neurotroph

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  • Fraud in Medical Research

    Already in September last year, Der Spiegel published an interview with Peter Wilmshurst, a British medical doctor and whistleblower who made fraudulent practices in medical research public. A very interesting article that’s worth reading.

    July 5, 2016
  • The Vanual: Customizing a Van for a Mobile Lifestyle

    The Vanual: Customizing a Van for a Mobile Lifestyle

    While sitting in one of my three offices, dreaming of beautiful, exotic and serene places is just natural. Zach Both does not dream about these places, he just goes there. But he is not a travel-a-my-life type of guy, but a film maker and designer who happens to life mobile: He customized a van to […]

    June 20, 2016
  • Euro Cup predictions through Stan

    Euro Cup predictions through Stan

    After I calculated the probabilities of Germany dropping out of the world cup two years ago, I always wanted to do some Bayesian modeling for the Bundesliga or the Euro Cup that started yesterday. Unfortunately, I never came to it. But Andrew Gelman posted some model by Leonardo Egidi today on his blog: Leonardo Egidi […]

    June 11, 2016
  • Choosing Cut-Offs in Tests

    Choosing Cut-Offs in Tests

    My last blog post was on the difference between Sensitivity, Specificity and the Positive Predictive Value. While showing that a positive test result can represent a low probability of actually having a trait or a disease, this example used the values of Sensitivity and Specificity as pre-known input. For established tests and measures they indeed […]

    June 7, 2016
  • Visualizing Sensitivity and Specificity of a Test

    In my university course on Psychological Assessment, I recently explained the different quality criteria of a test used for dichotomous decisions (yes/no, positive/negative, healthy/sick, …). A quite popular example in textbooks is the case of cancer screenings, where an untrained reader might be surprised by the low predictive value of a test. I created a […]

    June 2, 2016
  • Serengeti Park

    Serengeti Park

    Today, I don’t have cherry blossoms for you. Just some animals from the Serengeti Park. You can find higher resolutions at my 500px profile.

    April 23, 2016
  • Vagrant VM for starting a Rails project

    This is something off-topic for this blog, but after spending several hours setting up an environment for developing and testing a Ruby on Rails project, I’d like to share my solution. I recently had an idea for a small web-project, for that I’d like to use Ruby on Rails. From previous attempts of using Rails, […]

    April 23, 2016
  • “Statistics is in a mess.”

    March 22, 2016
  • The Valley of Shit

    Having only started my PhD studies a few months ago, I am still eager and highly motivated to finish what I have just started. However, first doubts on the topic and the quality of my work already came (and went again, luckily), so I could relate to this post on the Valley of Shit: The […]

    March 16, 2016
  • Replicability, Data Quality and Bayesian Methods

    On the About page I wrote, that I blog about things I come across while researching for my PhD. So, you may very well ask what this PhD is supposed to be about. For the interested reader — researchers and the uninitiated alike —, here is some overview on my current plans and research focus.

    March 15, 2016
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