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18 Dec 09

Decisions 2.0: The Power of Collective Intelligence - The Magazine - MIT Sloan Management Review

  • the hypercompetitive and fast-paced world of business today requires short response times and more accurate responses and more exploration of potential opportunities
  • we can gain a more accurate and intimate understanding of our environment.
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MIT Center for Collective Intelligence

  • With new communication technologies-especially the
    Internet-huge numbers of people all over the planet can now work
    together in ways that were never before possible in the history of
    humanity. It is thus more important than ever for us to understand
    collective intelligence at a deep level so we can create and take
    advantage of these new possibilities.

Q&A: Microsoft’s Unified Communications Strategy and Solutions: Jeff Raikes, president of the Microsoft Business Division, discusses new unified communications offerings coming in the 2007 Microsoft Office system, and the company's approach to the emergin

  • We are taking a software-focused approach to bring together disparate communications technologies into a unified experience – driving down the cost and complexity of communicating and collaborating at work

The Unified Communications Revolution

  • In the coming years, unified communications technologies will eliminate the barriers between the communications modes—email, voice, Web conferencing and more—that we use every day. They will enable us to close the gap between the devices we use to contact people when we need information and the applications and business processes where we use that information. The impact on productivity, creativity and collaboration will be profound.
  • According to a recent study, there’s a 70 percent chance that when you call someone at work, you will get voicemail. Another study found that one in four information workers spend the equivalent of three full working days each year trying unsuccessfully to connect with other people by phone. When you do reach the person you’ve called, there’s no guarantee that it’s a convenient time for them to answer your question, or that they have access to the information you need.
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10 Dec 09

Northwestern MBA / Kellogg School of Management / Kellogg MBA


  • Assume you are evaluating your application from the perspective of a student member of the Kellogg Admissions Committee. Why would your peers select you to become a member of the Kellogg community?



  • 4.

    Complete one of the following three questions or statements

    (400-word limit):


     














    A.

    Describe a time when you had to make an unpopular decision.


     


    B.

    People may be surprised to learn that I...


     


    C.

    I wish the admissions committee had asked me...

04 Dec 09

Research Projects - Center for Information Systems Research (CISR)

  • frameworks defining four stages of architecture maturity: business
    silos, standardized technology, process optimization, and business modularity. Firms derive value from each stage by acquiring important learning about how to manage and benefit from IT
  • rameworks defining four stages of architecture maturity: business
    silos, standardized technology, process optimization, and business modularity. Firms derive value from each stage by acquiring important learning about how to manage and benefit from IT.
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03 Dec 09

Adam Markus: Graduate Admissions Guru: MIT Sloan MBA Essays for Fall 2010 Admission

  • Unlike HBS, MIT specifically requires that you write a 500-word essay in the form of a cover letter that will convince them why you belong at MIT Sloan. Focus on your passions, values, and interests to show why you belong at Sloan. If you can answer the following questions in a convincing manner you will be on the right track:
  • My suggestion is to use that story as way of expressing something very important about you in terms of your values and fit for MIT Sloan. I would not suggest making this example, the principle topic of the cover letter, it is just one topic. The words "include an example" clearly indicate that this is just topic that you should address in your cover letter.
23 Nov 09

Adam Markus: Graduate Admissions Guru: Columbia Business School September Term 2010 Essays

  • Also keep in mind that CBS recently changed its core curriculum.
  • The resources available at CBS and Columbia University are vast, so figure out specifically what you want from the school. The program is flexible, so identify your needs from Columbia as specifically as possible. Also keep in mind that CBS recently changed its core curriculum. After all, you want to show them you love and need them For learning about what is hot at Columbia, I suggest taking a look at their blog: Public Offering. Also look at Hermes which provides news on the Columbia community. You may also want to write about taking a Master Class, so see the next question. Japanese applicants should most certainly visit http://columbiamba.jimdo.com/index.php.
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28 Dec 07

1.4 An Extended Example: Tic-Tac-Toe

  • Second, there is a clear goal, and correct
    behavior requires planning or foresight that takes into account
    delayed effects of one's choices
  • How might we construct a
    player that will find the imperfections in its opponent's play and learn to
    maximize its chances of winning
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1.5 Summary

  • The concepts of value and value functions are the key
    features of the reinforcement learning methods that we
    consider in this book.

1.6 History of Reinforcement Learning

  • The class of methods for solving optimal control problems by solving
    this equation came to be known as dynamic programming (Bellman,
    1957a)
  • temporal-difference
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1.7 Bibliographical Remarks

  • The example of Phil's breakfast in this chapter was
    inspired by Agre (1988). We direct the reader to Chapter
    6 for references to the kind of temporal-difference method we used in the
    tic-tac-toe example.

2.1 An <img border=0 src="inimgtmp82.png" width="9" height="8">-Armed Bandit Problem

  • If you maintain estimates of the action values, then at any time there is at least
    one action whose estimated value is greatest. We call this a greedy
    action. If you select a greedy action, we say that you are exploiting
    your current knowledge of the values of the actions. If instead you select one
    of the nongreedy actions, then we say you are exploring because this
    enables you to improve your estimate of the nongreedy action's value.
    Exploitation is the right thing to do to maximize the expected reward on the one
    play, but exploration may produce the greater total reward in the long run. For
    example, suppose the greedy action's value is known with certainty, while several
    other actions are estimated to be nearly as good but with substantial
    uncertainty. The uncertainty is such that at least one of these other actions
    probably is actually better than the greedy action, but you don't know which one.
    If you have many plays yet to make, then it may be better to explore the nongreedy
    actions and discover which of them are better than the greedy action. Reward is
    lower in the short run, during exploration, but higher in the long run because
    after you have discovered the better actions, you can exploit them. Because
    it is not possible both to explore and to exploit with any single action
    selection, one often refers to the "conflict" between exploration and
    exploitation.
  • There are many
    sophisticated methods for balancing
    exploration and exploitation for particular mathematical formulations of
    the -armed bandit and related problems. However, most of these methods
    make strong assumptions about stationarity and prior knowledge that are
    either violated or impossible to verify in applications and in the full
    reinforcement learning problem that we consider in subsequent chapters
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2.2 Action-Value Methods

  • The simplest action selection rule is to select the action (or one of the
    actions) with highest estimated action value, that is, to select on
    play one of the greedy actions,
    , for which
  • $\varepsilon $-greedy methods
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2.3 Softmax Action Selection

  • We know of no careful comparative studies
    of these two simple action-selection rules.
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