1. Introduction and Probability Review

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  • Опубліковано 27 жов 2024

КОМЕНТАРІ • 101

  • @huiwenhe4760
    @huiwenhe4760 2 роки тому +22

    Such a respectful professor. His lecture still makes so much sense even in Spring 2022, after 11 years. That's why we study a whole sequence of random variable that works for an arbitrary amount of time.

  • @harrypotter1155
    @harrypotter1155 4 роки тому +4

    Brushing up my basics again here. No wonder why MIT is the best university in the world. Really love the lectures!

    • @ryan_chew97
      @ryan_chew97 4 роки тому +1

      agree, I am basically realizing if I take a course in my uni that is a element of the set of courses MIT has, I'm doing the MIT course to learn it. Every prof seems to be absolutely class.

  • @jimmyshenmusic
    @jimmyshenmusic 8 років тому +48

    This lecture is amazing. I especially love the philosophy parts of this course.

    • @ReadWithTshepho
      @ReadWithTshepho Рік тому +1

      Same here. I'm here for philosophy not engineering.

  • @johnangelo2000
    @johnangelo2000 12 років тому +5

    He is the inventor of LDPC codes and many more ideas. I did my research on his LDPC codes for my thesis. Awesome brain.......High Regards...

  • @acatindisguise
    @acatindisguise 4 роки тому +13

    thank you so much for adding in subtitles! means a lot to people like me who have auditory processing issues but still want to learn :)

  • @sodiq_5
    @sodiq_5 10 місяців тому

    12 years and still fining it useful. May God bless you professor

  • @altolen
    @altolen 12 років тому +2

    He clearly states that probability and likelihood are synonyms in a colloquial sense, but likelihood has a very special meaning in the subject's context.

  • @elp05tlc
    @elp05tlc 8 років тому +4

    oh wow. This lecture is one of the best lectures on probabilities I've ever seen. It makes clear some of the reasons why I'm struggling with concept of probability until know. In high school, you're blindly taught these concepts and it never really made sense to me. This guy really does a good job of explaining probability models, from the idea of why you can combine two probability models to confusion caused by "distinguishability" ......

  • @elsurexiste
    @elsurexiste 6 років тому +8

    At 39:40 he warned about delving too deep in measure theory. He was right: I spent so much time with measure theory that in the end stochastic processes were just a footnote of the course.

    • @lucasdarianschwendlervieir3714
      @lucasdarianschwendlervieir3714 5 років тому +2

      Being much more on the applied side of mathematics, I agree. I've only spent a little bit of time in measure theory just to get the idea of the precise definitions and their relationship with probability theory. Now I'm taking a more applied approach to study stochastic processes since what I really need is to make probabilistic computations in real world models.

  • @joannaliu4977
    @joannaliu4977 4 роки тому +16

    Any moment now, this guy's going to stop mid-speech and offer you a glass of sweet tea.

    • @kelsocampbell1301
      @kelsocampbell1301 25 днів тому

      ha....seems like he's from the deep South somewhere... he must like Alabama football! Yea, Crimson Tide!!!

  • @anarionzuo1425
    @anarionzuo1425 3 роки тому +7

    This lecture is more philosophical than mathematical. Love it!!!

  • @amnassimi
    @amnassimi 11 років тому +1

    I am thankful to OCW for offering these lectures. Its just quite unfortunate that the quality of video is not good enough to read the slides easily.

  • @elenazevedo
    @elenazevedo 2 роки тому

    This awesome and respectful professor helped me to understand not only the subject but also why I have to study this. Thank you so much for your time and for sharing your knowledge with us. I've been struggling with this subject for a couple of weeks. Praise the Lord, I found you.

  • @ChernobylPizza
    @ChernobylPizza 12 років тому +2

    I'm glad he describes the philosophical territory before moving on to the math because for all my life my math teachers have failed to mention any of that.

    • @ReadWithTshepho
      @ReadWithTshepho Рік тому

      Math teachers are not philosophically trained.

  • @mr_vazovski
    @mr_vazovski 3 роки тому +1

    I'm falling in love with this professor by the minute! And I've only seen 12 minutes.

  • @WastelandWarfighter273
    @WastelandWarfighter273 9 місяців тому

    As a Terence Mckenna fan this lecture is pushing all my fun buttons! I kept wondering if he was going to say to achieve true 50/50 odds, the coin would have to land on its edge every time!

  • @xiaoweidu4667
    @xiaoweidu4667 3 роки тому

    He is truly a master. Randomness is compression of factors.

  • @pattyescobar
    @pattyescobar 12 років тому +2

    Good lecture. Im taking that class right now and i was feeling so confused, this Sir is clearing stuffs to me, thaks!

  • @RajivSambasivan
    @RajivSambasivan 10 місяців тому

    Very nice to hear wikipedia getting credbility for probability here. That is a good pointer

  • @user-or7ji5hv8y
    @user-or7ji5hv8y 6 років тому +1

    He's really good. Definitely at a much deep level and understanding.

  • @omiyodranawa9430
    @omiyodranawa9430 7 років тому +4

    I honestly run the video on x2 speed, and whenever I want to rehear something I can just go rewind in time
    it saves you a lot of time to go x2 speed, if it's too much x1.5 is okay

    • @martinjanas3324
      @martinjanas3324 5 років тому +1

      Okay man but nobody cares

    • @bietola75
      @bietola75 4 роки тому +1

      @@martinjanas3324 That was rude

  • @choatezhao9905
    @choatezhao9905 9 років тому +4

    This guy is really amazing! I really like this course and this prof!!!!

  • @emilyyoung6924
    @emilyyoung6924 6 років тому +1

    This is great. Brilliant lecturer, and I love his commentary

  • @massisenergy
    @massisenergy 6 годин тому +1

    What is the difference between *SAMPLE* and *EVENT* ?

    • @massisenergy
      @massisenergy 3 години тому

      Events are the subset of the sample space, as explained here: *SAMPLE SPACE* ua-cam.com/video/leVm6xuKdlU/v-deo.html and *EVENT* ua-cam.com/video/leVm6xuKdlU/v-deo.html

  • @ReadWithTshepho
    @ReadWithTshepho Рік тому

    The philosophical professor of engineering.

  • @tobiassugandi
    @tobiassugandi Рік тому

    Such an amazing human being..!

  • @ryanzheng9211
    @ryanzheng9211 2 роки тому +1

    Really like this professor. So great!

  • @SphereofTime
    @SphereofTime 2 місяці тому +1

    55:46 random variables’s expectation value

  • @gfsm
    @gfsm 3 роки тому

    Congratulations professor Gallagher

  • @朵朵花林-f3p
    @朵朵花林-f3p 5 років тому +1

    stochastic process is study an infinite sequence of random variable.

  • @carrierflash
    @carrierflash 3 роки тому

    Timeless treasure. Thank you.

  • @transmitterrelay11
    @transmitterrelay11 11 років тому

    I like this guy, he actually teaches

  • @lisachanderman9590
    @lisachanderman9590 9 років тому +4

    i love this lecture but PLEASE fix the way it is recorded! can barely see the screen and it is very frustrating. Rather focus on the slides and stop moving the camera around. Thank you to the lecturer though for doing a wonderful job.

    • @mitocw
      @mitocw  9 років тому +24

      +Lisa Chanderman This course has course notes that might be of some help. See the course on MIT OpenCourseWare for the materials: ocw.mit.edu/6-262S11

    • @PenfieldEspinosa
      @PenfieldEspinosa 7 років тому

      Dear +MIT OpenCourseWare, it is an amazing lecture, but unfortunately it's title is a misnomer.
      :-(

  • @didarkhan1
    @didarkhan1 11 років тому

    infact this topic has been pulled in detail,good informative keep it up mit

  • @soopercooper101
    @soopercooper101 12 років тому +3

    thank you for speaking understandable English.

  • @HelenaKaziaBatma
    @HelenaKaziaBatma 11 років тому +2

    thank you so much! a great lecture by a beautiful mind!

  • @deductionism
    @deductionism 12 років тому

    Sorry I think I missed that. I didn't watch the whole lecture. In 8:40 he mentions that "likelihood is a synonym for probability". I have however just realized that the word likelihood is used as a prescientific explicandum (and not as an explicatum).

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

    This is such a great lecture.

  • @bgpeters22
    @bgpeters22 8 років тому

    I think there is a mistake in the proof of the last slide. I believe it should have lim(sum of Pr{B_m}) = lim(Pr{A_k})...excuse me for the rough equations.

  • @kelsocampbell1301
    @kelsocampbell1301 25 днів тому

    ...seems like a nice gentleman...can't help but like him!

  • @orandom
    @orandom 11 років тому +1

    What a groovy lecture. Lots of fun!

  • @karlnord1429
    @karlnord1429 8 років тому +2

    Lovely lecture. Thank you!

  • @СергейПоклонский-х2ъ

    this is absolutely brilliant!

  • @fernandojackson7207
    @fernandojackson7207 10 місяців тому

    So, just what kind of "Awful things" happen when the union of events is not considered and event ( Around between 40:00 and 41:30)?

  • @ElectricityTaster
    @ElectricityTaster 9 років тому +36

    _Discrete Stochastic Processes, as you all know._
    fuck.

  • @seyfchappas1979
    @seyfchappas1979 9 років тому +1

    great job men from algeria

  • @puneethgb9789
    @puneethgb9789 Рік тому

    does this course teach all the fundamentals required for learning stochastic processes

  • @AMAZINGINDIA2020
    @AMAZINGINDIA2020 6 років тому

    Very good lecture,sir

  • @globalmacro2817
    @globalmacro2817 9 років тому +44

    He looks awfully like Warren Buffet for some reason ...

    • @xiao6322
      @xiao6322 8 років тому +6

      +GlobalMacro Yes. I think so too. He reminds me of my grandma also.

    • @veeecos
      @veeecos 8 років тому +3

      +xiao Lin you mean grandPA right ?

    • @allandogreat
      @allandogreat 4 роки тому +1

      He is....

    • @enisten
      @enisten 3 роки тому

      @@xiao6322 What pronoun does your grandma prefer?

  • @alperenbalc4475
    @alperenbalc4475 3 роки тому

    This is a great lesson. However the quality of the video is very low. Sometimes texts become unreadable.

    • @lkjadslkfjlaksj
      @lkjadslkfjlaksj 2 роки тому +1

      The slides are available as a pdf on the course website

  • @kangliu8744
    @kangliu8744 7 років тому +1

    Truly intelligent.

  • @jamespangelinan2310
    @jamespangelinan2310 4 роки тому +1

    Hi everyone, a question: what does he mean when he says, "I

  • @BuyGoldRegalAssets
    @BuyGoldRegalAssets 12 років тому

    Thanks. great lecturer.

  • @oakschris
    @oakschris 8 років тому

    "This function must satisfy the constraint that [w: X(w)

    • @haolinfeng8757
      @haolinfeng8757 7 років тому +2

      Chris Oaks not every subset of the sample space is an event, only the measurable ones are. it is related to measure theory, and most of the time it's safe to ignore the measurability part for elementary courses. For more rigorous courses you will hear that all the time.

  • @МиланДимитровски
    @МиланДимитровски 11 років тому

    it would be great to have subtitles with these amazing lectures! is it that possible? it would be very useful for me because of my bad english. it is much easier with subtitles. just transcript (without synchronization) would be enough for me! thank you anyway!

  • @mauriciojimenez7704
    @mauriciojimenez7704 4 роки тому +1

    totally necessary philosophy part

  • @cutesexybabe69
    @cutesexybabe69 12 років тому

    Which is what he said.

  • @arpithams
    @arpithams 11 років тому

    great lecture .. hats off prof :)

  • @sreekanthmuthu
    @sreekanthmuthu 11 років тому

    Subtitles have many mistakes. Please have a look at it.

  • @yifeipeng389
    @yifeipeng389 4 роки тому +1

    anyone know the prerequisite for this class since this is a graduate class ?

    • @mitocw
      @mitocw  4 роки тому +1

      The prerequisites listed in the syllabus, "Thorough understanding of elementary probability at the level of 6.041/6.341, which uses the following text:
      Bertsekas, Dimitri, and John Tsitsiklis. Introduction to Probability. 2nd ed. Athena Scientific, 2008. ISBN: 9781886529236.
      Some patience and affinity for careful mathematical reasoning." See the materials on MIT OpenCourseWare for more information at: ocw.mit.edu/6-262S11. Best wishes on your studies!

    • @yifeipeng389
      @yifeipeng389 4 роки тому +1

      @@mitocw thank you so much ! I love MIT class,It is always the best !

  • @Benpeterscode1337
    @Benpeterscode1337 11 років тому

    what book was he talking about when he said "Keller?" Is it the concepts i probabilty and stochastic modeling by sallie keller-mcnulty?

    • @roland2520
      @roland2520 10 років тому +3

      "Feller" , ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-262-discrete-stochastic-processes-spring-2011/course-notes/MIT6_262S11_back.pdf

    • @bilalmerni2321
      @bilalmerni2321 8 років тому

      www.google.com/search?q=killer+probability&ie=utf-8&oe=utf-8&client=firefox-b-ab#q=feller+probability

  • @Usahousesforsale
    @Usahousesforsale 11 років тому

    Wow... how cool... I didn't know they offered those. Very nice touch, even if they need improvement ;)

  • @llevine6510
    @llevine6510 7 років тому +1

    Why is it called stochastic calculus? It is stochastic process class right?

    • @DeltaDuo
      @DeltaDuo 7 років тому

      Discrete stochastic processes.
      ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-262-discrete-stochastic-processes-spring-2011/

  • @Liaomiao
    @Liaomiao 11 років тому

    is the probability systems analysis course also provided by mit a sufficient prerequisite for this course?

  • @abhimanyukarnawat7441
    @abhimanyukarnawat7441 7 років тому +1

    great man!

  • @deductionism
    @deductionism 12 років тому

    The likelihood is not a synonym for probability. It does not have a density with respect to a Lebesgue measure!

  • @curiousss4960
    @curiousss4960 9 років тому

    Wow, this class is so dead. How unfortunate.

  • @HungryHeart101
    @HungryHeart101 6 років тому +1

    Make me wish I took my MIT offer, but my wallet says otherwise

  • @fzycila7968
    @fzycila7968 9 років тому

    I really doubt the probability that there is one single person gonna finish the whole series. No offence. Great video though

    • @ChuckEarnest
      @ChuckEarnest 8 років тому +1

      I'm going to watch through it once now to get an idea of what I'm working toward with calc and algebra. I'm sure I won't understand some of it :)

  • @nsharkasi
    @nsharkasi 9 років тому

    Anybody read the lecture notes , on page 3, the probability of rolling a die is assigned to 6^-n , n can't be a negative number ..

    • @nitinb3758
      @nitinb3758 8 років тому +9

      +nsharkasi x^-y = 1/x^y

  • @qasax0913
    @qasax0913 11 років тому

    w00t!

  • @독자적인이름
    @독자적인이름 2 роки тому

    44:40 haha true

  • @connorfrankston5548
    @connorfrankston5548 9 місяців тому

    16:40

  • @enkii82
    @enkii82 12 років тому

    did he suggest Wikipedia? haha

    • @kabascoolr
      @kabascoolr 2 роки тому

      He is right though. He is also one of the leading experts in this entire field; and wrote some of the most renowned books in it, so he might be onto something.