions applied to modelling of the ethylbenzene oxidation. I. Presentation of a possibility, Oxidation Communications, 11 (1988) 253-263
  172. B. Walczak, T. Kowalska, A stochastic approach to the kinetics of chemical reactions applied to modelling of the ethylbenzene oxidation. II. A computational prediction of the influence of intermolecular interactions on the overall oxidation, Oxidation Communications, 11 (1988) 265-273
  173. B. Walczak, J. R. Chretien, M. Dreux, L. Morin-Allory, M. Lafosse, Factor analysis and experimental design in HPLC. IV. Influence of mobile phase modyfications on the selectivity of chalcones on a ODS stationary phase, Chemometrics and Intelligent Laboratory Systems, 1 (1987) 177-189
  174. B. Walczak, L. Morin-Allory, M. Lafosse, M. Dreux, J. R. Chretien, Factor analysis and experimental design in HPLC. VII. Classification of 23 reversed-phase HPLC packings and identification of factors governing selectivity, J. Chromatography, 395 (1987) 183-202
  175. B. Walczak, M. Dreux, J. R. Chretien, K. Szymoniak, M. Lafosse, L. Morin-Allory, J. P. Doucet, Factor analysis and experimental design in HPLC. I. Trends in selectivity of 53 chalcones in reversed-phase high-performance liquid chromatography on alkyl- or phenyl-bonded stationary phases, J. Chromatography, 353 (1986) 109-121
  176. B. Walczak, J. R. Chretien, M. Dreux, L. Morin-Allory, M. Lafosse, K. Szymoniak, F. Membrey, Factor analysis and experimental design in HPLC. II. Normal-phase high-performance liquid chromatography on columns of different polarities, J. Chromatography, 353 (1986) 123-137
  177. B. Walczak, L. Morin-Allory, J. R. Chretien, M. Lafosse, M. Dreux, Factor analysis and experimental design in HPLC. III. Influence of mobile phase modifications on the selectivity of chalcone on a DIOL stationary phase, Chemometrics and Intelligent Laboratory Systems, 1 (1986) 79-90
  178. B. Walczak, M. Lafosse, J. R. Chretien, M. Dreux, L. Morin-Allory, Factor analysis and experimental design in HPLC. V. Selectivity of configuration chalcone isomers on 23 reversed-phase high-performance chromatography packings, J. Chromatography, 369 (1986) 27-37
  179. J. R. Chretien, B. Walczak, L. Morin-Allory, M. Dreux, M. Lafosse, Factor analysis and experimental design in HPLC. VI. Comparison of the retention mechanism for fourteen ODS packings, J. Chromatography, 371 (1986) 253-267
  180. T. Kowalska, B. Walczak, J. Sliwiok, The importance of the liquid monoolefin structure upon the initial stages of autoxidation, La Rivista Italiana delle Sostanze Grasse, 60 (1983) 185-190
  181. T. Kowalska, B. Walczak, J. Sliwiok, A method of evaluating the influence of interactions through hydrogen bonds upon autoxidation of liquid monoolefins, La Rivista Italiana delle Sostanze Grasse, 59 (1982) 246-248
  182. J. Sliwiok, B. Walczak, T. Kowalska, Investigation of the self-association of higher fatty alcohols and acids on chromatographic sorbents, Chromatographia, 14 (1981) 197-202
  183. T. Kowalska, B. Walczak, Cellulose sorbents in investigations on self-association of higher fatty alcohols, Microchemical Journal, 26 (1981) 299-306
  184. T. Kowalska, B. Walczak, Investigation of the association of the 1-dodecene-lauryl alcohol bicomponent system, Microchemical Journal, 26 (1981) 590-596
  185. T. Kowalska, J. Sliwiok, B. Walczak, Chromatographic and spectroscopic investigation of the associative changes with the selected higher fatty alcohols, Microchemical Journal, 25 (1980) 330-337
  186. T. Kowalska, J. Sliwiok, B. Walczak, Investigation of the association of higher fatty alcohols by means of paper chromatography, Microchemical Journal, 23 (1978) 320-328
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