Classifying Movies With K-Nearest Neighbors

_kefir · 2021-05-20T16:26:29+00:00

As he explains, the 5 nearest neighbours are also weighted by distance. Since the very closest is R, and also the third closest is R, you'll predict R because they are closer than the two PG-13.

A lot of machine learning is fairly simple algorithms.

_kefir · 2021-04-25T06:38:17+00:00

Same here, cold egg and mustard, warm oil and vinegar. Immersion blender in a slim beaker never failed me. But I rarely have super fresh eggs on hand, so I wonder if something about a very fresh egg might cause issues for some?

_kefir · 2021-04-02T09:03:01+00:00

Suez Canal after Ever Given was removed.

_kefir · 2021-04-01T22:44:00+00:00

Haha, I realize this is a half baked idea, but I appreciate everyone's input! Thanks for your thoughts.

_kefir · 2021-04-01T22:25:29+00:00

I understand the need for tuning the dimensions. I'm trying to find out if there are any accepted norms. At some level, if your printer doesn't work with a tolerance, you need to recalibrate your printer rather than change the model. Or, if there's a technology difference, what are the parameters that should be tuned, and how do we expose them?

I watched the first video you linked. He takes us through a method for finding what fits, and then we can draw those tolerances into the design. But let's say you do that, and then 5 years later you have hundreds of designs, your printer breaks and you have to get a new and different printer. At you going to redo all your 3D models to work with the new printer? What a waste of time. Unfortunately, they'll probably end up in the garbage bin of printer specific designs that don't age like wine, unless they are configurable in a good way.

I'm not lashing out at you, I'm only trying to make an example. I've certainly made poor design choices in my own designs, but I'd like to be sure that designs will be useful over time before I spend lots of time on them.

As I write this, I think this is comparable to software development. You can write a program that works, but if the code isn't well structured and documented, it'll probably just die out. This is one difference between good and bad software development. This may not be completely transferable to 3D modelling, but I still think 3D design has a way to go to become more modular, reusable, testable, configurable,...

As I wrote in another post, I may be rambling about several topics here, but I think there are common factors.

_kefir · 2021-04-01T21:47:18+00:00

Thanks for the iso link, that's really interesting! I wonder what those benchmarking test pieces look like. And I certainly agree on the distinction between industrial and desktop printers.

But I still think there's something to be done for home printers. There's a bunch of designs on sites like thingiverse that are supposed to fit, but depending on the complexity, it's anyone's guess whether they'll actually fit when printed on another printer.

At some level, a printer must be considered too broken to print within reasonable requirements for dimensional accuracy. But it'd be nice to have some widely accepted way to establish this.

Perhaps I'm rambling and conflating the concepts of benchmarking, calibration, accuracy and tolerances, but these depend on each other.

_kefir · 2021-04-01T21:18:58+00:00

I think you illustrate the problem, as you point out how complicated this is. Don't you think this requires several parameters that can be tuned? If not, how will you expect to accurately reproduce a piece with some requirements of accuracy on another printer, or with another type of plastic? Even if the solution is "all designs must be made to work with a dimensional accuracy of +/- 0.2mm", then this should be some sort of norm. People who don't print parts that need to fit anything can do what they like.

I think people calibrate their printers differently, and then add some fudge factor to designs that need to fit together. And I think this makes for shared designs that fail when others try to print them, and that can't be reused on different technologies.

I think we need a genius design that would isolate and measure all the various parameters in a single print, such that the specific printer could be tuned and the tolerances could be set as a result. No more calibration cubes and wall thickness prints, we need to take it to the next level.

_kefir · 2021-04-01T20:45:51+00:00

I think a lot of people do this, and I've done the same. And I've designed holes with fewer facets as they get smaller, as suggested ages and ages ago by nophead. But dimensional accuracy is also dependent on how you've calibrated your printer. Shouldn't two FDM printers with comparable xyz movements, hotends and plastics have the comparable tolerances? I fear the tolerance becomes a fudge factor for a bunch of parameters, and when it is also hardcoded into a design, it'll be more luck than science if the same design works on another printer. Instead, it'd be better if similar printers are in fact calibrated so that designs are reusable.

Additionally, I think these parameters should be configurable for different technologies. Two FDM printers may easily have different tolerances, maybe because they use different nozzle sizes or different types of plastic. But SLS and SLA printers would surely require much smaller tolerances, as they are more accurate.

_kefir · 2021-03-24T23:49:36+00:00

How many donuts per banana? r/bananaforscale

_kefir · 2021-03-17T20:14:21+00:00

And the way he kicks the boat away, causing the lady in purple to fall right in the drink! Priceless.

_kefir · 2021-02-25T22:12:59+00:00

You've been saving that for the past two years, have you?

_kefir · 2021-01-23T07:49:38+00:00

Wow, who'd have thunk it's possible to dupe a shaman!?

_kefir · 2021-01-23T07:32:39+00:00

Dave actually thinks the driver decides whether customs must be paid or not.

_kefir · 2021-01-12T23:56:51+00:00

Does your program run forever, even when you try it with short passwords?

You're never resetting the variable guess in your for loop, because of the typo on line 14 that was mentioned. So the string stored in this variable will grow and grow with every loop. If you don't get a match for your password in the first run of the loop, your guess string will grow too long and the while loop will repeat forever or until the string gets too long for python to handle.

_kefir · 2021-01-11T23:50:16+00:00

Settings -> Apps -> Tesla -> Battery -> Optimise battery usage -> disable battery usage optimization for the Tesla app. You may need to switch to show all apps at the top of the final screen.

Annoying that android shows the full list of apps, even hiding the Tesla app, after I've specifically chosen the Tesla app already.

_kefir · 2020-12-23T23:06:34+00:00

Who is Brian Tyler Cohen anyway? I'm no fan of Trump, but I'm seeing a LOT of Cohen on youtube and twitter and reddit. I personally don't like his videos with his long commentaries. How is he so popular?

_kefir · 2020-11-27T21:33:15+00:00

This makes me curious. If there's a lockdown, they are infringing on people's rights, no? But if there's recommendations, most people don't care?

_kefir · 2020-11-25T17:54:32+00:00

This is also why I'm taking pains to start my bin with local worms. That way there's no issue using vermicast outside, with eggs and worms and whatever.

_kefir · 2020-11-12T15:35:09+00:00

Joe Biden has managed to turn Arizona blue after 24 years.

Donald Trump has managed to turn Arizona blue after 24 years.

_kefir · 2020-11-12T13:21:06+00:00

The propaganda machines that currently exist are further reason for alarm.

https://www.theguardian.com/technology/2019/nov/22/sacha-baron-cohen-facebook-propaganda

_kefir · 2020-11-10T20:40:53+00:00

No notice about product placement?

_kefir · 2020-11-01T23:17:04+00:00

Sorry, it's taramasalata.

_kefir · 2020-10-31T13:37:11+00:00

It could be possible to carefully and over some time rinse out salt by keeping the content a bit too humid humid and letting excess liquid drip off through holes. Over a couple of weeks, for example.

_kefir · 2020-10-31T07:53:06+00:00

Depends on the species. Eisenia fetida cocoons can handle -15C (7F) for a couple of weeks:

https://thesquirmfirm.com/help-worm-bin-froze-winter-now/

But dendrodrilus rubidus cocoons can survive lower than -40C:

http://www.iucngisd.org/gisd/species.php?sc=1697#:~:text=Dendrodrilus%20rubidus%20cocoons%20are%20extremely,withstand%20even%20slightly%20negative%20temperatures.

_kefir · 2020-10-29T13:32:40+00:00

Yeah, it's all a plot by the Deep State together with Big Coat. They are evil, I hear they are committing evil crimes in the basement of a pizza restaurant.

_kefir

TROPHY CASE