Figure 4.

Dimensionality of feature vectors for each prediction task on MIMIC-III. After applying FIDDLE to the MIMIC-III study cohorts, an ICU visit is represented by time-invariant features and time-dependent features, both of which are high-dimensional. Though the number of time-invariant features is similar across tasks, the number of time-dependent features varies because more data (likely corresponding to more variables) are collected for a later prediction time. FIDDLE: Flexible Data-Driven Pipeline; ICU: intensive care unit.