Aperiodic Blog

  • 17 Aug 2017 » Easy unsupervised learning demonstration

    With python, scikit-learn, and handwritten digits. This is a notebook that I made for a high school student who visited our lab. It is a simple introduction to dimensionality reduction and should not be considered a statement that I'm an expert in unsupervised learning..

  • 27 Feb 2017 » The Cosyne Workshops, day 1: Deep Learning and the Brain

    Today, I went to the 'Deep Learning and the Brain' workshop. This post includes some excellent considerations I heard there on analogies between deep artificial networks and the cortex. I have included in this post yesterday's intervention by Yoshua Bengio.

  • 25 Feb 2017 » The Cosyne Chronicles, vol. 3

    Random samples from days three and four.

  • 24 Feb 2017 » The Cosyne Chronicles, vol. 2

    Today: sensory processing, neural dynamics, Wei Ji Ma's personal life, memory, reinforcement learning.

  • 23 Feb 2017 » The Cosyne Chronicles, vol. 1

    Today: excitement, food reception, announcements, two wonderful opening talks, and a poster session full of sleepy Europeans.

  • 20 Jan 2017 » Yet another power law

    I was looking at the teaching awards nominations of my university's teaching staff. I found a Zipf-like power law (for a change).

  • 26 May 2016 » Dynamical systems with Python: Wilson and Cowan's model

    Wilson and Cowan, in the seventies, developed a dynamical systems approach to the study of the large-scale behaviour of neuronal population. Their approach doesn't mind the behaviour of single neurons, but works at the level of population firing rates (roughly, the number of neurons that fire in the unit time) for two subpopulation the inhibitory neurons and the excitatory neurons.

  • 23 May 2016 » A spike train challenge

    Recently, while discussing during a journal club, I wondered how easily a computational neuroscientist can distinguish between a real neuronal recording and a simulated dataset. So I took a real dataset, imitated it with a model, and I'm asking you to tell me which one is which.