This preview documentation is deprecated as of October 27, 2023. For GA documentation, go to the Vertex AI Search documentation.

Changes in GA:

Name: Discovery for Media is renamed to Vertex AI Search for media. Vertex AI Search includes media recommendations and media search.
Google Cloud Console page: Use the Agent Builder page in the console. The Discovery Engine console page is deprecated.
API reference: Continue to use the discoveryengine.googleapis.com service. The API remains the same but the documentation has moved. Go to the up-to-date, GA version of the Discovery Engine API reference in the Vertex AI Search documentation.
All changes: To see what else changed between preview and GA, see Switch from Discovery for Media to media recommendations in the Vertex AI Search documentation.

QueryExpansionSpec

JSON representation
Condition

Specification to determine under which conditions query expansion should occur.

JSON representation
{ "condition": enum (`Condition`), "pinUnexpandedResults": boolean }

Fields

Fields
`condition`	`enum (Condition)` The condition under which query expansion should occur. Default to `Condition.DISABLED`.
`pinUnexpandedResults`	`boolean` Whether to pin unexpanded results. If this field is set to true, unexpanded products are always at the top of the search results, followed by the expanded results.

condition

enum (Condition)

The condition under which query expansion should occur. Default to Condition.DISABLED.

pinUnexpandedResults

boolean

Whether to pin unexpanded results. If this field is set to true, unexpanded products are always at the top of the search results, followed by the expanded results.

Condition

Enum describing under which condition query expansion should occur.

Enums
`CONDITION_UNSPECIFIED`	Unspecified query expansion condition. In this case, server behavior defaults to `Condition.DISABLED`.
`DISABLED`	Disabled query expansion. Only the exact search query is used, even if `SearchResponse.total_size` is zero.
`AUTO`	Automatic query expansion built by the Search API.