Keyword Extraction is a technique to automatically detect important and relevant words from the text. This stage can be used to extract keywords from the content of a field, store them in a target field and perform operations on them. SearchAssist applies various NLP algorithms to extract keywords from the documents.

Keyword extraction stage configuration

To configure this stage, set the following parameters appropriately. 

• Stage Type: Set this field to Keyword extraction
• Stage Name: Give a unique name to identify the stage.
• Condition: Define one or more conditions for the keyword extraction stage. SearchAssist extracts keywords only from the documents that satisfy all the conditions. 
• Source: The index field from which the keywords should be extracted. 
• Target: The field where the extracted keywords should be stored. 

Note that there can be multiple pairs of source and target fields. Also, if the target field does not already exists as an index field, it is created automatically. When a new field is added as a target field, it is automatically added as an index field while saving the configuration. You can also add the other properties for the field at that time.