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- Dr Nickolay Trendafilov
Dr Nickolay Trendafilov
Research Activity
Research groups
| Name | Type | Parent Unit |
|---|---|---|
| Multivariate Statistics Research Group | Group | Faculty of Mathematics, Computing and Technology |
Publications
Journal articles
Semi-sparse PCA (2019)
Eldén, Lars and Trendafilov, Nickolay
Psychometrika ((Early Access))
Some inequalities contrasting principal component and factor analyses solutions (2019)
Adachi, Kohei and Trendafilov, Nickolay T.
Japanese Journal of Statistics and Data Science ((Early Access))
Some Mathematical Properties of the Matrix Decomposition Solution in Factor Analysis (2018-06)
Adachi, Kohei and Trendafilov, Nickolay
Psychometrika, 83(2) (pp. 407-424)
Exploratory factor analysis of large data matrices (2018)
Trendafilov, Nickolay T. and Fontanella, Sara
Statistical Analysis and Data Mining ((Early Access))
Simple Structure Detection Through Bayesian Exploratory Multidimensional IRT Models (2018)
Fontanella, Lara; Fontanella, Sara; Valentini, Pasquale and Trendafilov, Nickolay
Multivariate Behavioral Research ((Early Access))
Archetypal Analysis: Mining Weather and Climate Extremes (2017-09)
Hannachi, A. and Trendafilov, N.
Journal of Climate, 30(17) (pp. 6927-6944)
Sparse Exploratory Factor Analysis (2017-07-13)
Trendafilov, Nickolay T.; Fontanella, Sara and Adachi, Kohei
Psychometrika, 82(3) (pp. 778-794)
Sparsest factor analysis for clustering variables: a matrix decomposition approach (2017)
Adachi, Kohei and Trendafilov, Nickolay T.
Advances in Data Analysis and Classification ((Early Access))
Sparse principal component analysis subject to prespecified cardinality of loadings (2016-12)
Adachi, Kohei and Trendafilov, Nickolay T.
Computational Statistics, 31(4) (pp. 1403-1427)
Sparse PCA and investigation of multielements compositional repositories: theory and applications (2016-09)
Gallo, Michele; Trendafilov, Nickolay and Buccianti, Antonella
Environmental and Ecological Statistics, 23(3) (pp. 421-434)
Recipes for sparse LDA of horizontal data (2016)
Trendafilov, Nickolay T. and Gebru, Tsegay Gebrehiwot
METRON, 74 (pp. 207-221)
Sparse versus simple structure loadings (2015-09)
Trendafilov, Nickolay T. and Adachi, Kohei
Psychometrika, 80(3) (pp. 776-790)
From simple structure to sparse components: a review (2014-06)
Trendafilov, Nickolay T.
Computational Statistics, 29(3-4) (pp. 431-454)
Sparse matrices in data analysis (2014-06)
Trendafilov, Nickolay; Kleinsteuber, Martin and Zou, Hui
Computational Statistics, 29(3-4) (pp. 403-405)
A clustering approach to interpretable principal components (2013-12-12)
Enki, Doyo G.; Trendafilov, Nickolay T. and Jolliffe, Ian T.
Journal of Applied Statistics, 40(3) (pp. 583-599)
Exploratory factor and principal component analyses: some new aspects (2013-03)
Trendafilov, Nickolay; Unkel, Steffen and Krzanowski, Wojtek
Statistics and Computing, 23(2) (pp. 209-220)
Zig-zag exploratory factor analysis with more variables than observations (2013-02)
Unkel, Steffen and Trendafilov, Nickolay T.
Computational Statistics, 28(1) (pp. 107-125)
Dindscal: direct INDSCAL (2012)
Trendafilov, Nickolay
Statistics and Computing, 22(2) (pp. 445-454)
Sparse principal components by semi-partition clustering (2012)
Enki, Doyo G. and Trendafilov, Nickolay T.
Computational Statistics, 27(4) (pp. 605-626)
Independent component analysis for three-way data with an application from atmospheric science (2011)
Unkel, Steffen; Hannachi, Abdel; Trendafilov, Nickolay T. and Jolliffe, Ian T.
Journal of Agricultural, Biological, and Environmental Statistics, 16(3) (pp. 319-338)
Exploratory factor analysis of data matrices with more variables than observations (2011)
Trendafilov, Nickolay T. and Unkel, Steffen
Journal of Computational and Graphical Statistics, 20(4) (pp. 874-891)
A majorization algorithm for simultaneous parameter estimation in robust exploratory factor analysis (2010-12-01)
Unkel, S. and Trendafilov, N. T.
Computational Statistics and Data Analysis, 54(12) (pp. 3348-3358)
Stepwise estimation of common principal components (2010-12-01)
Trendafilov, Nickolay
Computational Statistics and Data Analysis, 54(12) (pp. 3446-3457)
Independent exploratory factor analysis with application to atmospheric science data (2010-11)
Unkel, Steffen; Trendafilov, Nickolay T.; Hannachi, Abdel and Jolliffe, Ian T.
Journal of Applied Statistics, 37(11) (pp. 1847-1862)
Eco-effcency: concept, approaches and assessment (2010-09-29)
Kostova, Snezhanka; Trendafilov, Nickolay; Popova, Silviya and Georgieva, Nonka
Bulgarian Journal of Meteorology and Hydrology, 15(1) (pp. 118-128)
Simultaneous parameter estimation in exploratory factor analysis: an expository review (2010)
Unkel, Steffen and Trendafilov, Nickolay T.
International Statistical Review, 78(3) (pp. 363-382)
Eco-efficiency: concept, approaches and assessment (2010)
Kostova, Snezhanka; Trendafilov, Nickolay; Popova, Silviya and Georgieva, Nonka
Bulgarian Journal of Meteorology and Hydrology, 15(1) (pp. 118-128)
Independent component analysis of climate data: a new look at EOF rotation (2009-06)
Hannachi, A.; Unkel, S.; Trendafilov, N. T. and Joliffe, I. T.
Journal of Climate, 22(11) (pp. 2797-2812)
Simple and interpretable discrimination (2009)
Trendafilov, N. T. and Vines, K.
Computational Statistics and Data Analysis, 53(4) (pp. 979-989)
DALASS: Variable selection in discriminant analysis via the LASSO (2007-05)
Trendafilov, Nickolay T. and Jolliffe, Ian T.
Computational Statistics and Data Analysis, 51(8) (pp. 3718-3736)
The Dynamical System Approach to Multivariate Data Analysis (2006-09)
Trendafilov, Nickolay T.
Journal of Computational and Graphical Statistics, 15(3) (pp. 628-650)
Projected gradient approach to the numerical solution of the SCoTLASS (2006-01-10)
Trendafilov, Nickolay T. and Jolliffe, Ian T.
Computational Statistics and Data Analysis, 50(1) (pp. 242-253)
In search of simple structures in climate: Simplifying EOFs (2006)
Hannachi, A.; Jolliffe, I. T.; Stephenson, D. B. and Trendafilov, N.
International Journal of Climatology, 26(1) (pp. 7-28)
Independent component analysis as a rotation method: A very different solution to Thurstone's box problem (2005-11)
Jennrich, Robert I. and Trendafilov, Nickolay T.
British Journal of Mathematical and Statistical Psychology, 58(2) (pp. 199-208)
Fitting the factor analysis model in ℓ1 norm (2005-05)
Trendafilov, Nickolay T.
British Journal of Mathematical and Statistical Psychology, 58(1) (pp. 19-31)
The ℓ 1 oblique procrustes problem (2004)
Trendafilov, Nickolay T. and Watson, G. A.
Statistics and Computing, 14(1) (pp. 39-51)
A modified principal component technique based on the LASSO (2003-09-01)
Jolliffe, I.T.; Trendafilov, N.T. and Uddin, M.
Journal of Computational and Graphical Statistics, 12(3) (pp. 531-547)
Dynamical system approach to factor analysis parameter estimation (2003-05)
Trendafilov, Nickolay T.
British Journal of Mathematical and Statistical Psychology, 56(1) (pp. 27-46)
On the ℓ1 Procrustes problem (2003)
Trendafilov, Nickolay T.
Future Generation Computer Systems, 19(7) (pp. 1177-1186)
The multimode Procrustes problem (2002-07-01)
Trendafilov, Nickolay T. and Lippert, Ross A.
Linear Algebra and its Applications, 349(1-3) (pp. 245-264)
GIPSCAL revisited. A projected gradient approach (2002)
Trendafilov, Nickolay T.
Statistics and Computing, 12(2) (pp. 135-145)
The orthogonally constrained regression revisited (2001-12-01)
Chu, M.T. and Trendafilov, N.T.
Journal of Computational and Graphical Statistics, 10(4) (pp. 746-771)
A continuous-time approach to the oblique Procrustes problem (1999)
Trendafilov, Nickolay T.
Behaviormetrika, 26(2) (pp. 167-181)
On a differential equation approach to the weighted orthogonal Procrustes problem (1998)
Trendafilov, Nickolay T. and Chu, Moody T.
Statistics and Computing, 8(2) (pp. 125-133)
ORTHOMAX rotation problem. a differential equation approach (1998)
Trendafilov, Nickolay T. and Chu, Moody T.
Behaviormetrika, 25(1) (pp. 13-23)
Iterative majorizing rotation to orthogonal simple structure solution (1996)
Trendafilov, Nickolay
Multivariate Behavioral Research, 31(3) (pp. 271-287)
A simple method for procrustean rotation in factor analysis using majorization theory (1994)
Trendafilov, Nickolay
Multivariate Behavioral Research, 29(4) (pp. 385-408)
Eldén, Lars and Trendafilov, Nickolay
Psychometrika ((Early Access))
Some inequalities contrasting principal component and factor analyses solutions (2019)
Adachi, Kohei and Trendafilov, Nickolay T.
Japanese Journal of Statistics and Data Science ((Early Access))
Some Mathematical Properties of the Matrix Decomposition Solution in Factor Analysis (2018-06)
Adachi, Kohei and Trendafilov, Nickolay
Psychometrika, 83(2) (pp. 407-424)
Exploratory factor analysis of large data matrices (2018)
Trendafilov, Nickolay T. and Fontanella, Sara
Statistical Analysis and Data Mining ((Early Access))
Simple Structure Detection Through Bayesian Exploratory Multidimensional IRT Models (2018)
Fontanella, Lara; Fontanella, Sara; Valentini, Pasquale and Trendafilov, Nickolay
Multivariate Behavioral Research ((Early Access))
Archetypal Analysis: Mining Weather and Climate Extremes (2017-09)
Hannachi, A. and Trendafilov, N.
Journal of Climate, 30(17) (pp. 6927-6944)
Sparse Exploratory Factor Analysis (2017-07-13)
Trendafilov, Nickolay T.; Fontanella, Sara and Adachi, Kohei
Psychometrika, 82(3) (pp. 778-794)
Sparsest factor analysis for clustering variables: a matrix decomposition approach (2017)
Adachi, Kohei and Trendafilov, Nickolay T.
Advances in Data Analysis and Classification ((Early Access))
Sparse principal component analysis subject to prespecified cardinality of loadings (2016-12)
Adachi, Kohei and Trendafilov, Nickolay T.
Computational Statistics, 31(4) (pp. 1403-1427)
Sparse PCA and investigation of multielements compositional repositories: theory and applications (2016-09)
Gallo, Michele; Trendafilov, Nickolay and Buccianti, Antonella
Environmental and Ecological Statistics, 23(3) (pp. 421-434)
Recipes for sparse LDA of horizontal data (2016)
Trendafilov, Nickolay T. and Gebru, Tsegay Gebrehiwot
METRON, 74 (pp. 207-221)
Sparse versus simple structure loadings (2015-09)
Trendafilov, Nickolay T. and Adachi, Kohei
Psychometrika, 80(3) (pp. 776-790)
From simple structure to sparse components: a review (2014-06)
Trendafilov, Nickolay T.
Computational Statistics, 29(3-4) (pp. 431-454)
Sparse matrices in data analysis (2014-06)
Trendafilov, Nickolay; Kleinsteuber, Martin and Zou, Hui
Computational Statistics, 29(3-4) (pp. 403-405)
A clustering approach to interpretable principal components (2013-12-12)
Enki, Doyo G.; Trendafilov, Nickolay T. and Jolliffe, Ian T.
Journal of Applied Statistics, 40(3) (pp. 583-599)
Exploratory factor and principal component analyses: some new aspects (2013-03)
Trendafilov, Nickolay; Unkel, Steffen and Krzanowski, Wojtek
Statistics and Computing, 23(2) (pp. 209-220)
Zig-zag exploratory factor analysis with more variables than observations (2013-02)
Unkel, Steffen and Trendafilov, Nickolay T.
Computational Statistics, 28(1) (pp. 107-125)
Dindscal: direct INDSCAL (2012)
Trendafilov, Nickolay
Statistics and Computing, 22(2) (pp. 445-454)
Sparse principal components by semi-partition clustering (2012)
Enki, Doyo G. and Trendafilov, Nickolay T.
Computational Statistics, 27(4) (pp. 605-626)
Independent component analysis for three-way data with an application from atmospheric science (2011)
Unkel, Steffen; Hannachi, Abdel; Trendafilov, Nickolay T. and Jolliffe, Ian T.
Journal of Agricultural, Biological, and Environmental Statistics, 16(3) (pp. 319-338)
Exploratory factor analysis of data matrices with more variables than observations (2011)
Trendafilov, Nickolay T. and Unkel, Steffen
Journal of Computational and Graphical Statistics, 20(4) (pp. 874-891)
A majorization algorithm for simultaneous parameter estimation in robust exploratory factor analysis (2010-12-01)
Unkel, S. and Trendafilov, N. T.
Computational Statistics and Data Analysis, 54(12) (pp. 3348-3358)
Stepwise estimation of common principal components (2010-12-01)
Trendafilov, Nickolay
Computational Statistics and Data Analysis, 54(12) (pp. 3446-3457)
Independent exploratory factor analysis with application to atmospheric science data (2010-11)
Unkel, Steffen; Trendafilov, Nickolay T.; Hannachi, Abdel and Jolliffe, Ian T.
Journal of Applied Statistics, 37(11) (pp. 1847-1862)
Eco-effcency: concept, approaches and assessment (2010-09-29)
Kostova, Snezhanka; Trendafilov, Nickolay; Popova, Silviya and Georgieva, Nonka
Bulgarian Journal of Meteorology and Hydrology, 15(1) (pp. 118-128)
Simultaneous parameter estimation in exploratory factor analysis: an expository review (2010)
Unkel, Steffen and Trendafilov, Nickolay T.
International Statistical Review, 78(3) (pp. 363-382)
Eco-efficiency: concept, approaches and assessment (2010)
Kostova, Snezhanka; Trendafilov, Nickolay; Popova, Silviya and Georgieva, Nonka
Bulgarian Journal of Meteorology and Hydrology, 15(1) (pp. 118-128)
Independent component analysis of climate data: a new look at EOF rotation (2009-06)
Hannachi, A.; Unkel, S.; Trendafilov, N. T. and Joliffe, I. T.
Journal of Climate, 22(11) (pp. 2797-2812)
Simple and interpretable discrimination (2009)
Trendafilov, N. T. and Vines, K.
Computational Statistics and Data Analysis, 53(4) (pp. 979-989)
DALASS: Variable selection in discriminant analysis via the LASSO (2007-05)
Trendafilov, Nickolay T. and Jolliffe, Ian T.
Computational Statistics and Data Analysis, 51(8) (pp. 3718-3736)
The Dynamical System Approach to Multivariate Data Analysis (2006-09)
Trendafilov, Nickolay T.
Journal of Computational and Graphical Statistics, 15(3) (pp. 628-650)
Projected gradient approach to the numerical solution of the SCoTLASS (2006-01-10)
Trendafilov, Nickolay T. and Jolliffe, Ian T.
Computational Statistics and Data Analysis, 50(1) (pp. 242-253)
In search of simple structures in climate: Simplifying EOFs (2006)
Hannachi, A.; Jolliffe, I. T.; Stephenson, D. B. and Trendafilov, N.
International Journal of Climatology, 26(1) (pp. 7-28)
Independent component analysis as a rotation method: A very different solution to Thurstone's box problem (2005-11)
Jennrich, Robert I. and Trendafilov, Nickolay T.
British Journal of Mathematical and Statistical Psychology, 58(2) (pp. 199-208)
Fitting the factor analysis model in ℓ1 norm (2005-05)
Trendafilov, Nickolay T.
British Journal of Mathematical and Statistical Psychology, 58(1) (pp. 19-31)
The ℓ 1 oblique procrustes problem (2004)
Trendafilov, Nickolay T. and Watson, G. A.
Statistics and Computing, 14(1) (pp. 39-51)
A modified principal component technique based on the LASSO (2003-09-01)
Jolliffe, I.T.; Trendafilov, N.T. and Uddin, M.
Journal of Computational and Graphical Statistics, 12(3) (pp. 531-547)
Dynamical system approach to factor analysis parameter estimation (2003-05)
Trendafilov, Nickolay T.
British Journal of Mathematical and Statistical Psychology, 56(1) (pp. 27-46)
On the ℓ1 Procrustes problem (2003)
Trendafilov, Nickolay T.
Future Generation Computer Systems, 19(7) (pp. 1177-1186)
The multimode Procrustes problem (2002-07-01)
Trendafilov, Nickolay T. and Lippert, Ross A.
Linear Algebra and its Applications, 349(1-3) (pp. 245-264)
GIPSCAL revisited. A projected gradient approach (2002)
Trendafilov, Nickolay T.
Statistics and Computing, 12(2) (pp. 135-145)
The orthogonally constrained regression revisited (2001-12-01)
Chu, M.T. and Trendafilov, N.T.
Journal of Computational and Graphical Statistics, 10(4) (pp. 746-771)
A continuous-time approach to the oblique Procrustes problem (1999)
Trendafilov, Nickolay T.
Behaviormetrika, 26(2) (pp. 167-181)
On a differential equation approach to the weighted orthogonal Procrustes problem (1998)
Trendafilov, Nickolay T. and Chu, Moody T.
Statistics and Computing, 8(2) (pp. 125-133)
ORTHOMAX rotation problem. a differential equation approach (1998)
Trendafilov, Nickolay T. and Chu, Moody T.
Behaviormetrika, 25(1) (pp. 13-23)
Iterative majorizing rotation to orthogonal simple structure solution (1996)
Trendafilov, Nickolay
Multivariate Behavioral Research, 31(3) (pp. 271-287)
A simple method for procrustean rotation in factor analysis using majorization theory (1994)
Trendafilov, Nickolay
Multivariate Behavioral Research, 29(4) (pp. 385-408)
Book chapters
Factor analysis as data matrix decomposition: a new approach for quasi-sphering in noisy ICA (2009)
Unkel, Steffen and Trendafilov, Nickolay
In: Adali, Tülay; Jutten, Christian; Romano, João MarcosTravassos and Barros, Allan Kardec eds. Independent Component Analysis and Signal Separation: 8th International Conference, ICA 2009, Paraty, Brazil, March 15-18, 2009. Proceedings. Lecture Notes in Computer Science (5441) (pp. 163-170)
ISBN : 978-3-642-00599-2 | Publisher : Springer | Published : Berlin
Noisy independent component analysis as a method of rotating the factor scores (2007)
Unkel, Steffen and Trendafilov, Nickolay T
In: Davies, Mike E; James, Christopher J; Abdallah, Samer A and Plumbley, Mark D eds. Independent Component Analysis and Signal Separation: 7th International Conference, ICA 2007, London, UK, September 9-12, 2007. Proceedings. Lecture Notes in Computer Science (4666) (pp. 810-817)
ISBN : 978-3-540-74493-1 | Publisher : Springer | Published : Berlin
Principal component analysis applied to harbour porpoise fatty acid data (2007)
Joliffe, I.T.; Learmouth, J.A.; Pierce, G.J.; Santos, M.B.; Trendafilov, N.; Zuur, A.F.; Ieno, E.N. and Smith, G.M.
In: Zuur, Alain F.; Ieno, Elena N. and Smith, Graham M. eds. Analysing Ecological Data. Statistics for biology and health (pp. 515-528)
ISBN : 978-0-387-45967-7 | Publisher : Springer | Published : New York
Feature extraction by the SCoTLASS: an illustrative example (2005)
Bartkowiak, Anna and Trendafilov, Nickolay
In: Klopotek, Mieczyslaw A; Wierzchen, Slawomir T. and Trojanowski, Krzysztof eds. Intelligent Information Processing and Web Mining. Advances in Intelligent and Soft Computing (31) (pp. 3-11)
ISBN : 978-3-540-25056-2 | Publisher : Springer | Published : Berlin
Orthonormality-constrained INDSCAL with nonnegative saliences (2004)
Trendafilov, Nickolay
In: Lagan'a, Antonio; Gavrilova, Marina L.; Kumer, Vipin; Mun, Youngsong; Kenneth Tan, C. J. and Gervasi, Osvaldo eds. Computational Science and Its Applications - ICCSA 2004. Lecture Notes in Computer Science (3044) (pp. 952-960)
ISBN : 9783540220565 | Publisher : Springer | Published : Berlin, Germany
Unkel, Steffen and Trendafilov, Nickolay
In: Adali, Tülay; Jutten, Christian; Romano, João MarcosTravassos and Barros, Allan Kardec eds. Independent Component Analysis and Signal Separation: 8th International Conference, ICA 2009, Paraty, Brazil, March 15-18, 2009. Proceedings. Lecture Notes in Computer Science (5441) (pp. 163-170)
ISBN : 978-3-642-00599-2 | Publisher : Springer | Published : Berlin
Noisy independent component analysis as a method of rotating the factor scores (2007)
Unkel, Steffen and Trendafilov, Nickolay T
In: Davies, Mike E; James, Christopher J; Abdallah, Samer A and Plumbley, Mark D eds. Independent Component Analysis and Signal Separation: 7th International Conference, ICA 2007, London, UK, September 9-12, 2007. Proceedings. Lecture Notes in Computer Science (4666) (pp. 810-817)
ISBN : 978-3-540-74493-1 | Publisher : Springer | Published : Berlin
Principal component analysis applied to harbour porpoise fatty acid data (2007)
Joliffe, I.T.; Learmouth, J.A.; Pierce, G.J.; Santos, M.B.; Trendafilov, N.; Zuur, A.F.; Ieno, E.N. and Smith, G.M.
In: Zuur, Alain F.; Ieno, Elena N. and Smith, Graham M. eds. Analysing Ecological Data. Statistics for biology and health (pp. 515-528)
ISBN : 978-0-387-45967-7 | Publisher : Springer | Published : New York
Feature extraction by the SCoTLASS: an illustrative example (2005)
Bartkowiak, Anna and Trendafilov, Nickolay
In: Klopotek, Mieczyslaw A; Wierzchen, Slawomir T. and Trojanowski, Krzysztof eds. Intelligent Information Processing and Web Mining. Advances in Intelligent and Soft Computing (31) (pp. 3-11)
ISBN : 978-3-540-25056-2 | Publisher : Springer | Published : Berlin
Orthonormality-constrained INDSCAL with nonnegative saliences (2004)
Trendafilov, Nickolay
In: Lagan'a, Antonio; Gavrilova, Marina L.; Kumer, Vipin; Mun, Youngsong; Kenneth Tan, C. J. and Gervasi, Osvaldo eds. Computational Science and Its Applications - ICCSA 2004. Lecture Notes in Computer Science (3044) (pp. 952-960)
ISBN : 9783540220565 | Publisher : Springer | Published : Berlin, Germany
Conference items
Sparse exploratory factor analysis (2014)
Fontanella, Sara; Trendafilov, Nickolay and Adachi, Kohei
In : COMPSTAT 2014: 21st International Conference on Computational Statistics (19 - -22 Aug 2014, Geneva, Switzerland) (pp. 281-288)
Penalty-free sparse PCA (2014)
Trendafilov, Nickolay and Adachi, Kohei
In : Proceedings of COMPSTAT 2014: 21st International Conference on Computational Statistics (Aug 19 - -22 2014, Geneva, Switzerland) (pp. 197-203)
Fontanella, Sara; Trendafilov, Nickolay and Adachi, Kohei
In : COMPSTAT 2014: 21st International Conference on Computational Statistics (19 - -22 Aug 2014, Geneva, Switzerland) (pp. 281-288)
Penalty-free sparse PCA (2014)
Trendafilov, Nickolay and Adachi, Kohei
In : Proceedings of COMPSTAT 2014: 21st International Conference on Computational Statistics (Aug 19 - -22 2014, Geneva, Switzerland) (pp. 197-203)
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