Interpretation of an AR model

rogojel

TS Contributor
#1
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

Dark Knight
#2
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

TS Contributor
#3
hi.
tghis is a kind of a filter, so whatever material sticks to the filter might influence the next run, sort of.