@inproceedings { KZ11a, title = {Solving problems with visual analytics: challenges and applications}, booktitle = {Proceedings of I-KNOW 2011, 11th International Conference on Knowledge Management and Knowledge Technologies}, editor = {ACM}, month = {sep}, organization = {I-KNOW 2011}, doi = {acm.org/10.1145/2024288.2024290}, year = {2011}, author = {Keim, Daniel A. and Zhang, Leishi} }