Ranking Convolutional Recurrent Neural Networks for Purchase Stage Identification on Imbalanced Twitter Data Heike Adel author Francine Chen author Yan-Ying Chen author 2017-04 text Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 2, Short Papers Mirella Lapata editor Phil Blunsom editor Alexander Koller editor Association for Computational Linguistics Valencia, Spain conference publication adel-etal-2017-ranking https://aclanthology.org/E17-2094/ 2017-04 592 598