Decision Trees in the Analysis of the Intensity of Damage to Portal Frame Buildings in Mining Areas

摘要

The article presents a preliminary database analysis regarding the technical condition of 94 portal?frame buildings located in the mining area of Legnica-G?ogów Copper District (LGOM), using the methodology?of decision trees. The scope of the analysis was divided into two stages. The first one included?creating a decision tree by a standard CART method, and determining the importance of individual damageindices in the values of the technical wear of buildings. The second one was based on verification of the?created decision tree and the importance of these indices in the technical wear of buildings by means?of a simulation of individual dendritic models using the method of random forest. The obtained results?confirmed the usefulness of decision trees in the early stage of data analysis. This methodology allows?to build the initial model to describe the interaction between variables and to infer about the importance?of individual input variables.