00:03 - 00:06

all right buffal up for this one we're

00:04 - 00:08

diving into research where a team

00:06 - 00:11

simulated 9500 years of Driving

00:08 - 00:13

Experience 9500 yeah and they did it

00:11 - 00:16

without using any data from you know

00:13 - 00:18

real human drivers wow so no learning

00:16 - 00:20

from our messy human habits just pure AI

00:18 - 00:21

learning from scratch right it's all

00:20 - 00:24

thanks to their system called Giga flow

00:21 - 00:26

which trains AI drivers entirely in a

00:24 - 00:28

simulated world so like a giant virtual

00:26 - 00:30

driving school but all the students and

00:28 - 00:34

the instructors are AI exact they create

00:30 - 00:36

this simplified virtual world right okay

00:34 - 00:39

and they put up to 150 AI Control agents

00:36 - 00:41

in there cars trucks bikes pedestrians

00:39 - 00:43

wow all learning from each other the

00:41 - 00:46

scale of it is unbelievable yeah how big

00:43 - 00:49

are we talking over 1.6 billion kilom of

00:46 - 00:51

driving simulated hold on 1.6 billion

00:49 - 00:53

that's like farther than the distance

00:51 - 00:55

from the Sun to Saturn it is how long

00:53 - 00:59

did that even take to run well here's

00:55 - 01:01

the kicker gigur simulates 360,000 times

00:59 - 01:03

faster than real time wait what so all

01:01 - 01:04

those thousands of years of Driving

01:03 - 01:06

Experience it took a little over a week

01:04 - 01:09

on a single computer with

01:06 - 01:12

AGP okay back up how can you simulate

01:09 - 01:13

driving that much faster than real time

01:12 - 01:16

is this some kind of Time Warp not time

01:13 - 01:18

travel just really clever optimizations

01:16 - 01:19

they use techniques like batched

01:18 - 01:21

simulation where thousands of

01:19 - 01:23

simulations run at the same time on

01:21 - 01:24

different gpus so like having tons of

01:23 - 01:26

virtual drivers learning at once yeah

01:24 - 01:27

kind of like an army of them all

01:26 - 01:29

learning and evolving together that

01:27 - 01:31

makes sense but wouldn't running all

01:29 - 01:33

those simulations still require a ton of

01:31 - 01:35

computing power surprisingly no they

01:33 - 01:37

designed Giga flow to be very

01:35 - 01:39

costeffective the whole simulation costs

01:37 - 01:42

less than $5 million per million

01:39 - 01:43

kilometers simulated seriously that's

01:42 - 01:44

cheaper than a cup of coffee all right

01:43 - 01:47

so they've got this huge simulation

01:44 - 01:48

running but how does one AI learn to

01:47 - 01:51

control all these different types of

01:48 - 01:53

vehicles do they have to train separate

01:51 - 01:55

AIS for each like one for Cars one for

01:53 - 01:56

trucks one for bikes no they don't and

01:55 - 01:59

that's what's so cool about this one

01:56 - 02:00

single train AI policy can control any

01:59 - 02:01

of the vehicles

02:00 - 02:03

really it just adjusts its parameters

02:01 - 02:05

depending on what it's controlling no

02:03 - 02:07

need to train separate AIS so it's like

02:05 - 02:08

this AI just understands how to move

02:07 - 02:11

through the world no matter what it's

02:08 - 02:13

driving yeah pretty much fascinating but

02:11 - 02:16

how do you even start training an AI

02:13 - 02:18

like that with a proof simple reward

02:16 - 02:20

system actually the AI gets rewards for

02:18 - 02:21

reaching its goal it's penalized for

02:20 - 02:23

things like collisions and it's

02:21 - 02:26

encouraged to follow traffic laws and

02:23 - 02:28

stay in its Lane so just basic safe

02:26 - 02:30

driving stuff yeah but here's the thing

02:28 - 02:32

about self-play okay as AI agents

02:30 - 02:34

interact and learn from each other they

02:32 - 02:36

start to do much more complex things

02:34 - 02:37

things that go beyond just following the

02:36 - 02:40

basic

02:37 - 02:42

rules oh interesting like what kind of

02:40 - 02:44

things like making unprotected left

02:42 - 02:47

turns and heavy traffic o yeah those are

02:44 - 02:50

tricky or navigating through bottlenecks

02:47 - 02:52

or merging smoothly onto a highway wow

02:50 - 02:54

these are all things that require like

02:52 - 02:56

real understanding of driving right

02:54 - 02:58

anticipating what others will do making

02:56 - 03:00

split-second decisions and you're seeing

02:58 - 03:02

these behaviors just emerge merged they

03:00 - 03:03

weren't programmed in exactly it's kind

03:02 - 03:06

of like watching a kid learn to ride a

03:03 - 03:08

bike at first they're wobbly and unsure

03:06 - 03:10

right but with practice they just

03:08 - 03:11

develop this like natural flow and

03:10 - 03:13

confidence that's what's happening here

03:11 - 03:15

with these AI drivers so this is more

03:13 - 03:17

like I don't know a virtual evolution of

03:15 - 03:19

driving intelligence that's a great way

03:17 - 03:20

to put it and it all happens really fast

03:19 - 03:22

because of something called Advantage

03:20 - 03:24

filtering Advantage filtering remind me

03:22 - 03:27

what that is again it basically makes

03:24 - 03:29

the AI focus on the most important parts

03:27 - 03:30

of the learning process like think about

03:29 - 03:33

about it a lot of the time you spend

03:30 - 03:35

driving is pretty uneventful right

03:33 - 03:38

driving on a straight empty road it

03:35 - 03:39

doesn't really teach you much true so

03:38 - 03:41

they filter out all those boring Parts

03:39 - 03:43

the AI focuses on the situations that

03:41 - 03:45

are more challenging like near

03:43 - 03:46

collisions or tricky Maneuvers ah so

03:45 - 03:48

it's like a highlight reel of the

03:46 - 03:50

important stuff which speeds up the

03:48 - 03:51

learning how do they even decide which

03:50 - 03:54

parts are valuable they use a metric

03:51 - 03:56

called Advantage it basically measures

03:54 - 03:57

how much better or worse the ai's action

03:56 - 03:59

was compared to all the other things it

03:57 - 04:01

could have done the experiences with a

03:59 - 04:03

High Advantage either positive or

04:01 - 04:05

negative are the ones they focus on for

04:03 - 04:08

learning so the AI isn't just learning

04:05 - 04:09

from its mistakes no it's also learning

04:08 - 04:11

from the times that made a really good

04:09 - 04:14

decision exactly it's learning from both

04:11 - 04:16

the successes and the saur and focusing

04:14 - 04:18

on the experiences that really make a

04:16 - 04:20

difference in its driving ability

04:18 - 04:23

welcome back let's take a closer look at

04:20 - 04:25

what makes Giga flow so impressive like

04:23 - 04:26

from a technical perspective all right

04:25 - 04:29

you mentioned before how they process a

04:26 - 04:30

crazy amount of data in this simulation

04:29 - 04:33

how much are we talking out here oh tons

04:30 - 04:35

we're talking 4.4 billion State

04:33 - 04:37

transitions per hour okay I'm not even

04:35 - 04:39

sure what that means it basically means

04:37 - 04:41

they're simulating about 42 years of

04:39 - 04:45

Driving Experience every hour on that

04:41 - 04:47

computer 42 years every hour that's wild

04:45 - 04:49

how is that even possible what's the

04:47 - 04:51

secret size well it's a few things

04:49 - 04:54

working together they've got a really

04:51 - 04:57

fast batched simulator a small but

04:54 - 05:00

powerful AI policy and a super efficient

04:57 - 05:01

training algorithm all right break that

05:00 - 05:03

down for me let's start with the

05:01 - 05:06

simulator what makes it so fast so

05:03 - 05:08

picture this Giga flow is running

05:06 - 05:11

38,400 simulated environments all at

05:08 - 05:13

once wow across eight gpus each

05:11 - 05:15

environment can have up to 150 vehicles

05:13 - 05:17

in it okay and all the basic

05:15 - 05:18

calculations like figuring out what

05:17 - 05:20

actions to take and updating the

05:18 - 05:22

positions of all the cars they do that

05:20 - 05:24

in batches I see so they're really

05:22 - 05:27

taking advantage of the parallel

05:24 - 05:29

processing power of those gpus right

05:27 - 05:31

it's like having a whole Army of virtual

05:29 - 05:33

drivers all learning and making

05:31 - 05:36

decisions simultaneously but how do they

05:33 - 05:38

even manage all that data wouldn't it be

05:36 - 05:40

super chaotic that's where spatial

05:38 - 05:42

hashing comes in spatial hashing yeah

05:40 - 05:45

it's kind of like a super efficient GPS

05:42 - 05:46

system for all those virtual drivers oh

05:45 - 05:49

okay it keeps track of everyone's

05:46 - 05:51

locations speeds and surroundings and

05:49 - 05:53

because the maps used in the simulations

05:51 - 05:55

can get pretty big they pre-compute all

05:53 - 05:57

the observations about the environment

05:55 - 05:59

and store it in this hash ah so it's

05:57 - 06:00

like a shared mental map for all the AI

05:59 - 06:02

drivers

06:00 - 06:04

constantly being updated exactly and it

06:02 - 06:06

makes looking up information during the

06:04 - 06:08

simulation super fast so you've got this

06:06 - 06:11

massive simulation running smoothly but

06:08 - 06:12

how can one AI Control so many different

06:11 - 06:14

agents each with their own unique

06:12 - 06:16

properties yeah that was my question too

06:14 - 06:18

the Giga flow policy itself is pretty

06:16 - 06:20

amazing it's this single neural network

06:18 - 06:22

but it's surprisingly small only 6

06:20 - 06:24

million parameters and the reason it can

06:22 - 06:26

control all these different agents is

06:24 - 06:28

that it's um

06:26 - 06:29

parameterized parameterized what does

06:28 - 06:31

that even mean are you you saying the

06:29 - 06:34

same network can drive a car a truck and

06:31 - 06:36

a pedestrian yep it's kind of like

06:34 - 06:38

giving the AI different instructions

06:36 - 06:40

depending on what it's controlling so it

06:38 - 06:41

gets this input a conditioning input

06:40 - 06:43

that tells it what type of agent it's

06:41 - 06:44

embodying at that moment and that

06:43 - 06:46

changes how it behaves without

06:44 - 06:48

retraining the whole network right no

06:46 - 06:49

retraining needed that's really

06:48 - 06:52

efficient so it's like the AI has this

06:49 - 06:54

core understanding of movement and then

06:52 - 06:55

it adapts that based of what it's

06:54 - 06:57

controlling exactly and the single

06:55 - 07:00

policy architecture is one of the big

06:57 - 07:02

reasons the system is so fast one batch

07:00 - 07:05

processing step handle millions of

07:02 - 07:07

agents at once wow okay that covers the

07:05 - 07:08

simulator and the policy what about the

07:07 - 07:10

third element you mentioned the high

07:08 - 07:12

throughput training algorithm right they

07:10 - 07:15

use a version of an algorithm called

07:12 - 07:16

proximal policy optimization but they've

07:15 - 07:19

tweaked it to work even better with

07:16 - 07:20

their setup that's the filtering part

07:19 - 07:22

right you got it they Incorporated

07:20 - 07:24

Advantage filtering directly into the

07:22 - 07:25

training process can you walk me through

07:24 - 07:27

how that works again I'm still trying to

07:25 - 07:28

wrap my head around it sure remember how

07:27 - 07:30

we talked about how a lot of driving is

07:28 - 07:32

kind of boring like just cruising along

07:30 - 07:35

a straight road yeah well Advantage

07:32 - 07:36

filtering takes that idea even further

07:35 - 07:38

it's not just about skipping over the

07:36 - 07:40

boring Parts it's about focusing on the

07:38 - 07:43

parts where the ai's decisions actually

07:40 - 07:44

matter like those close calls or those

07:43 - 07:46

difficult Maneuvers so instead of

07:44 - 07:48

learning from every second the AI is

07:46 - 07:50

learning from the most impactful moments

07:48 - 07:51

right it makes learning much faster and

07:50 - 07:53

more efficient how do they decide which

07:51 - 07:55

moments are the most impactful though

07:53 - 07:57

they use that Advantage metric basically

07:55 - 07:59

it measures how good or bad the ai's

07:57 - 08:00

choice was compared to all the other

07:59 - 08:01

options

08:00 - 08:03

the moments with a high Advantage

08:01 - 08:04

whether positive or negative get more

08:03 - 08:07

emphasis during

08:04 - 08:08

training so it's not just about learning

08:07 - 08:10

from mistakes it's about learning from

08:08 - 08:12

the really good choices too exactly it's

08:10 - 08:14

about optimizing the learning process to

08:12 - 08:15

get the most out of the simulation

08:14 - 08:17

reader that's really pleaser so we've

08:15 - 08:19

got the simulator producing all this

08:17 - 08:22

data Advantage filtering is making sure

08:19 - 08:24

the AI learns efficiently but what about

08:22 - 08:25

the neural network itself what's going

08:24 - 08:27

on under the hood there well the neural

08:25 - 08:29

network is designed specifically for the

08:27 - 08:31

challenges of driving it takes in t tons

08:29 - 08:33

of information about the environment and

08:31 - 08:35

uses that to make decisions what kind of

08:33 - 08:38

information are we talking about well it

08:35 - 08:40

gets basic stuff like the car speed its

08:38 - 08:42

position relative to the Lane the

08:40 - 08:44

curvature of the road so the basic

08:42 - 08:46

physics of driving essentially right but

08:44 - 08:48

it also gets more complex information

08:46 - 08:51

like a detailed map of the surrounding

08:48 - 08:52

area Lane markings Road boundaries

08:51 - 08:54

traffic lights so it's like it has a

08:52 - 08:56

mental map of the whole environment

08:54 - 08:58

exactly and it's not just a static map

08:56 - 09:00

the AI also gets information about the

08:58 - 09:03

movements of other other agents in the

09:00 - 09:04

environment cars pedestrians cyclists so

09:03 - 09:06

it's aware of everything that's moving

09:04 - 09:07

around it that seems like a lot to

09:06 - 09:09

process it is but the network is

09:07 - 09:11

designed to handle it efficiently for

09:09 - 09:14

example instead of keeping the entire

09:11 - 09:16

map in memory it uses these pre-computed

09:14 - 09:17

representations that it can access

09:16 - 09:20

really quickly based on the ai's current

09:17 - 09:21

location so it's only focusing on the

09:20 - 09:23

relevant parts of the map at any given

09:21 - 09:25

time yeah exactly they use similar

09:23 - 09:27

techniques to keep track of the other

09:25 - 09:28

agents in the environment so the AI

09:27 - 09:31

knows where everyone is and how they're

09:28 - 09:33

moving yes but it doesn't know things

09:31 - 09:35

like their goals or intentions that's

09:33 - 09:36

important because in the real world you

09:35 - 09:38

don't know what other drivers are

09:36 - 09:41

thinking right right so the AI has to

09:38 - 09:42

learn to predict their behavior based on

09:41 - 09:44

what it can actually see just like a

09:42 - 09:46

human driver that makes sense so they've

09:44 - 09:48

created this system where the AI has to

09:46 - 09:50

learn to drive defensively and

09:48 - 09:52

anticipate the actions of others exactly

09:50 - 09:54

and this ability to handle these

09:52 - 09:56

multi-agent interactions is what makes

09:54 - 09:58

Giga flow so robust this is also

09:56 - 10:00

impressive do we walk through how the

09:58 - 10:02

training actually works like how does

10:00 - 10:04

the AI actually learn to drive okay so

10:02 - 10:07

imagine the AI gets dropped into a

10:04 - 10:09

random spot on the map okay and it's

10:07 - 10:10

given a random destination so it's like

10:09 - 10:13

being thrown into a new city and told to

10:10 - 10:14

find your way somewhere right and the AI

10:13 - 10:16

has to figure out how to get there

10:14 - 10:19

safely efficiently following the rules

10:16 - 10:20

of the road navigating around all these

10:19 - 10:22

other agents that's quite the challenge

10:20 - 10:25

what happens next the AI uses its neural

10:22 - 10:27

network to decide what to do accelerate

10:25 - 10:29

break turn left turn right some

10:27 - 10:31

combination of those okay and then the

10:29 - 10:33

simulator updates the world based on

10:31 - 10:35

that action so it's constantly making

10:33 - 10:36

decisions and seeing the results of

10:35 - 10:39

those decisions exactly and based on

10:36 - 10:41

what happens it gets either a reward or

10:39 - 10:42

a penalty remember rewards for reaching

10:41 - 10:44

goals penalties for things like

10:42 - 10:46

collisions so it's learning through

10:44 - 10:48

trial and error basically yeah but at a

10:46 - 10:50

massively accelerated Pace that's the

10:48 - 10:53

beauty of simulation it can cram years

10:50 - 10:55

of experience into just a few days okay

10:53 - 10:57

so the AI is driving making decisions

10:55 - 10:58

getting feedback how does it actually

10:57 - 10:59

improve how does it get better at

10:58 - 11:02

driving that's where the reinforcement

10:59 - 11:03

learning part comes in the AI uses all

11:02 - 11:05

that feedback those rewards and

11:03 - 11:07

penalties to adjust its neural network

11:05 - 11:09

so it's constantly refining its ability

11:07 - 11:11

to choose actions that lead to good

11:09 - 11:13

outcomes it's like it's constantly

11:11 - 11:15

analyzing its own driving and making

11:13 - 11:17

adjustments to improve exactly and

11:15 - 11:19

because it's learning from such a

11:17 - 11:21

diverse set of experiences it becomes a

11:19 - 11:23

much more robust driver than systems

11:21 - 11:24

trained using traditional methods this

11:23 - 11:26

is starting to sound like we're on the

11:24 - 11:28

verge of reaing some truly intelligent

11:26 - 11:30

self-driving cars but how does this all

11:28 - 11:32

Translate to to the real world that's

11:30 - 11:33

the real test right absolutely and

11:32 - 11:35

that's exactly what we're going to

11:33 - 11:36

explore next we'll see how Giga flow

11:35 - 11:38

performs when it's faced with the

11:36 - 11:40

complexities of real world driving

11:38 - 11:42

scenarios all right so we've spent the

11:40 - 11:44

last two parts learning about this Giga

11:42 - 11:46

flow system simulating thousands of

11:44 - 11:49

years of Driving Experience in a virtual

11:46 - 11:51

world but the big question is can this

11:49 - 11:53

AI trained entirely in simulation

11:51 - 11:55

actually handle driving in the real

11:53 - 11:57

world yeah that's the key right to find

11:55 - 12:00

out they tested Giga flow on three

11:57 - 12:03

different benchmarks for autonomous

12:00 - 12:04

driving okay Carla new plan and Whos

12:03 - 12:06

waymax I've heard of those they're not

12:04 - 12:09

easy tests are they nope not at all each

12:06 - 12:11

bench mark has its own challenges like

12:09 - 12:13

what well Carla tests the AI on longer

12:11 - 12:16

driving scenarios with things like

12:13 - 12:19

pedestrians suddenly jaywalking or cars

12:16 - 12:21

swerving unexpectedly oh new plan uses

12:19 - 12:23

real world map data and has more

12:21 - 12:25

reactive less predictable traffic it's

12:23 - 12:27

closer to real driving conditions makes

12:25 - 12:30

sense and wh Mo's waymax what's that one

12:27 - 12:32

about waymax uses a huge amount of real

12:30 - 12:34

world driving data from wh Mo's

12:32 - 12:36

self-driving car so it's like a library

12:34 - 12:38

of the hardest and most varied driving

12:36 - 12:39

situations they've encountered so

12:38 - 12:41

they're throwing some really tough

12:39 - 12:44

challenges at this Ai and it's all data

12:41 - 12:46

from Real World Systems exact but they

12:44 - 12:48

didn't try to change gigow for these

12:46 - 12:49

tests right like fine-tune it no they

12:48 - 12:51

didn't they wanted to see how well it

12:49 - 12:53

could adapt to new situations so they

12:51 - 12:55

ran it zero shot meaning meaning gigow

12:53 - 12:57

had never seen any of the data from

12:55 - 12:59

these benchmarks before it was going in

12:57 - 13:01

totally blind wow that's a bold move

12:59 - 13:03

usually AIS are trained on the specific

13:01 - 13:05

benchmarks they're going to be tested on

13:03 - 13:07

so how did Giga flow do this is the

13:05 - 13:09

really cool part Giga flow even though

13:07 - 13:12

it was trained entirely in a simulation

13:09 - 13:14

it actually beat AI systems that were

13:12 - 13:17

specifically trained on real world data

13:14 - 13:19

on all three benchmarks seriously an AI

13:17 - 13:22

trained in a simulation outperformed

13:19 - 13:24

systems trained on real data how is that

13:22 - 13:26

even possible think about it gigow went

13:24 - 13:28

through so much training right billions

13:26 - 13:30

of kilometers thousands of years of

13:28 - 13:32

experience so it developed a really

13:30 - 13:34

Broad and adaptable understanding of

13:32 - 13:37

driving more so than those systems

13:34 - 13:39

trained on smaller real world data sets

13:37 - 13:41

Okay I could see that but did it

13:39 - 13:43

actually drive like a human or was it

13:41 - 13:45

just following the rules really rigidly

13:43 - 13:47

to find that out they looked closely at

13:45 - 13:49

how the AI was making decisions and they

13:47 - 13:50

found some amazing stuff Giga flow was

13:49 - 13:52

doing things that you'd expect from a

13:50 - 13:54

human driver making unprotected left

13:52 - 13:57

turns and busy traffic navigating

13:54 - 13:58

bottlenecks merging smoothly into

13:57 - 14:00

traffic so it wasn't just following a

13:58 - 14:03

set of rules it was making strategic

14:00 - 14:04

decisions based on the situation like a

14:03 - 14:06

person would yeah exactly and it wasn't

14:04 - 14:07

just reacting to what was right in front

14:06 - 14:10

of it either it was actually planning

14:07 - 14:12

ahead anticipating future events and

14:10 - 14:13

making decisions based on that you mean

14:12 - 14:15

like changing its route based on traffic

14:13 - 14:16

further down the road yeah things like

14:15 - 14:18

that that's really impressive what about

14:16 - 14:20

safety did it ever make any mistakes

14:18 - 14:22

with all this complex driving well one

14:20 - 14:24

of the most impressive findings was Giga

14:22 - 14:26

flow's safety record they ran these long

14:24 - 14:28

simulations designed to really push it

14:26 - 14:30

to its limits okay and the average time

14:28 - 14:34

between accidents for the Giga flow

14:30 - 14:36

agents was 17.5 years 17.5 years that's

14:34 - 14:37

way better than the average human driver

14:36 - 14:39

how do they measure that in the

14:37 - 14:41

simulation they set up a special testing

14:39 - 14:44

environment within Giga flow designed

14:41 - 14:45

for long-term safety they removed some

14:44 - 14:48

of the randomness from the training

14:45 - 14:50

environment sped up how fast the AI made

14:48 - 14:52

decisions to be more like real world

14:50 - 14:54

conditions and they really emphasized

14:52 - 14:56

safe driving in the reward system so it

14:54 - 14:59

was like a super intense driving exam

14:56 - 15:01

and Giga flow aced it exactly it was

14:59 - 15:03

incredibly stable consistently avoided

15:01 - 15:05

accidents which really shows how

15:03 - 15:07

powerful self-play and reinforcement

15:05 - 15:09

learning can be for creating safe AI

15:07 - 15:10

systems this is all amazing but

15:09 - 15:12

realistically are we going to have Giga

15:10 - 15:15

flow powered cars on the roads anytime

15:12 - 15:18

soon maybe not tomorrow but the research

15:15 - 15:20

is incredibly promising sure I mean

15:18 - 15:24

gigow was trained in a simp oh wait

15:20 - 15:26

someone wants to join hey go for it hey

15:24 - 15:30

thank you for your sharing and can we

15:26 - 15:30

talk about the word analization

15:34 - 15:36

absolutely I'm glad you ask

15:35 - 15:38

initialization is a really important

15:36 - 15:40

part of the process here yeah and it's a

15:38 - 15:42

great question because it really

15:40 - 15:44

highlights how they manag to make this

15:42 - 15:46

system so efficient so when we talk

15:44 - 15:48

about initialization in this context it

15:46 - 15:51

refers to how they set up the starting

15:48 - 15:52

conditions for each simulated Drive okay

15:51 - 15:54

so it's like where the AI drivers start

15:52 - 15:56

from and what their goals are exactly

15:54 - 15:58

they use two main techniques to speed

15:56 - 16:01

this up first they create a big pool of

15:58 - 16:03

r starting points and then they pull

16:01 - 16:05

from that pool as they need new initial

16:03 - 16:06

positions for each car oh so instead of

16:05 - 16:08

generating each starting position from

16:06 - 16:09

scratch every time they have this

16:08 - 16:11

pre-made

16:09 - 16:13

buffer exactly that saves a lot of

16:11 - 16:15

computing time got it and then the

16:13 - 16:17

second part is how they place all the

16:15 - 16:19

cars without having them all start in a

16:17 - 16:20

pileup yeah that makes sense you

16:19 - 16:22

wouldn't want a massive crash before the

16:20 - 16:24

simulation even gets started right they

16:22 - 16:26

use something called sequential

16:24 - 16:28

rejection sampling where they add one

16:26 - 16:30

car at a time making sure it's not

16:28 - 16:34

colliding with any existing cars so it's

16:30 - 16:37

like carefully placing each car so that

16:34 - 16:39

everyone is starting in a safe spot yeah

16:37 - 16:41

these smart methods allowed them to keep

16:39 - 16:43

the simulation running smoothly without

16:41 - 16:45

constant crashes and restarts letting

16:43 - 16:47

them get to that massive scale we talked

16:45 - 16:49

about okay that makes sense so it's not

16:47 - 16:51

just about having a cool AI it's also

16:49 - 16:53

about setting up the simulation in a

16:51 - 16:55

Smart Way exactly now back to where we

16:53 - 16:57

were Giga flow was trained in a

16:55 - 16:59

simplified version of reality right so

16:57 - 17:01

there's still work to do to bridge the

16:59 - 17:03

gap between simulation and real world

17:01 - 17:05

driving so how do they do that how do

17:03 - 17:06

they make the jump from the virtual

17:05 - 17:08

world to the real world well the

17:06 - 17:10

researchers have some ideas for one they

17:08 - 17:13

want to use more realistic sensor data

17:10 - 17:15

in the simulations okay so instead of

17:13 - 17:17

having perfect information about the

17:15 - 17:20

environment the AI would have to make

17:17 - 17:22

decisions based on data from cameras lar

17:20 - 17:23

you know things like that like a real

17:22 - 17:25

self-driving car so it would be like

17:23 - 17:28

experiencing the messiness of the real

17:25 - 17:30

world but still in a safe simulated

17:28 - 17:33

setting right another idea is to combine

17:30 - 17:34

self-play with real world driving data

17:33 - 17:37

interesting so not just one or the other

17:34 - 17:39

but a mix of both exactly like maybe use

17:37 - 17:42

immocation learning where the AI learns

17:39 - 17:45

by watching human drivers or incorporate

17:42 - 17:48

actual real world driving

17:45 - 17:50

scenarios so can we just wrap up and get

17:48 - 17:50

the

17:53 - 17:56

conclusion of course I understand you're

17:55 - 17:57

ready for the wrap up yeah we can

17:56 - 17:59

definitely get to that conclusion for

17:57 - 18:01

you now before we do though I think it's

17:59 - 18:03

worth briefly mentioning the other ideas

18:01 - 18:04

the researchers had yeah just to tie it

18:03 - 18:06

all together so they were thinking about

18:04 - 18:09

things like incorporating more real

18:06 - 18:11

world sensor data right so like camera

18:09 - 18:14

and liar data and they also wanted to

18:11 - 18:16

explore combining the self-play with

18:14 - 18:18

actual driving

18:16 - 18:20

data exactly things like imitation

18:18 - 18:22

learning and incorporating real world

18:20 - 18:24

scenarios directly into the simulation

18:22 - 18:26

but okay with that said let's get to the

18:24 - 18:27

big takeaway this has been a deep dive

18:26 - 18:30

right absolutely we've covered so much

18:27 - 18:32

ground yeah from the crazy scale of the

18:30 - 18:33

Giga flat simulations where they racked

18:32 - 18:35

up thousands of years of Driving

18:33 - 18:37

Experience to how they used this

18:35 - 18:40

Innovative self-play method to train a

18:37 - 18:42

powerful Ai and how that AI even though

18:40 - 18:44

it was trained only in a virtual world

18:42 - 18:46

actually outperformed systems that were

18:44 - 18:49

trained on real world data it really

18:46 - 18:52

does show the potential for self-play

18:49 - 18:54

and AI to revolutionize the future of

18:52 - 18:56

Transportation it really is incredible

18:54 - 18:58

This research shows that we're getting

18:56 - 19:00

closer to safe and reliable self-driving

18:58 - 19:02

cars and it's all thanks to this

19:00 - 19:04

Innovative system and the researchers

19:02 - 19:05

who developed it so that wraps up our

19:04 - 19:07

Deep dive for today thanks for joining

19:05 - 19:09

us and engaging with us yes it was great

19:07 - 19:10

to have you along for the ride keep

19:09 - 19:13

exploring keep learning and we'll see

19:10 - 19:15

you next time thanks again and goodbye

19:13 - 19:15

for

19:26 - 19:32

now ah yeah uh-huh

19:29 - 19:35

so the human data is not very important

19:32 - 19:35

from this

19:38 - 19:41

pay-per-view that's a really insightful

19:40 - 19:43

point and it gets to the heart of This

19:41 - 19:46

research yeah it's not that human

19:43 - 19:48

driving data is completely unimportant

19:46 - 19:50

but this paper really challenges the

19:48 - 19:52

traditional idea that it's absolutely

19:50 - 19:54

essential right like usually you'd think

19:52 - 19:56

an AI would need to learn from tons of

19:54 - 19:59

human driving examples and while human

19:56 - 20:01

data can be helpful this work shows that

19:59 - 20:03

a lot of really robust and complex

20:01 - 20:05

driving behaviors can emerge purely from

20:03 - 20:10

self-play so the AI is learning from its

20:05 - 20:10

own experiences in the simulated world

Unleashing the Future: AI Driving Experience Simulated Over 9500 Years

In an astonishing new advancement, researchers have utilized the Giga Flow system to simulate an incredible 9500 years of driving experience purely through artificial intelligence, without relying on any human data. This innovative approach demonstrates how AI can learn to navigate complex driving environments, evolving its behaviors over time while focusing on safety and adaptability. This article delves into the groundbreaking methods employed by Giga Flow and how this technology could reshape self-driving vehicles.

The Giga Flow System: Understanding the Basics

Giga Flow is designed to emulate a massive virtual driving school where AI agents learn entirely from simulated experiences. By creating simplified, controlled environments, researchers can place up to 150 AI-controlled agents in various vehicles—cars, trucks, bikes, and pedestrians—to learn and interact with each other.

An Unprecedented Scale of Simulation

The scale of this project is staggering. Researchers have achieved over 1.6 billion kilometers of driving, comparable to the distance from the sun to Saturn. This was made possible because Giga Flow operates at a remarkable speed, simulating driving scenarios at 360,000 times faster than real time. In practice, this means that thousands of years of experience were condensed into a mere week on a single processing computer.

Optimization Techniques: Making Learning Efficient

How can such efficient simulations be achieved? Giga Flow employs sophisticated optimization techniques such as batched simulations, allowing thousands of AI agents to learn simultaneously across multiple GPUs. To put it simply, it’s like training a whole army of virtual drivers at once, leveraging parallel computing to maximize efficiency.

Learning to Drive: The AI’s Reward System

So how does the AI learn to control different types of vehicles—do they need separate training protocols? Surprisingly, no. A single AI policy can control any type of vehicle by adjusting its parameters according to its current task.

Reward and Penalty Mechanisms

The AI is trained using a reward-based system, where it receives rewards for successful navigation and is penalized for collisions or rule-breaking. This encourages safe and efficient driving behavior. Through self-play, as agents interact and learn from one another, they develop increasingly complex and human-like behaviors.

Advantage Filtering: Focusing on What Matters

One of the critical innovations is the concept of "advantage filtering." Instead of wasting time on uneventful straight roads, this technique helps the AI focus on complex situations that require intense attention, such as navigating through traffic and avoiding potential collisions. By emphasizing these critical moments, the AI’s learning process becomes both faster and more effective.

The Training Process: Reinforcement Learning in Action

The AI begins with random placements in a driving environment and must navigate to various destinations while adhering to traffic rules. What happens next is a cycle of rapid learning and adaptation as it receives feedback (both rewards and penalties) for its actions. This is where reinforcement learning shines, enabling the AI to continually adjust its strategy based on past experiences, leading to better, safer driving behavior.

Bridging the Gap: From Simulation to Reality

A vital question remains: will AI trained in simulation like Giga Flow be effective in real-world scenarios? Researchers sought to answer this by testing Giga Flow on three challenging benchmarks for autonomous driving: Carla, New Plan, and Waymax. Remarkably, despite being solely trained in a virtual environment, Giga Flow outperformed traditional AI systems that used real-world data.

Real-World Benchmarks

  • Carla: Emphasizing longer driving scenarios filled with unexpected elements like pedestrians and erratic vehicle movement.
  • New Plan: Utilizing real-world mappings with unpredictable traffic scenarios.
  • Waymax: Drawing from a library of real-world driving data, posing tough challenges for the AI.

The results showed that Giga Flow not only understood the rules of driving but also demonstrated advanced decision-making abilities akin to human behavior.

Conclusion: A Promising Future for Autonomous Vehicles

While we may not see Giga Flow powered cars on the road overnight, this research signifies a significant leap forward in AI-driven technology. By demonstrating the potential for self-driving systems to evolve through self-learning—beyond human data—Giga Flow offers a hopeful glimpse into the future of safe and intelligent transportation.

Exploring Further: What Lies Ahead?

As the researchers continue to tweak their methods, incorporating more realistic sensory inputs and blending self-play with real-world data, we inch closer to a future where autonomous driving is a viable and safe option for everyday commuters. The journey is just beginning, and the possibilities are endlessly fascinating. As researchers explore, innovate, and optimize, we can expect to see more impressive developments in AI and transportation in the coming years.

Keep an eye on this evolving field; the future of driving could look remarkably different, guided by the intelligent hands of Giga Flow AI.