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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: J Neurosci Methods. 2016 Feb 5;263:36–47. doi: 10.1016/j.jneumeth.2016.01.022

Figure 6.

Figure 6

Estimation result from HDP-HMM (Gibbs) for the rat hippocampal ensemble spike data. (A) The total number of states (solid blue) slowly increases as states are allocated for a small number of time bins. The number of states converges after 2500 iterations. (B) The log likelihood of the training data grows consistently as highly specific states are added. (C, D) The concentration parameters, α0 and γ also converge after 2500 iterations. (E, F) The inferred state transition matrix P and neuronal firing matrix Λ = {λc,i} drawn from the last iteration.