Following yesterday’s coverage on Amazon’s series of trouble with antitrust regulators, I digged into the filing complaint of CA v Amazon and the orginal complaint and amended complaint of FTC v Amazon. We can obtain quite a bit of interesting information about Amazon’s Buy Box: (at least, from the perspective of regulators…) first, Amazon chose to make purchasing outside the Buy Box hard: Nearly 98% of Amazon sales are made through the Buy Box....

Here are recent news about Amazon Buy Box’s into antitrust trouble: California sues Amazon | September, 2022 Timeline: Sept. 2022: Attorney General Bonta sued Amazon in the Superior Court of California. The lawsuit basically focused on accusing Amazon penalizing sellers for listing products at the lower price on other selling channels—that if Amazon spots a product listed elsewhere cheaper, it will often remove the seller from the Buy Box on Amazon....

people in academia are generally too good at procrastinating. doing things at last minute isn’t entirely wrong. like, some job scheduling algorithms do look like they are procrastinating. plus there is the infamous structured procrastination… but at the end of the day, procrastination makes one think inefficiently in a rush, raise anxiety level and occasionally, blow up deadlines. so here’s an effort of trying to battle my procrastinating tendency during bloggings:...

Recap of week 2, and motivation for this week’s Part I: In an economy of $n$ agents and $m$ indivisible items, if all agents’ value functions are Gross-Substitute, the economy has a Walrasian Equilibrium $(\vec S, \vec p)$. The Walrasian Tatônnement process can find the equilibrium efficiently. The allocation also maximizes social welfare. But one subtle thing to notice about Walrasian Tatônnement is that it converges to an equilibrium. So here’s another way of solving it:...

👏🤦🏻‍♀️👏🤦🏻‍♀️👏🤦🏻‍♀️ 50-years of open problem closed. Proteins are essentially correctly folded and well-functioning polypeptide chains. So theoretically, protein 3D structures are determined by the sequence of amino acids in the polypeptide chain. The Nobel Prize in Chemistry (1972) was awarded to C. Anfinsen for this finding. amino acids make up proteins essentially like LEGOS. importantly, proteins function only when they are folded and form their structure in the right way...

Much to almost everyone’s surprise, the Nobel Price in Physics 2024 is awarded to John Hopfield and Geoffrey Hinton, for their foundational discoveries and inventions in ML: When we talk about artificial intelligence, we often mean machine learning using artificial neural networks. This technology was originally inspired by the structure of the brain. In an artificial neural network, the brain’s neurons are represented by nodes that have different values. These nodes influence each other through con­nections that can be likened to synapses and which can be made stronger or weaker....

The official performance of 7 selected songs from Ariana Grande’s 7th album eternal sunshine is out. They are: intro (end of the world) don’t wanna break up again eternal sunshine supernatural yes, and? we can’t be friends imperfect for you My favourite is supernatural, Ari’s vocal is accurate and almost flawless: Editor Katia Temkin seems to be in favor of her weird hand-held camera angle that moves back and forth in an annoyingly unstable way....

Mastery of techinuqe, sweet cockyness, and looking like to be having so much fun—here’s Marianela Núñez’s Kitri in Don Quixote:

Following yesterday’s post about Giselle, I want to discuss a topic that lies close to my heart—musicality in ballet. As a former professional flutist, my perspective may be biased, but I firmly believe that musicality is often underestimated in ballet performances. Let’s begin with a snippet from the Bolshoi Ballet’s Sleeping Beauty. It’s worth noting that Tchaikovsky’s Swan Lake premiered at the Bolshoi Theatre on March 4, 1877. Today, the Bolshoi Ballet is considered one of the best in the world in 2024....

Not the standard choreography of Giselle’s variation. Surreal, pure artistic beauty. View this post on Instagram A post shared by Só Bailarinos (@renatosobailarinos) For comparison, here’s how it’s usually danced—notice that the dancer won’t hang on there for that long: (this is Alina Cojocaru’s 2006 version at the Royal Ballet in London, one of the agreed best versions)