Summary

The type of summary to return for each result document. IDOL Content Component automatically generates the summaries from the contents of SourceType fields.

You can use one of the following summary options:

Concept A conceptual summary of each result document. A concept summary contains sentences that are typical of the result content (these sentences can be from different parts of the result document).
Context

A conceptual summary of each result document, biased by the terms in the query Text. A context summary contains sentences that are particularly relevant to the terms in the query (these sentences can be from different parts of the result document).

To ensure that the summary contains the query terms, use the Characters parameter to specify how many characters to use in the summary. You can also use the MaxSourceCharacters configuration parameter to use more than the first 10,000 characters of a document to generate summaries.

Quick A brief summary of each result document. A quick summary contains the first few sentences of the document.
ParagraphConcept A conceptual summary of each result document which contains the paragraphs that are most typical of the result content (these paragraphs can be from different parts of the result document).
ParagraphContext A conceptual summary of each result document, biased by the terms in the query Text and FieldText. This summary contains paragraphs that are particularly relevant to the terms in the query.
RAG

A combination of a contextual summary with a vector summary. IDOL Content Component uses approximately 70% of the available characters for a contextual summary, and then appends the text corresponding to matching vectors in the result document for the remaining space. Text from matching vectors is appended only if it does not already appear in the contextual summary.

The summary uses both text and VECTOR elements from the query. If a result does not match the vector in the query, IDOL Content Component produces a Context summary for that result. If IDOL Content Component cannot generate a contextual summary for a result in the characters available, it produces a Vector summary for that result.

You can use TotalCharacters to set a total maximum number of characters for all summaries for the query. When you use the summary results in a RAG system, this option allows you to limit the total amount of text that IDOL Server generates. If you do not set TotalCharacters, IDOL Content Component allocates 750 characters for each result summary.

This option is available only for Query. If you request a RAG summary for the Suggest or SuggestOnText actions, IDOL Content Component returns a Context summary.

Vector

A summary that contains the text corresponding to the vectors that match in the result document. Multiple vectors are concatenated with an ellipsis (...). Where a vector starts or ends inside a term in the source field, the summary includes the whole term.

When a document contains multiple vectors that match the search, the summary includes all matching vectors.

NOTE: If you request a vector summary, and a document returns in the query without matching any vectors, IDOL Content Component returns a Context summary. For example, if you request a Vectorsummary and do not use a VECTOR operator, IDOL Content Component returns context summaries for the results. If the Context summary fails for any reason, IDOL Content Component returns a Quick summary.

This option is available only for Query. If you request a Vector summary for the Suggest or SuggestOnText actions, IDOL Content Component returns a Quick summary.

Off No summary.

NOTE: To ensure the quality of summaries, OpenText recommends that the documents or document sections that you generate them for are smaller than 4 KB.

Actions: Query
Suggest
SuggestOnText
Type: String
Default: Off
Example: Summary=Quick
See Also: Characters
Sentences
TotalCharacters
MaxSourceCharacters configuration parameter