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The Law of Large Numbers and Fat Tailed Distributions 

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How to make a statistical inference in fat tailed domain. Typically statisticians don't deal with power laws, which is left to physicists who, owing to the stability of their domain, do not do statistical inference. We show errors of using the sample mean as an estimate. The presentation discusses some papers including debunking bogus statistics of the drop in violence.

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29 май 2015

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Комментарии : 37   
@teddyregrets8384
@teddyregrets8384 2 года назад
My inspiration! I teach undergrad Math Stats recitation at NYU Courant, and I always make sure to talk about power laws and show them a simulation like what you showed at 13:36 ... it blows my mind that nobody explains this stuff when they teach basic statistics!!
@jstock2317
@jstock2317 9 лет назад
It's quite interesting to realize these ideas aren't taking into account human behavior. They show that we would need to approach risk differently even if everyone were ethical and transparent. Thanks for your work Mr. Taleb!
@imperatoreTomas
@imperatoreTomas 5 лет назад
After reading your books that includes maybe 8 times and still not fully understanding everything I find this video extremely helpful and supplemental. You should make more supplemental videos
@Senecamarcus
@Senecamarcus 3 года назад
What are some of your takeways from his work?
@Learna_Hydralis
@Learna_Hydralis Год назад
@@Senecamarcus for me his works is basically a reformation of the narrative I use in my everyday life from narrative that consider the past and present into a narrative that also consider the future (which hidden and do not exist yet!).
@behrad9712
@behrad9712 Год назад
Unbelievable! Great honor to know you Nassim, you lighted my darkness of randomness! Best wishes from Iran...👌🙏
@rajmalhotra7709
@rajmalhotra7709 4 года назад
It took me 2 years to understand only 25% of the content described in this video and I am watching it again to understand more. And my education is postdoctoral status in STEM. Truly ahead of time content.
@jeroen6275
@jeroen6275 3 года назад
Same, I only get the general gist of it.
@Fightclub1995
@Fightclub1995 3 года назад
If you follow a masters course on extreme value theory, you can somewhat follow this
@johnanderson1916
@johnanderson1916 9 лет назад
I think audio quality would have a concave curve. Quality is maximum when the needle is at reference deflection of the VU meter, in other words 0 VU. The left side of the curve suffers from poor signal to noise ratio and the right side suffers from distortion.
@alexblack8780
@alexblack8780 7 лет назад
This guy is So fucking intelligent.... Respect from me
@srh80
@srh80 4 года назад
Watching this for 10th time in a row, will probably need 10 more to completely understand this small facet of anti fragility!
@gianlucalepiscopia3123
@gianlucalepiscopia3123 3 года назад
It took 3 times for me man, I guess the basic idea is understanding how and when then LLN works (Chebyshev inequality)
@spencerantoniomarlen-starr3069
@spencerantoniomarlen-starr3069 10 месяцев назад
​@@gianlucalepiscopia3123 bingo
@michaelvail4071
@michaelvail4071 Год назад
Thank you. Very informative. If you could turn up the volume of your micro, that would be wonderful. 😊
@slovokia
@slovokia 9 лет назад
Hi, I find the audio for this video segment to be barely intelligible and I think I know what the problem is. I'd guess the audio was recorded using a webcam. Now some webcam software does a form of processing on the audio in order to try to eliminate background noise. Unfortunately if this processing is done too aggressively or if the sounds being recorded are too faint, what will happen is that quieter sounds are either made even more quiet or cut off entirely. Either way the end result is recorded speech that cannot be easily understood. The solution is to disable this processing. If you are using a logitech webcam I'd suggest disabling the RightSound option in the logitech webcam controller. When you do that you will notice that audio recorded will have a background hiss - that is o.k. because it means low level signals will not be cut off and as a result soft speech will actually become more intelligible again. For really good audio a better bet is to buy a USB based microphone of decent quality and use that instead. You may also want to do some dynamic range compression on the recording afterwards as well as some slight equalization boosts if necessary. But that will require more complicated processing software.
@mikiallen7733
@mikiallen7733 4 года назад
Thanks sir , that was very meaningful to my and my current work
@ozgeozcelik8921
@ozgeozcelik8921 6 лет назад
barely audible but still thousands of times worth watch
@draganostojic6297
@draganostojic6297 2 года назад
If I get the essence, can we trust or to which extent we can trust a random sample of a fat tail distribution to make sensible inferences?
@gstalbert5449
@gstalbert5449 9 лет назад
I just came across this. Not a complete idiot but I'm trying to work my way up to a gut feel, you look at it an know. Thx for this!
@tallsamurai7861
@tallsamurai7861 3 года назад
Why is there a soda in the middle of probability distribution slides.
@timthompson468
@timthompson468 3 года назад
Thanks.
@nntalebproba
@nntalebproba 3 года назад
You're welcome
@re_di_roma_is_back2388
@re_di_roma_is_back2388 4 года назад
Excellent. I was wondering what are the implications of this in econometric modeling (especially macro-econometric models).
@mikiallen7733
@mikiallen7733 4 года назад
Look at the exponent of your time series changes
@artieboy24
@artieboy24 4 года назад
Don't get Mr. Taleb started on econometrics!
@she-vc2788
@she-vc2788 4 года назад
I love how he said Physicist care about Power laws they prefer to be clean and do not care about stats consequences of the fat tails. I'm reading his current statistical consequences in fat tails now.
@Wonderboywonderings
@Wonderboywonderings 9 лет назад
Yeah. Needs to be louder.
@waleeddawalebi7850
@waleeddawalebi7850 3 года назад
لماذا لا تحاضر باللغة العربية، دكتور؟
@Felicidade101
@Felicidade101 3 года назад
It would be nice to have the slides Ill screenshot them for now I guess :D
@mopsnuf
@mopsnuf 9 лет назад
Thank you for sharing.
@maxsagibgareev
@maxsagibgareev 9 лет назад
The video is great, but so quite...
@qazaqtatar
@qazaqtatar 4 года назад
Modern way of giving a seminar
@copiludeargint
@copiludeargint 4 года назад
Don t be afraid to take a sip of water from time to time