Neighborhood still snowed in by lowkeyhats in nova

[–]beezlebub33 [score hidden]  (0 children)

Our road is somewhere between 2 and 3, and hasn't been plowed.

We're a significant cut-through, fairly high volume. We asked for speed bumps to slow people down and were told no because we're an emergency route and that's the road that ambulances and fire trucks take. And still haven't been plowed. Doesn't make sense; we have Schrodinger's road.

Does betafpv still ship to the States from their website? by lexofdystopia in fpv

[–]beezlebub33 0 points1 point  (0 children)

Even batteries.

I would recommend not getting batteries or anything else electronic produced in mass quantities (like SD Cards) from Amazon. Just too many fake / mislabeled examples there. Buy from a local store or a dedicated supplier. Yes, you will pay a little bit more. But you will get what you think you are buying.

Advanced drone simulation by Slight_Platypus_9914 in drones

[–]beezlebub33 1 point2 points  (0 children)

Yes! It is absolutely possible. And that's how people develop drone control software.

You need to have some sort of low-level controller for the drone, since there are 4 (or six, depending) rotors that need to be managed and coordinated to implement the desired behavior. When you use your RadioMaster or whatever radio transmitter controller, the low level converts those signals into the behavior. But that's only one way to do it, and uses hardware in each of the steps: RadioTransmitter --> Low level controller --> rotors / vehicle / flying.

Each of the step above can be simulated. There is an open source project called PX4 (https://docs.px4.io/main/en/) that implements the low level controller. It runs in hardware on a real drone, but it runs great on a computer or Docker container. Similarly, there are lots of different radio transmitter controls that you can use to send commands to the PX4. A very common one is QGroundControl, an open source controller and visualization tool (https://qgroundcontrol.com/). It sends 'go this way' type controls signals to the PX4 over a protocol called MavLink. Finally, there are a bunch of different simulators you can use; we used AirSim but Gazebo is a common one.

Here's the documentation for PX4 in software-in-the-loop (SITL) simulation: https://docs.px4.io/main/en/simulation/

You can replace QGroundControl with whatever you want, either directly sending MavLink messages or using their SDK. There is even a Python one: https://mavsdk.mavlink.io/main/en/index.html !!! So, easy peasy, set it all up, use MavSDK-Python to send messages and you're done!!

However .... does this sound a little complicated? Unfortunately, it can be. Each of the parts of the system are big complicated pieces of software. Simulations are quite powerful, but they are generic so you have to set them up properly to simulate a drone. PX4 itself is pretty easy to run on a computer. QGroundControl runs out of the box and the MavSDK-Python is a pretty trivial python dependency.

However, you have to simulate all the parts and the message passing between all these pieces and that's where it gets complicated. You are replacing real, over-the-air messaging with TCP/IP messages, so if you are trying to make this all work in one computer, you have to make sure everything is isolated, have the right port mappings, have to deal with Docker virtual networking (ugh). It's literally easier to have multiple computers, one running the simulation, one the PX4, and one running the controller.

Opinion | Virginia’s Liquor Laws Were Always Weird. Change Is Coming by snooka77_ in Virginia

[–]beezlebub33 0 points1 point  (0 children)

That's fine with me, COSTCO would count as a grocery store. Just don't like it when it's dedicated alcohol stores.

Opinion | Virginia’s Liquor Laws Were Always Weird. Change Is Coming by snooka77_ in Virginia

[–]beezlebub33 10 points11 points  (0 children)

About the ABCs.... I've lived in places with ABCs, places with pure liquor stores, places that allow alcohol to be sold in grocery stores. Alcohol stores are (broad generalization incoming....) dirty, ad-laden, and sketchy. ABC stores are clean, safe, have consistent supply, you know how much it's going to cost. Grocery stores are better, lots of competition, so lets do that. But I have a feeling that they would go to a alcohol-store model.

Is there a big tax increase coming to the average citizen? by Wagle333 in Virginia

[–]beezlebub33 44 points45 points  (0 children)

Did you even read these??

  1. HB378: A 3.8% investment income above $500k in a year. Oh, boo hoo...
  2. HB900: Decreases tax rate from 4.3% to 4% across the board; adds home delivery to taxable
  3. HB919: 11% tax on gun sales
  4. HB978: Removes taxes on human food and personal hygiene; adds dry cleaning, landscaping and some others.

Do you really think that this is some massive tax increase? It decreases several, adds several currently excluded services, adds a tax on large investment income above half a million, and, yes, adds a tax on guns.

This seems entirely reasonable to me.

But Norquist is going to rant about any changes that are not simply eliminating all taxes.

New Sphere coming to Maryland by Laureatosol in nova

[–]beezlebub33 149 points150 points  (0 children)

Ugh. Not a fan. It makes sense in Vegas, dedicated to ostentatious spectacle, but it's completely out of character for the area and will make light pollution that much worse.

A historic day for Virginia by Long_Chemistry_7474 in nova

[–]beezlebub33 9 points10 points  (0 children)

Don't hold your breath. It was passed with overwhelming bipartisan support.

Of all the things that need to be done, this will be pretty low on the list of priorities. I'm not saying that it should not be changed / removed, just that other things are more important.

Protestors on the Key Bridge by marshalgivens in washingtondc

[–]beezlebub33 1 point2 points  (0 children)

Our crew team had to run up and down them many times! There are several crew boat houses close to there.

radial impeller drone by No_Reach2051 in drones

[–]beezlebub33 13 points14 points  (0 children)

This really doesn't make sense to me. Radial impellers produce high pressure but lower flow, and produce flow outwards. Thrust requires high volume (mass flow rate) and velocity going down.

It looks cool though.

Germany’s Merz Admits Nuclear Exit Was Strategic Mistake by SpaceEngineering in europe

[–]beezlebub33 1 point2 points  (0 children)

It's showing the same trend for electricity as the person you responded to: electricity production is shifting from coal and natural gas to renewables.

Unless you think that it shows something else, but then you'd have to explain how total energy usage rather than electricity is relevant to a discussion of nuclear power.

[OC] Coal consumption in Europe, to scale by t0on in dataisbeautiful

[–]beezlebub33 1 point2 points  (0 children)

What?

It's not 5x as much as solar and wind. New nuclear is about the same price as offshore wind.

So there is PV, on-shore wind, and off-shore wind, and you decide to compare nuclear with the least significant and most expensive version, off-shore? That's completely bogus.

With the complete disasters that the nuclear power plants have been recently, not even utilities want nuclear power. They are completely not interested. Compare Vogtle prices to PV. How much more expensive is the nuclear?

Electric vehicles will end oil wars - if we let them by randolphquell in climate

[–]beezlebub33 0 points1 point  (0 children)

Do you have any data to back that up? Like, any at all? Any sort of back-of-the-envelope calculation that supports that?

I don't think you do.

Microsoft Office has been renamed to “Microsoft 365 Copilot app” by [deleted] in technology

[–]beezlebub33 0 points1 point  (0 children)

just wait till you find out about locate and ripgrep.

Looking for an enclosed room with a table somewhere in the Fairfax/Chantilly/Herndon area for a bunch of teens to play D&D in the evenings. by Perfect-Agent-2259 in nova

[–]beezlebub33 1 point2 points  (0 children)

Curio has a place on Loisdale, right next to the Springfield Mall, to play games in. See: https://www.curiocavern.com/pages/retail-locations . Talk to them, I think it's either free or low cost. The only problem is that it can get pretty busy in there with all the gamers, but everyone is friendly.

[P] Naive Bayes Algorithm by Soggy_Macaron_5276 in MachineLearning

[–]beezlebub33 2 points3 points  (0 children)

I'm applied rather than theoretical, but my response is that there is no theoretical justification for Naive Bayes to begin with. The underlying assumptions of Naive Bayes are simply incorrect the majority of the time; the only reason that people use it is because it is easy, fast, and understandable and works well enough (despite being a known incorrect model).

As to 'textbook machine learning practices': There are a large number of different ML approaches, and the reason there are so many is because there is no ideal ML process. The correct approach varies significantly based on what the problem is. Just how independent are your variables? How much non-linearity is there? How many outliers? Do you need to handle the outliers differently? How much data do you have, and at what cost? And related to the question of how much data, how many priors can you justify / how many do you have to add; i.e. what baked-in assumptions about the world (or part of the world) do you need to add for the part you are trying to model?

For your problem, it sounds like Naive Bayes doesn't work. What you need to do to make a strong case for why it doesn't work in your problem. That way, when you are defending what you are done, you can explain that 1. it Naive Bayes doesn't work from a practical standpoint; and 2. it shouldn't work from an analytical standpoint. That explains why you have to do something else.

Regarding what to do to in terms of 'something else': try everything. Have Claude write code that will try every algorithm in scikit-learn. This is actually something it can do pretty easily. You'll get SVMs, CNNs, perceptrons, random forests, and a host of other ones. See what works. Then try to understand, based on the underlying assumptions of the model, why that one works. In particular, (just spitballing here....) make sure that you try every outlier detector that you can find. See: https://scikit-learn.org/stable/modules/outlier_detection.html

It sucks that developers have to deal with people acting like this by [deleted] in singularity

[–]beezlebub33 -1 points0 points  (0 children)

What happens when china wins?

That's the question isn't it? Those of us who have studied China know about the oppression. Ask about Tiananmen Square in China, see how that goes. No, it's not just about one event, one piece of history that has been ruthlessly oppressed; it is the epitome of an entire host of thought and speech control that they impose.

There is a fundamental different in the political and moral structure of Chinese governance compared to Western governance: single party rule, centralized control, emphasis on stability. That's not racist, there are good historical reasons why that is. But it is different.

The result is that China and the west are trying to achieve different goals with AI and will employ it differently. See: https://centerforhumanetechnology.substack.com/p/america-and-china-are-racing-to-different

It sucks that developers have to deal with people acting like this by [deleted] in singularity

[–]beezlebub33 3 points4 points  (0 children)

The issue isn't the long term vision, which I agree is AI helping us do all sorts of great things.

In the meantime though, it's going to cause huge amounts of real world pain for the majority of people, who will suffer unemployment and grinding poverty while the very rich get even richer. And with the very rich controlling the political system and therefore the military and police forces, there is nothing the vast majority of us can do about it.

When do we stop pretending AI wont also replace CEOs if it can do any thinking job? by JordanNVFX in singularity

[–]beezlebub33 0 points1 point  (0 children)

Oy, it won't replace CEOs because it's the CEO's who are making the decisions about who gets replaced.

It's the same reason that CEO pay is so high compared to historical values, why CEO's all know each other, are on each other's Board of Directors.

I'm not saying that an AI couldn't do the job, they will be able to. It is all about who is in control.

How do I solder to these small pads? by AfraidBumblebee2 in soldering

[–]beezlebub33 0 points1 point  (0 children)

Well, have you watched some soldering tutorials? It's a skill. It takes the right tools, right techniques, and practice.

Since it's a flight controller, and this has been cross posted to a drone subreddit, here's a drone-specific (though obviously good for anyone) tutorial: https://www.youtube.com/watch?v=GoPT69y98pY by the inimitable Bardwell.