15.3.8 Fit Comparison

Fit-Comparison

OriginPro's fit comparison tools make it easy for you to compare models or compare data:

Comparing Models to One Dataset

OriginPro provides two tools to help user find the best model for his data.

• Rank Models
• Compare Models

Please look at the comparison of these two tools as below

Fit and rank multiple functions in a category

The Rank Models tool in OriginPro can fit and rank multiple functions to a dataset. The fit results can be ranked by either Akaike (AIC) or Bayesian Information Criterion (BIC), to determine the best fitting model for your data.

To perform the Rank Models operation

• Choose Analysis: Fitting: Rank Models from Origin menu

or

• Type funcrank -d in the Script Window

Compare two fitting models to one dataset

The Compare Models tool helps to user to decide which model works better with your data

To perform the Compare Model operation

1. Perform fitting twice using two different fitting functions for the same fitting data, and create two fitting reports.
2. Select Analysis: Fitting: Compare Models from Origin menu.

Comparing two datasets with one fitting model

If you want to evaluate which data better fits a particular model, you can use Compare Datasets tool:

To perform the Compare Model operation

1. Perform fitting on two different datasets, using the same fitting function, and create two fitting reports.
2. Select Analysis: Fitting: Compare Datasets from Origin menu.