OPERA Model Calculation Details: Vapor Pressure

Structural image of N-(p-Tolyl)-2-naphthylamine
Chemical Identifiers
Preferred name: N-(p-Tolyl)-2-naphthylamine
DTXSID: DTXSID40281755
DTXCID: DTXCID40232909
CASRN: 644-16-6
Molecular weight: 233.314
Model Results
Model name: OPERA_VP
Model source: OPERA2.8
Property name: Vapor Pressure
Property description: The pressure exerted by a vapor in thermodynamic equilibrium with the liquid phase in a closed system at a given temperature
Experimental value: Experimental value from OPERA2.8
 N/A
Predicted value: Predicted value from the model
1.74E-08 mmHg
Confidence level:  Confidence level is calculated from the accuracy of the predictions of the five nearest neighbors weighted by their distance to the query chemical
0.382
Combined applicability domain:  Combined applicability domain from multiple AD measures
Inside training set (
Global AD  Global applicability domain via the leverage approach
= 1) but poor local representation (
Local AD index Local applicability domain index is relative to the similarity of the query chemical to its five nearest neighbors from the training set
= 0.384 ≤ 0.4)
Model Performance
Vapor Pressure Model Results Histogram of Vapor Pressure Data
Weighted kNN model statistics
Training (75%) 5-fold CV (75%) Test (25%)
R2 RMSE Q2 RMSE R2 RMSE
0.91 1.08 0.91 1.08 0.92 1.0

Model summary in QSAR Model Reporting Format (QMRF)
Nearest Neighbors from Model Knowledge Base
Neighbor: 1
Measured:  3.98E-07 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 1.02E-07  mmHg

Structural image of Dicofol
Dicofol

 Neighbor: 2
Measured:  4.79E-09 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 2.24E-07  mmHg

Structural image of 1-Hydroxypyrene
1-Hydroxypyrene

 Neighbor: 3
Measured:  7.59E-07 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 1.12E-06  mmHg

Structural image of Carbazole
Carbazole

 Neighbor: 4
Measured:  3.72E-12 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 2.51E-08  mmHg

Structural image of Pencycuron
Pencycuron

 Neighbor: 5
Measured:  2.24E-07 mmHg
Predicted: Five fold cross validation prediction for the neighbor
 5.89E-10  mmHg

Structural image of Fenarimol
Fenarimol