Recommendations AI V1beta1 API - Class Google::Cloud::RecommendationEngine::V1beta1::PredictionService::Client (v0.4.1)

Reference documentation and code samples for the Recommendations AI V1beta1 API class Google::Cloud::RecommendationEngine::V1beta1::PredictionService::Client.

Client for the PredictionService service.

Service for making recommendation prediction.

Inherits

  • Object

Includes

Methods

.configure

def self.configure() { |config| ... } -> Client::Configuration

Configure the PredictionService Client class.

See Configuration for a description of the configuration fields.

Yields
  • (config) — Configure the Client client.
Yield Parameter
Returns
Example 
# Modify the configuration for all PredictionService clients
::Google::Cloud::RecommendationEngine::V1beta1::PredictionService::Client.configure do |config|
  config.timeout = 10.0
end

#configure

def configure() { |config| ... } -> Client::Configuration

Configure the PredictionService Client instance.

The configuration is set to the derived mode, meaning that values can be changed, but structural changes (adding new fields, etc.) are not allowed. Structural changes should be made on Client.configure.

See Configuration for a description of the configuration fields.

Yields
  • (config) — Configure the Client client.
Yield Parameter
Returns

#initialize

def initialize() { |config| ... } -> Client

Create a new PredictionService client object.

Yields
  • (config) — Configure the PredictionService client.
Yield Parameter
Returns
  • (Client) — a new instance of Client
Example 
# Create a client using the default configuration
client = ::Google::Cloud::RecommendationEngine::V1beta1::PredictionService::Client.new

# Create a client using a custom configuration
client = ::Google::Cloud::RecommendationEngine::V1beta1::PredictionService::Client.new do |config|
  config.timeout = 10.0
end

#predict

def predict(request, options = nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::RecommendationEngine::V1beta1::PredictResponse::PredictionResult>
def predict(name: nil, user_event: nil, page_size: nil, page_token: nil, filter: nil, dry_run: nil, params: nil, labels: nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::RecommendationEngine::V1beta1::PredictResponse::PredictionResult>

Makes a recommendation prediction. If using API Key based authentication, the API Key must be registered using the PredictionApiKeyRegistry service. Learn more.

Overloads 
def predict(request, options = nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::RecommendationEngine::V1beta1::PredictResponse::PredictionResult>
Pass arguments to predict via a request object, either of type Google::Cloud::RecommendationEngine::V1beta1::PredictRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::RecommendationEngine::V1beta1::PredictRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def predict(name: nil, user_event: nil, page_size: nil, page_token: nil, filter: nil, dry_run: nil, params: nil, labels: nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::RecommendationEngine::V1beta1::PredictResponse::PredictionResult>
Pass arguments to predict via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • name (::String) — Required. Full resource name of the format: {name=projects/*/locations/global/catalogs/default_catalog/eventStores/default_event_store/placements/*} The id of the recommendation engine placement. This id is used to identify the set of models that will be used to make the prediction.

    We currently support three placements with the following IDs by default:

    • shopping_cart: Predicts items frequently bought together with one or more catalog items in the same shopping session. Commonly displayed after add-to-cart events, on product detail pages, or on the shopping cart page.

    • home_page: Predicts the next product that a user will most likely engage with or purchase based on the shopping or viewing history of the specified userId or visitorId. For example - Recommendations for you.

    • product_detail: Predicts the next product that a user will most likely engage with or purchase. The prediction is based on the shopping or viewing history of the specified userId or visitorId and its relevance to a specified CatalogItem. Typically used on product detail pages. For example - More items like this.

    • recently_viewed_default: Returns up to 75 items recently viewed by the specified userId or visitorId, most recent ones first. Returns nothing if neither of them has viewed any items yet. For example - Recently viewed.

    The full list of available placements can be seen at https://console.cloud.google.com/recommendation/datafeeds/default_catalog/dashboard

  • user_event (::Google::Cloud::RecommendationEngine::V1beta1::UserEvent, ::Hash) — Required. Context about the user, what they are looking at and what action they took to trigger the predict request. Note that this user event detail won't be ingested to userEvent logs. Thus, a separate userEvent write request is required for event logging.
  • page_size (::Integer) — Optional. Maximum number of results to return per page. Set this property to the number of prediction results required. If zero, the service will choose a reasonable default.
  • page_token (::String) — Optional. The previous PredictResponse.next_page_token.
  • filter (::String) —

    Optional. Filter for restricting prediction results. Accepts values for tags and the filterOutOfStockItems flag.

    • Tag expressions. Restricts predictions to items that match all of the specified tags. Boolean operators OR and NOT are supported if the expression is enclosed in parentheses, and must be separated from the tag values by a space. -"tagA" is also supported and is equivalent to NOT "tagA". Tag values must be double quoted UTF-8 encoded strings with a size limit of 1 KiB.

    • filterOutOfStockItems. Restricts predictions to items that do not have a stockState value of OUT_OF_STOCK.

    Examples:

    • tag=("Red" OR "Blue") tag="New-Arrival" tag=(NOT "promotional")
    • filterOutOfStockItems tag=(-"promotional")
    • filterOutOfStockItems
  • dry_run (::Boolean) — Optional. Use dryRun mode for this prediction query. If set to true, a dummy model will be used that returns arbitrary catalog items. Note that the dryRun mode should only be used for testing the API, or if the model is not ready.
  • params (::Hash{::String => ::Google::Protobuf::Value, ::Hash}) —

    Optional. Additional domain specific parameters for the predictions.

    Allowed values:

    • returnCatalogItem: Boolean. If set to true, the associated catalogItem object will be returned in the PredictResponse.PredictionResult.itemMetadata object in the method response.
    • returnItemScore: Boolean. If set to true, the prediction 'score' corresponding to each returned item will be set in the metadata field in the prediction response. The given 'score' indicates the probability of an item being clicked/purchased given the user's context and history.
  • labels (::Hash{::String => ::String}) — Optional. The labels for the predict request.

    • Label keys can contain lowercase letters, digits and hyphens, must start with a letter, and must end with a letter or digit.
    • Non-zero label values can contain lowercase letters, digits and hyphens, must start with a letter, and must end with a letter or digit.
    • No more than 64 labels can be associated with a given request.

    See https://goo.gl/xmQnxf for more information on and examples of labels.

Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/recommendation_engine/v1beta1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::RecommendationEngine::V1beta1::PredictionService::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::RecommendationEngine::V1beta1::PredictRequest.new

# Call the predict method.
result = client.predict request

# The returned object is of type Gapic::PagedEnumerable. You can
# iterate over all elements by calling #each, and the enumerable
# will lazily make API calls to fetch subsequent pages. Other
# methods are also available for managing paging directly.
result.each do |response|
  # Each element is of type ::Google::Cloud::RecommendationEngine::V1beta1::PredictResponse::PredictionResult.
  p response
end