product, macroeconomics, data, maps, and other stuff. expect typos.
New York
Joined March 2007
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Ray Cha retweeted
BREAKING: White House issues new policy that will require, by 2026, all federally-funded research results to be freely available to public without delay, ending longstanding ability of journals to paywall results for up to 1 year. Coverage coming on @ScienceInsider.
Ray Cha retweeted
"The sad truth is that “investor sentiment” moves against poorer economies regardless of the real economic conditions in specific countries."
@Jayati1609 is calling for urgent action to tackle the coming debt crisis
theguardian.com/world/commen…
Ray Cha retweeted
Today is the ten year anniversary of my favorite moment in monetary policy!
Whatever it takes!
Epic, yes, but what follows is equally badass, if not more: "and believe me, it will be enough".
Mario Draghi! What a gangster! 🖖😎🔥🚀
youtu.be/tB2CM2ngpQg
Ray Cha retweeted
How a book written in 1910 could teach you calculus better than several books of today
[Calculus Made Easy, by Silvanus P. Thompson, 1910 - full text pdf: bit.ly/2pThkf1 or with the table of contents: calculusmadeeasy.org]
Ray Cha retweeted
1/8
Argentina is taking a further step into the self- reinforcing debt loop. Typically when a country's debt burden exceeds its repayment capacity, financial distress costs begin to set in, and these reduce debt repayment prospects even further.
wsj.com/articles/argentina-n… via @WSJ
Ray Cha retweeted
Damn I wish everyone had shown this level of concern as hedge funds were buying out local newspapers across the country.
Ray Cha retweeted
On the blog: elaborating more on the business model of web maps, How SaaS can create misaligned incentives, and how I’m keeping it simple with @protomaps
protomaps.com/blog/free-tier…
Ray Cha retweeted
We’ve noted the flaws w/ relying heavily on interest rates to reduce inflation, while noting the federal govt’s unique power to do so through healthcare pricing.
The proposed 8% bump will likely add noticeably to 2023 healthcare services PCE in particular
employamerica.org/researchre…
Ray Cha retweeted
17/ Still think the Mercator projection is innocent of geopolitics?
Would this post work with any other projection?
Ray Cha retweeted
An intriguing q these days is whether China's Xi had been informed of Putin's invasion plan when the two issued Feb. 4 solidarity statement. “A careful examination of the events suggests that China was, in fact, played," wrote Yun Sun @StimsonCenter stimson.org/2022/ukraine-did…
Ray Cha retweeted
1/
Math is amazing.
Here’s a trick question that will take us deep into probability theory:
Suppose that I give you a circle, and ask you to pick a point A in the circle at random.
What’s the probability that A is closer to the outside of the circle than it is to the center?
Ray Cha retweeted
Want Your #MachineLearning Algorithm To Be Fair? Check These 8 Tools
buff.ly/31FS5Py via @analyticsindiam
#AIEthics #AI #DeepLearning #100DaysOfCode #CES2022
Cc @jblefevre60 @KirkDBorne @bobehayes @DeepLearn007 @MiaD @archonsec @Nicochan33 @pierrepinna
Ray Cha retweeted
Over the past year, I have been using my limited spare time to piece together the deep history of today's stagnation in American freight railroading. This (long) blog post is the culmination of that work
homesignalblog.wordpress.com…
Ray Cha retweeted
How to create art with Machine Learning? 🎨
You've probably seen these strangely beautiful AI-generated images on Twitter. Have you wondered how they are created?
In this thread, I'll tell you about a method for generating art with ML known as VQGAN+CLIP.
Let's jump in 👇
Ray Cha retweeted
New blog post on: Dynamic maps, Static Storage
protomaps.com/blog/dynamic-m…
I go into detail about the @protomaps PMTiles archive format, Powers of Ten, video codecs, and mapping a planet that is mostly water
Ray Cha retweeted
Releasing PMTiles, my new cloud-optimized archive format for "serverless" map applications: github.com/protomaps/PMTiles
A single PMTiles file can contain thousands of vector or raster tiles; served directly from S3 or other storage into your map renderer - see link for Leaflet demo