Interpretation of an AR model

[rogojel]

hi,
looking at process times of a rather complex machine I found that an AR(2) model describes it quite well. Does it make sense to interpret this as an indication that the machine has a "memory" of about 2 runs ? E.g. insufficient cleaning between runs?

thanks a lot!

 

[vinux]

hi,
looking at process times of a rather complex machine I found that an AR(2) model describes it quite well. Does it make sense to interpret this as an indication that the machine has a "memory" of about 2 runs ? E.g. insufficient cleaning between runs?

thanks a lot!

Yes. It is a 'short memory' process. I didn't fully understand the example part "insufficient cleaning between runs".

 

[rogojel]

hi.
tghis is a kind of a filter, so whatever material sticks to the filter might influence the next run, sort of.