NetReAct: Interactive Learning for Network Summarization
Generating useful network summaries is a challenging and important problem with several applications like sensemaking, visualization, and compression. However, most current work in this space does not take human feedback into account while generating summaries. Consider an intelligence analysis scenario, where the analyst is exploring a similarity network between documents. The analyst can express her agreement/disagreement with the visualization of the network summary via iterative feedback, e.g. closing or moving documents (``nodes'') together. How can we use this feedback to improve the network summary quality? In this paper, we present NetReact, a novel interactive network summarization algorithm which supports the visualization of networks induced by text corpora to perform sensemaking. NetReact incorporates human feedback with reinforcement learning to summarize and visualize document networks. It first summarizes the network by grouping relevant nodes, and then lays them out in groups in which spatial proximity is mapped to group similarity. Using scenarios from two datasets, we show how NetReact is successful in generating high-quality summaries and visualizations that reveal hidden patterns better than other non-trivial baselines.
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