PCA problem / How to compute principal components / KTU Machine learning

[@fauzaan_shareef]

The explanation is so elegant and clear that I need not even know the language to understand the concept. Thank you madam.

[@eduflairktucs7636]

Glad to hear that

[@ytg6663]

Ok 😎

[@muhammedshafikp9964]

@@rjuez00 It's not hindi. It's Malayalam. Her prime focus is to educate students under KTU, which is a university in kerala.

[@rjuez00]

@@muhammedshafikp9964 well then put the title in Malayalam not in English

[@AnilYadav-qn3ch]

Good explanation but try to speak more in English I don't understand your mother tongue language.

[@mohammadrahman2356]

People use software mostly either R, minitab or python. She took the time to explain step by step by hand calculations to show clearly how PCA process works. Appreciated.

[@eduflairktucs7636]

Thank you so much

[@aadiatportsmouth]

For the beginners, it is important to know where it is coming from? Otherwise they think it is a kind of magic by software.

[@oscareduardofloreshernande7853]

Exactly! This is just what I was looking for. I didn't find anything other than her, that explained what happened in step 5. That was my missing piece.

[@afikamaliwa2888]

I won't lie. I didn't understand until I watched this video. Clearly explained. Thank you

[@aldionlee5702]

This was an awesome explanation. Now I truly understand what the PCA algorithm is really doing, and I feel much more confident in using it. Thank you!

[@ms-ej4gd]

very rare to see this type of written step-by-step explanation instead of using Software tools. great job

[@YASIR-uo1oo]

Man what a teacher!what a video didn’t knew the language but went straight into my head!exceptional!

[@jesusvl305]

at first i did not want to watch the video because for me it is hard to understand your language, but after reading through the comments i watched the whole video and now i got it. thanks for the great video.

[@elp09bm1]

This Lecture took me back to 1994, when I joined college of Engineering, Trivandrum. Being a native of Kashmir, I was hearing Malyalam first time in my life and when I started attending the classes of S1S2. The teachers were mixing the Malyalam with the English at a speed I was thinking the terminology is new to me from Physics. Likewise, today Mam was explaining the PCA, I think by far the best mathematical explanation but today I do could manage to understand the Malyalam as well. I knew the explanation of PCA but to actual do it with such beautiful example could be a treat to students. I did subscribe the channel and hit the bell icon.

[@swatisharma4787]

Hello do you know how to apply PCA in spss?

[@mohit5496]

I like how a 240p video with language barrier have best explanation for the topic. Thank you.

[@nancyhada4480]

A good of example of language is never a barrier to learning. Kudos ma’am. Can’t thank you enough.

[@usernamewhatsoever4557]

thats very well put

[@newbie8051]

Thankyou for not skipping any steps, made me confident working with matrices 🙏👍

[@eduflairktucs7636]

Great to hear!

[@utkarshmangal6559]

You are a Queen mam. I bow down to say thank you, you have saved me from my exam.

[@anon8857]

Thank you for this ! Explaining with an hand-done example is way more understandable than any theory video!

[@davidcurren2587]

Thank you so much! I've been stuck on a question like this for a while now and none of the other videos explained it very well.

[@rizkigencarprakarsa6567]

OMG, thank you so much,,,,PCA is tool for my final exam at graduate...

[@aaronpaulhughes]

Yeah this was an amazing example, great job. I'm certain you were switching languages back and forth throughout the video, but I could still follow it. Fantastic work!

[@sakshamchauhan7980]

Best way!!! I learnt theory, but simply it wasnt enough… she just explained it so clealry!!

[@imdadood5705]

Camera quality is bad Shaky footages Yet, this person was able to nail the concept! This is goldd!! The best PCA explanation I have seen so far! Amazinggg!

[@eduflairktucs7636]

Glad you liked it!

[@ruchikalalit1304]

Excellent explanation and so clear that even after not knowing the language I understood the concept. Thanks a lot

[@munnabhaimbbs9716]

awesome practical... this time i am able to understand all concept of PCA

[@yamansaini6379]

Really wonderful explanation Its clear all steps & mathematical doubts. Best explanation video on PCA

[@AdityaKumarAshish]

Even though i didn't understood the whole concept but I appreciate your hardwork Thank you

[@_sparshika]

Even i dont the language but your explanation made it more easy! mam.. like literally you expalined each and every step! thats so much to appreciated .. i just paused the video appreciate you .. like seriously thank you so much mam !

[@nayanadasari803]

I don't know tamil but I understood this problem very well... Thank you so much...

[@aravinds6305]

thanks for the video. Very useful. Keep adding new videos related to machine learning.

[@shaikayub8922]

Wow... explained very sleekly and easily , seriously flattered with the way you have given explanation on PCA with Math . Much thanks for letting us know the math behind the PCA.

[@sureshraj6186]

Really this is very excellent explaination ever I seen.thank you madam

[@dharmeshshrivastava6714]

Madam Thanks a lot. Keep doing what you are doing and in the way you are doing. Teaching with proper notes is highly significant for Academic Students.

[@eduflairktucs7636]

Thank you, I will

[@comunidad_r_udec]

Nice video and excellent explanation! (¡Muchas gracias por el ejemplo!) It is a good exercise to teach in a class in conjunction with the video. Here is a R code in Spanglish that checks the result obtained in the video. # Step 1: Create the data xx

[@matchamochi603]

I'm in college and this was more useful than class...thank you

[@vivalavida__]

lucky to have this video in free of cost.

[@o1techacademy]

I understand your lesson even without understanding the language. Thank you madam

[@Sachin-wf4gg]

Very clear explanation... Thanks mam... and thanks for sharing notes too...

[@kuldeep7641]

Ma'am I can't understand Tamil language but evey step is clearly understood Thankyou

[@shyamsampath818]

i don't know malayalam but became a huge fan of ur explanation thankq sweet voice

[@manishkumaryadav4303]

A very good explanation... I don't know the language she is using but I got the concept. Thanks

[@hafizsyedzainalishah4575]

great work mam. i am now become your big fan. respect from Pakistan.

[@chanchalsaha5630]

This tutorial helps me a lot . Thank you so much didi and take my pronam.

[@eduflairktucs7636]

Most welcome 😊

[@debtanudas2084]

This is so nice an explanation Madam! Thank you

[@jeremyccc]

I didn't understand all the language you spoke - but your drawings and steps were excellent. Maths is universal

[@eduflairktucs7636]

Thank you so much 😀

[@rameshbhaiprajapati8241]

Thanks to solve numerical example of PCA

[@eduflairktucs7636]

welcome

[@leebalaila4760]

Kidilam explanation. Onnum parayanilla... I hope to meet you one day. Thanks again for the wonderful & informative video.

[@vgreddysaragada]

very well explained..very good initiative..Thank you so much..

[@harish00784]

Mind-blowing explanation of math behind PCA. Thanks a lot. Subscribed 👍🏼

[@lvilligosalvs2708]

This is Gold. Thank you for the explanation.

[@shamlabeevia9436]

nice presentation,,, and very useful class ...but small mistake happened...roots of a quadratic equation..... x = [-b +/- sqrt(-b^2 - 4ac)]/2a.

[@eduflairktucs7636]

Yes.. You are right👍.. A mistake happened there (12:33) in the equation for finding the roots of quadratic equation.. I apologize... Thanks for comment.

[@aravindg6129]

Enna mone

[@sureshkumarshanmugam4749]

By far, the best worked out example in youtube. Thanks a lot!!! Have seen in few other tutorials to subtract the x and y mean in the original dataset to avoid later subtraction from mean. What is your view on this mean subtraction in the original dataset?

[@carolharris2401]

Thank you so much for this. My professor said the statistical program will do it for you. You don't need to know how to do this stuff. But sometimes it makes easier to understand knowing the math behind it

[@adrenochromeaddict4232]

If that's real your professor is a massive moron I'll tell you that

[@Vishnuram-007]

Thank you so much mam ! it saves my exam preparation

[@mosaddikhossain9659]

What a nice explanation. Thank you for effort.

[@lakshmips2603]

വളരെ നല്ല ക്ലാസ്സ്‌ ആണ് 👍👍

[@preethiagarwal5355]

Fantastic job. Am a tamilian but I can still understand in a crystal clear manner ..... Thanks for your contribution sister 👏👏👏👏..searched 3-4 days in the net this is actually the one stop of pca.

[@Tt-ds5cu]

Perfect explanation . Thank you

[@subramaniankaushik]

nice video, please continue your good work!!

[@eduflairktucs7636]

Thanks, will do!

[@2Deadly_]

thank you maam for clear explanation with simple terms

[@KISHOREKUMAR-tn4lh]

thank you very much.. madam.. if possible please use full English madam... numerical its ok.. but for concept English better i think ... its my feeling only... but its a grate work madam... because of u .. i did my work madam..

[@harshithadeemena8728]

I'm from Andhrapradesh But i understand this prblm very well ❤‍🩹 Thank you mam

[@jayanthanjayaseelan1631]

Best tutorial for PCA and very knowledgeable tutor.. My sincere THANKS to you.The formulae shown 12:38 for finding the roots missed -b +/- but the answere is correct. the graphing part is unique. not seen in any other tutorials.Is it Possible to take us a calss on how to derive the orignial data from reduced data?

[@jayanthanjayaseelan1631]

Mam, I have one doubt. We need to select the higher Eigen value as the PC1. Does it mean that we need to check the value only...not the sign. Example: if we have 2 Eigen values 9 and -10. Which is the PC1? by magnitude 10 is the higher value.. By value 9 is the higher value.which one will become the PC1. please reply.

[@gy7uj917]

@@jayanthanjayaseelan1631 for posterity, singular values are always non-negative.

[@anjalipc8649]

Thank you very much ma'am. It helped me to get the idea clearly.

[@sreevidyasankarasubramania733]

Thank you, for such a clear explanation.

[@eduflairktucs7636]

Glad you liked it

[@m.ssenthil8273]

Well-done clearly explained, I am satisfied.

[@taeyangkim13]

This was what I needed. You are brilliantttttt!!

[@tamil2339]

voice is very clear and easy to understand

[@ganeshkumaar2437]

Thank you, mam. The same question was asked in my exam. Cake walk.🤩

[@शिका-झ3ग]

Perfect explanation... Hats off to you... And thank you so much

[@evdivakarasastry]

excellent explanation. i never saw a more illustrative video on PCA analysis

[@tajmohammadghulamzada5290]

Great Job - Ma'am. You are a life-saver. Next a little more english would be nice for more international students (like me from Germany). Million Thanks !

[@ilakkiyailak2879]

thank you so much for the clear explanation

[@neelsebastian4072]

Chechi.... super aayitt explain cheythu😍

[@montasirmansour1977]

Many thanks , one of the best tutorials

[@Lokeshwar2585]

Thank you so much mam...this was really helpful 🌟

[@Harisreethelearninghut]

What a legend only one ad in the beginning . Your so damn underrated

[@ayushvarma9657]

Loved the explanation, due to the language barrier, some parts were not understandable but the rest was crisp and clear. Thank you so much for your dedication.

[@nazariishcherbak8149]

Your video helped me really well. Thank you so much!

[@Skulltroxx]

never knew my native language would help me study a university level language :3

[@rohitpurkait1969]

You need to come to my college to teach statistics.....so nice explanation....

[@Sinister_Rewind]

Awesome explanation 🤩🤩, I don't understand the language but due to the example it was very clear what you're trying to convery thanks aloottt 😀

[@Jason-sk9xx]

explanation is very X 1,00000000000000000 good~!, Thank you for your teaching

[@BlueSkyGoldSun]

Very professional. Is there anyway you can explain the details in English?. you Are the only KZbinr who explains Ml in professional way.

[@sparkartsdistinctions1257]

I didn’t understood any words but still got the calculations.

[@freduaagyeman2805]

Awesome video, God bless you 🙏🙏🙏

[@brandonwarfield5611]

I wish you were my data mining teacher!

[@Ravikumar-pj4lc]

Wonderful explanation. Thank you

[@biswajitkumardas5207]

Thanks.Plz.solve a factor analysis problem.

[@GKPR5579]

The explanation is too good to understand. neatly explained. when i worked out the same problem, i have got cov(x,y) is -8.25 but you said -11. I have used 1/N ( summation of (x,y))- mean(x) * mean(y). In this clip, you have used N-1, If i use N, it gives -8.25. can you explain which is correct formula? when to use N and when to use N-1?. Thanks

[@abubakarali6399]

your mother tongue is very sweet not understand single word but really help.

[@deepakgaur81]

Very good explanation. Keep it up.

[@ojastelwane1790]

Great Explanation Ma'am, Thank you

[@selinakhoirom4023]

very nicely explained Thamk you

[@Webo-HUB]

really nice video...thank you a lot!!!

[@eduflairktucs7636]

Glad you liked it!

[@mangalesh05]

Thank u so much . nice explanation

[@balki96]

Best and easy to understand PCA

[@TheGamer-sz9uk]

Outstanding explanation ... Keep it up

[@tanmay5855]

so beautiful so elegant just looking like a wow

[@prasanthraja218]

Awesome Explanation- Thanks Mam

[@bshivadas]

Very nice explanation mam....good

[@eduflairktucs7636]

Thanks a lot

[@rockingrama7128]

Crystal clear....👌👌👏👏👏

[@lijutrajan]

Good explanation👌

[@eduflairktucs7636]

Thank you 🙂

[@indumathyd6185]

Very good explanation Madam, Thank you very much. I have a doubt. Please clarify. You have taken only dataset as an example. If it is a 2 class problem, how do you calculate P11, P12 etc? Kindly clarify. Thank you

[@shaelanderchauhan1963]

Thankyou great Lecture but could not understand the Kannad Part Please make videos in English Only.