# Posts

### September 02, 2014

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As Retraction Watch readers probably know, we’re big fans of PubPeer, the post-publication peer review site that allows comments on papers. Discussions there have led to a number of corrections and retractions, and even more importantly, authors are starting to respond to clarify results, acknowledge errors, or otherwise advance knowledge. After all, as we often […]

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The videos of the ICML 2014 are here. Here are the Keynotes and tutorials, some of which you have already heard about if you are a faithful reader of Nuit Blanche.Keynote: On the Computational and Statistical Interface and "Big Data" Authors: Michael JordanPeople, Decisions, and Cognition: On Deeper Engagements with Machine Learning Authors: Eric HorvitzAlgorithmic Trading and Machine Learning Authors: Michael KearnsTutorial: Frank-Wolfe and Greedy Optimization for Learning with Big
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3:20 PM | IMAGINARY exhibition

Just discovered something super cool. The IMAGINARY platform (http://imaginary.org/) grew out of an exhibition organised in 2008. Here is some awesome mathematical eye candy http://imaginary.org/galleries

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3:00 PM | Observations From Bizzaro World

This is year six. I've taught academic (on level) classes for every year prior. It's what I know, and what I really enjoyed. Last year I took a random assortment of on level kids on a crazy experiment and they blew me away.The world is different now. In what started as a quest to attempt Pivot Algebra II on a single PreAP class, I'm now knee deep in AP and PreAP. I have 154 students in 5 classes (2 Calc, 3 PreCal). The first week was, strange.PreCal numbers are 34, 36, 36, the largest classes
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2:53 PM | Expo Conversations – Part 1

Plenty of people talk about building cool things, but how many of us really do it? Sure, you can do amazing things these days with Arduino boards and cloud computing, but sitting down and creating something that works is another matter entirely. This is the story of how a determined... read more >>

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As students head back to school and back to higher standards in math and science, we're highlighting outstanding STEMworks programs that help teachers prepare them for success. From lesson plans to lab materials, these STEMworks programs equip teachers with tools and resources to bring math and science alive in their classrooms. Check out our September Spotlight programs:Tags: STEMworks, K-12, math, science, standards

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Please join us for this kick off event for Math Circle! Naoki Sato will give an enlightening talk about Game Theory as described below: When playing a two-player game, what is the best move? What is the best overall strategy? And is there a way to determine who can win? In this talk, we […]

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The FBI's Uniform Crime Reporting Program collects data from the more than 18,000 law enforcement agencies to provide statistics about crime and law enforcement in the U.S. But, it isn't required that agencies submit justifiable homicide data to participate in the program, making the largest database of justifiable homicides in the U.S. very incomplete.

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This year, Wolfram is excited to be sponsoring the tenth anniversary of the annual Pygmalion Music Festival, which takes place in our hometown of Champaign–Urbana. If you aren’t familiar with Pygmalion, it’s a music festival held locally that brings together incredible musical artists, authors, and vendors in one amazing weekend. Of course, the music is [...]

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A series of huge numbers have been broken into their prime-number building blocks faster than ever before, with implications for online cryptography

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1:59 PM | Monotonic Sequential Continuity

This problem is the continuation of my previous post on Monotonic Sequence.ProblemProve the following: If $A_k$ is monotone, then \begin{equation} \mathrm{P}\left(\displaystyle\lim_{n\to\infty} A_n\right)=\displaystyle\lim_{n\to \infty}\mathrm{P}(A_n). \end{equation} SolutionProof. If $\{A_k\}$ is monotone, then \begin{equation}\nonumber \mathrm{P}\left(\lim_{n\to \infty} A_n\right) = \begin{cases} \displaystyle\mathrm{P}\left(\bigcup_{k=1}^\infty A_k\right)&\text{if}\;\{A_k\}\;\text{is […]

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Is fractal geometry “the geometry of nature”? I was asked this question recently in an email from someone who had watched the PBS video Hunting the Hidden Dimension that I worked on, and appeared in, a few years ago.It would have been easy to simply reply “Yes,” and for many audiences I would (and have) done just that—for this was by no means the first time I had been asked that question, or others very much like it. But the context in which this recent questioner raised the issue […]

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Cory Toth is up to nine retractions. The University of Calgary researcher who told us earlier this year that he “will not be publishing in the world of science in the future” has retracted two papers from Neuroscience. Here’s the notice for “Local erythropoietin signaling enhances regeneration in peripheral axons:” This article has been retracted: […]

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1:23 PM | Questions about “Too Good to Be True”

Greg Won writes: I manage a team tasked with, among other things, analyzing data on Air Traffic operations to identify factors that may be associated with elevated risk. I think its fair to characterize our work as “data mining” (e.g., using rule induction, Bayesian, and statistical methods). One of my colleagues sent me a link […]
The post Questions about “Too Good to Be True” appeared first on Statistical Modeling, Causal Inference, and Social Science.

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1:22 PM | The Excitement of September

It’s September, and my wife, my daughters, and I have all started our school years. I am excited, as I am nearly every year at this time. September is the time for hope. I have new students that will be engaged and, I hope, experience the joy of learning. I am teaching a course that I have never taught to a group of students, most of whom I have already had. I am excited about working with new content and seeing the ideas that students will bring to it.In just two class meetings, there have
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1:06 PM | Logic Puzzles Made Visual

When I was child, I loved to solve the brainteasers in logic puzzle magazines. You probably know the type: Ruth, Phyllis, and Joan each bought a different kind of fruit (orange, apple, pear) and a different vegetable (spinach, kale, carrots) at the supermarket. No one bought both an orange and carrots. Ruth didn’t buy an apple or […]

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1:03 PM | Pythagoras' Theorem

Pythagoras' Theorem is one of my favourite topics to teach. In my experience, students quite like it too. At first they may be intimidated by the new and seemingly complex mathematics. It's probably the first time they've seen words such as theorem, proof and hypotenuse so no wonder they're apprehensive. But they'll quickly get the hang of it.
When A level students have to find the distance

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1:00 PM | Math for America Facebook Profile

Math for America is an outstanding professional organization that focuses on training and retaining high quality math and science teachers. MfA is running an ongoing series of profiles on Facebook on members of their community, and I am proud to be one of the subjects. One of the best aspects of being a part of the MfA community […]

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1:00 PM | Context is important.

As you probably know, the Detroit Free Press recently ran a multipart expose on corruption in Michigan's charter schools. (You can find my summary of the series in this Monkey Cage post). The reporting can stand by itself but you get a deeper appreciation if you consider how these revelations look to the people there. To do so, it helps to look at the other government and education stories that are currently in the news in Michigan.From The Detroit News:State education officials have approved a
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12:18 PM | Important Updates in the Salaita Case

Yesterday evening, reports began to emerge that University of Illinois at Urbana-Champaign Chancellor Phyllis Wise has forwarded Steven Salaita's appointment to the University's Board of Trustees, who will vote on it at their meeting ten days from now, on September 11th. Obviously, this is a hopeful sign, given that the...

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12:18 PM | ISBA@NIPS

[An announcement from ISBA about sponsoring young researchers at NIPS that links with my earlier post that our ABC in Montréal proposal for a workshop had been accepted and a more global feeling that we (as a society) should do more to reach towards machine-learning.] The International Society for Bayesian Analysis (ISBA) is pleased to […]

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12:04 PM | September 2, 104

Solution at the bottom of this page.Like this problem? Try our Contest Problem Book series!Exercise your mind daily with a problem from the AMC-8, AMC-10, or AMC-12, provided by Mathematical Association of America's American Mathematics Competitions.

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12:00 PM | FinancialConnectedness.org Site Now Up

The Financial and Macroeconomic Connectedness site is now up, thanks largely to the hard work of Kamil Yilmaz and Mert Demirer. Check it out at http://financialconnectedness.org. It implements the Diebold-Yilmaz framework for network connecteness measurement in global stock, sovereign bond, FX and CDS markets, both statically and dynamically (in real time). It includes results, data, code, bibliography, etc. Presently it's all financial markets and no macro (e.g., no global business […]

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Stephen Taylor first wrote about Zometool adventures for our 1001 Circles series. Now Stephen shares a more personal story, to celebrate Math Storytelling Day on September 25. For some, the love of mathematics grows gradually, over time. Other people experience…Read more ›

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11:15 AM | Sabbatical – last 48 hours of freedom

Summer Vacation 2013. Then a study sabbatical 2013-14. Then Summer Vacation 2014. And now, after 14 months out of school with very few exceptions, there’s one more hour until I’m going back. The last 48 hours: Sunday, 8AM Answer e-mails, read news, light breakfast in room, stretch, pack. Sunday, noon. Check out. Check bag. Walk down […]

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Llega septiembre y empieza el curso. Si eres profesor de matemáticas de secundaria, bachillerato o universidad, te proponemos complementar tu clase tradicional con las Aulas Virtuales Sangakoo, una plataforma online donde tus alumnos aprenderán matemáticas, haciendo matemáticas. Cada aula virtual incluye un libro digital con toda la teoría matemática del curso, un fórum para […]

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10:37 AM | Data science expiration date

About three years ago JD Long said I like the term “Data Scientist” for now. I expect that term will be meaningless in 5 years. Sounds about right.

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10:31 AM | Math Gifs!

Jay came through with a great link this week. Check out this list of great math/sci gifs. Thanks, Jay!

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10:28 AM | ETAPS 2015 2nd call for papers

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CALL FOR PAPERS: ETAPS 2015
18th European Joint Conferences on Theory And Practice of Software
London, UK, 11-18 April 2015
http://www.etaps.org/2015
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-- ABOUT ETAPS --
ETAPS is the primary European forum for academic and industrial
researchers working on topics relating to software science.
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