@conference { ESS+18, title = {LTMA: Layered Topic Matching for the Comparative Exploration, Evaluation, and Refinement of Topic Modeling Results}, booktitle = {2018 International Symposium on Big Data Visual and Immersive Analytics (BDVA)}, doi = {10.1109/BDVA.2018.8534018}, year = {2018}, author = {El-Assady, Mennatallah and Sperrle, Fabian and Sevastjanova, Rita and Sedlmair, Michael and Keim, Daniel A.} }