Kurt VARMUZA
Laboratory for
Chemometrics, Vienna University of Technology, Austria
Selected Posters 2007 -
2023-09-14
2023
Varmuza K.*, Dehmer M., Filzmoser P.:
Sopron (Hungary): Conferentia Chemometrica
2023, 2023-09-10 - 13 [VK:207]
Molecular descriptors based on automorphism data.
Varmuza K.*, Filzmoser P.:
Padova (Italy): XI Colloquium Chemometricum
Mediterraneum (CCM), 2023-06-27 - 30 [VKP:205]
and
Sopron (Hungary): Conferentia Chemometrica
2023, 2023-09-10 - 13 [VK:206]
Adjusted Pareto scaling.
Varmuza K.*, Filzmoser P.:
Vienna (Austria): ANAKON 2023, 2023-04-11 – 14 [VKP:204]
Adjusted Pareto scaling for
optimum prediction performance of chemometric
multivariate models.
2022
Varmuza K.:
Vienna (Austria): Austrian Chemistry
Days 2022, 2022-09-20 – 22 [VKP:203]
Extraterrestrial
material from a comet and from meteorites -
analyzed by TOF-SIMS and data evaluated by machine learning approaches.
2020
Varmuza K.*, Rados E., Herzig C., Limbeck A., Pittenauer E., Allmaier G., Filzmoser P.:
Vienna (Austria): 31st Mass Spec Forum Vienna, 2020-02-25 – 26
[VKP:202]
ICP-MS of meteorite
samples: Chemometric evaluation of diversity and
discrimination.
2019
Isnard R., Bardyn
A., Briois C.*, Fray N., Baklouti
D., Cottin H., Engrand C.,
Fischer H., Gardner E., Hornung K., Langevin Y., Lehto H., Le Roy L.,
Ligier N., Merouane S., Modica P., Orthous-Daunay F.R., Paquette J., Rynö J., Schulz R., Silén J., Siljeström S., Stenzel O., Thirkell L., Varmuza K., Zaprudin B., Kissel J., Hilchenbach M.:
19th EANA Astrobiology Conference (EANA 2019),
3 - 6 Sept. 2019, Orléans, France [VKP:201]
67P/CG Dust particles composition as measured by the COSIMA/Rosetta mass spectrometer.
Varmuza K.*, Filzmoser
P., Fray N., Cottin H., Merouane
S., Stenzel O., Kissel J., Briois C., Baklouti D., Bardyn A., Siljeström S., Silén J., Hilchenbach M.:
Conferentia Chemometrica
2019-09-08 – 12, Karcag, Hungary, http://cc2019.ttk.mta.hu/ [VKP:200]
Composition of cometary particles versus
distance to sun during sample collection - based on multivariate evaluation of
mass spectral data (Rosetta/COSIMA).
Varmuza K.*, Filzmoser
P., Hilchenbach M., Kissel
J., Stenzel O., Merouane
S., Paquette J., Hornung K., Cottin
H., Fray N., Isnard R., Engrand
C., Briois C., Thirkell L.,
Modica M., Langevin Y., Baklouti D., Bardyn A., Siljeström S., Silén J., Rynö J., Lehto H., Schulz R.:
20. Tagung Festkörperanalytik (FKA20, Conference on Solid State
Analysis), 1 - 3 July 2019, Vienna, Austria [VKP:199]
Cometary particle
surfaces - characterized by chemometric evaluation of
secondary ion mass spectra.
PDF
file with 2 pages A4.
Varmuza K.*, Filzmoser P., Ortner I., Hilchenbach M., Kissel J., Merouane S., Paquette J., Stenzel O., Engrand C., Cottin H., Fray N., Isnard R., Briois C., Thirkell L., Baklouti D., Bardyn A., Siljeström S.,
Schulz R., Silén J., Brandstätter F., Ferrière L., Koeberl C.:
16th Scandinavian Symposium on Chemometrics (SSC16), 17 – 20
June 2019, Nesbru / Oslo, Norway [VKP:198]
One-class classification for the
recognition of relevant measurements - applied to mass spectra from cometary
and meteoritic particles.
PDF file
with 8 pages.
Rados E.*, Pittenauer E., Frank J., Varmuza K., Allmaier G.:
ANAKON 2019, Gesellschaft Deutscher Chemiker, 25 - 28 March 2019, Münster, Germany [VKP:197]
Analysis of meteorites and
meteorite-like materials (terrestrial forsterite)
doped with small organic molecules by LDI-MS using three different analysers and SIMS.
PDF
file with 12 pages.
2018
Rados E.*, Pittenauer E., Frank J., Varmuza K., Allmaier G.:
22nd International Mass Spectrometry Conference 2018 (IMSC 2018), 2018-08-26 - 31, Florence, Italy [VKP:195]
A multi-vendor applicable target
system for (MA)LDI instruments with distinct performance characteristics for
the analysis of small organic molecules related to carbonaceous chondrites.
PDF
file A4. Abstract.
Picture
from Conference.
Varmuza K.*, Filzmoser P., Hoffmann I., Hilchenbach M., Kissel J., Merouane S., Paquette J., Stenzel O., Cottin H., Fray N., Isnard R., Briois C., Modica P., Thirkell L., Engrand C., Baklouti D., Langevin Y., Bardyn A., Hornung K., Siljeström S., Rynö J., Silén J., Schulz R., Brandstätter F., Ferrière
L., Koeberl C.:
Vienna (Austria): 29th Mass Spec Forum Vienna, 2018-02-20 – 22
[VKP:194]
Mass spectrometry near comet 67P (Rosetta/COSIMA).
2017
Varmuza K.*, Filzmoser P., Hoffmann
I., Walach J., Cottin H., Fray N., Briois C., Silén J., Stenzel O., Kissel J., Hilchenbach M.:
Gyöngyös-Farkasmály (Hungary): Conferentia Chemometrica
2017-09-03 – 06, http://cc2017.ttk.mta.hu
[VKP:193]
Significance of
variables for discrimination - applied to the search of organic ions in mass
spectra measured on cometary particles.
PDF
file (2.4 MB, 11 pages, incl. abstract); PDF
file A4.
Varmuza K.*, Baklouti D., Bardyn A., Cottin H., Engrand C., Filzmoser P., Fray N., Hilchenbach M., Hoffmann I., Kissel J., Modica P., Silén J., Siljeström S., Stenzel O.:
Naantali
(Finland): 15th Scandinavian Symposium on Chemometrics (SSC15), 2017-06-19 –
22. [VKP:192]
Comet dust composition
explored by chemometric methods using mass spectral
data from COSIMA/ROSETTA.
PDF
file (5.5 MB, 9 pages, incl. abstract); PDF
file A4.
Varmuza K.*, Brandstätter F., Cottin H., Engrand C., Ferrière L., Filzmoser P., Fray N., Hilchenbach M., Hoffmann I., Kissel J., Koeberl C., Modica P.,
Paquette J., Stenzel O.:
Vienna (Austria): EGU 2017, European Geosciences Union
General Assembly, http://www.egu2017.eu/, 2017-04-23 - 28. Geophysical Research
Abstracts Vol. 19, EGU2017-2545, 2017. [VKP:191]
Elemental surface composition of comet 67P grains
(Rosetta) and of carbonaceous chondrite meteorites - characterized by
multivariate mass spectral data (COSIMA).
PDF
file (0.6 MB, poster A4 and abstract)
Varmuza K.*, Brandstätter F., Cottin H., Engrand C., Ferrière L., Filzmoser P., Fray N., Hilchenbach M., Hoffmann I., Kissel J., Koeberl C., Modica P.,
Paquette J., Stenzel O.:
Tübingen (Germany): ANAKON 2017, Gesellschaft Deutscher Chemiker, 2017-04-03 - 06 [VKP:190]
Comet and meteorite particle
surface characterization by multivariate data analyses using TOF‐SIMS data from COSIMA/Rosetta.
PDF
file (1.8 MB)
2016
M. Hilchenbach, J. Kissel, R. Schulz*, Y. Langevin,
C. Briois, A. Koch, J. Silén,
D. Baklouti, A. Bardyn, H.Cottin, C. Engrand, H. Fischer,
N. Fray, A. Glasmachers, E. Grün,
G. Haerendel, H. Henkel, H. Höfner,
K. Hornung, E.K. Jessberger,
H. Lehto, K. Lehto, N. Ligier, P. Martin, S. Merouane,
P. Modica, F.R. Orthous Daunay, J. Paquette, F. Raulin,
L. Le Roy, J. Rynö, S. Siljeström,
W. Steiger, O. Stenzel, T.
Stephan, L. Thirkell, R. Thomas, K. Torkar, K. Varmuza, K.P. Wanczek, B. Zaprudin:
Pasadena, CA (USA): DPS 48 / EPSC 11
Meeting, American Astronomical Society, 2016-10-16 – 21
[VKP:189]
ROSETTA/COSIMA at comet 67P/Churyumov-Gerasimenko
- 2 years of in-situ dust analysis.
O.J. Stenzel*,
J. Paquette, M. Hilchenbach, J. Kissel,
Y. Langevin, C. Briois, A.
Koch, R. Schulz, J. Silén, N. Altobelli,
K. Altwegg, L. Colangeli,
H. Cottin, D. Baklouti, A. Bardyn, C. Engrand, H. Fischer,
N. Fray, A. Glasmachers, E. Grün,
G. Haerendel, H. Henkel, H. Höfner,
K. Hornung, E.K. Jessberger,
H. Lehto, K. Lehto, N. Ligier, Z. Lin, P. Martin, S. Merouane,
F.R. Orthous-Daunay, F. Raulin,
C. Revillet, L. Le Roy, J. Rynö,
S. Siljeström, W. Steiger,
T. Stephan, L. Thirkell, R. Thomas, K. Torkar, K. Varmuza,
K.P. Wanczek, B. Zaprudin:
Leiden
(The Netherlands): 50th ESLAB Symposium
(European Space Agency, ESA), From Giotto to Rosetta, 2016-03-14
– 18 [VKP:188]
Alkali metals in
cometary particles – what is the chemical context?
Korinek G.*, Pittenauer E., Varmuza
K., Allmaier G.:
Vienna (Austria): 27th Mass Spec Forum Vienna, 2016-02-23 – 24
[VKP:187]
LDI-RTOFMS of
organic matter in the study of meteorites.
Hoffmann I., Brandstätter F., Engrand C., Ferrière L., Filzmoser P., Hilchenbach M., Koeberl C., Varmuza K.*:
Vienna (Austria): 27th Mass Spec Forum Vienna, 2016-02-23 – 24
[VKP:186]
Meteorite classification by TOF-SIMS-chemometrics.
PDF
file (1 MB), abstract
of poster.
2015
Varmuza K.*, Hoffmann I., Filzmoser
P., Brandstätter F., Engrand C., Ferrière L., Hilchenbach M., Koeberl C., Paquette J., Silén J., Stenzel O.:
Vienna (Austria): Conference on Solid State Analytics (18.
Tagung Festkörperanalytik -
FKA18), 2015-07-06 – 07-08 [VKP:184]
Recognition of
relevant spectra in TOF-SIMS measurements on meteorite and comet grain samples
by a chemometric approach.
PDF
file (2.8 MB) of poster.
Varmuza K.*, Filzmoser P., Hilchenbach M., Hoffmann I., Kissel J., Silén J.:
Chia, Sardinia
(Italy): 14th Scandinavian Symposium on
Chemometrics (SSC14), 2015-06-14 to 06-17 [VKP:183]
Selected chemometric approaches for mass spectra from comet dust
grains (Rosetta).
PDF: see similar poster no. 184 (listed above).
Stenzel O.J.*, Varmuza K., Engrand C., Ferrière L., Brandstätter F., Koeberl C., Filzmoser P., Paquette J., Hilchenbach M.:
The Woodlands, Texas (USA): 46th Lunar and Planetary Science Conference (LPSC), 2015-03-16
to 03-20 [VKP:182]
Using meteorite samples as a test for correlation
based analysis of SIMS data from cometary grains.
PDF
file (2.2 MB) of poster.
2014
C. Engrand*, D. Baklouti, C. Briois, H. Cottin, H. Fischer, N. Fray, M.
Godard, H. Henkel, M. Hilchenbach, K. Hornung, J. Kissel, A. Koch, Y. Langevin, H. Lehto, S. Merouane, F. R. Orthous-Daunay,
J. Rynö, R. Schulz, J. Silén,
S. Siljeström, T. Stephan,
L. Thirkell, K. Varmuza:
San Francisco, CA (USA), 2014 AGU Fall Meeting of the American
Geophysical Union, 2014-12-15 to 12-19 [VKP:181]
On the inorganic composition of cometary dust from comet 67P/Churyumov-Gerasimenko, as seen by COSIMA onboard Rosetta.
M. Hilchenbach, J. Kissel, C. Briois, H. von Hoerner, Y. Langevin, R. Schulz*,
J. Silén, K. Altwegg, L. Colangeli, H. Cottin, C. Engrand, A. Glasmachers, E. Grün, G. Haerendel, H. Henkel, H.
Höfner, K. Hornung, E. K. Jessberger, A. Koch, H. Lehto, K.
Lehto, F. Raulin, L. Le Roy, J. Rynö, W. Steiger, T. Stephan, L. Thirkell, R. Thomas, K. Torkar, K. Varmuza, K. P. Wanczek:
Tucson, Arizona (USA): 46th Annual Meeting of the Division for Planetary Sciences of the American Astronomical Society (DPS-2014),
2014-11-09
to 11-14 [VKP:180]
COSIMA - Cometary Dust Analysis in the inner coma of Comet 67P/Churyumov-Gerasimenko.
Stenzel O.*, Varmuza K., Engrand C., Ferrière L., Brandstätter F., Koeberl C., Filzmoser P., Hilchenbach M.:
Helsinki (Finland): ACM 2014 (Asteroids, Comets, Meteors), 2014-06-30 to 07-04 [VKP:179]
Characterisation of meteoritic samples with the Rosetta Cosima
TOF-SIMS laboratory reference model - a covariance approach.
PDF
file (1.7 MB) of poster.
2013
Varmuza K., Dehmer M., Filzmoser P.:
Sopron (Hungary): Conferentia Chemometrica 2013,
2013-09-08 to 09-11 [VKP:178]
Empirical modeling of mass spectral features by molecular descriptors.
PDF
file (1.8 MB) of poster.
Hilchenbach M., Briois C., Cottin H., Engrand C., Hornung K., Kissel J., Krüger H., Lehto H.J., Lehto K., Silen J., Thirkell L., Varmuza K.:
The Woodlands, Texas (USA): 44th Lunar and Planetary Science Conference (LPSC), 2013-03-18
to 03-22 [VKP:177]
Laboratory
secondary ion mass spectra of cometary analog matter.
PDF
file (1.8 MB) of poster.
2012
Varmuza K., Liebmann B., Filzmoser P.:
Budapest (Hungary): 13th International Conference on
Chemometrics in Analytical Chemistry - CAC 2012,
2012-06-25
to 06-29 [VKP:176]
Repeated double
cross validation for optimization and evaluation of empirical classifiers.
PDF
file (2 MB) of poster.
Liebmann B., Todeschini R., Consonni V., Filzmoser P., Varmuza K.:
Budapest (Hungary): 13th International Conference on
Chemometrics in Analytical Chemistry - CAC 2012,
2012-06-25
to 06-29 [VKP:175]
Variable
selection by the LASSO method.
PDF
file (1 MB) of poster.
2011
Liebmann B., Friedl A., K. Varmuza:
Sümeg (Hungary): Conferentia Chemometrica 2011,
2011-09-18 to 09-21 [VKP:174]
COSMO data
and conventional molecular descriptors compared by redundancy analysis.
PDF file
(1.9 MB) of poster.
Liebmann B., Rodrigues J.F.C., Friedl A., K. Varmuza:
Sümeg (Hungary): Conferentia Chemometrica 2011,
2011-09-18 to 09-21 [VKP:173]
NIR spectroscopy
and chemometrics for ionic liquids: Lignocellulosic biomass dissolution.
PDF
file (3.7 MB) of poster.
K. Varmuza, M. Dehmer:
Sümeg (Hungary): Conferentia Chemometrica 2011,
2011-09-18 to 09-21 [VKP:172]
Uniqueness
of numerical molecular descriptors for organic compounds.
PDF
file (500 kB) of poster.
2010
K. Varmuza, P. Filzmoser, M. Hilchenbach, J. Kissel, H. Krüger, J. Silén:
Antwerp (Belgium): 12th International Conference on
Chemometrics in Analytical Chemistry - CAC 2010, 2010-10-18
to 10-21 [VKP:171]
Random projection for dimensionality reduction - applied to TOF-SIMS data.
PDF
file (201 kB) of poster.
K. Varmuza, P. Filzmoser, M. Dehmer:
Rabat (Morocco): First African-European Conference
on Chemometrics 2010, 2010-09-21 to 09-24 [VKP:170]
Statistical evaluation
of molecular descriptors used in quantitative-structure-activity relationships.
PDF file
(249 kB) of poster.
E.P. Zayas,
K. Varmuza, I. Talavera, M. Lorenzo, M.C. Vasallo:
Havana (Cuba): V Congreso Latinoamericano
de Profesionales y Estudiantes
de Ciencia y Tecnologia de los Alimentos, 2010-05-24 to 05-26 [VKP:169].
Proceedings CD, ISBN 978-959-7003-28-1.
Clasificación multivariante de rones con empleo de la espectroscopia infrarroja cercana (Spanish).
Multivariate
classification of rum employing near infrared spectroscopy.
PDF
file (Spanish, 58 kB) of poster; PDF
file (English, 8 kB) of abstract.
2009
K. Varmuza, P. Filzmoser, B. Liebmann:
Siófok (Hungary): Conferentia Chemometrica
2009, 2009-09-27 to 09-30 [VKP:168]
Random projection and
projection pursuit based PCA applied to chemical data.
PDF
file (118 kB) of poster.
B. Liebmann, A. Friedl, K. Varmuza:
Vienna (Austria): 13th Austrian Chemistry Days, 2009-08-24
to 08-27 [VKP:167]
Near-infrared
spectroscopy and chemometrics in bioethanol production.
PDF
13 pages (0.7 MB) of poster.
B. Liebmann, A. Friedl, K. Varmuza:
Loen/Stryn
(Norway): 11th
Scandinavian Symposium on Chemometrics, 2009-06-08
to 06-11 [VKP:165]
Quantitative analysis
by near-infrared spectroscopy of compounds relevant in bioethanol production.
PDF
14 pages (0.7 MB) or PDF
1 page (1.4 MB) of poster.
2008
Varmuza K.,
Dehmer M., Borgert S.:
Goslar (Germany): 4th German Conference on Chemoinformatics - 22nd CIC-Workshop,
2008-11-09 to 2008-11-11 [VKP:164].
Molecular descriptors based on entropy and the full
topological neighborhood of all atoms.
PDF file of
poster (154 kB).
Varmuza
K., Filzmoser P.:
Goslar (Germany): 4th German Conference on Chemoinformatics - 22nd CIC-Workshop,
2008-11-09 to 2008-11-11 [VKP:163].
Comparison of some linear regression methods -
available in R - for a QSPR problem.
PDF file of
poster (296 kB).
Schäning A.,
Schreiner M., Varmuza K.:
Balatonalmádi (Hungary): 4th International Symposium on
Computer Applications and Chemometrics in Analytical Chemistry - SCAC 2008,
2008-09-01 to 2008-09-04 [VKP:162].
Classification of synthetic organic pigments
from FT infrared spectral data.
PDF file
of poster (736 kB).
Liebmann B., Friedl A., Varmuza K.:
Balatonalmádi (Hungary): 4th International Symposium on
Computer Applications and Chemometrics in Analytical Chemistry - SCAC 2008,
2008-09-01 to 2008-09-04 [VKP:161].
Application of near-infrared spectroscopy and
chemometrics in bioethanol production.
PDF file
of poster (370 kB).
Varmuza
K., Filzmoser P.:
Balatonalmádi (Hungary): 4th International Symposium on
Computer Applications and Chemometrics in Analytical Chemistry - SCAC 2008,
2008-09-01 to 2008-09-04 [VKP:160].
Repeated double cross validation for estimation
of prediction errors.
PDF file of
poster (145 kB).
Krüger H., Briois
C., Engrand C., Fischer H., Hilchenbach
M., Kissel J., Martin P., Rynö
J., Stephan T., Thirkell L., Thomas R., Varmuza K.:
Montreal (Canada): 37th COSPAR Scientific Assembly,
2008-07-13 to 2008-07-20 [VKP:159].
An automatic pipeline
processing software for secondary ion time-of-flight mass spectra of
Rosetta/COSIMA.
PDF file
of poster (493 kB).
Felkel J.,
Dörr N., Leimeter T., Novotny-Farkas F., Varmuza K.:
Montpellier (France): 11th International Conference on
Chemometrics in Analytical Chemistry - CAC 2008,
2008-06-30 to 2008-07-04 (2008) [VKP:157].
Characterization of gas engine oils by IR and
chemometrics.
PDF file of
poster (118 kB).
Varmuza K.,
Dehmer M., Borgert S.:
Verbania-Intra
(Italy): MATH/CHEM/COMP 2008,
2008-06- to 2008-06-13 (2008) [VKP:156].
New topological information indices based on the full
neighborhood of all atoms.
PDF file of poster
(72 kB).
2007
Liebmann B., Friedl A., Varmuza K.:
Budapest (Hungary): Conferentia
Chemometrica 2007, 2007-09-02 to 09-07 (2007) [VKP:152].
Prediction of the heating value of biomass fuel from
IR and NIR data.
PDF file
of poster (90 kB).
Varmuza K.,
Liebmann B., Friedl A.:
Plovdiv (Bulgaria): 6th Chemistry Conference,
2007-06-20 to 06-22 (2007) [VKP:150].
Estimation of the heating value of biomass fuel
from the elemental composition and infrared data.
PDF file of poster
(144 kB).
Liebminger A., Seyfang
L., Filzmoser P., Varmuza K.:
Lappeenranta
(Finland): 10th Scandinavian
Symposium on Chemometrics, 2007-06-11 to 06-15 (2007) [VKP:149].
A new variable
selection method based on all subsets regression.
PDF file of
poster (107 kB).
Krüger H., Engrand C., Fischer
H., Hilchenbach M., Hornung K., Kissel J., Stephan T., Thirkell L., Thomas R., Trieloff
M., Varmuza K.:
Vienna (Austria): European Geosciences Union, General
Assembly 2007, 2007-04-15 to 04-20 (2007) [VKP:148].
Laboratory
calibration of Rosetta/COSIMA: Preparation for comet
67P/Churyumov-Gerasimenkov.
PDF file of poster (227
kB).