tobychev @tobychev@qoto.org

How big problem it is that cross-validation (CV) is biased? I briefly discuss some points on this.

0. Unbiasedness has a special role in statistics, and too often there are dichotomous comments that something is not valid or is inferior because it's not unbiased. However, often the non-zero bias is negligible, and by modifying the estimator we may even increase bias but reduce the variance a lot, providing an overall improved performance.

The normalisation of the extreme-right by the centre-right in Sweden went like this.

- we will never work with them.

- we happened to vote the same way as them.

- since we know they also like this policy, we will propose it. But we are not working with them!

- our policies are based on extreme-right support so it makes sense to talk to them

- a local council will be run with extreme-right support. But never nationally!

- YOLO national government with extreme right support, it's normal now

“I know how this information looks—when taken out of context, it seems bad,” Exxon CEO Darren Woods said in response to the Wall Street Journal’s inquiry about the documents that show Exxon executives strategized over how to diminish concerns about warming temperatures, and they sought to muddle scientific findings that might hurt its oil-and-gas business.

Lol. In what context does this look good?

https://www.wsj.com/business/energy-oil/exxon-climate-change-documents-e2e9e6af

Philosophy has a WEIRD people problem too: “we analyzed 171 experimental philosophy studies published between 2017 and 2023. We found that most studies tested only Western populations but generalized beyond them without justification”

https://www.cambridge.org/core/journals/philosophy-of-science/article/hasty-generalizations-are-pervasive-in-experimental-philosophy-a-systematic-analysis/27AF62B58334B5120F3317CE9E6259C7

Alexey Navalny’s co-defendant Daniel Kholodny is just one of Russia’s estimated 600 political prisoners. In his letter from a penal colony, Kholodny explains why letters and postcards from the outside (and even from abroad) matter so much to inmates.
https://t.co/wB5VVu0y1l

From the observational point of view, the situation has dramatically improved over the years, and now some of the most spectacular images by modern telescopes are of radio galaxies.

They show a broad variety of magneto-fluido dynamical instabilities, perturbations and interactions with the medium, unexpected threads, edges, and even more weird stuff.

Look at this one:

Företag som inte ens stöder vanliga jäkla diakriter bör förgöras.

Most CS degrees have students do a "traffic light" exercise at some point: build an model of an intersection, run the stoplights.

Those lessons sometimes ask questions like "Are there pedestrians in your model? Maybe bikes? How about buses? Exactly who lives in the neighbourhood, do they relies on public transit? Et cetera.

A question I like to ask students, that always gets a lot of uncomfortable silence is: at what point do these decisions stop being software, and start being public policy?

Hans och Barbara Bergströms finansierar medier som sprider konspirationsteorier, förintelseförnekande och nazistisk propaganda, enligt Expos kommande nummer. https://mailchi.mp/1c1474c8de0c/tack-8244461

PSA for #Peertube instance owners:

Block/ignore the peertube.se instance immediately. This is run by and used by the Nordfront organization for Nazi propaganda.

It's the first match on Google if you're located in Sweden, which is problematic.

Please boost for exposure.

Hot take: currency symbols are units, like kg or Hz. And units go AFTER the number, not before!

Techbros: self driving cars are inevitable!

Also techbros: prove you are human by performing a task that computers can’t do, like identifying traffic lights.

The woke mind virus is so common in Sweden that almost every single public door here has the word 'drag' on it.

People who hate negative numbers will stop at nothing to avoid them..

The full landing sequence of #Chandrayaan3

I wrote a python script to undo the frame blending from the original video and then upscaled the images with AI.
The video is at 120x playback speed, in reality this took about 66 minutes.

Credit: #ISRO / Simeon Schmauß

In its first announcement since June 26 (and possibly last ever post), Prigozhin's press center says he was buried privately at Porokhovskoye cemetery in St. Petersburg. The site closed 30 minutes earlier, so reporters can't even verify this yet. https://t.me/concordgroup_official/1305

Globally we produce A LOT of #energy, but did you know the majority of fossil energy gets wasted? In the US alone, two-thirds of that energy is *wasted* as heat.

As Hannah Ritchie has pointed out, we don’t actually need to produce a low carbon equivalent of all of the coal, oil & gas we currently use.

That means we can decarbonize quickly by being less wasteful & more efficient. #ClimateChange #science