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  • Other Sources  (15)
  • Data analysis / ~ processing  (14)
  • nitrogen
  • Springer  (14)
  • American Chemical Society
  • American Institute of Physics (AIP)
  • Blackwell Publishing Ltd
  • 1
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    Optimised use of data fusion and memory‐based learning with an Austrian soil library for predictions with infrared data (2023)
    Blackwell Publishing Ltd | Oxford, UK
    Details
    Publication Date: 2023-12-12
    Description: 〈title xmlns:mml="http://www.w3.org/1998/Math/MathML"〉Abstract〈/title〉〈p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en"〉Infrared spectroscopy in the visible to near‐infrared (vis–NIR) and mid‐infrared (MIR) regions is a well‐established approach for the prediction of soil properties. Different data fusion and training approaches exist, and the optimal procedures are yet undefined and may depend on the heterogeneity present in the set and on the considered scale. The objectives were to test the usefulness of partial least squares regressions (PLSRs) for soil organic carbon (SOC), total carbon (C〈sub〉t〈/sub〉), total nitrogen (N〈sub〉t〈/sub〉) and pH using vis–NIR and MIR spectroscopy for an independent validation after standard calibration (use of a general PLSR model) or using memory‐based learning (MBL) with and without spiking for a national spectral database. Data fusion approaches were simple concatenation of spectra, outer product analysis (OPA) and model averaging. In total, 481 soils from an Austrian forest soil archive were measured in the vis–NIR and MIR regions, and regressions were calculated. Fivefold calibration‐validation approaches were carried out with a region‐related split of spectra to implement independent validations with n ranging from 47 to 99 soils in different folds. MIR predictions were generally superior over vis–NIR predictions. For all properties, optimal predictions were obtained with data fusion, with OPA and spectra concatenation outperforming model averaging. The greatest robustness of performance was found for OPA and MBL with spiking with 〈italic toggle="no"〉R〈/italic〉〈sup〉2〈/sup〉 ≥ 0.77 (N), 0.85 (SOC), 0.86 (pH) and 0.88 (C〈sub〉t〈/sub〉) in the validations of all folds. Overall, the results indicate that the combination of OPA for vis–NIR and MIR spectra with MBL and spiking has a high potential to accurately estimate properties when using large‐scale soil spectral libraries as reference data. However, the reduction of cost‐effectiveness using two spectrometers needs to be weighed against the potential increase in accuracy compared to a single MIR spectroscopy approach.〈/p〉
    Description: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
    Keywords: ddc:631.4 ; data fusion ; independent validation ; infrared spectroscopy ; MBL ; nitrogen ; outer product analysis ; pH ; soil organic carbon ; spiking ; total carbon
    Language: English
    Type: doc-type:article
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    CITATION GEO-LEO
  • 2
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    Analysis of Observed Chaotic Data (1996)
    Springer
    In:  Springer
    Details
    Publication Date: 1996
    Keywords: Textbook of mathematics ; Data analysis / ~ processing ; Textbook of geophysics ; Chaotic behaviour
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Orthonormal Wavelets (1989)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, Wavelets: Time-Frequency Methods and Phase, Berlin, Springer, vol. 22, no. 4, pp. 21-37, (ISBN 0080419208)
    Details
    Publication Date: 1989
    Keywords: Wavelet processing ; Textbook of geophysics ; Spectrum ; Data analysis / ~ processing ; noksp
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Univariate Time Series in Geosciences - Theory and Examples (2006)
    Springer
    In:  Basel, 404 pp., Springer, vol. 10, no. Subvol. b, pp. 220, (3-540-23810-7, XVII + 718 p., 220 illus.)
    Details
    Publication Date: 2006
    Description: The author introduces the statistical analysis of geophysical time series. The book includes also a chapter with an introduction to geostatistics, many examples and exercises which help the reader to work with typical problems
    Keywords: Textbook of geophysics ; Data analysis / ~ processing ; Time series analysis ; Statistical investigations ; Auto-Regressive Moving Average-process ; Geostatistics, ; Modeling, ; R ; programming ; language, ; Simulation, ; Statistical ; analysis
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Methods and Applications of Inversion (2000)
    Springer
    In:  Berlin, 306 pp., Springer, vol. 2, no. XVI:, pp. 1-14, (ISBN: 0-387-30752-4)
    Details
    Publication Date: 2000
    Keywords: Textbook of geophysics ; Textbook of geology ; Textbook of mathematics ; Data analysis / ~ processing ; Modelling ; Inversion
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    BIBLIOGRAPHY SEISMOLOGY
  • 6
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    MATLAB Recipes for Earth Sciences (2006)
    Springer
    In:  Berlin, Springer, vol. 3, no. ALEX(01)-FR-77-01, AFTAC Contract F08606-76-C-0025, pp. 329, (ISBN: 3-540-27983-0, XII + 238 p., 77 illus., 13 in colour with CD-ROM)
    Details
    Publication Date: 2006
    Description: Contents: Data Analysis in Earth Sciences - Introduction to MATLAB - Univariate Statistics - Bivariate Statistics - Time-Series Analysis - Signal Processing - Spatial Data including Digital Elevation Models - Image Processing including Processing and Georeferencing of Satellite Images - Multivariate Statistics; IfGW Uni Potsdam
    Keywords: Data analysis / ~ processing ; Modelling ; software ; Textbook of geophysics ; Statistical investigations ; digital signal analysis (also DSP) ; DSP ; Time series analysis ; Digital elevation model ; geographic ; coordinates ; Mapping ; Toolbox
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    BIBLIOGRAPHY SEISMOLOGY
  • 7
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    Geoinformatik - Modelle, Strukturen, Funktionen (1995)
    Springer
    In:  Berlin, Springer, vol. 45, pp. xii+414 pp., (ISBN 0-471-95596-5)
    Details
    Publication Date: 1995
    Keywords: GIS ; Textbook of geophysics ; geography ; data ; base ; fuzzy ; Data analysis / ~ processing ; interpolation ; SQL
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    BIBLIOGRAPHY SEISMOLOGY
  • 8
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    Geodesy: The Challenge of the Third Millennium (2003)
    Springer
    In:  New York, 473 pp., Springer, vol. 10, no. Subvol. b, pp. 220, (ISBN 3-540-43160-8)
    Details
    Publication Date: 2003
    Keywords: Geodesy ; Textbook of geodesy ; methods ; Data analysis / ~ processing ; Instruments ; Global Positioning System ; Very Long Baseline Interferometry ; InSAR ; geoid ; Gravimetry, Gravitation ; Earth rotation ; Strain ; visions ; for ; the ; future ; state ; of ; the ; science
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    BIBLIOGRAPHY SEISMOLOGY
  • 9
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    Methods and Applications of Signal Processing in Seismic Network Operations (2003)
    Springer
    In:  Berlin Heidelberg, Springer, vol. 98, no. ALEX(01)-FR-77-01, AFTAC Contract F08606-76-C-0025, pp. 95-104, (ISBN: 1-4020-1592-5)
    Details
    Publication Date: 2003
    Keywords: digital signal analysis (also DSP) ; DSP ; Seismology ; Early warning systems (earthquakes, volcanic eruptions, tsunamis etc.) ; earthquake ; warning ; Seismic networks ; Data analysis / ~ processing ; Location ; Detectors ; Time series analysis ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
  • 10
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    The SIL seismological data acquisition system - as operated in Iceland in Sweden (2003)
    Springer
    In:  Professional Paper, Methods and Applications of Signal Processing in Seismic Network Operations, Berlin Heidelberg, Springer, vol. 98, no. 16, pp. 131-148, (ISBN 0080419208)
    Details
    Publication Date: 2003
    Keywords: digital signal analysis (also DSP) ; DSP ; Seismology ; Early warning systems (earthquakes, volcanic eruptions, tsunamis etc.) ; earthquake ; warning ; Seismic networks ; Data analysis / ~ processing ; Location ; Detectors ; Time series analysis ; Seismology ; Boedvarsson ; Bodvarsson
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    BIBLIOGRAPHY SEISMOLOGY
  • 11
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    Geoinformatik - Modelle, Strukturen, Funktionen (2000)
    Springer
    In:  Berlin, Springer, vol. 45, pp. 3. erweiterte u. aktualisierte Auflage, x+419 pp., (ISBN 0-471-95596-5)
    Details
    Publication Date: 2000
    Keywords: GIS ; Textbook of geophysics ; geography ; data ; base ; fuzzy ; Data analysis / ~ processing ; interpolation ; SQL
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    BIBLIOGRAPHY SEISMOLOGY
  • 12
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    Geomatic Methods for the Analysis of Data in the Earth Sciences (2000)
    Springer
    In:  New York, Springer, vol. 31, no. 3, pp. 2-203, (ISBN 0-87590-533-1)
    Details
    Publication Date: 2000
    Keywords: Data analysis / ~ processing ; Error analysis ; Handbook of geophysics ; Handbook of geodesy ; toolbox ; Statistical investigations ; Inversion ; Non-linear effects ; aerial ; images ; Diffraction ; Tomography ; 1214 ; Geodesy ; and ; gravity ; Geopotential ; theory ; and ; determination ; 1224 ; Photogrammetry ; remote ; sensing ; 0902 ; Exploration ; geophysics ; Computational ; methods, ; seismic ; Gruen ; Grun
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    BIBLIOGRAPHY SEISMOLOGY
  • 13
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    Global Positioning System - Theory, Algorithms and Applications (2003)
    Springer
    In:  Berlin, Springer, vol. 4, no. 1, pp. 1-40, (ISBN 0-06-057199-3)
    Details
    Publication Date: 2003
    Keywords: Geodesy ; Textbook of geodesy ; Handbook of geodesy ; Data analysis / ~ processing ; KSGSoft ; program ; software ; Filter- ; Error analysis
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    BIBLIOGRAPHY SEISMOLOGY
  • 14
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    Model-driven migration in applied seismics (1990)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, Proceedings 7.Aachener Symp. für Signaltheorie, Berlin, Springer, vol. 20, no. 4, pp. 47-65, (ISBN 0080419208)
    Details
    Publication Date: 1990
    Keywords: Stacking ; seismic Migration ; seismic Migration ; Seismics (controlled source seismology) ; Data analysis / ~ processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 15
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    Microearthquake analysis at local seismic networks in Iceland and Sweden and earthquake precursors (2003)
    Springer
    In:  Bull., Open-File Rept., Methods and Applications of Signal Processing in Seismic Network Operations, Berlin Heidelberg, Springer, vol. 98, no. 16, pp. 149-172, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publication Date: 2003
    Keywords: digital signal analysis (also DSP) ; DSP ; Seismology ; Early warning systems (earthquakes, volcanic eruptions, tsunamis etc.) ; Seismic networks ; Data analysis / ~ processing ; Location ; Detectors ; Time series analysis ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
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