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(Medium)   Robot breaks leg; uses mathematics to learn to walk again in under 2 minutes (with video)   (medium.com) divider line 34
    More: Cool, robustness, higher dimensions, robots  
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3420 clicks; posted to Geek » on 22 Jul 2014 at 12:17 PM (39 weeks ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



34 Comments   (+0 »)
   
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2014-07-22 09:53:39 AM  
img4.wikia.nocookie.net
 
2014-07-22 10:01:26 AM  
Okay so when the robot/human wars begin, we just have to take out both legs and the arms for good measure.
 
2014-07-22 10:16:08 AM  
i1.ytimg.com

Is not impressed.
 
2014-07-22 12:22:03 PM  
Dammit science! Cut it out!
 
2014-07-22 12:30:08 PM  
Tell Stark to quit working on Ultron
 
2014-07-22 12:38:29 PM  
Pretty cool, but the Big Dog robot that could recover after slipping on ice and prevent itself from falling after being kicked was more impressive.
 
2014-07-22 12:49:05 PM  
Knew an old guy that had a three-legged dog he named "Arithmetic", because he put down the three and carried the one.
 
2014-07-22 12:50:58 PM  

texdent: Okay so when the robot/human wars begin, we just have to take out both legs and the arms for good measure.


Or just take out one leg, and you have about a 2 minute window to get the hell out of there.
 
2014-07-22 12:58:43 PM  
So instead of calculating all this after the damage has occurred, these guys perform a good portion of the calculations in advance.

This sounds like learning, especially play-learning. Play learning because it intentionally happens before you go out into the world and do real things.

Great work. Impressive. One small problem with the article though:

Have performed this calculation, Cully and co then reduce this high dimensional data set to low dimensional one by considering only the amount of time that each leg spends in contact with the ground.

Having?
 
2014-07-22 01:02:53 PM  
Just fell down a flight of stairs wrecking my ankle, so getting a kick

/and wrist
//don't think anything is broken
 
2014-07-22 01:06:07 PM  

Uncle Pooky: Pretty cool, but the Big Dog robot that could recover after slipping on ice and prevent itself from falling after being kicked was more impressive.


Now imagine if this technique is applied to Big Dog so that it can recover from a damaged leg. Then it will have no problem tracking down Sara Conner after taking a few anti-tank rounds or maybe a mortar strike.
 
GBB
2014-07-22 01:17:46 PM  
www.stanwinstonschool.com
Compensating .....
 
2014-07-22 01:20:19 PM  
www.gifmania.us
 
2014-07-22 02:00:27 PM  
Whose leg did it break?
 
2014-07-22 02:10:43 PM  
Did anyone watch most of the video? The final 'gait' it choose was disturbingly organic, little hopping motions to keep weight off the 'damaged' leg.
 
2014-07-22 02:11:10 PM  

GRCooper: Just fell down a flight of stairs wrecking my ankle, so getting a kick

/and wrist
//don't think anything is broken


Your ankle will heal faster if you stop kicking.
 
2014-07-22 02:21:30 PM  

GenericHumanFive: Did anyone watch most of the video? The final 'gait' it choose was disturbingly organic, little hopping motions to keep weight off the 'damaged' leg.


Then there's the second video of the gait simulations where it learns it can flip itself over and walk upside down on it's "knees".
 
2014-07-22 02:26:27 PM  
lacithedog.files.wordpress.com
 
2014-07-22 02:43:37 PM  
Couple this with that software package that "learned" how to walk, and I may actually start worrying about our robot overlords.

// the first person to program self-awareness gets a knuckle sammich
 
2014-07-22 03:10:33 PM  
img.fark.net

/it adapts
 
2014-07-22 03:43:21 PM  
Time to amend the constitution to include the Three Laws of Robotics?
 
2014-07-22 04:42:16 PM  

dryknife: Knew an old guy that had a three-legged dog he named "Arithmetic", because he put down the three and carried the one.



I have a friend who's three legged cat was named tripod.
 
2014-07-22 04:44:19 PM  

GRCooper: Just fell down a flight of stairs wrecking my ankle, so getting a kick

/and wrist
//don't think anything is broken


lucky, a couple months ago a flight of stairs at a Cal train station and I got into a fight (and I lost) breaking a rib and getting a concussion. took two months lying down to fix rib. ugh.

If you ankle is really wrecked, you should really get yourself to a doctor. that's not something to screw with.
 
2014-07-22 05:06:56 PM  

Uchiha_Cycliste: GRCooper: Just fell down a flight of stairs wrecking my ankle, so getting a kick

/and wrist
//don't think anything is broken

lucky, a couple months ago a flight of stairs at a Cal train station and I got into a fight (and I lost) breaking a rib and getting a concussion. took two months lying down to fix rib. ugh.

If you ankle is really wrecked, you should really get yourself to a doctor. that's not something to screw with.


Thanks, I'm ok. Every joint down my left side, from my shoulder to my ankle, is sore as heck, but my right ankle (which took all of my not insubstantial weight), responded well to ice. It can take my weight walking.

/can already tell tomorrow is gonna suck, tho
 
2014-07-22 05:15:59 PM  

GRCooper: Uchiha_Cycliste: GRCooper: Just fell down a flight of stairs wrecking my ankle, so getting a kick

/and wrist
//don't think anything is broken

lucky, a couple months ago a flight of stairs at a Cal train station and I got into a fight (and I lost) breaking a rib and getting a concussion. took two months lying down to fix rib. ugh.

If you ankle is really wrecked, you should really get yourself to a doctor. that's not something to screw with.

Thanks, I'm ok. Every joint down my left side, from my shoulder to my ankle, is sore as heck, but my right ankle (which took all of my not insubstantial weight), responded well to ice. It can take my weight walking.

/can already tell tomorrow is gonna suck, tho


Hope it gets better, if it doesn't go get it looked at to diagnose what is actually wrong. The risk I can imagine you might be running would be if you tore or stretched something badly and it heals improperly. Leaving you with either surgeries in the future or ankle pain forever. Again, good luck.
 
2014-07-22 06:12:11 PM  
"uses mathematics to learn to walk again"

No it didn't.  It ran through pre-programmed options until one of them produced the desired results.
 
2014-07-22 06:22:19 PM  

Touched Inappropriately By The Hand Of God: Whose leg did it break?


GRCooper's.
 
2014-07-22 06:23:19 PM  
Using math is fine in theory, but using engineering is better in practice.
 
2014-07-22 06:46:08 PM  

WelldeadLink: Touched Inappropriately By The Hand Of God: Whose leg did it break?

GRCooper's.


That's what I get for having an alt account named 'Sarah Connor'
 
2014-07-22 08:27:24 PM  
It will be interesting to see what it can do once it is allowed to continuously gait as opposed to running through iterations of the same gait with a pause in between.  A lot of gait efficiency (as in bipedal walking) comes from carrying the momentum forward between steps.
 
2014-07-22 08:33:59 PM  

SmellsLikePoo: "uses mathematics to learn to walk again"

No it didn't.  It ran through pre-programmed options until one of them produced the desired results.


This.  The first video is much cooler if you don't watch the 2nd.  After watching the second video what looks to be happening is that the robot in video 1 trys to walk and figures out leg X is broken.  It then looks through the simulated gaits in video 2 to find the one that uses leg X the least (this is what they mean when they say "Cully and co take a different approach by attempting to reduce the size of the parameter space").
 
2014-07-23 01:16:02 AM  
i.imgur.com
 
2014-07-23 11:09:23 AM  
Your basic arachnid robot isn't too smart, but you can blow off a limb and it's still 86% combat effective.

www.iwatchstuff.com
 
2014-07-23 10:06:28 PM  
img.fark.net
 
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