| ANN |
Artificial neural network |
| APE |
Absolute percentage error |
| approx. |
Approximately |
| BCIS |
Building Cost Information Service of the Royal Institution of Chartered Surveyors RICS |
| BCT |
Binary classification tree |
| BKI |
Cost Information Centre of the German Chamber of Architects (German: Baukosteninformationszentrum Deutscher Architektenkammern) |
| BMUB |
German Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety (German: Bundesministerium für Umwelt, Naturschutz, Bau und Reaktorsicherheit) |
| BMVBS |
German Federal Ministry of Transport, Building and Housing (German: Bundesministerium für Verkehr, Bau und Stadtentwicklung) |
| BNB |
Evaluation System for Sustainable Building (German: Bewertungssystem nachhaltiges Bauen) |
| cf. |
Compare |
| CG |
Cost group |
| cGIFA |
Regularly cleaned gross internal floor area |
| CN |
Continuous numeric variable |
| Coef. |
Coefficient |
| Coef. SE |
Coefficients standard error |
| CRT |
Classification and regression tree |
| CV(RMSE) |
Normalised root mean square error |
| DESTATIS |
German Federal Statistical Office (German: Statistisches Bundesamt) |
| DIN |
German Institute for Standardisation |
| DN |
Discrete numeric variable |
| e.g. |
For example |
| et al. |
And others |
| FMBW |
Ministry of Finance of the German Federal State Baden-Wuerttemberg (German: Finanzministerium Baden-Württemberg) |
| GBV |
Gross building volume |
| GEFA |
Gross external floor area |
| GIFA |
Gross internal floor area |
| hGIFA |
Heatable gross internal floor area |
| LN |
Natural logarithm |
| LR |
Linear regression |
| MAPE |
Mean absolute percentage error |
| MAPE (aggr.) |
Aggregated mean absolute percentage error |
| MLP |
Multilayer perceptron |
| MV |
Median value |
| N |
Population size |
| n |
Sample size |
| nbSAR |
Non-built site area |
| NLR |
Non-linear regression |
| No. var. |
Number of variables |
| NPV |
Net present value |
| Obs. |
Observation |
| OLS |
Ordinary least squares |
| PE |
Percentage errors |
| PE (aggr.) |
Aggregated percentage error |
| pSAR |
Planted site area |
| R2 |
Coefficient of determination |
| R2(adj.) |
Adjusted coefficient of determination |
| REFQ |
Reference quantity |
| RMSE |
Root mean square error |
| SAR |
Site area |
| SQ |
Square |
| SQR |
Square root |
| SSE |
Sum of squared errors |
| St. Coef. |
Standardised coefficient |
| Transf. |
Transformation |
| UFA |
Usable floor area |
| VAT |
Value added tax |
| VIF |
Variance inflation factor |
