Step 4: Browse Top Level Clusters
You can browse clusters of words, phrases, sentences, documents or themes (see below for our definition).
Users can drill down at a finer level of granularity.
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We want "themes" to be either facts or expressions of opinons or feelings. Themes can span a single or multiple sentences. We use a stastical definition where "themes" are informative to the reader and they can explain why the writer wrote at least one sentence.