@inproceedings{whydodocumentlevelpolarityclassifiers, title = {Why Do Document-Level Polarity Classifiers Fail?}, author = {Karen Martins and Pedro O.S Vaz-de-Melo and Rodrygo Santos}, year = {2021}, booktitle = {NAACL 2021 4}, url = {https://aclanthology.org/2021.naacl-main.143}, }