Application of Breiman’s Random Forest to Modeling Structure-Activity Relationships of Pharmaceutical Molecules
- Cite this paper as:
- Svetnik V., Liaw A., Tong C., Wang T. (2004) Application of Breiman’s Random Forest to Modeling Structure-Activity Relationships of Pharmaceutical Molecules. In: Roli F., Kittler J., Windeatt T. (eds) Multiple Classifier Systems. MCS 2004. Lecture Notes in Computer Science, vol 3077. Springer, Berlin, Heidelberg
Leo Breiman’s Random Forest ensemble learning procedure is applied to the problem of Quantitative Structure-Activity Relationship (QSAR) modeling for pharmaceutical molecules. This entails using a quantitative description of a compound’s molecular structure to predict that compound’s biological activity as measured in an in vitro assay. Without any parameter tuning, the performance of Random Forest with default settings on six publicly available data sets is already as good or better than that of three other prominent QSAR methods: Decision Tree, Partial Least Squares, and Support Vector Machine. In addition to reliable prediction accuracy, Random Forest provides variable importance measures which can be used in a variable reduction wrapper algorithm. Comparisons of various such wrappers and between Random Forest and Bagging are presented.
Unable to display preview. Download preview PDF.