SIMCA^® and SIMCA^®-online compatibility issues (Q904)

Summary:

This article gives an overview of the compatibility issues present in SIMCA^® 15 and SIMCA^®-online 15.

Symptoms:

File format: A project created in SIMCA^® 15.0.1 or SIMCA^®-online 15.0.1 cannot be used for predictions in SIMCA^® 15.0.0 nor SIMCA^®-online 15.0.0.

Dynamic lags: There may be small differences in the results from models using dynamic lags between SIMCA^® 15.0.0/15.0.1 and SIMCA^®-online 15.0.1 (first version with dynamic lags).

Batch level dataset creation: https://umetrics.com/kb/phase-models-incorrect-after-adding-dataset-same....

Batch phase model creation: https://umetrics.com/kb/batch-level-dataset-and-model-blm-are-wrong-some....

Workaround:

Dynamic lags: Use SIMCA^® 15.0.2 in combination with SIMCA^®-online 15.0.1 or later for models with dynamic lags.

Batch models:Use SIMCA^® 15.0.2 in combination with any SIMCA^®-online 15 version andespecially if the projects include batch level models.

More Information:

File format: The usp-file format was broken between SIMCA^® 15.0.0 and 15.0.1. This means that:

• Projectscreated in SIMCA^® 15.0.1 are compatible with SIMCA^®-online 15.0.1 but not with SIMCA^® 15.0.0 nor SIMCA^®-online 15.0.0. That is also the case for projects created in SIMCA^®-online 15.0.1.
• Projects created in SIMCA^® 15.0.2 are compatible with all SIMCA^®-online 15-versions.

Dynamic lags: The calculations behind the handling of dynamic lags were improved after the release of SIMCA^® 15.0.0 and SIMCA^®-online 15.0.0.