Design of a Clinical Decision Support System for Fracture Prediction Using Imbalanced Dataset

Table 8

Optimal SVM parameters and selected features for CDSS design.

Undersampling + objective function	Random + OB1	Random + OB2	Clustered + OB1	Clustered + OB2	One sided + OB1	One sided + OB2
α	3.3	11.9	22.0	3.6	25.0	16.8
γ	−5.6	−6.8	−22.0	−2.8	−25.0	−13.5
Sex	x	x	x	x	x	x
Age	x	x	x	x		x
Asthma
COPD
Bronchiectasis
DM
Cancer
Liver cirrhosis
ESRD
Osteoporosis
OCS_followup_days	x		x		x	x
OCS_exposed_days	x	x	x	x		x
ICS_followup_days	x	x	x	x		x
ICS_exposed_days	x	x	x	x		x
OCS_dose	x	x	x
ICS_dose	x		x	x
OCS_follow_daily_dose	x			x		x
OCS_exposed_daily_dose		x	x
ICS_follow_daily_dose	x	x	x	x		x
ICS_exposed_daily_dose