Hi,
In sample code, there's a predefined function to extract features name: **restFeaturesDf** for rest dataset and **walkingFeaturesDf** for walking data.
There are 25 features given by this function, which are given by acronyms in column names listed below. Is there a reference for the acronyms. I know this is not related directly to the project, still I'd like to know what they are.
```
colnames(restFeaturesDf)
[1] "deviceMotion_walking_rest.json.items"
[2] "recordId"
[3] "healthCode"
[4] "idx"
[5] "rest_json_file"
[6] "meanAA"
[7] "sdAA"
[8] "modeAA"
[9] "skewAA"
[10] "kurAA"
[11] "q1AA"
[12] "medianAA"
[13] "q3AA"
[14] "iqrAA"
[15] "rangeAA"
[16] "acfAA"
[17] "zcrAA"
[18] "dfaAA"
[19] "turningTime"
[20] "postpeak"
[21] "postpower"
[22] "alpha"
[23] "dVol"
[24] "ddVol"
[25] "error"
```
If this cannot be provided. It's fine. But if it's available I'd like to know as some of them are not very clear.
Thanks,
Created by Sanju Sinha sanjusinha7 Hi @sanjusinha7 ,
I've added a Markdown file to the PDBiomarkChallenge GitHub Repo ([here](https://github.com/Sage-Bionetworks/PDBiomarkerChallenge/blob/master/featureDefinitions.md)) that has the acronyms and their definitions.
Hope this helps!