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TOPIC ISLANDS (trademark) presents a novel approach to visualize and explore unstructured text. This technology was developed by Pacific Northwest National Laboratory.

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Document Title: Topic Islands
Category: Computer Science
Media Type: Graphics
Date of Image/Photo: March 1998
Background: The underlying technology, called TOPIC-O-GRAPHY(trademark), applies wavelet transforms to a custom digital signal constructed from words within a document. The resultant multi-resolution wavelet energy is used to analyze the characteristics of the narrative flow in the frequency domain, such as theme changes, which is then related to the overall thematic content of the text document using statistical methods. The thematic characteristics of a document can be analyzed at varying degrees of detail, ranging from section-sized text partitions to partitions consisting of a few words. Using this technology, we are developing a visualization system prototype known as TOPIC ISLANDS (trademark) to browse a document, generate fuzzy document outlines, summarize text by levels of detail and according to user interests, define meaningful subdocuments, query text content, and provide summaries of topic evolution.
URL of this page: http://picturethis.pnl.gov/picturet.nsf/by+id/SMAA-45WT2M

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