Opinion observer: analyzing and comparing opinions on the Web.

@inproceedings{liu-2005-opinion, author = {Bing Liu and Minqing Hu and Junsheng Cheng}, editor = {Allan Ellis and Tatsuya Hagino}, title = {{Opinion observer: analyzing and comparing opinions on the Web}}, booktitle = {{Proceedings of the 14th international conference on World Wide Web, WWW 2005, Chiba, Japan, May 10-14, 2005}}, pages = {342--351}, publisher = {ACM}, year = {2005}, url = {https://doi.org/10.1145/1060745.1060797}, doi = {https://doi.org/10.1145/1060745.1060797} }