Class GoogleCloudDiscoveryengineV1alphaSearchRequest

Request message for SearchService.Search method.

Inheritance
object
GoogleCloudDiscoveryengineV1alphaSearchRequest
Implements
Inherited Members
Namespace: Google.Apis.DiscoveryEngine.v1.Data
Assembly: Google.Apis.DiscoveryEngine.v1.dll
Syntax
public class GoogleCloudDiscoveryengineV1alphaSearchRequest : IDirectResponseSchema

Properties

BoostSpec

Boost specification to boost certain documents. For more information on boosting, see Boosting

Declaration
[JsonProperty("boostSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestBoostSpec BoostSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestBoostSpec

Branch

The branch resource name, such as projects/*/locations/global/collections/default_collection/dataStores/default_data_store/branches/0. Use default_branch as the branch ID or leave this field empty, to search documents under the default branch.

Declaration
[JsonProperty("branch")]
public virtual string Branch { get; set; }
Property Value
Type Description
string

CanonicalFilter

The default filter that is applied when a user performs a search without checking any filters on the search page. The filter applied to every search request when quality improvement such as query expansion is needed. In the case a query does not have a sufficient amount of results this filter will be used to determine whether or not to enable the query expansion flow. The original filter will still be used for the query expanded search. This field is strongly recommended to achieve high search quality. For more information about filter syntax, see SearchRequest.filter.

Declaration
[JsonProperty("canonicalFilter")]
public virtual string CanonicalFilter { get; set; }
Property Value
Type Description
string

ContentSearchSpec

A specification for configuring the behavior of content search.

Declaration
[JsonProperty("contentSearchSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestContentSearchSpec ContentSearchSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestContentSearchSpec

CrowdingSpecs

Optional. Crowding specifications for improving result diversity. If multiple CrowdingSpecs are specified, crowding will be evaluated on each unique combination of the field values, and max_count will be the maximum value of max_count across all CrowdingSpecs. For example, if the first CrowdingSpec has field = "color" and max_count = 3, and the second CrowdingSpec has field = "size" and max_count = 2, then after 3 documents that share the same color AND size have been returned, subsequent ones should be removed or demoted.

Declaration
[JsonProperty("crowdingSpecs")]
public virtual IList<GoogleCloudDiscoveryengineV1alphaSearchRequestCrowdingSpec> CrowdingSpecs { get; set; }
Property Value
Type Description
IList<GoogleCloudDiscoveryengineV1alphaSearchRequestCrowdingSpec>

CustomFineTuningSpec

Custom fine tuning configs. If set, it has higher priority than the configs set in ServingConfig.custom_fine_tuning_spec.

Declaration
[JsonProperty("customFineTuningSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaCustomFineTuningSpec CustomFineTuningSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaCustomFineTuningSpec

DataStoreSpecs

Specifications that define the specific DataStores to be searched, along with configurations for those data stores. This is only considered for Engines with multiple data stores. For engines with a single data store, the specs directly under SearchRequest should be used.

Declaration
[JsonProperty("dataStoreSpecs")]
public virtual IList<GoogleCloudDiscoveryengineV1alphaSearchRequestDataStoreSpec> DataStoreSpecs { get; set; }
Property Value
Type Description
IList<GoogleCloudDiscoveryengineV1alphaSearchRequestDataStoreSpec>

DisplaySpec

Optional. Config for display feature, like match highlighting on search results.

Declaration
[JsonProperty("displaySpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestDisplaySpec DisplaySpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestDisplaySpec

ETag

The ETag of the item.

Declaration
public virtual string ETag { get; set; }
Property Value
Type Description
string

EmbeddingSpec

Uses the provided embedding to do additional semantic document retrieval. The retrieval is based on the dot product of SearchRequest.EmbeddingSpec.EmbeddingVector.vector and the document embedding that is provided in SearchRequest.EmbeddingSpec.EmbeddingVector.field_path. If SearchRequest.EmbeddingSpec.EmbeddingVector.field_path is not provided, it will use ServingConfig.EmbeddingConfig.field_path.

Declaration
[JsonProperty("embeddingSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestEmbeddingSpec EmbeddingSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestEmbeddingSpec

FacetSpecs

Facet specifications for faceted search. If empty, no facets are returned. A maximum of 100 values are allowed. Otherwise, an INVALID_ARGUMENT error is returned.

Declaration
[JsonProperty("facetSpecs")]
public virtual IList<GoogleCloudDiscoveryengineV1alphaSearchRequestFacetSpec> FacetSpecs { get; set; }
Property Value
Type Description
IList<GoogleCloudDiscoveryengineV1alphaSearchRequestFacetSpec>

Filter

The filter syntax consists of an expression language for constructing a predicate from one or more fields of the documents being filtered. Filter expression is case-sensitive. If this field is unrecognizable, an INVALID_ARGUMENT is returned. Filtering in Vertex AI Search is done by mapping the LHS filter key to a key property defined in the Vertex AI Search backend -- this mapping is defined by the customer in their schema. For example a media customer might have a field 'name' in their schema. In this case the filter would look like this: filter --&gt; name:'ANY("king kong")' For more information about filtering including syntax and filter operators, see Filter

Declaration
[JsonProperty("filter")]
public virtual string Filter { get; set; }
Property Value
Type Description
string

ImageQuery

Raw image query.

Declaration
[JsonProperty("imageQuery")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestImageQuery ImageQuery { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestImageQuery

LanguageCode

The BCP-47 language code, such as "en-US" or "sr-Latn". For more information, see Standard fields. This field helps to better interpret the query. If a value isn't specified, the query language code is automatically detected, which may not be accurate.

Declaration
[JsonProperty("languageCode")]
public virtual string LanguageCode { get; set; }
Property Value
Type Description
string

NaturalLanguageQueryUnderstandingSpec

Optional. Config for natural language query understanding capabilities, such as extracting structured field filters from the query. Refer to this documentation for more information. If naturalLanguageQueryUnderstandingSpec is not specified, no additional natural language query understanding will be done.

Declaration
[JsonProperty("naturalLanguageQueryUnderstandingSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestNaturalLanguageQueryUnderstandingSpec NaturalLanguageQueryUnderstandingSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestNaturalLanguageQueryUnderstandingSpec

Offset

A 0-indexed integer that specifies the current offset (that is, starting result location, amongst the Documents deemed by the API as relevant) in search results. This field is only considered if page_token is unset. If this field is negative, an INVALID_ARGUMENT is returned. A large offset may be capped to a reasonable threshold.

Declaration
[JsonProperty("offset")]
public virtual int? Offset { get; set; }
Property Value
Type Description
int?

OneBoxPageSize

The maximum number of results to return for OneBox. This applies to each OneBox type individually. Default number is 10.

Declaration
[JsonProperty("oneBoxPageSize")]
public virtual int? OneBoxPageSize { get; set; }
Property Value
Type Description
int?

OrderBy

The order in which documents are returned. Documents can be ordered by a field in an Document object. Leave it unset if ordered by relevance. order_by expression is case-sensitive. For more information on ordering the website search results, see Order web search results. For more information on ordering the healthcare search results, see Order healthcare search results. If this field is unrecognizable, an INVALID_ARGUMENT is returned.

Declaration
[JsonProperty("orderBy")]
public virtual string OrderBy { get; set; }
Property Value
Type Description
string

PageCategories

Optional. The categories associated with a category page. Must be set for category navigation queries to achieve good search quality. The format should be the same as UserEvent.PageInfo.page_category. This field is the equivalent of the query for browse (navigation) queries. It's used by the browse model when the query is empty. If the field is empty, it will not be used by the browse model. If the field contains more than one element, only the first element will be used. To represent full path of a category, use '&gt;' character to separate different hierarchies. If '&gt;' is part of the category name, replace it with other character(s). For example, Graphics Cards &gt; RTX&gt;4090 &gt; Founders Edition where "RTX &gt; 4090" represents one level, can be rewritten as Graphics Cards &gt; RTX_4090 &gt; Founders Edition

Declaration
[JsonProperty("pageCategories")]
public virtual IList<string> PageCategories { get; set; }
Property Value
Type Description
IList<string>

PageSize

Maximum number of Documents to return. The maximum allowed value depends on the data type. Values above the maximum value are coerced to the maximum value. * Websites with basic indexing: Default 10, Maximum 25.

  • Websites with advanced indexing: Default 25, Maximum 50. * Other: Default 50, Maximum 100. If this field is negative, an INVALID_ARGUMENT is returned.
Declaration
[JsonProperty("pageSize")]
public virtual int? PageSize { get; set; }
Property Value
Type Description
int?

PageToken

A page token received from a previous SearchService.Search call. Provide this to retrieve the subsequent page. When paginating, all other parameters provided to SearchService.Search must match the call that provided the page token. Otherwise, an INVALID_ARGUMENT error is returned.

Declaration
[JsonProperty("pageToken")]
public virtual string PageToken { get; set; }
Property Value
Type Description
string

Params__

Additional search parameters. For public website search only, supported values are: * user_country_code: string. Default empty. If set to non-empty, results are restricted or boosted based on the location provided. For example, user_country_code: "au" For available codes see Country Codes * search_type: double. Default empty. Enables non-webpage searching depending on the value. The only valid non-default value is 1, which enables image searching. For example, search_type: 1

Declaration
[JsonProperty("params")]
public virtual IDictionary<string, object> Params__ { get; set; }
Property Value
Type Description
IDictionary<string, object>

PersonalizationSpec

The specification for personalization. Notice that if both ServingConfig.personalization_spec and SearchRequest.personalization_spec are set, SearchRequest.personalization_spec overrides ServingConfig.personalization_spec.

Declaration
[JsonProperty("personalizationSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestPersonalizationSpec PersonalizationSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestPersonalizationSpec

Query

Raw search query.

Declaration
[JsonProperty("query")]
public virtual string Query { get; set; }
Property Value
Type Description
string

QueryExpansionSpec

The query expansion specification that specifies the conditions under which query expansion occurs.

Declaration
[JsonProperty("queryExpansionSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestQueryExpansionSpec QueryExpansionSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestQueryExpansionSpec

RankingExpression

Optional. The ranking expression controls the customized ranking on retrieval documents. This overrides ServingConfig.ranking_expression. The syntax and supported features depend on the ranking_expression_backend value. If ranking_expression_backend is not provided, it defaults to RANK_BY_EMBEDDING. If ranking_expression_backend is not provided or set to RANK_BY_EMBEDDING, it should be a single function or multiple functions that are joined by "+". * ranking_expression = function, { " + ", function }; Supported functions: * double * relevance_score * double * dotProduct(embedding_field_path) Function variables: * relevance_score: pre-defined keywords, used for measure relevance between query and document. * embedding_field_path: the document embedding field used with query embedding vector. * dotProduct: embedding function between embedding_field_path and query embedding vector. Example ranking expression: If document has an embedding field doc_embedding, the ranking expression could be 0.5 * relevance_score + 0.3 * dotProduct(doc_embedding). If ranking_expression_backend is set to RANK_BY_FORMULA, the following expression types (and combinations of those chained using + or * operators) are supported: * double * signal * log(signal) * exp(signal) * rr(signal, double &gt; 0) -- reciprocal rank transformation with second argument being a denominator constant. * is_nan(signal) -- returns 0 if signal is NaN, 1 otherwise. * fill_nan(signal1, signal2 | double) -- if signal1 is NaN, returns signal2 | double, else returns signal1. Here are a few examples of ranking formulas that use the supported ranking expression types: - 0.2 * semantic_similarity_score + 0.8 * log(keyword_similarity_score) -- mostly rank by the logarithm of keyword_similarity_score with slight semantic_smilarity_score adjustment. - 0.2 * exp(fill_nan(semantic_similarity_score, 0)) + 0.3 * is_nan(keyword_similarity_score) -- rank by the exponent of semantic_similarity_score filling the value with 0 if it's NaN, also add constant 0.3 adjustment to the final score if semantic_similarity_score is NaN. - 0.2 * rr(semantic_similarity_score, 16) + 0.8 * rr(keyword_similarity_score, 16) -- mostly rank by the reciprocal rank of keyword_similarity_score with slight adjustment of reciprocal rank of semantic_smilarity_score. The following signals are supported: * semantic_similarity_score: semantic similarity adjustment that is calculated using the embeddings generated by a proprietary Google model. This score determines how semantically similar a search query is to a document. * keyword_similarity_score: keyword match adjustment uses the Best Match 25 (BM25) ranking function. This score is calculated using a probabilistic model to estimate the probability that a document is relevant to a given query. * relevance_score: semantic relevance adjustment that uses a proprietary Google model to determine the meaning and intent behind a user's query in context with the content in the documents. * pctr_rank: predicted conversion rate adjustment as a rank use predicted Click-through rate (pCTR) to gauge the relevance and attractiveness of a search result from a user's perspective. A higher pCTR suggests that the result is more likely to satisfy the user's query and intent, making it a valuable signal for ranking. * freshness_rank: freshness adjustment as a rank * document_age: The time in hours elapsed since the document was last updated, a floating-point number (e.g., 0.25 means 15 minutes). * topicality_rank: topicality adjustment as a rank. Uses proprietary Google model to determine the keyword-based overlap between the query and the document. * base_rank: the default rank of the result

Declaration
[JsonProperty("rankingExpression")]
public virtual string RankingExpression { get; set; }
Property Value
Type Description
string

RankingExpressionBackend

Optional. The backend to use for the ranking expression evaluation.

Declaration
[JsonProperty("rankingExpressionBackend")]
public virtual string RankingExpressionBackend { get; set; }
Property Value
Type Description
string

RegionCode

The Unicode country/region code (CLDR) of a location, such as "US" and "419". For more information, see Standard fields. If set, then results will be boosted based on the region_code provided.

Declaration
[JsonProperty("regionCode")]
public virtual string RegionCode { get; set; }
Property Value
Type Description
string

RelevanceScoreSpec

Optional. The specification for returning the relevance score.

Declaration
[JsonProperty("relevanceScoreSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestRelevanceScoreSpec RelevanceScoreSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestRelevanceScoreSpec

RelevanceThreshold

The relevance threshold of the search results. Default to Google defined threshold, leveraging a balance of precision and recall to deliver both highly accurate results and comprehensive coverage of relevant information. This feature is not supported for healthcare search.

Declaration
[JsonProperty("relevanceThreshold")]
public virtual string RelevanceThreshold { get; set; }
Property Value
Type Description
string

SafeSearch

Whether to turn on safe search. This is only supported for website search.

Declaration
[JsonProperty("safeSearch")]
public virtual bool? SafeSearch { get; set; }
Property Value
Type Description
bool?

SearchAddonSpec

Optional. SearchAddonSpec is used to disable add-ons for search as per new repricing model. This field is only supported for search requests.

Declaration
[JsonProperty("searchAddonSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestSearchAddonSpec SearchAddonSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestSearchAddonSpec

SearchAsYouTypeSpec

Search as you type configuration. Only supported for the IndustryVertical.MEDIA vertical.

Declaration
[JsonProperty("searchAsYouTypeSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestSearchAsYouTypeSpec SearchAsYouTypeSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestSearchAsYouTypeSpec

ServingConfig

Required. The resource name of the Search serving config, such as projects/*/locations/global/collections/default_collection/engines/*/servingConfigs/default_serving_config, or projects/*/locations/global/collections/default_collection/dataStores/default_data_store/servingConfigs/default_serving_config. This field is used to identify the serving configuration name, set of models used to make the search.

Declaration
[JsonProperty("servingConfig")]
public virtual string ServingConfig { get; set; }
Property Value
Type Description
string

Session

The session resource name. Optional. Session allows users to do multi-turn /search API calls or coordination between /search API calls and /answer API calls. Example #1 (multi-turn /search API calls): Call /search API with the session ID generated in the first call. Here, the previous search query gets considered in query standing. I.e., if the first query is "How did Alphabet do in 2022?" and the current query is "How about 2023?", the current query will be interpreted as "How did Alphabet do in 2023?". Example #2 (coordination between /search API calls and /answer API calls): Call /answer API with the session ID generated in the first call. Here, the answer generation happens in the context of the search results from the first search call. Multi-turn Search feature is currently at private GA stage. Please use v1alpha or v1beta version instead before we launch this feature to public GA. Or ask for allowlisting through Google Support team.

Declaration
[JsonProperty("session")]
public virtual string Session { get; set; }
Property Value
Type Description
string

SessionSpec

Session specification. Can be used only when session is set.

Declaration
[JsonProperty("sessionSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestSessionSpec SessionSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestSessionSpec

SpellCorrectionSpec

The spell correction specification that specifies the mode under which spell correction takes effect.

Declaration
[JsonProperty("spellCorrectionSpec")]
public virtual GoogleCloudDiscoveryengineV1alphaSearchRequestSpellCorrectionSpec SpellCorrectionSpec { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaSearchRequestSpellCorrectionSpec

UseLatestData

Uses the Engine, ServingConfig and Control freshly read from the database. Note: this skips config cache and introduces dependency on databases, which could significantly increase the API latency. It should only be used for testing, but not serving end users.

Declaration
[JsonProperty("useLatestData")]
public virtual bool? UseLatestData { get; set; }
Property Value
Type Description
bool?

UserInfo

Information about the end user. Highly recommended for analytics and personalization. UserInfo.user_agent is used to deduce device_type for analytics.

Declaration
[JsonProperty("userInfo")]
public virtual GoogleCloudDiscoveryengineV1alphaUserInfo UserInfo { get; set; }
Property Value
Type Description
GoogleCloudDiscoveryengineV1alphaUserInfo

UserLabels

The user labels applied to a resource must meet the following requirements: * Each resource can have multiple labels, up to a maximum of 64. * Each label must be a key-value pair. * Keys have a minimum length of 1 character and a maximum length of 63 characters and cannot be empty. Values can be empty and have a maximum length of 63 characters. * Keys and values can contain only lowercase letters, numeric characters, underscores, and dashes. All characters must use UTF-8 encoding, and international characters are allowed. * The key portion of a label must be unique. However, you can use the same key with multiple resources. * Keys must start with a lowercase letter or international character. See Google Cloud Document for more details.

Declaration
[JsonProperty("userLabels")]
public virtual IDictionary<string, string> UserLabels { get; set; }
Property Value
Type Description
IDictionary<string, string>

UserPseudoId

Optional. A unique identifier for tracking visitors. For example, this could be implemented with an HTTP cookie, which should be able to uniquely identify a visitor on a single device. This unique identifier should not change if the visitor logs in or out of the website. This field should NOT have a fixed value such as unknown_visitor. This should be the same identifier as UserEvent.user_pseudo_id and CompleteQueryRequest.user_pseudo_id The field must be a UTF-8 encoded string with a length limit of 128 characters. Otherwise, an INVALID_ARGUMENT error is returned.

Declaration
[JsonProperty("userPseudoId")]
public virtual string UserPseudoId { get; set; }
Property Value
Type Description
string

Implements