필터 지우기
필터 지우기

How to solve this error

조회 수: 2 (최근 30일)
Yosuke Nakatani
Yosuke Nakatani 2023년 10월 31일
답변: Arthur Goldsipe 2023년 10월 31일
To estimate parameter values for my model, fit program was used in model analyzer (Simbiology).
Parameter was successfully estimated when I choosed uniform weght ([]) in the program. However, if I changed weight option (e.g. 1/[DV1 DV2]), program didn't work and got an error message ("All values in the weights matrix must be positive, real, and finite.").
I'd like to know how to solve this problem (which is the problem model or data?)
  댓글 수: 2
Walter Roberson
Walter Roberson 2023년 10월 31일
If DV1 or DV2 are 0 then 1 divided by them would be infinite which would be a problem.
Yosuke Nakatani
Yosuke Nakatani 2023년 10월 31일
Hi Walter,
Thank you. I input zero for DV1 at time 0. I could use other weighting option.

댓글을 달려면 로그인하십시오.

답변 (1개)

Arthur Goldsipe
Arthur Goldsipe 2023년 10월 31일
(Copying answer from comments.) The problem was that one value of DV1 was 0, so the resulting weight was infinite.
One thing I would add to the above answer is that it often doesn't make sense to use this value of 0 during fitting, since the initial conditions of the model are usually guaranteed to provide a value of 0. So you could replace the value of 0 with NaN to indicate that there is no measured data for fitting.

커뮤니티

더 많은 답변 보기:  SimBiology Community

카테고리

Help CenterFile Exchange에서 Import Data에 대해 자세히 알아보기

제품

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by