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= CAGMon etude =
== Descripstion ==

The CAGMon etude is a study version of CAGMon that evaluates the dependence between the primary and auxiliary channels.


== Project goal ==

The goal of this project is to find a systematic way of identifying the abnormal glitches in the gravitational-wave data using various methods of correlation analysis. Usually, the community such as LIGO, Virgo, and KAGRA uses a conventional way of finding glitches in auxiliary channels of the detector - Klein-Welle, Omicron, Ordered Veto Lists, etc. However, some different ways can be possible to find and monitor them in a (quasi-) realtime. Also, the method can point out which channel is responsible for the found glitch. In this project, we study its possible to apply three different correlation methods - maximal information coefficient, Pearson's correlation coefficient, and Kendall's tau coefficient - in the gravitational wave data from the KAGRA detector.


== Participants ==

 * John.J Oh (NIMS)
 * Young-Min Kim (UNIST)
 * Pil-Jong Jung (NIMS)

== Methods and Frameworks ==

==== Maximal Information Coefficient (MIC) ====


\[
r=\frac{\sum_{i=1}^{n} (x_i - \bar{x})(y_i-\bar{y})}{\sqrt{\sum_{i=1}^{n} (x_i-\bar{x})^2} \sqrt{\sum_{i=1}^{n} (y_i -\bar{y})^2}}
\]


==== Pearson's Correlation Coefficient (PCC) ====

==== Kendall's tau Coefficient ====

== Code development ==

==== Basic structure ====

==== Code version ====
 1. CAGmon Etude Alpha
   * for the basic test and evaluation of the LASSO regression method in LIGO
 2. CAGMon Etude Beta
  * added coefficient trend plots with LASSO beta, coherence, MIC, PCC, and Kendall's tau
 3. CAGMon Etude Delta
  * fixed a critical problem that sucked enormous memory when it used the matplotlib module
 4. CAGmon Etude Eta
  * fixed memory issues
  * fixed minor bugs
  * added the range limitation of stride
 5. CAGmon Etude Flat (latest version)
  * added the script of HTML summary page
  * added coefficient distribution plots

== Exemplary results ==

== Beyond ==

== References ==

==== Presentation materials ====

==== Papers ====		  

PJJung/CAGMonEtude (last edited 2021-07-28 08:43:57 by PJJung)