The Text Link Analysis view

In the Text Link Analysis view, you can build and explore text link analysis patterns found in your text data. Text link analysis (TLA) is a pattern-matching technology that enables you to define TLA rules and compare them to actual extracted concepts and relationships found in your text.

Patterns are most useful when you are attempting to discover relationships between concepts or opinions about a particular subject. Some examples include wanting to extract opinions on products from survey data, genomic relationships from within medical research papers, or relationships between people or places from intelligence data.

Once you've extracted some TLA patterns, you can explore them in the Data or Visualization panes and even add them to categories in the Categories and Concepts view. There must be some TLA rules defined in the resource template or libraries you are using in order to extract TLA results. See the topic About Text Link Rules for more information.

If you chose to extract TLA pattern results, the results are presented in this view. If you have not chosen to do so, you will have to use the Extract button and choose the option to enable the extraction of patterns .

Figure 1. Text Link Analysis view
Text Link Analysis view

The Text Link Analysis view is organized into four panes, each of which can be hidden or shown by selecting its name from the View menu. See the topic Exploring Text Link Analysis for more information.

Type and Concept Patterns Panes

Located on the left side, the Type and Concept Pattern panes are two interconnected panes in which you can explore and select your TLA pattern results. Patterns are made up of a series of up to either six types or six concepts. The TLA pattern rule as it is defined in the linguistic resources dictates the complexity of the pattern results. See the topic About Text Link Rules for more information.

Pattern results are first grouped at the type level and then divided into concept patterns. For this reason, there are two different result panes: Type Patterns (upper left) and Concept Patterns (lower left).

  • Type Patterns. The Type Patterns pane presents extracted patterns consisting of two or more related types matching a TLA pattern rule. Type patterns are shown as <Organization> + <Location> + <Positive>, which might provide positive feedback about an organization in a specific location.
  • Concept Patterns. The Concept Patterns pane presents the extracted patterns at the concept level for all of the type pattern(s) currently selected in the Type Patterns pane above it. Concept patterns follow a structure such as hotel + paris + wonderful.

Just as with the extraction results in the Categories and Concepts view, you can review the results here. If you see any refinements you would like to make to the types and concepts that make up these patterns, you make those in the Extraction Results pane in the Categories and Concepts view, or directly in the Resource Editor, and reextract your patterns.

Visualization Pane

Located in the upper right corner of the Text Link Analysis view, this pane presents a web graph of the selected patterns as either type patterns or concept patterns. If not visible, you can access this pane from the View menu (View > Visualization). Depending on what is selected in the other panes, you can view the corresponding interactions between documents/records and the patterns.

The results are presented in multiple formats:

  • Concept Graph. This graph presents all the concepts in the selected pattern(s). The line width and node sizes (if type icons are not shown) in a concept graph show the number of global occurrences in the selected table.
  • Type Graph. This graph presents all the types in the selected pattern(s). The line width and node sizes (if type icons are not shown) in the graph show the number of global occurrences in the selected table. Nodes are represented by either a type color or by an icon.

See the topic Text Link Analysis Graphs for more information.

Data Pane

The Data pane is located in the lower right corner. This pane presents a table containing the documents or records corresponding to a selection in another area of the view. Depending on what is selected, only the corresponding text appears in the Data pane. Once you make a selection, click a Display button to populate the Data pane with the corresponding text.

If you have a selection in another pane, the corresponding documents or records show the concepts highlighted in color to help you easily identify them in the text. You can also hover your mouse over color-coded items to display a tooltip showing name of the concept under which it was extracted and the type to which it was assigned. See the topic The Data Pane for more information.