Recommender Systems

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  • Опубліковано 16 чер 2024
  • This is CS50

КОМЕНТАРІ • 107

  • @daniel10263
    @daniel10263 8 років тому +9

    A very fascinating lesson in how the recommendation system of Netflix, Facebook works, etc. Thank you so much CS50 staff!

  • @harlongbitimung4108
    @harlongbitimung4108 5 років тому +3

    Great video. I appreciate how you have explained the concept in a much comprehensible way.

  • @alaaalqhtani6131
    @alaaalqhtani6131 7 років тому +5

    Thank youuuu soon much!
    Such simple and detailed explanation, you can't imagine how much this helped me!
    It gives me the idea of 'recommendation' and their matrices
    Thanks again ..

  • @tharangasaitm
    @tharangasaitm 7 років тому +14

    Thanks for the simple explanation.

  • @ArenMarkB
    @ArenMarkB 6 років тому +8

    Amazing lecture. Thank you.

  • @nsambataufeeq1748
    @nsambataufeeq1748 Рік тому +1

    When i audited this course 7 years ago, i had no idea i will do ML for a living.

  • @johng5295
    @johng5295 3 роки тому

    Thanks in a million. Awesome. Where have you been all these years.

  • @sanskrutidarpan9107
    @sanskrutidarpan9107 5 років тому +2

    Thank You.Explaination is so simple so anybody can easily understand.

  • @kristhianortiz151
    @kristhianortiz151 Місяць тому +1

    this was 8 years ago, amazing

  • @Tori_V_
    @Tori_V_ 5 років тому

    Great video! Very explanatory and easy to understand!

  • @marshalldteach1109
    @marshalldteach1109 7 років тому +97

    I thought your Linuz Torvalds, but thanks, great explanation!

    • @wow404notfound4
      @wow404notfound4 6 років тому +2

      same, haha, I came across thinking it was Linus talking

    • @rahul_bali
      @rahul_bali 6 років тому +1

      You are!?

    • @sasikanth1329
      @sasikanth1329 5 років тому

      Ya exactly..... 😀

    • @etienneekpo348
      @etienneekpo348 5 років тому

      quite true ... thought it was him!!

    • @ogskun
      @ogskun 5 років тому

      maybe he's a fan..or he's an impersonator of Linus hehehe

  • @mehdijb752
    @mehdijb752 6 років тому

    thanks for your great and simple explanations

  • @MrHiwa1988
    @MrHiwa1988 6 років тому

    thanks for you, and for using simple example for understanding this topic

  • @maryammehboob8285
    @maryammehboob8285 4 роки тому

    Thanks for simple and brief explanation.

  • @madhur089
    @madhur089 6 років тому

    good job...thanks for explaining in simple way :)

  • @georgekokonya8892
    @georgekokonya8892 4 роки тому

    Thank you. It's very simple and easy to understand

  • @rickyharewood
    @rickyharewood 7 років тому

    Brilliant explanation!

  • @annisas.a3580
    @annisas.a3580 4 роки тому

    omg I just saw this video on 2020
    thanks, very clear explanation!

  • @lukmanoyee3731
    @lukmanoyee3731 5 років тому +4

    WHAT A SIMPLE AND PRECISE EXPLANATION....... thank YOU SIR

    • @YEESJAY
      @YEESJAY 3 роки тому

      ITS SOOOOOOOOOOOOOOOO HARD

  • @prashantchavan789
    @prashantchavan789 8 років тому +1

    very excellent talk.

  • @luanzambinatimanara2529
    @luanzambinatimanara2529 5 років тому

    Great video! Congrats

  • @waseemanwar3327
    @waseemanwar3327 4 роки тому +1

    A fantastic way of explaining the content. I understood the underlying concept. Thank You so much.

    • @YEESJAY
      @YEESJAY 3 роки тому

      Your not welcome :(

  • @s.e.7268
    @s.e.7268 3 роки тому +1

    omg, it is an amazing lecture!

  • @user-or7ji5hv8y
    @user-or7ji5hv8y 3 роки тому

    Great presentation.

  • @sanyakapur6536
    @sanyakapur6536 5 років тому

    Great explanation!

  • @jm7124
    @jm7124 7 років тому

    Thanks for sharing this video.

  • @nitroflap
    @nitroflap 3 роки тому +1

    Linus Torvalds explaining us recommendation systems... interesting

  • @G47_Code
    @G47_Code 2 роки тому

    진짜 굉장한 강의들이다 정말 하버드 진짜 만세다 ㅠㅠ

  • @hanggianggono3765
    @hanggianggono3765 8 років тому

    nicely done, i will implement content based since it is more reasonable in early

  • @stelakoul
    @stelakoul 8 років тому +2

    Scaz for president!!!

  • @adrianfathursetyawan9247
    @adrianfathursetyawan9247 3 роки тому

    thanks for your explanation about the remcomendation 's system sir

  • @xhole
    @xhole 7 років тому

    it seems like an efficient tag system is more important than recommender algorithm

  • @iftekharjoy7118
    @iftekharjoy7118 5 років тому

    Just awesome!

  • @manujas1777
    @manujas1777 5 років тому

    Thanks sir good work👍

  • @skandarbenali3695
    @skandarbenali3695 5 років тому

    clear explanation. thank's

  • @YuzuruA
    @YuzuruA 4 роки тому

    Unfortunately Netflix seem to have throw all that work away

  • @Lamoboos223
    @Lamoboos223 6 років тому

    thanks, you helped me in my GP

  • @1tridibdey
    @1tridibdey 4 роки тому

    Can I use the matrix factorization technique for recommendation where the scenario is like I have 972 unique user and 3810 unique items and 24 unique country id. Like in a common movie recommendation ratings are there and we predict ratings and then show recommendation system. In my case I have country id instead of ratings. is it fundamentally incorrect or I can go ahead with this?

  • @oussamaoussama6364
    @oussamaoussama6364 7 років тому

    Excellent explanation! Shukran.

    • @YEESJAY
      @YEESJAY 3 роки тому

      EYVALLAH BEY

  • @user-lv7kw1yj6j
    @user-lv7kw1yj6j 5 років тому

    Thanks for your lectures. Is it code Python?

  • @safwankhan199
    @safwankhan199 4 роки тому

    THIS man is an og explainer lol

  • @rkgrap
    @rkgrap 4 роки тому

    Great explanation sir

  • @shyland20
    @shyland20 6 років тому

    i wold like to know what is the filed for "software engineer" to study in order to control this filed and specializes in this field ? thanks (i'm looking to hire someone at my location)

  • @agilasadi5044
    @agilasadi5044 5 років тому +1

    Great examples, but I really wonder. Doesn't this kind of peration take too long to run? I mean running this kind of algorithm would probably take 30ms, but considering you might have thousends of users trying to run the algorithm simultaneously, it might be a pain in the ass. Aren't there better ways to deal with it?

  • @sachithadilshan9191
    @sachithadilshan9191 4 роки тому

    Thanks
    Really helpful

  • @vovantanat9615
    @vovantanat9615 3 роки тому +1

    Yo after those years this lecture is so good 😱😱

  • @deepgsingh
    @deepgsingh 5 років тому

    very nice explanation

  • @oskrm
    @oskrm 8 років тому

    nice videos

  • @MaoRuiqi
    @MaoRuiqi Рік тому

    Thank the Math Gods that sent you to me!

  • @rumbl3d
    @rumbl3d Рік тому

    For a moment I thought he was Linus Torvalds

  • @piotr780
    @piotr780 5 років тому

    Where is the rest of this course ? I dont see the playlist

  • @G47_Code
    @G47_Code 2 роки тому +1

    amazing lesson. thank you professor

  • @harshalipatil8425
    @harshalipatil8425 6 років тому

    Thank you sir.

  • @chinmayjoshi9114
    @chinmayjoshi9114 8 років тому

    How do you determine the value of k in SVD? Is stochastic gradient descent used for that or is it a completely different method?

  • @palermodpr
    @palermodpr 6 років тому

    Thank you a lot!

  • @user-go2yu4hq5p
    @user-go2yu4hq5p 4 роки тому

    thanks a million for you

  • @muwaffaqimam3790
    @muwaffaqimam3790 5 років тому

    Thank you .

  • @ShreyaBhandare
    @ShreyaBhandare 7 років тому

    amazing, thanks

  • @gaurangsolanki2542
    @gaurangsolanki2542 4 роки тому

    you look like young Sheldon's father

  • @jamesrusso4220
    @jamesrusso4220 8 років тому +5

    lol the CC spells boolean as "bullion"

  • @nguyenhuyphat6020
    @nguyenhuyphat6020 6 років тому +1

    Hi sir, can you please give me a lecture on Building Recommendation System ?

  • @asutoshmittapalli
    @asutoshmittapalli 3 роки тому +2

    Didn't know Linus Torvalds taught CS50

    • @YEESJAY
      @YEESJAY 3 роки тому

      IF YOU DIDNT KNOW THAT THEN YOU CANT BE IN CS50 I AM IN THEIR UNIVERSITY FREE SCHOLORSHIP

  • @naatworld.
    @naatworld. 6 років тому

    Thanks Sir

  • @ehsanamidi4619
    @ehsanamidi4619 7 років тому

    thanks,for video

  • @CodeXBro
    @CodeXBro 5 років тому

    Thank you

  • @SayantanTalukder
    @SayantanTalukder 8 років тому

    Well what about the Google search engine? What kind of recommender system do they use? How do they decide the precedence of the search results for an user? Do they use content based filtering based on the search keywords, or does they use a hybrid recommender system where they first collect sites from the internet based on the search terms and then use collaborative filtering based upon all the users who have searched using the specific terms and then predict which link the user is most likely to click on based on what others have clicked on?

    • @lechat5717
      @lechat5717 7 років тому

      This is an another topic, called Information Retrieval

    • @dushyantsharma4912
      @dushyantsharma4912 3 роки тому

      Google uses Page Rank algorithm for listing the search results and I think that they use hybrid system for recommending similar searches.

  • @safrizal513
    @safrizal513 2 роки тому

    thank you

  • @tubex1300
    @tubex1300 6 років тому

    Hi Sir
    Will you provide the sample code of the video about?
    Thanks

  • @hiwotgirma6234
    @hiwotgirma6234 3 роки тому

    thank u so much

  • @KevinEontrainer381
    @KevinEontrainer381 5 років тому +1

    > Want to learn about recommender system
    > Sees Bechdel Test
    > Pauses Video
    > Search "Why is Bechdel Test even necessary?" For 30 minutes

  • @rikhsan
    @rikhsan 6 років тому

    it helps. thanks

  • @KayathriDevprasad
    @KayathriDevprasad 5 років тому

    is it possible to apply recommender systems to Intrusion Detection Algorithms?

    • @YEESJAY
      @YEESJAY 3 роки тому

      no its not possible

    • @yashsvidixit7169
      @yashsvidixit7169 3 роки тому

      anything is possible if you are brave enough.

  • @ErikPontifexAudio
    @ErikPontifexAudio 8 років тому

    There must be a better way to do this...I don't identify with most of what the "big sites" recommend me. UA-cam, for example, keeps recommending me chess related videos when I've never watched anything remotely chess related as far as I know. I guess this must mean that my tastes are somehow adjacent to the subject of chess, but it sounds like the system would yield better results overall if it could somehow realize that I am not responding to that particular subject.

    • @wnwillyndirangu
      @wnwillyndirangu 8 років тому +1

      +Erik Pontifex your concern is genuine but another aspect of machine learning (which is basically a field of AI) is to try and predict things you might like just like netflix . one way of doing this is grouping people (clustering ) with similar tastes together . This might be what youtube does and it just might happen that the cluster you are in consists of people who like chess thus the recommendations.

    • @abhishekkhanchi9105
      @abhishekkhanchi9105 6 років тому

      Nice

  • @lochanathambeliyagoda5065
    @lochanathambeliyagoda5065 4 роки тому +1

    Lol i saw this on my reccomandation

  • @rabnawazbhanbhrobhanbhro8509
    @rabnawazbhanbhrobhanbhro8509 7 років тому +1

    what is the cross domain recommendations please explain it

  • @hamlinhamlinmcgill630
    @hamlinhamlinmcgill630 8 років тому +2

    Next week i have my exam based on recommender systems, hope i will pass...

  • @mahmudhossainshanto7227
    @mahmudhossainshanto7227 7 років тому

    :D

  • @jackvu.hustle
    @jackvu.hustle 3 роки тому

    Jack Vu is here.

  • @YEESJAY
    @YEESJAY 3 роки тому

    i came from clevered.com pre class video

    • @YEESJAY
      @YEESJAY 3 роки тому

      Really nice i also came

    • @YEESJAY
      @YEESJAY 3 роки тому

      @zeyrox you gotta be kidding me nah?

    • @YEESJAY
      @YEESJAY 3 роки тому

      no i am not lol

    • @YEESJAY
      @YEESJAY 3 роки тому

      ohhh ok KOKO MO MUJEH BI DO

    • @YEESJAY
      @YEESJAY 3 роки тому

      SAME BOI