class RecombeeApiClient::RecommendUsersToItem
Recommends users that are likely to be interested in the given item.
It is also possible to use POST HTTP method (for example in the case of a very long ReQL filter) - query parameters then become body parameters.
The returned users are sorted by predicted interest in the item (the first user being the most interested).
Attributes
Public Class Methods
* *Required arguments* - +item_id+ -> ID of the item for which the recommendations are to be generated. - +count+ -> Number of items to be recommended (N for the top-N recommendation). * *Optional arguments (given as hash optional)* - +scenario+ -> Scenario defines a particular application of recommendations. It can be, for example, "homepage", "cart", or "emailing".
You can set various settings to the [scenario](docs.recombee.com/scenarios.html) in the [Admin UI](admin.recombee.com). You can also see the performance of each scenario in the Admin UI separately, so you can check how well each application performs.
The AI that optimizes models to get the best results may optimize different scenarios separately or even use different models in each of the scenarios.
- +cascadeCreate+ -> If an item of the given *itemId* doesn't exist in the database, it creates the missing item. - +returnProperties+ -> With `returnProperties=true`, property values of the recommended users are returned along with their IDs in a JSON dictionary. The acquired property values can be used to easily display the recommended users.
Example response: “‘
{ "recommId": "039b71dc-b9cc-4645-a84f-62b841eecfce", "recomms": [ { "id": "user-17", "values": { "country": "US", "sex": "F" } }, { "id": "user-2", "values": { "country": "CAN", "sex": "M" } } ], "numberNextRecommsCalls": 0 }
“‘
- +includedProperties+ -> Allows specifying which properties should be returned when `returnProperties=true` is set. The properties are given as a comma-separated list.
Example response for ‘includedProperties=country`: “`
{ "recommId": "b2b355dd-972a-4728-9c6b-2dc229db0678", "recomms": [ { "id": "user-17", "values": { "country": "US" } }, { "id": "user-2", "values": { "country": "CAN" } } ], "numberNextRecommsCalls": 0 }
“‘
- +filter+ -> Boolean-returning [ReQL](https://docs.recombee.com/reql.html) expression, which allows you to filter recommended items based on the values of their attributes.
Filters can also be assigned to a [scenario](docs.recombee.com/scenarios.html) in the [Admin UI](admin.recombee.com).
- +booster+ -> Number-returning [ReQL](https://docs.recombee.com/reql.html) expression, which allows you to boost the recommendation rate of some items based on the values of their attributes.
Boosters can also be assigned to a [scenario](docs.recombee.com/scenarios.html) in the [Admin UI](admin.recombee.com).
- +logic+ -> Logic specifies the particular behavior of the recommendation models. You can pick tailored logic for your domain and use case.
See [this section](docs.recombee.com/recommendation_logics.html) for a list of available logics and other details.
The difference between ‘logic` and `scenario` is that `logic` specifies mainly behavior, while `scenario` specifies the place where recommendations are shown to the users.
Logic can also be set to a [scenario](docs.recombee.com/scenarios.html) in the [Admin UI](admin.recombee.com).
- +diversity+ -> **Expert option** Real number from [0.0, 1.0], which determines how mutually dissimilar the recommended items should be. The default value is 0.0, i.e., no diversification. Value 1.0 means maximal diversification. - +expertSettings+ -> Dictionary of custom options. - +returnAbGroup+ -> If there is a custom AB-testing running, return the name of the group to which the request belongs.
# File lib/recombee_api_client/api/recommend_users_to_item.rb, line 108 def initialize(item_id, count, optional = {}) @item_id = item_id @count = count optional = normalize_optional(optional) @scenario = optional['scenario'] @cascade_create = optional['cascadeCreate'] @return_properties = optional['returnProperties'] @included_properties = optional['includedProperties'] @filter = optional['filter'] @booster = optional['booster'] @logic = optional['logic'] @diversity = optional['diversity'] @expert_settings = optional['expertSettings'] @return_ab_group = optional['returnAbGroup'] @optional = optional @timeout = 50000 @ensure_https = false @optional.each do |par, _| fail UnknownOptionalParameter.new(par) unless ["scenario","cascadeCreate","returnProperties","includedProperties","filter","booster","logic","diversity","expertSettings","returnAbGroup"].include? par end end
Public Instance Methods
Values of body parameters as a Hash
# File lib/recombee_api_client/api/recommend_users_to_item.rb, line 136 def body_parameters p = Hash.new p['count'] = @count p['scenario'] = @optional['scenario'] if @optional.include? 'scenario' p['cascadeCreate'] = @optional['cascadeCreate'] if @optional.include? 'cascadeCreate' p['returnProperties'] = @optional['returnProperties'] if @optional.include? 'returnProperties' p['includedProperties'] = @optional['includedProperties'] if @optional.include? 'includedProperties' p['filter'] = @optional['filter'] if @optional.include? 'filter' p['booster'] = @optional['booster'] if @optional.include? 'booster' p['logic'] = @optional['logic'] if @optional.include? 'logic' p['diversity'] = @optional['diversity'] if @optional.include? 'diversity' p['expertSettings'] = @optional['expertSettings'] if @optional.include? 'expertSettings' p['returnAbGroup'] = @optional['returnAbGroup'] if @optional.include? 'returnAbGroup' p end
HTTP method
# File lib/recombee_api_client/api/recommend_users_to_item.rb, line 131 def method :post end
Relative path to the endpoint
# File lib/recombee_api_client/api/recommend_users_to_item.rb, line 160 def path "/{databaseId}/recomms/items/#{@item_id}/users/" end
Values of query parameters as a Hash. name of parameter => value of the parameter
# File lib/recombee_api_client/api/recommend_users_to_item.rb, line 154 def query_parameters params = {} params end