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#PCA

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Support the Resistance<p>My son-in-law's mom is nearing her end. Since Christmas her symptoms have accelerated. She's only 62. </p><p>All forms of Alzheimer's are tragic, but even more so when it strikes a young person. </p><p><a href="https://mastodon.social/tags/Alzheimers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Alzheimers</span></a> <a href="https://mastodon.social/tags/Grief" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Grief</span></a> <a href="https://mastodon.social/tags/Poetry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Poetry</span></a> <a href="https://mastodon.social/tags/PCA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PCA</span></a> </p><p>Robert Frost - Nothing Gold Can Stay</p><p>Nature’s first green is gold,<br>Her hardest hue to hold.<br>Her early leaf’s a flower;<br>But only so an hour.<br>Then leaf subsides to leaf.<br>So Eden sank to grief,<br>So dawn goes down to day.<br>Nothing gold can stay.</p><p><a href="https://www.alz.org/alzheimers-dementia/what-is-dementia/types-of-dementia/posterior-cortical-atrophy#prevalence" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">alz.org/alzheimers-dementia/wh</span><span class="invisible">at-is-dementia/types-of-dementia/posterior-cortical-atrophy#prevalence</span></a></p>
Statistics Globe<p>To give you a sneak peek into my courses, I’ve just published a free video on YouTube that walks through a complete data project in R.</p><p>Watch the video here: <a href="https://www.youtube.com/watch?v=l2OgRdofp90" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=l2OgRdofp90</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/rstats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rstats</span></a> <a href="https://mastodon.social/tags/statistics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statistics</span></a> <a href="https://mastodon.social/tags/datascience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>datascience</span></a> <a href="https://mastodon.social/tags/dataviz" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dataviz</span></a> <a href="https://mastodon.social/tags/statisticalanalysis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statisticalanalysis</span></a> <a href="https://mastodon.social/tags/pca" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pca</span></a></p>
💧🌏 Greg Cocks<p>Multispectral Remote Sensing Expression of Lineaments and Alteration Minerals in Part of Crystalline Rock Units of Southwestern Nigeria - Implication on Gold Prospecting<br>--<br><a href="https://doi.org/10.1016/j.oreoa.2025.100091" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">doi.org/10.1016/j.oreoa.2025.1</span><span class="invisible">00091</span></a> &lt;-- shared paper<br>--<br><a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GIS</span></a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spatial</span></a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mapping</span></a> <a href="https://techhub.social/tags/ASTER" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ASTER</span></a> <a href="https://techhub.social/tags/Gold" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Gold</span></a> <a href="https://techhub.social/tags/Hydrothermal" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Hydrothermal</span></a> <a href="https://techhub.social/tags/HydrothermalAlteration" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HydrothermalAlteration</span></a> <a href="https://techhub.social/tags/Lineament" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Lineament</span></a> <a href="https://techhub.social/tags/Landsat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Landsat</span></a> <a href="https://techhub.social/tags/ETM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ETM</span></a> <a href="https://techhub.social/tags/EnhancedThematicMapper" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EnhancedThematicMapper</span></a> <a href="https://techhub.social/tags/phyllic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>phyllic</span></a> <a href="https://techhub.social/tags/Ilesha" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Ilesha</span></a> <a href="https://techhub.social/tags/schist" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>schist</span></a> <a href="https://techhub.social/tags/belt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>belt</span></a> <a href="https://techhub.social/tags/geology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geology</span></a> <a href="https://techhub.social/tags/mining" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mining</span></a> <a href="https://techhub.social/tags/Nigeria" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Nigeria</span></a> <a href="https://techhub.social/tags/naturalresources" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>naturalresources</span></a> <a href="https://techhub.social/tags/mineral" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mineral</span></a> <a href="https://techhub.social/tags/mineralresources" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mineralresources</span></a> <a href="https://techhub.social/tags/golddeposits" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>golddeposits</span></a> <a href="https://techhub.social/tags/aerogeophysical" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>aerogeophysical</span></a> <a href="https://techhub.social/tags/remotesensing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>remotesensing</span></a> <a href="https://techhub.social/tags/geophysical" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geophysical</span></a> <a href="https://techhub.social/tags/spatialanalysis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spatialanalysis</span></a> <a href="https://techhub.social/tags/geomorphology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geomorphology</span></a> <a href="https://techhub.social/tags/geomorphometry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geomorphometry</span></a> <a href="https://techhub.social/tags/alteration" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>alteration</span></a> <a href="https://techhub.social/tags/propylitic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>propylitic</span></a> <a href="https://techhub.social/tags/argillic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>argillic</span></a> <a href="https://techhub.social/tags/mineralogy" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mineralogy</span></a> <a href="https://techhub.social/tags/XRD" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>XRD</span></a> <a href="https://techhub.social/tags/structuralgeology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>structuralgeology</span></a> <a href="https://techhub.social/tags/lithology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>lithology</span></a> <a href="https://techhub.social/tags/PrincipalComponentAnalysis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PrincipalComponentAnalysis</span></a> <a href="https://techhub.social/tags/PCA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PCA</span></a> <a href="https://techhub.social/tags/prospecting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>prospecting</span></a> <a href="https://techhub.social/tags/fracture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fracture</span></a> <a href="https://techhub.social/tags/joints" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>joints</span></a> <a href="https://techhub.social/tags/faulting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>faulting</span></a> <a href="https://techhub.social/tags/Multispectral" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Multispectral</span></a> <a href="https://techhub.social/tags/Lineaments" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Lineaments</span></a> <a href="https://techhub.social/tags/Crystalline" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Crystalline</span></a></p>
Dr Micha Campbell<p>I love how PCA results differ widely depending on whether you normalise input data or not, and whether you apply it to the covariance or correlation matrix. I think figuring the correct approach out for this dataset might be a tomorrow problem. If anyone has a great go-to resource, please link me!</p><p><a href="https://fediscience.org/tags/statistics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>statistics</span></a> <a href="https://fediscience.org/tags/PCA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PCA</span></a> <a href="https://fediscience.org/tags/multivariateStatistics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>multivariateStatistics</span></a></p>
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