Prediction of Mutagenicity of Chemicals from Their Calculated Molecular Descriptors: A Case Study with Structurally Homogeneous versus Diverse Datasets

Title:Prediction of Mutagenicity of Chemicals from Their Calculated Molecular Descriptors: A Case Study with Structurally Homogeneous versus Diverse Datasets

Volume: 11 Issue: 2

Author(s): Subhash C. Basak and Subhabrata Majumdar

Affiliation:

Keywords: Envelope models, hierarchical quantitative structure-activity relationship (HiQSAR), interrelated two-way clustering; linear discriminant analysis, mutagenicity, ridge regression, topological indices, congenericity principle, diversity begets diversity principle.

Abstract: Variation in high-dimensional data is often caused by a few latent factors, and hence dimension reduction or variable selection techniques are often useful in gathering useful information from the data. In this paper we consider two such recent methods: Interrelated two-way clustering and envelope models. We couple these methods with traditional statistical procedures like ridge regression and linear discriminant analysis, and apply them on two data sets which have more predictors than samples (i.e. n << p scenario) and several types of molecular descriptors. One of these datasets consists of a congeneric group of Amines while the other has a much diverse collection compounds. The difference of prediction results between these two datasets for both the methods supports the hypothesis that for a congeneric set of compounds, descriptors of a certain type are enough to provide good QSAR models, but as the data set grows diverse including a variety of descriptors can improve model quality considerably.

Cite this article as:

C. Basak Subhash and Majumdar Subhabrata, Prediction of Mutagenicity of Chemicals from Their Calculated Molecular Descriptors: A Case Study with Structurally Homogeneous versus Diverse Datasets, Current Computer-Aided Drug Design 2015; 11 (2) . https://dx.doi.org/10.2174/1871524915666150722121322