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A recommendation system and MapReduce

This month we have Cathy O'Neil presenting "A recommendation system and MapReduce"

In this talk, we'll see how recommendation systems are created from data. What's the algorithm? What's the evaluation method? What's the optimization procedure? When does it converge? We'll talk about parallelizing in order to scale up to "big data" size via the MapReduce framework. Finally, we'll think about priors and how they are overloaded. Content from this talk draws from chapters in Doing Data Science contributed by David Crawshaw and Matt Gattis.

Cathy O’Neil, PhD, Senior Researcher at Johnson Research Labs

Cathy O’Neil earned a Ph.D. in math from Harvard, was postdoc at the MIT math department, and a professor at Barnard College where she published a number of research papers in arithmetic algebraic geometry. She is co-authoring a book (with Rachel Schutt) called “Doing Data Science” to be published by O’Reilly in Spring 2013. She previously worked as a quant for the hedge fund D.E. Shaw in the middle of the credit crisis, and then for RiskMetrics, a risk software company that assesses risk for the holdings of hedge funds and banks. She facilitates an Occupy Wall Street working group, called Alternative Banking, and writes a blog at mathbabe.org.

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  • Zhen G.

    Just watched the video (was turned away at the event), very interesting talk. It seems to me that the alterative least squares she described has the same idea of expectation maximization or collaborative filtering.

    April 22, 2013

  • Max K.

    The video from the talk is now up

    http://vimeo.com/64445499

    April 20, 2013

  • Max K.

    Slides from Cathy's talk
    http://prezi.com/nnag8lwt5gcs/start-your-own-netflix/
    Hope to have video up over the weekend.

    April 19, 2013

  • Drew A.

    Is there a video of the event available at this time?

    April 19, 2013

  • Vaidehi

    It was not very audible during the initial annoucement sections.. Could someone please list the set of open positions which were announced at the start of the hour ?

    April 19, 2013

  • William S.

    Watched the waiting list all day, finally made it to the attending list a few hours before. Got there 15 min late because of a long meeting at work and was turned away because the event was full. Guess I should've seen it coming considering how big the waiting list was. haha

    April 19, 2013

  • Martin A.

    Great speaker that seemed to stop suddenly just when she got to the meat of the talk. Perhaps we have to buy the book?

    1 · April 18, 2013

  • A former member
    A former member

    Bummer! Event full. Wish I was on time...

    April 18, 2013

  • Georg K.

    I'm sorry!

    1 · April 18, 2013

  • Kai Y.

    Sorry for the late cancel. I am stuck on a marathon client meeting. I hope someone else can go.

    April 18, 2013

  • d

    Can not attend

    April 18, 2013

  • niyant

    Freeing up my spot so someone else can go.

    April 18, 2013

  • A former member
    A former member

    Time conflict at the last minute

    April 18, 2013

  • Spinhop

    Hoping this doesn't take me off the distribution for the video link when it becomes available.

    April 18, 2013

  • Geert D.

    Congrats, tonight's meetup is one of NYC most popular events today!

    April 18, 2013

  • deniz

    Map and Reduce!

    April 18, 2013

  • Mehul S.

    Given the rigors of the commute from NJ will settle for the video. Looking forward to it.

    April 17, 2013

  • Igor B.

    any chance someone could record this? I'm on the waiting list with no hope making it on the rsvp list.

    2 · April 17, 2013

    • Max K.

      Yes Igor, planning on it. Video should be up over the weekend bog willing

      April 17, 2013

    • Igor B.

      Thanks!

      April 17, 2013

  • William S.

    Please make room for us less fortunate by un-rsvp-ing if you can't make it. kThanks :)

    April 17, 2013

  • Sean T.

    Have to go to a good friend's birthday party instead :'(

    April 17, 2013

  • Drew W.

    last minute trip out of town -- bummed I can't make it!

    April 15, 2013

  • vadi h.

    Please add me to the list.

    April 13, 2013

  • Sean T.

    Any particular maths I should study up on beforehand? PS I'm also a big fan of Cathy, though I'm only familiar with her work in the Alternative Banking group.

    April 10, 2013

  • Geoffrey S. N.

    you add in GutReduce and I'll be preaching your gospel till the end of time... ok, at least till they finally write a good compiler for Itanic chip...

    April 9, 2013

  • Geoff G

    yay

    April 8, 2013

  • Roshan K.

    Well the previous Talk abt " Does News Move Prices" was very good . So yes attending surely . :)

    April 8, 2013

  • A former member
    A former member

    Data Scientist. User Experience ninja. Analytics, Mining, Machine Learning, Lean Startup.

    April 8, 2013

  • Sampath C.

    Yes, count me in.

    April 8, 2013

  • Parag P.

    awesome meet on mapreduce

    April 8, 2013

  • deniz

    Map and Reduce!

    April 8, 2013

  • Alexander C.

    nerdin' some mech-learnin'

    April 8, 2013

  • Bill M.

    Hi

    April 8, 2013

  • Zhe S.

    Exactly what I want to learn recently, I am so lucky.

    April 8, 2013

  • drew b.

    No one will come to this meetup, provided no one = everyone. :) Great topic and really looking forward to it!

    April 8, 2013

  • Paul C.

    Looking forwarding to it!

    April 8, 2013

  • Cameron S.

    could be interesting...

    April 8, 2013

  • Saurabh B.

    Huge fan of Cathy. Also I am have created a few Industrial recommendation systems. So really looking forward to this talk

    1 · April 8, 2013

  • Deephan M.

    Machine learning enthusiast.

    April 8, 2013

  • Adam K.

    Been following Cathy's blog for a while - very excited for this talk!

    1 · April 8, 2013

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