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Topic Quality Metrics Based on Distributed Word Representations

P. 1029-1032.

Automated evaluation of topic quality remains an important unsolved problem in topic modeling and represents a major obstacle for development and evaluation of new topic models. Previous attempts at the problem have been formulated as variations on the coherence and/or mutual information of top words in a topic. In this work, we propose several new metrics for evaluating topic quality with the help of distributed word representations; our experiments suggest that the new metrics are a better match for human judgement, which is the gold standard in this case, than previously developed approaches.