  Given a query, unlike traditional IR that finds relevant documents or
entities, in this work, we focus on retrieving both entities and their
connections for insightful knowledge summarization. For example, given a query
"computer vision" on a CS literature corpus, rather than returning a list of
relevant entities like "cnn", "imagenet" and "svm", we are interested in the
connections among them, and furthermore, the evolution patterns of such
connections along particular ordinal dimensions such as time. Particularly, we
hope to provide structural knowledge relevant to the query, such as "svm" is
related to "imagenet" but not "cnn". Moreover, we aim to model the changing
trends of the connections, such as "cnn" becomes highly related to "imagenet"
after 2010, which enables the tracking of knowledge evolutions. In this work,
to facilitate such a novel insightful search system, we propose
\textsc{SetEvolve}, which is a unified framework based on nonparanomal
graphical models for evolutionary network construction from large text corpora.
Systematic experiments on synthetic data and insightful case studies on
real-world corpora demonstrate the utility of \textsc{SetEvolve}.
