A Comparison of Benchmark Task and Insight Evaluation Methods for Information Visualization.Chris North, Purvi Saraiya, Karen Duca - This study compares two different empirical research methods for evaluating information visualizations: the traditional benchmark-task method and the insight method. The results validate the insight method's ability to confirm results of the task method, but also show advantages of the insight method to illuminate additional types of tasks. Task efficiency and insight efficiency frequently correlate, but in some cases insight refutes task results.
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