Faculty of Science and Technology www.aru.ac.uk/ariti Anglia Ruskin IT Research Institute (ARITI) Nauman Aslam Bayesian Inference in Waveform Signals based.

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Presentation transcript:

Faculty of Science and Technology Anglia Ruskin IT Research Institute (ARITI) Nauman Aslam Bayesian Inference in Waveform Signals based on BAYSIG Dr. Kamal AbuHassan Research Fellow in Computational Intelligence Anglia Ruskin IT Research Institute Dr. Kamal AbuHassan Research Fellow in Computational Intelligence Anglia Ruskin IT Research Institute HBP CodeJam#7 11th-14th January 2016, Manchester, UK

Faculty of Science and Technology Anglia Ruskin IT Research Institute (ARITI) BAYSIG  BAYSIG is a new probabilistic modelling language that enhances the expressiveness of statistical models.  It has been invented and developed by Dr Tom Nielsen (Founder of OpenBrain Ltd) and funded by the BBSRC grants to Dr Tom Matheson (University of Leicester).  It allows you to perform Bayesian statistical inference in a variety of models based on different kinds of data.  BAYSIG has an online channel known as BayesHive (  BayesHive has a point-and-click interface to build statistical models and load data.

Faculty of Science and Technology Anglia Ruskin IT Research Institute (ARITI) Bayesian Inference in ECG Models  Using Bayesian inference to estimate parameters from real ECG data.  One aim is to assess the differences in the estimated parameters between healthy subjects and patients with abnormal cardiovascular conditions.

Faculty of Science and Technology Anglia Ruskin IT Research Institute (ARITI) Bayesian Inference in qIF Neuron Model AbuHassan K, Nielsen T, Marra V, Hossain A, Matheson T (in preparation) Parameter Estimation for a Noisy Quadratic Integrate-and-Fire Neuron Model based on Bayesian Inference. ParametersLower limit Upper limit v0v0 -50 mV0 mV v threshold -60 mV0 mV v rest -100 mVv threshold I -50 pA50 pA n 0 mV1 mV The bounding limits for the uniform prior distributions This research employs Bayesian inference to estimate the parameters of a noisy quadratic integrate-and-fire neuron model from synthetic voltage traces. Summarized results from Bayesian inference

Faculty of Science and Technology Anglia Ruskin IT Research Institute (ARITI) Bayesian Inference in qIF Neuron Model AbuHassan K, Nielsen T, Marra V, Hossain A, Matheson T (to be submitted) Parameter Estimation for a Noisy Quadratic Integrate-and-Fire Neuron Model based on Bayesian Inference. Reference data (red) were compared to the simulated data (blue) generated by the model A posterior predictive check (PPC) was used to assess the results of parameter estimation. Sample recording from a regular spiking pyramidal cell responding to in-vivo-like current injection. ( Gerstner and Naud, 2009)

Thank you