Yu-Chia Cheng Chih-Wei Chang Gwo-Dong Chen Design an Interactive Agent by Multi-Empathic Strategies to Reduce Student's Negative Emotion. 330-334 2008 ICALT https://doi.org/10.1109/ICALT.2008.112 https://doi.ieeecomputersociety.org/10.1109/ICALT.2008.112 conf/icalt/2008 db/conf/icalt/icalt2008.html#ChengCC08