@incollection{Matsumoto21, author = {Kazuyuki Matsumoto}, title = {Utterance Emotion Estimation by Using Feature of Syntactic Pattern}, booktitle = {Information Systems}, publisher = {IntechOpen}, address = {Rijeka}, year = {2021}, editor = {Kazuyuki Matsumoto}, chapter = {4}, doi = {10.5772/intechopen.96597}, url = {https://doi.org/10.5772/intechopen.96597} }