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#pca — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #pca, aggregated by home.social.

  1. Tom Gauld’s recent cartoon on abbreviations concisely summarises my life as an analytical chemist and data analyst. The number of #acronyms is staggering - anybody doing #PCA data reduction followed by #KNN clustering of #ICPMS data acquired following #MW digestion? #academicchatter #AnalyticalChemistry #machinelearning

    fed.brid.gy/r/https://bsky.app

  2. Tom Gauld’s recent cartoon on abbreviations concisely summarises my life as an analytical chemist and data analyst. The number of #acronyms is staggering - anybody doing #PCA data reduction followed by #KNN clustering of #ICPMS data acquired following #MW digestion? #academicchatter #AnalyticalChemistry #machinelearning

    fed.brid.gy/r/https://bsky.app

  3. Tom Gauld’s recent cartoon on abbreviations concisely summarises my life as an analytical chemist and data analyst. The number of #acronyms is staggering - anybody doing #PCA data reduction followed by #KNN clustering of #ICPMS data acquired following #MW digestion? #academicchatter #AnalyticalChemistry #machinelearning

    fed.brid.gy/r/https://bsky.app

  4. Tom Gauld’s recent cartoon on abbreviations concisely summarises my life as an analytical chemist and data analyst. The number of #acronyms is staggering - anybody doing #PCA data reduction followed by #KNN clustering of #ICPMS data acquired following #MW digestion? #academicchatter #AnalyticalChemistry #machinelearning

    fed.brid.gy/r/https://bsky.app

  5. Tom Gauld’s recent cartoon on abbreviations concisely summarises my life as an analytical chemist and data analyst. The number of #acronyms is staggering - anybody doing #PCA data reduction followed by #KNN clustering of #ICPMS data acquired following #MW digestion? #academicchatter #AnalyticalChemistry #machinelearning

    fed.brid.gy/r/https://bsky.app

  6. Iran sues US at Hague tribunal, demands war reparations for June 2025 aggression :: nournews

    The semi-official Tasnim news agency said in a Tuesday report that the Iranian complaint at the Hague-based PCA…
    #Netherlands #Nederland #NL #Europe #Europa #EU #TheHague #aggression #HAGUE #PCA #us
    europesays.com/netherlands/109

  7. Organizaciones alertan sobre crisis ambiental en Costa Rica: Crucitas es síntoma de un problema estructural

    Organizaciones alertan sobre crisis ambiental en Costa Rica: Crucitas es síntoma de un problema estructural
    San José, 08 abr (elmundo.cr) – Más de 40 organizaciones de la sociedad civil, agrupadas en el [...]

    #CostaRica #CrisisAmbiental #Crucitas #DesarrolloSostenible #GobernanzaAmbiental #MedioAmbiente #Minería #PCA #ParlamentoCívicoAmbiental #PolíticaAmbiental

    elmundo.cr/costa-rica/organiza

  8. It is insane to think that the overwhelming majority (if not all) of flexible/semiparametric/"other word of hype" data analysis methods is just glorified Principal Component Analysis with an automated procedure to filter or smooth the scree plot. 💪 #PCA
    #statistics #datascience

  9. It is insane to think that the overwhelming majority (if not all) of flexible/semiparametric/"other word of hype" data analysis methods is just glorified Principal Component Analysis with an automated procedure to filter or smooth the scree plot. 💪 #PCA #statistics #datascience

  10. Richard Salter Storrs, Congregationalist, says the gospel endeared respect for lives and property of others, lessened internecine wars, increased compassion for sick & ship-wrecked Mariners. It “constrained” people to divide their last morsel with famished travelers.

    Would those who claim to be “men of God” today, instead, warn you about sick travelers out to constrain UR family to a single morsel?

    How can you live out these ideals?
    #christian #immigration #obedience #presbyterian #pca

  11. Result of a Principal Component Analysis (PCA) created from combined median composites of Sentinel-1 and Sentinel-2 imagery — somewhere in the Sudanese desert.

    This PCA composite brings out contrasts between lithologies, structural domains, drainage patterns, and surface materials, highlighting features that are nearly invisible in standard RGB representations.

    And yes — it also happens to look stunning.

    #RemoteSensing #EarthObservation #Geology #PCA #Sentinel1 #Sentinel2 #SAR #Radar #OpenData #GIS #QGIS #Geomorphology #Geoscience #SAGAGIS #RStats #Desert #Lithology #GeoDataArt #GeoSpectralArt #Sudan #Copernicus #CopernicusSentinel

  12. Result of a Principal Component Analysis (PCA) created from combined median composites of Sentinel-1 and Sentinel-2 imagery — somewhere in the Sudanese desert.

    This PCA composite brings out contrasts between lithologies, structural domains, drainage patterns, and surface materials, highlighting features that are nearly invisible in standard RGB representations.

    And yes — it also happens to look stunning.

    #RemoteSensing #EarthObservation #Geology #PCA #Sentinel1 #Sentinel2 #SAR #Radar #OpenData #GIS #QGIS #Geomorphology #Geoscience #SAGAGIS #RStats #Desert #Lithology #GeoDataArt #GeoSpectralArt #Sudan #Copernicus #CopernicusSentinel

  13. Result of a Principal Component Analysis (PCA) created from combined median composites of Sentinel-1 and Sentinel-2 imagery — somewhere in the Sudanese desert.

    This PCA composite brings out contrasts between lithologies, structural domains, drainage patterns, and surface materials, highlighting features that are nearly invisible in standard RGB representations.

    And yes — it also happens to look stunning.

    #RemoteSensing #EarthObservation #Geology #PCA #Sentinel1 #Sentinel2 #SAR #Radar #OpenData #GIS #QGIS #Geomorphology #Geoscience #SAGAGIS #RStats #Desert #Lithology #GeoDataArt #GeoSpectralArt #Sudan #Copernicus #CopernicusSentinel

  14. Exploring large-scale landscape structures with a simple Principal Component Analysis (PCA) applied to a MODIS composite.

    The PCA reveals striking contrasts in surface materials, vegetation patterns, and terrain transitions across western Canada — from the Rocky Mountains into the prairies and the Canadian Shield.
    Even with moderate-resolution MODIS data, spectral variability produces a surprisingly rich view of regional geography and geomorphology.

    #RemoteSensing #EarthObservation #Geology #PCA #MODIS #OpenData #GIS #QGIS #Geomorphology #Geoscience #RStats #Lithology #GeoDataArt #GeoSpectralArt #BorealForest #Taiga #Canada #Alberta

  15. Result of a Principal Component Analysis (PCA) based on combined median composites of Sentinel-1 and Sentinel-2 satellite imagery — somewhere in the desert of Sudan.

    The PCA highlights contrasts between different lithologies, structural domains, and surface materials, revealing subtle geological features that are hard to distinguish in standard RGB composites.

    And yes — it also looks simply beautiful.

    #RemoteSensing #EarthObservation #Geology #PCA #Sentinel1 #Sentinel2 #Radar #OpenData #GIS #QGIS #Geomorphology #Geoscience #SAR #SAGAGIS #RStats #Desert #Lithology #GeoDataArt #GeoSpectralArt

  16. Behind the scenes of “beautiful scientific graphics”

    If you think that clean, elegant visuals in scientific reports are produced in a couple of clicks — I’m here to disappoint you. 🙂

    Here’s one of many failed attempts to visualize results based on thermodynamic modeling of geochemical processes.

    Turning raw multidimensional data into something that a human reader can intuitively grasp is a separate challenge — with dozens of input parameters and only a few truly useful outcomes.

    Good science is not only about computation, but also about communication.

    #Geochemistry #DataViz #Rstats #Clustering #EnvironmentalModelling #ScienceCommunication #PHREEQC #WaterPollution #SvystunovaGully #Contamimation #Groundwater #Infographics #PCA #Thermodynamics

  17. 🛰️ Today I’m sharing one of my favourite large-scale remote sensing experiments:
    a Principal Component Analysis (PCA) of MODIS composite data for the three central provinces of Canada (Alberta, Saskatchewan, Manitoba).

    On this map:
    - PC1 emphasizes broad ecological zones and vegetation productivity
    - PC2 highlights soil and surface moisture differences
    - PC3 captures subtle spectral variations — often linked to geology, wetlands, disturbance patterns, or local microclimates

    Even though it looks abstract, PCA is a kind of “spectral fingerprint” of the land. It summarises thousands of square kilometres into a single visual structure that shows how the Canadian Prairies and Boreal regions differ and transition into one another.

    #RemoteSensing #MODIS #Geospatial #EarthObservation #Rstats #DataVisualization #PCA #SatelliteData #Canada #Alberta #Saskatchewan #Manitoba #EnvironmentalData #GeoDataArt #GeoSpectralArt