siekmanj

7 ms·

1.
by siekmanj 2mo ago
Judging from recent improvement it doesn't appear to be a dead end technology, but I guess time will tell!
2.
by siekmanj 2mo ago
yes, for heavy lift and bulk manipulation high gear ratios are still necessary. Maybe someday cable drives will be feasible. No question that we are not at human performance yet or that there isn't a ways to go. This is the specific cl
3.
by siekmanj 2mo ago
Actuators on modern humanoids use cycloids or planetary reducers, not strain waves. They are much more compliant and backdrivable because of the huge reduction in reflected inertia.
4.
by siekmanj 2mo ago
I could not disagree more with the claim about no improvement in robotic actuators. The torque density and price of actuators has fallen dramatically since Ben Katz's MIT work on mini cheetah. The actuators on the Unitree G1 based on t
5.
Agility’s Latest Digit Robot Prepares for Its First Job(spectrum.ieee.org)
1 points by siekmanj 3y ago|0 comments
6.
by siekmanj 4y ago
"RL: A Deep Reinforcement Learning Framework" seems to have been hallucinated, does not exist.
7.
by siekmanj 4y ago
Video here: https://twitter.com/oregonstatenews/status/15747969243260108...
8.
Bipedal robot developed at Oregon State achieves 100m Guinness World Record(today.oregonstate.edu)
7 points by siekmanj 4y ago|1 comments
9.
by siekmanj 4y ago
https://archive.ph/8X76D
10.
by siekmanj 4y ago
True, but it's not trying to be multi-threaded, just concurrent.
11.
by siekmanj 4y ago
Python has actually had concurrency since about 2019: https://docs.python.org/3/library/asyncio.html . Having used it a few times, it seems fairly sane, but tbf my experience with concurrency in other languages is
12.
Agility Robotics Raises $150M(agilityrobotics.com)
1 points by siekmanj 4y ago|0 comments
13.
by siekmanj 5y ago
From some cursory googling: Afghanistan peak US troops: 102,000 (2011) Gulf war peak US troops: 700,000 (1990-1991) Iraq peak US troops: range from 168,000 - 192,000 (2007) Vietnam peak US troops: 543,000 (1969) Korea peak US troops: 320,00
14.
by siekmanj 5y ago
This is an amazing outcome. The license cost was a huge barrier to entry and the progress of deep RL generally.
15.
by siekmanj 5y ago
The sim2real approach can work pretty well as long as you are very in tune with where your simulator falls short relative to the real world and take steps to circumvent those shortcomings. Here's some work my lab did on sim2real for
16.
by siekmanj 5y ago
Since you mentioned it--here's what Oregon State University and the Cassie group is up to these days: https://youtu.be/MPhEmC6b6XU
17.
by siekmanj 5y ago
It's a German phrase which colloquially translated means 'Gotta go bro'
18.
by siekmanj 5y ago
Actually, I think it is conventional neural networks which can only approximate finite state machines. RNNs are (in theory, not so much in practice) Turing complete.
19.
by siekmanj 5y ago
Hey everyone, I am one of the authors of the paper described in this article. We used reinforcement learning and recurrent neural networks to learn a controller which can ascend and descend stairs without any vision-based perception, meanin
20.
Agility Robotics' Cassie Is Now Astonishingly Good at Stairs(spectrum.ieee.org)
3 points by siekmanj 5y ago|1 comments
21.
Watch a 'blind' robot successfully navigate stairs(engadget.com)
2 points by siekmanj 5y ago|1 comments
22.
by siekmanj 6y ago
I was always very unimpressed with VR until I borrowed a headset to play Half Life Alyx. That game convinced me VR is the inevitable future of gaming. The rest of the industry may not be there yet, but it is an obviously superior experience
23.
by siekmanj 7y ago
This is mostly true for supervised and unsupervised learning models, but for reinforcement learning the LSTM is king because of the convenient fact that it can be evaluated one time step at a time, instead of just outputting a sequence like
24.
by siekmanj 7y ago
Python doesn’t really have scope in that way. Variables declared inside an if statement can be accessed outside of the if statement.
25.
by siekmanj 7y ago
Wow. I have been looking for a good resource on implementing self-attention/transformers on my own for the last week - can't wait to read this through.
26.
by siekmanj 7y ago
Unfortunately, looks like KSP 2 will also be using Unity: https://forum.kerbalspaceprogram.com/index.php?/topic/187315...
27.
by siekmanj 7y ago
Interesting, lots of people say the exact same things about Portland. I would guess every booming city is facing this dilemma.
28.
by siekmanj 7y ago
> theoldnet.com is currently unable to handle this request. Not sure if intentional or hilarious irony.
29.
by siekmanj 7y ago
I've been writing a C-based deep learning library for the past year or so, which I've recently been trying to clean up to be a bit more presentable. It was pretty heavily inspired by Darknet, although it admittedly has far fewer f
30.
by siekmanj 7y ago
Andrej Karpathy has a pretty good introductory article to RNNs here: http://karpathy.github.io/2015/05/21/rnn-effectiveness/ He has some code which is pretty easy to follow to go along with the article:

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