Possible features for the data generated by array of gas sensors












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The data is generated by an array of gas sensors to classify the respective gas odor. I am attaching the snippet of the data.



enter image description here



How can I derive the following features for the data in python?



Change over time: Cm+1 = (Xm+1 – Xm)/(tm+1 – tm)



Rate of change over time: RTm= (Cm+1 – Cm)/(tm+1 – tm)



Growth or decay: Gm+1 = (Xm+1 – Xm)/Xm



Rate of growth or decay: RGm= (Gm+1 – Gm)/(tm+1 – tm)



Count of values above or below a threshold value



Moving average = Average of (Xm-p to Xm)



Moving standard deviation = Standard deviation of (Xm-p to Xm)



Relative average = Moving average / Global average



Relatives standard deviation = Moving standard deviation / Global standard deviation



Ratio of changes, growth rate etc. with standard deviation



Features involving trend of values across various aggregation windows: change and rate of change in average, standard deviation etc. across windows



Any demonstration will be highly helpful for my understanding. Thanks in advance.









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    0












    $begingroup$


    The data is generated by an array of gas sensors to classify the respective gas odor. I am attaching the snippet of the data.



    enter image description here



    How can I derive the following features for the data in python?



    Change over time: Cm+1 = (Xm+1 – Xm)/(tm+1 – tm)



    Rate of change over time: RTm= (Cm+1 – Cm)/(tm+1 – tm)



    Growth or decay: Gm+1 = (Xm+1 – Xm)/Xm



    Rate of growth or decay: RGm= (Gm+1 – Gm)/(tm+1 – tm)



    Count of values above or below a threshold value



    Moving average = Average of (Xm-p to Xm)



    Moving standard deviation = Standard deviation of (Xm-p to Xm)



    Relative average = Moving average / Global average



    Relatives standard deviation = Moving standard deviation / Global standard deviation



    Ratio of changes, growth rate etc. with standard deviation



    Features involving trend of values across various aggregation windows: change and rate of change in average, standard deviation etc. across windows



    Any demonstration will be highly helpful for my understanding. Thanks in advance.









    share







    New contributor




    ach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







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      $begingroup$


      The data is generated by an array of gas sensors to classify the respective gas odor. I am attaching the snippet of the data.



      enter image description here



      How can I derive the following features for the data in python?



      Change over time: Cm+1 = (Xm+1 – Xm)/(tm+1 – tm)



      Rate of change over time: RTm= (Cm+1 – Cm)/(tm+1 – tm)



      Growth or decay: Gm+1 = (Xm+1 – Xm)/Xm



      Rate of growth or decay: RGm= (Gm+1 – Gm)/(tm+1 – tm)



      Count of values above or below a threshold value



      Moving average = Average of (Xm-p to Xm)



      Moving standard deviation = Standard deviation of (Xm-p to Xm)



      Relative average = Moving average / Global average



      Relatives standard deviation = Moving standard deviation / Global standard deviation



      Ratio of changes, growth rate etc. with standard deviation



      Features involving trend of values across various aggregation windows: change and rate of change in average, standard deviation etc. across windows



      Any demonstration will be highly helpful for my understanding. Thanks in advance.









      share







      New contributor




      ach is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      The data is generated by an array of gas sensors to classify the respective gas odor. I am attaching the snippet of the data.



      enter image description here



      How can I derive the following features for the data in python?



      Change over time: Cm+1 = (Xm+1 – Xm)/(tm+1 – tm)



      Rate of change over time: RTm= (Cm+1 – Cm)/(tm+1 – tm)



      Growth or decay: Gm+1 = (Xm+1 – Xm)/Xm



      Rate of growth or decay: RGm= (Gm+1 – Gm)/(tm+1 – tm)



      Count of values above or below a threshold value



      Moving average = Average of (Xm-p to Xm)



      Moving standard deviation = Standard deviation of (Xm-p to Xm)



      Relative average = Moving average / Global average



      Relatives standard deviation = Moving standard deviation / Global standard deviation



      Ratio of changes, growth rate etc. with standard deviation



      Features involving trend of values across various aggregation windows: change and rate of change in average, standard deviation etc. across windows



      Any demonstration will be highly helpful for my understanding. Thanks in advance.







      python





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