2.1 Data Collection and Pretreatment
An available dataset, Dataset A, is established by collecting
experimental T g values of polyesters
from the polymer database,PolyInfo 45. The data selection criteria
include: number average molar mass (Mn )
> 6000 g mol-1, weight average molar mass
(Mw ) > 10000 g
mol-1, and T g measured by
differential scanning calorimetry (DSC). For
polyesters with multipleT g values from different sources, a median is
chosen. The final dataset includes 695 polyesters withT g values ranging from -78 to 345 ℃ (Figure S1).
The dataset is randomly divided into a training set and a testing set by
the ratio of 4:1.