Hi All,(adsbygoogle = window.adsbygoogle || []).push({});

I am not sure if this is the right section to post this question but it does involve probability..so please redirect me if necessary.

I am currently looking at the Robinson et al. (2013) paper on rank vector entropy in MEG (doi: 10.3389/fncom.2012.00101). Due to my lack of mathematical knowledge I am struggling to understand what role the 'leaky integrator' performs in this algorithm (or what a leaky integrator does in general?).

Essentially a state histogram is produced counting all the occurrences of the rank vector states and the probability of a state occurring is calculated...however, this just produces the absolute entropy across time once Shannon's entropy has been applied. Am I right in thinking by introducing a time constant using the leaky integrator we are able to measure the relative fluctuations in entropy over time as opposed to the absolute entropy? And if so, how does the introduction of a time constant or leaky integrator achieve this? (I'm not sure mathematically how this gives us temporal information).

Apologies if this is posted in the wrong section or exposes my complete lack of knowledge!

Many thanks.

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Rank Vector Entropy

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

Loading...

Similar Threads - Rank Vector Entropy | Date |
---|---|

B Percentile Rank | May 5, 2017 |

Expected Value and Variance for Wilcoxon Signed-Rank Test | Oct 11, 2014 |

Z-score to Percentile Rank Formula? | Jan 8, 2014 |

Ranking football Statistics | Sep 18, 2012 |

Rank statistics for jointly normal random vector | Mar 3, 2008 |

**Physics Forums - The Fusion of Science and Community**