Performance of natural language classifiers in a question-answering system

@article{Bakis2017PerformanceON,
  title={Performance of natural language classifiers in a question-answering system},
  author={Raimo Bakis and Daniel P. Connors and Parijat Dube and Pavan Kapanipathi and Abhishek Kumar and Dmitry Malioutov and Chitra Venkatramani},
  journal={IBM Journal of Research and Development},
  year={2017},
  volume={61},
  pages={14}
}