# About Eduction

Eduction identifies and extracts entities from text. An entity is a word, phrase, or block of information, such as a person's name, an address, a date, or a telephone number.

Eduction includes a comprehensive set of predefined entities, for many languages and geographical locations, so that you can extract names, credit card numbers, addresses, and so on. You can also extend Eduction by defining your own entities.

You can use Eduction to:

- extract entities from documents and add them to metadata fields before you add the documents to your IDOL index. The document content might be the body of an e-mail, the content of a PDF file, or text from a web page.

  For example, you might extract company names from your document content and tag the documents with these names. Your front-end application can then use these tags to present a list of companies to your users as search filters. You can also use tags to make it quicker to retrieve results for common search terms.

- identify personally identifiable information (PII) in your data, so that you can manage this data and conform to regulation such as the General Data Protection Regulation (GDPR).

  TIP: Micro Focus provides an additional PII grammar package for this purpose. For more information, refer to the IDOL PII Package Technical Note.

- perform sentiment analysis. Sentiment analysis identifies positive and negative sentiment in text. For example, you can extract positive and negative comments from product reviews. See Sentiment Analysis.

- redact sensitive information in text or IDOL documents, so that you can conform to data protection standards and use your records for multiple purposes.

There are several ways in which you can use Eduction:

- CFS and NiFi Ingest. Eduction is commonly used to enrich documents during the ingestion process, before they are added to the IDOL index. For example, you can extract entities and tag the documents so that is easier to find documents related to a specific person, place, or subject.

  To run Eduction as part of the ingestion process, use either Connector Framework Server (CFS) or IDOL NiFi Ingest. For more information, refer to the Connector Framework Server Administration Guide, or the IDOL NiFi Ingest Getting Started Guide.

- Eduction Server. You can use the Eduction Server to extract entities, redact information, and perform sentiment analysis on plain text. See Use Eduction Server.

- Build a custom application using the Eduction SDK. Micro Focus provides Eduction SDKs for C and Java, so that you can include Eduction in your own applications. See Deploy Eduction SDK.

For more information about which method to use, see Decide Which Eduction Product to Use.

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