Shakedown Social

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screwlisp<a href="https://gamerplus.org/tags/programming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#programming</a> <a href="https://gamerplus.org/tags/engineering" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#engineering</a> <a href="https://gamerplus.org/tags/statistics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#statistics</a> <a href="https://gamerplus.org/tags/PCA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PCA</a> in <a href="https://gamerplus.org/tags/commonLisp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#commonLisp</a> <a href="https://gamerplus.org/tags/lisp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lisp</a> <a href="https://gamerplus.org/tags/blog" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#blog</a> <a href="https://gamerplus.org/tags/easy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#easy</a> <a href="https://gamerplus.org/tags/reference" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#reference</a> <a href="https://screwlisp.small-web.org/programming/lisp-principal-component-analysis/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://screwlisp.small-web.org/programming/lisp-principal-component-analysis/</a>While I am just feeding no-other-obvious-source lisp pieces of my brain to my young kitten, here is principle component analysis in common lisp using an openly available <a href="https://gamerplus.org/tags/ML" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ML</a> package <a href="https://gamerplus.org/tags/clml" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#clml</a> from a Japanese telco changing hands 15 years ago, actively developed by a lisp lone wolf up until five years ago.My demo is in english (<a href="https://gamerplus.org/tags/emacs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#emacs</a> <a href="https://gamerplus.org/tags/eev" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#eev</a> <a href="https://gamerplus.org/tags/eepitch" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#eepitch</a>) in contrast to the Japanese internals.

ferricoxideContinuing to work through <a href="https://evil.social/tags/GCP" rel="nofollow noopener noreferrer" target="_blank">#GCP</a> training – having gotten my <a href="https://evil.social/tags/ACE" rel="nofollow noopener noreferrer" target="_blank">#ACE</a>, I now need to get my <a href="https://evil.social/tags/PCA" rel="nofollow noopener noreferrer" target="_blank">#PCA</a>. At any rate, one of the training-modules was talking about data transfer times and popped up a size/rate table to show transfer-times. It instantly transported me back to when I was doing DR-related delivery-consulting. I still remember one customer being pissed when I'd finished setting up their storage-replication and declared, "well, I'll see you in about 21 days to verify that we're actually finished and functional". They were incredulous, sputtering about "how can you possibly say 21 days". I'd reminded them that I'd noted that their replication-bandwidth was objectively too small (while they had a T3, their data set was large and they couldn't get their networking people to remove the session-limits that were constraining the replication to a fraction of that T3's capability). We'd spent a couple days benchmarking and working with their networking people to try to address the discrepancy between their theoretical bandwidth and the observed bandwidth. In fairness, they probably would have been ill-advised to dedicate the entirety of the T3's bandwidth to replications — since they presumably had other projects that needed some of its bandwidth — but the amount they were able to allocate to the storage replication was way too low. I'd given them an initial transfer-time estimate, the day prior, based on my benchmarking and the first couple hours of the replication's sync-up. My return the next day was mostly to confirm that things were moving along as expected — so that I didn't have to revise my estimate (fortunately, over the intervening 16 hours, my numbers had stayed dead-on). Just to add some gas to the fire: • I reminded them that they had had the option to speed up the initial sync by seeing it with a tape-based restore – which would have required them to ship tapes from NJ to AZ, import the tapes into their DR site's tape library system, then do a restore to the DR site's storage array • I pointed out to them that, with such a low transfer-rate, if they ever had link-loss, it could take them hours to days to get back in sync. I further pointed out and that, worst case (i.e., on a long-enough link-outage), the replication-software might declare the sync "stale" and they'd have to re-initialize and re-do the transfer. This was probably 2005 or 2006. So, it's not that they had a ton of data to transfer, it's just that cross-country private circuits weren't available with nearly as high of transfer speeds and what options were available were silly-expensive.

jesse jarnow<a href="https://heads.social/tags/NowPlaying" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NowPlaying</a> - post-<a href="https://heads.social/tags/PCA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PCA</a> <a href="https://heads.social/tags/GratefulDead" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GratefulDead</a> scholars' caucus decompression on my own damn couch & in kevin ayers's happy faraway place. <a href="https://a.gup.pe/u/vinylrecords" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@vinylrecords</a>

jesse jarnowone more saturday morning (& afternoon) at the <a href="https://heads.social/tags/GratefulDead" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GratefulDead</a> caucus at <a href="https://heads.social/tags/PCA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PCA</a>. among many highlights: michael kaler (author of the fab new "get shown the light") on the psychedelic picaresque, oceanographer steve midway's setlist mapping, a knock-down/drag-out over narrative in instrumental music in re: jay williams, & a keynote by hero graeme boone on the state of dead studies with the eloquent summation, "the dead is never past, it's not even dead." next year in NoLa! <a href="https://heads.social/tags/deadfreaksunite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#deadfreaksunite</a>

jesse jarnowyesterday was day 3 of the <a href="https://heads.social/tags/GratefulDead" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GratefulDead</a> caucus at <a href="https://heads.social/tags/PCA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PCA</a> in chicago. powerful presentations by annabelle walsh & kenneth hartvigsen on how dead memes have persisted & transformed, steve garabedian on students writing "new" dead tunes, <a href="https://heads.social/@shaugn" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@shaugn</a> & brian felix & chad jenkins unpacking the "mississippi half step" multi tracks & the individual parts of weir & godchaux & the nature of time itself, & <a href="https://heads.social/@shaugn" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@shaugn</a> & chris coffman & me getting into robert hunter's "prelude" tape. <a href="https://heads.social/tags/deadfreaksunite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#deadfreaksunite</a>

jesse jarnowday 2 of the <a href="https://heads.social/tags/gratefuldead" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gratefuldead</a> caucus at <a href="https://heads.social/tags/PCA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PCA</a> in <a href="https://heads.social/tags/chicago" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#chicago</a>, feat. papers/presentations on the new generation of spinners by sam cooper, michael parrish on the lagin/lesh sets of '74, <a href="https://guitar.rodeo/@turgical" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@turgical</a> & davis schneiderman's perfectly titled "in & out of the grotto" on whether the camera crew *really* got dosed at playboy after dark in '69 (probably not), a dead/allmans roundtable, 3 (!) more heady looks at hunter's "a strange music," & 2 sets by excellent local dead band mr. blotto. day 3 about to begin.

jesse jarnow1st day of the grateful dead caucus at <a href="https://heads.social/tags/PCA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PCA</a> is a wrap. presentations on podcasting as public history (yo!), meditations on taping & archiving (depicted, rick monture, his d5 & d6 decks), 3 *thick* papers on robert hunter's poetry (2 on "a strange music," 1 on "bride of entropy"), & paintings from steve hurlburt's "sky yellow, sun blue" project. <a href="https://heads.social/tags/deadfreaksunite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#deadfreaksunite</a>

SlackademicOff to Chicago! Any other fediverse folks going to the Grateful Dead Studies Association conference at the PCA? I know <a href="https://heads.social/@bourgwick" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@bourgwick</a> will be there, anyone else? <a href="https://heads.social/tags/gratefuldead" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#gratefuldead</a> <a href="https://heads.social/tags/pca" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#pca</a> <a href="https://heads.social/tags/academia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#academia</a>

Matt WillemsenSeveral Bizarre Visual Symptoms Shown to Be a Strong Predictor For Alzheimer's <a href="https://www.sciencealert.com/several-bizarre-visual-symptoms-shown-to-be-a-strong-predictor-for-alzheimers" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.sciencealert.com/several-bizarre-visual-symptoms-shown-to-be-a-strong-predictor-for-alzheimers</a> <a href="https://mastodon.social/tags/PosteriorCorticalAtrophy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PosteriorCorticalAtrophy</a> <a href="https://mastodon.social/tags/PCA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PCA</a> <a href="https://mastodon.social/tags/distances" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#distances</a> <a href="https://mastodon.social/tags/movement" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#movement</a> <a href="https://mastodon.social/tags/identification" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#identification</a> <a href="https://mastodon.social/tags/alzheimers" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#alzheimers</a>

Le Néandertal sous benzoMastodon, what is a good (freely available) dataset to give an example of principal component analysis? Thanks for answering or sharing! <a href="https://mathstodon.xyz/tags/statistics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#statistics</a> <a href="https://mathstodon.xyz/tags/pca" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#pca</a> <a href="https://mathstodon.xyz/tags/rstats" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rstats</a>

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