Image Captioning with Visual Object Representations Grounded in the Textual Modality by Dusan Vari ˇ sˇ 1∗ , Katsuhito Sudoh2,3 , Satoshi Nakamura2,3 1Charles University, Faculty of Mathematics and Physics, Czechia 2Nara Institute of Science and Technology, Japan 3RIKEN AIP, Japan varis@ufal.mff.cuni.com {sudoh,s-nakamura}@is.naist.jp