This is the exact meaning of "The simplest and best explanation".
@muhannedalsaif1532 жыл бұрын
and beautiful!
@hansenmarc2 жыл бұрын
Best explanation of Gini impurity I’ve ever seen. Thank you!
@RogerVandervort3 жыл бұрын
This explanation is, by far, one of the most simple and direct. It drives an intuitive understanding of the calculation.
@celismaroliveira60815 ай бұрын
That is the best explanation of Gini impurity I’ve ever seen! Even 8-year-old children can get it. Amazing! Congrats Luis Serrano/Serrano Academy!!
@supersql84063 жыл бұрын
The best gini index explanation!!
@reverse_engineered3 жыл бұрын
What a great and simple way to explain it! I love these visual demonstrations.
@skamal4u2 жыл бұрын
one of the best explanation ever . so simple and easy to follow 👏👏👏
@srisrinivas98733 жыл бұрын
Very intuitive and easy to grasp. Thanks for your effort Luis Serrano.
@JaviOrman3 жыл бұрын
What an intuitive explanation!
@ssshukla263 жыл бұрын
Wow... It was this simple... Certainly I didn't learn this simply enough to understand at my uni... Not my prof's fault btw...
@shubha07m Жыл бұрын
THE Best explanation of Gini index ever, YOU are awesome!
@73693911 ай бұрын
The real scientist can explain everything by the simple terms. You're the real scientist and thank you very much, unfortunately there are not so many scientist (especially physicians) who are able to use simple language.
@marcinstrzesak346 Жыл бұрын
Very good explanation. Thank you
@Q7931482102 жыл бұрын
This is the best gini index video by far ! thankyou
@tooniatoonia28302 жыл бұрын
This man called Luis is a genius, I take Udacity course because of you!
@joragondafacultyeeedept309 Жыл бұрын
Great Serrano. Best of the presentations I have come across. You are a great teacher. Kudos
@abeferszt24089 ай бұрын
One of the best explanations I've seen
@alioraqsa Жыл бұрын
best explanation i've seen so far
@developerboy83413 жыл бұрын
Probably best I got the best intuition of Gini index from it, can't thank you enough Man.
@alokranjancs2 жыл бұрын
I rarely put comments on youtube but this is such a nice explanation of the concept. Thank you
@bryanbischof43513 жыл бұрын
Great visualizations and explanations.
@SerranoAcademy3 жыл бұрын
Thank you Bryan!
@abail70108 ай бұрын
This is such a good and intuitive explanation. Well done and thank you!!
@kirtichandrakomarraju51642 жыл бұрын
Explained like a King !!
@wanderbeautyE Жыл бұрын
Thank you for your explanation!!! I finally understood what GINI impurity index means!! :D
@xxelurraxx232 Жыл бұрын
This was a fantastic explanation of the formula! The visuals helped a ton. Thank you so much!
@johannahultgren2887 Жыл бұрын
Wow this was so good explained!😍 i'm an AI and neuroscience student and your videos are helping me out a lot!🙏
@alexbuchko323 Жыл бұрын
This is an amazing explanation, I didn't know it was that simple!
@VivianSam-l6i11 ай бұрын
Great explanation, able to understand in one go!!
@abdulkarim.jamal.kanaan3 жыл бұрын
this is the best explanation; I hope the book is as easy to understand as this one :)
@zukofire6424 Жыл бұрын
Thanks Pr. Serrano for this! It helps prepare for my exam! :)
@TheDavidlloydjones3 жыл бұрын
Bug Report: Audio vs. video glitch at 0:57~1:01. Spoken "on the right it's gonna be 0.47." Video shows 0.7.
@VidyaBhandary3 жыл бұрын
Awesome explanation ! Thank you for this.
@TheSoonAnn Жыл бұрын
thanks for explanation, concise and clear
@mohamedgaal53403 жыл бұрын
Thanks for this concise explanation!
@shaporovanatalia6805 Жыл бұрын
Best explanation ! Thank you!
@flaviospadavecchia51263 жыл бұрын
Thank you, Luis! I'm enjoying your book very much :)
@srinivasachary73923 жыл бұрын
Wow... Great. Superb Explanation
@denisr52505 ай бұрын
This was an awesome explanation! One small question (maybe correction?) - at around 7:20 shouldn't the Gini index of the diverse set be 1 - (0 + 0 + ... +0) since the probability of getting the same element twice is 0 - there are 10 unique elements i.e. no duplicates, so it's impossible to pick two of the same item.
@kishorab2 жыл бұрын
Is Gini index being calculated with replacement. Blue,red,green,yellow squares consist of items being paired with themselves. If an item is picked it can only be paired with itself by replacing it back.
@arshadkazi45592 жыл бұрын
Amazing, just what I wanted!
@vaibhavmishra232 Жыл бұрын
very geniously explained
@apristen3 жыл бұрын
thanks for great easy to understand explanation!!!
@marekglowacki26073 жыл бұрын
Great explanation! Could you make an video on Gini Impurity Index vs Gini Coefficient?
@fadhlallahbaklouti91112 ай бұрын
Love the explanation
@fabio336ful Жыл бұрын
Th explanation I was looking for!
@usmanriaz942 жыл бұрын
I thought maximum value of gini index is .5. i am confused. can somebody help ?
@thegreatdream84273 жыл бұрын
This is basically a measure of average distance between pairs of points in a space. In this case all the points are vertices of a regular unit simplex, so if two elements are the same they're the same point, and if different their distance is 1. If instead you have degrees of difference - distances in type-of-thing-space - the simple formula using squares would stop working, but it would fit the real world better. :)
@ritikchopra44293 жыл бұрын
Hey, great explanation but I have a doubt, why are we allowed to pick the same element twice?
@scooby952193 жыл бұрын
very good explanation. thank you!
@shashanktripathi30343 жыл бұрын
This Really helped Great Work Thanks
@alphonseinbaraj76023 жыл бұрын
Wonderful... Great explanation
@michelcusteau3184 Жыл бұрын
You mention that Gini Impurity is going to give values between the range of 0 - 1, However from other sources it says that the Gini Impurity only going to output values between the range of 0 - 0.5 . Is this a mistake in the video?
@siddarthbali123 жыл бұрын
Great explanation
@ian-haggerty4 ай бұрын
Awesome! You've sold another book :)
@SerranoAcademy4 ай бұрын
Yay thanks! Enjoy, and lemme know what you think!
@MariaFlorenciay2 жыл бұрын
Very well explained!
@thanhtung24 Жыл бұрын
Best explanation
@mshirazbaig60552 жыл бұрын
Good explanation
@fobos61663 күн бұрын
Im very thankfull sir
@karmabender3 жыл бұрын
Awesome explanation. This is part of Decision Tree algorithm but you are not making any video on Decision Tree. How Decision tree algo makes nodes and condition itself without applying our own if else statement? Clear explanation on internal working of Decision Tree is not available on youtube that how it works from scratch only using python without using any library like sklearn.
@mattcobras2 жыл бұрын
that's awesome, I like your lesson.
@grantsmith36533 ай бұрын
Perfect! Thank you!!
@oatmilk9545 Жыл бұрын
I don't get the last example with 10 different classes. in this case, we're never going to have a pair of equal elements (which you started your video with); and in the square where we seek for intersections of two classes, we'll have just an empty cell for each pair of elements from the same class because, again, their pairing isn't possible
@emrahyener4023 жыл бұрын
You are great! keep going please!
@刘鹏宇-k7f2 жыл бұрын
Thank you very much.
@forpublicstuff7282 жыл бұрын
Awesome! Thank you.
@angjelinhila927 Жыл бұрын
Je suis confus. Isn't max gini standardized to 0.5? In other words 1 - (0.5^2 + 0.5^2) = 0.5?
@eric_bonucci_data Жыл бұрын
This definition of the Gini index is different from the one in Introduction to Statistical Learning with R (Equation 8.6 p.335), could you please elaborate on that ? Thank you
@eric_bonucci_data Жыл бұрын
I just figured it out : the sum of the proportion of training observations over all classes is equal to 1, so sum(pk(1-pk)) = 1 - sum(pk^2)
@eric_bonucci_data Жыл бұрын
Knowing that other definition from ISLR also helps to understand why the Gini index can be seen as the probability of sampling two observations of different class in the dataset.
@chanduiit423 жыл бұрын
The best..the best one
@jerrerock2 жыл бұрын
Thanks.
@laviusdev37632 жыл бұрын
@stephennjuki4206 Жыл бұрын
thanks. very succinct.
@ahmadawad47823 жыл бұрын
It seems that the link is wrong. Gives error 404, page not found.
@SerranoAcademy3 жыл бұрын
Thank you Ahmad! Fixed
@ahmadawad47823 жыл бұрын
@@SerranoAcademy Thanks. Just purchased an ebook copy. Can't wait to read through.
@SerranoAcademy3 жыл бұрын
@@ahmadawad4782 so glad to hear, thank you! I hope you like it! :)
@alexvass10 ай бұрын
Thanks
@SerranoAcademy10 ай бұрын
@alexvass thank you so much for your kindness!!
@shubhamtalks97182 жыл бұрын
Amazing!!!
@tourdesource22 күн бұрын
Shouldn't we eliminate the diagonal? It doesn't make sense to pick the same element twice.
@SerranoAcademy21 күн бұрын
@@tourdesource good point! I thought the same thing, since it makes sense to not take the diagonal, but for some reason they defined it that way. Removing the diagonal, the formula changes from 1-p_1^2-…-p_k^2 to 1-1/n - [p_1^2-…-p_k^2]*(n-1)/n So at the end, it will give the same decision tree.
@tourdesource21 күн бұрын
Got it. Simpler formula, same result. Thanks a lot for answering!
@ger95512 жыл бұрын
what happens if all gini index is 0?
@vaggelisntaloukas20162 жыл бұрын
Thanks!
@SerranoAcademy2 жыл бұрын
Thank you so much for your kind contribution Vaggelis! 😊
@noelthomasbejoy30893 жыл бұрын
if theres only oneof them ,how can 1/10 ^2 exist.Since it cant be selected twice?
@shripaddeshpande57663 жыл бұрын
I guess its sampling with replacement.
@abdelrhmanrhyaseen61942 жыл бұрын
Amazing
@prackertracker71893 жыл бұрын
2:33 here you say gini is the propability of picking two distinct data points of a data set. At the end you present a totally diverse data set and say the gini index is 0.9. How is that possible since the propability of picking two totally different data points i 100% because we only have distinct and none data points that are the same?
@loftyTHEOWNER2 жыл бұрын
I understood there is no sampling. Just a matrix of all the observations. So for 10 different objects, we have a matrix 10x10 and the elements on the diagonals are equal of course, so you d0 (100 - 10) / 100 = 0.9
@nijat67042 жыл бұрын
As I know the Gini index ranges between 0 and 0.5. So the answer that you found seems wrong
@bhaveshvoswal3 жыл бұрын
Nice
@camzbeats69933 ай бұрын
Top
@milenkoobradovic28962 жыл бұрын
👏👏👏
@kabilakamal82693 жыл бұрын
Well explained 👍 Another precise detailed video like that of “Matrix Factorization” 😂 Please can I have your contact email. I’d like to reach you personally. Thank you
@SerranoAcademy3 жыл бұрын
Thank you Kabila! Absolutely, the best way to get in touch is through here serrano.academy/contact/