@inproceedings{zhang_las_emojis, title={Using Student Annotated Hashtags and Emojis to Collect Nuanced Affective States}, author={Zhang, Amy X. and Igo, Michele and Facciotti, Marc and Karger, David}, booktitle = {Proceedings of the Fourth Annual ACM Conference on Learning at Scale: Poster Publication}, year={2017}, series = {L@S '17}, organization={ACM} }