Title: Performance study of Boosted Decision Trees in a Gravitational Wave Burst Search Authors: Satya Mohapatra, Sebastian Fischetti, Laura Cadonati We explore the implementation of multivariate classification analysis in gravitational wave burst searches, to separate signals from background. We focus on the Boosted Decision Tree algorithm and the coincidence between three interferometers (two of which co-located) as applied in the LSC S5 burst analysis with the Omega pipeline. The Boosted Decision Tree algorithm, from the ROOT TMVA package, is applied to bandwidth, duration, H1H2 coherent energy, H1H2 correlated energy and L1 normalized energy.