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dwiel

819 karma · joined October 14, 2009

Terran Robotics - CEO

zdwiel at gmail

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dwiel··on How to measure frequency response of a speaker at home
what if you move the microphones and speakers at varying but precise speeds so that doppler shift can be used to shift frequencies? you could play a tone on the speaker, shift the relative velocity (spin the microphone really fast?) and calibrate a frequency range of the microphone. with a calibrated mic frequency range, you can now calibrate that range of the speaker. repeat. each calibration step is going to accumulate error. to be clear, not a practical solution, but fun to theorize.
dwiel··on A new Suez crisis threatens the world economy
In some situations the US has gone to war with countries who not long after are close allies. Germany comes to mind, but there are others. In other cases the situation you describe is more accurate. What are the primary factors that influence one outcome or another?
dwiel··on Google Brain founder says big tech is lying about AI danger
As someone who has been following deep learning for quite some time as well, Bengio and Hinton would be some of the first people I think of in this field. Just search Google for "godfathers of ai" if you don't believe me.
dwiel··on Chromebooks will get 10 years of automatic updates
Not only this but my Chromebook wasn't upgradable even though the parts weren't soldered in. I tried upgrading the Wi-Fi/Bluetooth module but it wouldn't grab the latest drivers so I had to stick to the old Bluetooth that barely reaches across the room.
dwiel··on Job Corps: free, residential training and education for low-income young adults
Its obvious why it is set up this way. That said, it can be hard to see other people who make the same wage, spend it all on fancy cars and a bigger house get more aid when you've been living modestly and saving resulting in less aid.
dwiel··on Cloud seeding catching on amid Rocky Mountain drought
I agree that we are already massively terraforming the planet, and that there is some terraforming we should stop and dinner we should do more of.
dwiel··on Quitting the rat race
Or you know, talk to your spouse about it first. I dropped down to $0 income for 2 years with two kids and a wife. My family is as strong as ever.

Obviously just one data point and divorce rates are high. Do you have any data on this specific case: depressed about job, quits job to be happier, results in divorce. It seems quiet possible that given the circumstances, quitting the job might decrease the chance of divorce by helping remove so much stress from work.

dwiel··on Bayesian statistics and machine learning: How do they differ?
Yeah right, in my experience I haven't needed as many networks in the ensemble as I first assumed. This paper [1] suggests 5-10, but in practice I've found only 3 has often been sufficient.

[1] https://arxiv.org/abs/1811.12188

dwiel··on Bayesian statistics and machine learning: How do they differ?
Right, the claim was that "Neural networks give probability estimates. Bayesian methods give us probability estimates AND uncertainty" which presents a false dichotomy. I think we agree.
dwiel··on Bayesian statistics and machine learning: How do they differ?
It is common for a network to output the distribution, so the output is both the mean and variance instead of just the mean like you pointed out. For example check out variational autoencoders.
dwiel··on The Case for Abolishing Elections
A few ideas:

1) make the sortition group big enough, say 1000 or 10000 people, so the required number of people bribed goes up, which increases bribery cost as well as chances of getting caught

2) make a bounty program to help put a lower bound on the cost to bribe

dwiel··on Ask HN: Who is hiring? (November 2022)
Terran Robotics | Bloomington, IN | Full-time, Onsite\Hybrid

Hiring for two roles: AI/Robotics/Software Engineer and Structural/Materials Engineer

At Terran Robotics, we're building construction robots that turn dirt into extraordinary homes. We've got $6m+ in LOIs, we're building our first production unit right now and completing 2 paid projects in the spring of '23 to de-risk the tech. We aren't inventing a new material. Our walls are similar to adobe which means they are already accepted in building code and already loved by home buyers. The only reason adobe is expensive is because it's built by hand. Our robots change that.

We are looking for people who want to join our small team and get this product off the ground. Specifically, we are looking for someone who has experience with one or more of the following: computer vision/SLAM, AI, robot control, reinforcement learning. We've got our current material and structural system permitted, but are looking for someone with a structural engineering and/or material science background interested in taking it to the next level.

https://terranrobotics.ai

contact@terranrobotics.ai

dwiel··on Geothermal may beat batteries for energy storage
You can actually push a bit if current backwards through the cell to heat it up. Some people have tried this but not sure about what prevents this from being more wide spread

https://www.pv-magazine.com/2020/03/18/heating-solar-panels-...

dwiel··on AI Hyperopia
I actually find the "build something that is probably wrong faster" really helpful. I frequently write a function and a quick bit of documentation about what it should do, let copilot finish it, realize my intent was wrong, rethink the intent, etc. If I didn't have copilot I would follow the same process, but it would take a lot longer to realize my intent was wrong.

It takes some time to learn what copilot is capable of and how best to prompt it, but I'm my experience it very quickly pays off.

dwiel··on Mcmaster.com is the best e-commerce site I've ever used
I use filters all of the time, but they frequently don't work (as mentioned but a sibling comment) sometimes the filter value don't allow a range so if you want anything between 10 and 100 you have to select all of the values between 10 and 100. Other times, the options aren't sorted so you have to select 10,000 uf and 10 mf and 0.01 F. Still other times numeric values are sorted alphabetically so you get 1 ohm, 1.1 kohm, 1.2 megaohm, 2 ohm, etc. So to select a range you need to clock through around the entire range of values looking for the order of magnitude you want.
dwiel··on Mcmaster.com is the best e-commerce site I've ever used
I wish digikey was as good as McMaster. With digikey I often have to parse through a huge table with many pages to figure out what the difference is between a bunch of search results. On McMaster you can clearly see search results categorized in sub tables and densely arranged to make clear what the options are.

Are there any electronics websites that actually organized like McMaster?

dwiel··on Milwaukee Tool Raises the Bar with New USA Factory
And what about the highly skilled lower paid workforce also using automation in China? And with fewer safety requirements the machines are cheaper too.
dwiel··on Solar canopies on parking lots
It is possible you could get away with that in some places, but everywhere I've lived in the US, it is illegal to sell electricity to your neighbors. The only way around it I've seen is to give it away for free, but it is hard to build a scalable business around that.
dwiel··on Senate passes bipartisan bill to subsidize U.S.-made semiconductor chips
I've received money from the NSF SBIR grant program and know another half a dozen others who have as well, and while there is certainly a process, it isn't too bad. All the people I know who have received them are at startups and small companies. That said, the NSF does more than just SBIR and I can't speak to any of that.
dwiel··on The Swerve
You are right, I was mixing up authoritarian communism and anarchist communism, thank you.
dwiel··on The Swerve
It's not even a book by that title, it's an interview of him where the interviewer included the word communism in the title of the interview. I've read the books referred to in the interview and they definitely aren't about communism.
dwiel··on Weightless cats – Do space cats land on their feet? (2011) [video]
All of those would still happen in zero-g though right?
dwiel··on Drone footage of Tesla factory
Do you have a beacon system you have used that you have in mind?
dwiel··on I Am Seriously Considering Going Back to Desktop Computers (2020)
I got an M1 on loan while my Intel Mac was in the shop and I was terribly unimpressed. Only 8 GB of ram was part of the problem, but I just didn't notice any performance improvement between it and my Intel Mac.
dwiel··on No news is good news
I've actually found that Improve the News [1] is good for something like that. It has sliders to let you select what kind of new you are looking for with one of the sliders which controls "shelf life" ranging from short to long and "recency" from evergreen to recent. Not exactly what you are looking for, but I've found it can serve a similar purpose.

[1] https://www.improvethenews.org/

dwiel··on Show HN: A game that tests how well you know your local area
All the different variations of names of the same road definitely made the game too frustrating to play much in my area. Simply counting all names that are only different by cardinal direction as the same name would solve it. I imagine in some places though this would be the wrong behavior.
dwiel··on A new speed milestone for Chrome
It's because she runs out of memory and it starts swapping, I check the task monitor or whatever it is called in chrome. Some of the AdBlock extensions are taking up ram as well.
dwiel··on A new speed milestone for Chrome
How do you know that isn't just measuring that most people keep to 5 tabs because otherwise everything grind to a halt. That's about how many tabs my wife's old Chromebook can handle before she has to start closing old tabs.
dwiel··on Ask HN: Who is hiring? (March 2022)
Terran Robotics | Robotics/Reinforcement Learning/Structural Engineering | Bloomington, IN, USA | Full Time, ONSITE | liveterran.com

At Terran Robotics our mission is to radically lower the cost of housing. As a starting point, we have developed a wall system which can be 3d printed with our custom heavy lift autonomous drones. Our wall system is similar to adobe and already approved in building code. We have customers lined up in our area, and are on track to build our firsts homes this summer.

We have funding from the National Science Foundation and ODX and will be raising a seed round soon to grow the team. We have a prototype together, but are going to need help pushing our SLAM and RL control systems to the next level. We are currently heavily based on Python, PyTorch, and some ROS.

We have Structural Engineers working on contract for us but would like to bring someone on in-house and full time.

If any of this sounds interesting, get in touch with me at zach@terranrobotics.ai

dwiel··on Ask HN: How do you deal with getting old and feeling lost?
The one at the used bike store that feels the best to ride on a quick test ride.
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