Operations Research

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  • Great Students and Great Faculty at the Isenberg School

    RENeW
    23 Apr 2015 | 4:15 pm
    Now is that time of the academic year during which there are numerous deadlines but we still find the time to celebrate student and faculty accomplishments. Yesterday not only did we have an All School meeting to recognize doctoral student and faculty achievements but last evening was the UMass Honors banquet and, as Chancellor Kumble Subbaswamy said,  this is always his favorite event of the year because we celebrate faculty accomplishments in research, teaching, and service. At this event we recognize recipients of Distinguished Teaching Awards, Contri Fellowships, and many other…
  • What’s stronger than Moore’s law?

    OR at Work
    25 Apr 2015 | 6:58 am
    Moore’s law turned 50 this week.  In a now famous paper from 1965 Gordon Moore predicts that every 1-2  years the number of transistors on an integrated circuit will double, lowering production cost and increasing its capabilities. Even more, in the same paper Moore predicts that “integrated circuits will lead to such wonders as home computers, automatic controls for automobiles and personal portable communication equipment”. Can you imagine today’s world without them? This technological progress has boosted computational power enormously and enabled us to solve larger…
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    RENeW

  • Great Students and Great Faculty at the Isenberg School

    23 Apr 2015 | 4:15 pm
    Now is that time of the academic year during which there are numerous deadlines but we still find the time to celebrate student and faculty accomplishments. Yesterday not only did we have an All School meeting to recognize doctoral student and faculty achievements but last evening was the UMass Honors banquet and, as Chancellor Kumble Subbaswamy said,  this is always his favorite event of the year because we celebrate faculty accomplishments in research, teaching, and service. At this event we recognize recipients of Distinguished Teaching Awards, Contri Fellowships, and many other…
  • Photos from the Isenberg Scholarship Celebration

    21 Apr 2015 | 5:59 pm
    This evening, we had the pleasure of attending the Isenberg Scholarship Celebration at the Marriott Center at UMass Amherst.  There was some competition this evening since Jack '56 and Suzy Welch were also on campus promoting their new book.I was not going to miss the scholarship celebration since it was the second time that The Nagurney Scholarship was being given to a very deserving student and there were many other students recognized with scholarships and other awards.This year's recipient of The Nagurney Scholarship, which my husband and I endowed,  is a double major in…
  • Isenberg School Supernetwork Center Associates Presenting at ISSR Research Beyond the Academy Conference at UMass

    21 Apr 2015 | 8:29 am
    This is a fabulous week with tonight the Isenberg School Scholarship Celebration taking place at the Marriott Center at UMass Amherst; tomorrow the UMass Amherst Honors dinner at the Campus Center as well as the Isenberg School Senior Barbecue plus All School meeting immediately prior, and Friday is a special conference organized by the Institute for Social Science Research (ISSR) at UMass. And, yes, we are still conducting classes!Friday's conference is on Social Science Research Beyond the Academy with PhD alum panelists and a graduate student research exposition.My former doctoral student…
  • Sustaining Our Electric Power Supply Chains and ISO New England

    19 Apr 2015 | 1:17 pm
    High impact experiences are essential to a college education and, on April 10, 2015, we had the pleasure of visiting ISO - New England to learn about how this organization manages the reliability of electric power for all of New England along with the pricing of it and planning for the future. I had been to ISO - NE several years back and had wanted to bring another group of students to this awesome facility in Holyoke, Massachusetts but the last time we had scheduled a tour, Superstorm Sandy hit, and it was very difficult to reschedule.This time there were several faculty that joined our…
  • Being an Operations Research Paradigm Changer

    17 Apr 2015 | 4:11 pm
    I do believe that female voices need to be heard and not silenced and that is one of the reasons that I started this blog over 5 years ago.This week I had to recall Stella Dafermos, since her birthday was April 14, and, since she was born in 1940, had she lived, she would have been 75 years old this year!Stella Dafermos was my dissertation advisor at Brown University and she was the second female PhD in Operations Research in the world. She passed away on April 4, 1990 - 25 years ago, which is shocking. I spoke with Dr. Elise Miller-Hooks this week, who is now at NSF as a Program Director,…
 
  • add this feed to my.Alltop

    OR at Work

  • What’s stronger than Moore’s law?

    25 Apr 2015 | 6:58 am
    Moore’s law turned 50 this week.  In a now famous paper from 1965 Gordon Moore predicts that every 1-2  years the number of transistors on an integrated circuit will double, lowering production cost and increasing its capabilities. Even more, in the same paper Moore predicts that “integrated circuits will lead to such wonders as home computers, automatic controls for automobiles and personal portable communication equipment”. Can you imagine today’s world without them? This technological progress has boosted computational power enormously and enabled us to solve larger…
  • Do numbers really speak for themselves with big data?

    5 Apr 2015 | 11:31 am
    http://xkcd.com/1289/Chris Anderson, former editor in chief of Wired was clear about it in his provocative essay “The End of Theory: The Data Deluge Makes the Scientific Method Obsolete”. He states that with enough data, computing power and statistical algorithms we can find patterns where science cannot. No need for theory, formal methods to test validity and causation. Correlation is enough, according to Anderson and with him many others.How would this work in practice? Suppose we would like to create a prediction model for some variable Y. This could for example be the stock price of a…
  • A toast to Occam’s razor; Accuracy vs Interpretability

    10 Mar 2015 | 4:09 am
    A question that I get asked a lot these days is when selecting a predictive model how to make the trade-off between model accuracy and model interpretability. Reason for this is that methods like neural nets and random forests are becoming more popular in predictive analytics. They tend to generate more accurate predictions than traditional statistical methods like a logistic regression but are much harder to interpret. Some practitioners, following Occam’s razor principle, prefer simple methods over complex ones in supporting their customers. And I agree, most non mathematically trained…
  • Is Big Data Objective, Truthful and Credible?

    18 Jan 2015 | 8:34 am
    In the past few years the attention for big data has grown enormously. Both business and science are focused on the use of large datasets to find answers to previously unsolvable questions. In the size of the data there seems to hide some kind of magic, which will answer any question that can be imagined. As former Wired editor-in-chief Chris Anderson puts it: “with enough data, the numbers speak for themselves.” As if massive data sets and some predictive analytics always will reflect the objective truth. But can big data really deliver on that promise? Is big data objective,…
  • The Age of Algorithms started on a diet

    8 Dec 2014 | 12:45 am
    With the exponential growth of interest in data analytics, either big or small, the attention for the use of algorithms has risen strongly as well. An algorithm is nothing more than a step-by-step procedure for a calculation.  That is also what makes it so powerful. Algorithms make our lives easier. Recommendations engines single out the product we have been looking for based on our previous purchases and those of buyers similar to us. The NESTthermostat programs itself and continually adapts to our changing life. Facebookselects the news items that are of interest to us, based on what…
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