@@statquest It went well, thank you! Hopefully I get good grades. I was thinking of suggesting that it would be great if you could cover Markov Chain Monte Carlo and related topics. Thank you again! Your channel has been incredibly helpful!
These videos are just amazing and clearly are extremely successful in simplifying topics that are usually thought of as difficult. Can you please also make videos on its code in python/R..? and of naive bayes too maybe. That would be super useful. Thank you very much for this level of awesome content.
Your video is amazing as always... It would be great if you can include how to choose the value for 'k' and evaluation metrics for kNN. Also, if I understand it right, there is no actual "training" happening in kNN. It is about arranging the points on the cartesian plane and when a new data point comes, it will again be placed on the same plane and depending on the value of "k", it will be classified. Correct me if I'm wrong.
Hi. Yes, you are right. KNN is easy to implement and understand and has been widely used in academia and industry for decades. You may utilise the cross-validation technique and the validation datasets to select the value for k.
Just wow thanks Josh. You are just great. One doubt however, if k values are large will outliers not affect my algo? Effect of outliers in knn? Please answer.
That is awsom how you explain this topics. One suggestion, you could show how the 7 nearest ist red, 3 nearest ist orange and 1 nearest is green for the point in the middle. By my eyes, the 1 nearest neigbour ist still red! and it makes me confuse what does nearest means actually :)
You are correct. I was a little sloppy with my terminology. What I meant was use something like PCA to reduce the dimensions so we can see that data in a 2-D graph. However, now that I'm older and wiser I know that we can skip the PCA step if we wanted to.
I love this guy's shtick. Corny, slightly annoying music, although I'm sure he is a great musician. Slightly condescending voice when he goes over the material... like "I'm making this so fucking easy for you... you can't possibly not understand this". It's actually quite calming. He speaks slowly too. You don't have to constantly pause his videos. I understand everyone of his videos. If I don't, it's because I didn't yet watch any prerequisite videos that he tells you at the beginning to watch. He never takes for granted that you understand some detail. This is the BIGGEST freakin' mistake of educators. Some damn variable in a formula that they forget to explain. Also, he will use the simplest example possible so that you understand. I am returning to school, grad school in the ML track for computer science. I don't remember much of the math that I took 20 years ago. This guy is a lifesaver. Wish I watched these when I started. I will be watching all of his videos. After I graduate and make some money, I'm sending him some bucks thru Patreon. Thanks man!
BAM! Thank you very much! I think I must have "resting condescending voice" - because several people have made the comment that I sound a little condescending - but trust me this is not intentional! :)
@@statquest It's actually reassuring. You know, when you are talking to someone who is freaking out? And you make it sound like "Dood, this not that hard."
