Body Required

• allow_lazy_start boolean

  Specifies whether this job can start when there is insufficient machine learning node capacity for it to be immediately assigned to a node. If set to false and a machine learning node with capacity to run the job cannot be immediately found, the API returns an error. If set to true, the API does not return an error; the job waits in the starting state until sufficient machine learning node capacity is available. This behavior is also affected by the cluster-wide xpack.ml.max_lazy_ml_nodes setting.

• analysis object Required
  Hide analysis attributes Show analysis attributes object

  • classification object
    Hide classification attributes Show classification attributes object

    • alpha number

      Advanced configuration option. Machine learning uses loss guided tree growing, which means that the decision trees grow where the regularized loss decreases most quickly. This parameter affects loss calculations by acting as a multiplier of the tree depth. Higher alpha values result in shallower trees and faster training times. By default, this value is calculated during hyperparameter optimization. It must be greater than or equal to zero.

    • dependent_variable string Required

      Defines which field of the document is to be predicted. It must match one of the fields in the index being used to train. If this field is missing from a document, then that document will not be used for training, but a prediction with the trained model will be generated for it. It is also known as continuous target variable. For classification analysis, the data type of the field must be numeric (integer, short, long, byte), categorical (ip or keyword), or boolean. There must be no more than 30 different values in this field. For regression analysis, the data type of the field must be numeric.

    • downsample_factor number

      Advanced configuration option. Controls the fraction of data that is used to compute the derivatives of the loss function for tree training. A small value results in the use of a small fraction of the data. If this value is set to be less than 1, accuracy typically improves. However, too small a value may result in poor convergence for the ensemble and so require more trees. By default, this value is calculated during hyperparameter optimization. It must be greater than zero and less than or equal to 1.

    • early_stopping_enabled boolean

      Advanced configuration option. Specifies whether the training process should finish if it is not finding any better performing models. If disabled, the training process can take significantly longer and the chance of finding a better performing model is unremarkable.

    • eta number

      Advanced configuration option. The shrinkage applied to the weights. Smaller values result in larger forests which have a better generalization error. However, larger forests cause slower training. By default, this value is calculated during hyperparameter optimization. It must be a value between 0.001 and 1.

    • eta_growth_rate_per_tree number

      Advanced configuration option. Specifies the rate at which eta increases for each new tree that is added to the forest. For example, a rate of 1.05 increases eta by 5% for each extra tree. By default, this value is calculated during hyperparameter optimization. It must be between 0.5 and 2.

    • feature_bag_fraction number

      Advanced configuration option. Defines the fraction of features that will be used when selecting a random bag for each candidate split. By default, this value is calculated during hyperparameter optimization.

    • feature_processors array[object]

      Advanced configuration option. A collection of feature preprocessors that modify one or more included fields. The analysis uses the resulting one or more features instead of the original document field. However, these features are ephemeral; they are not stored in the destination index. Multiple feature_processors entries can refer to the same document fields. Automatic categorical feature encoding still occurs for the fields that are unprocessed by a custom processor or that have categorical values. Use this property only if you want to override the automatic feature encoding of the specified fields.

      Hide feature_processors attributes Show feature_processors attributes object

      • frequency_encoding object
        Hide frequency_encoding attributes Show frequency_encoding attributes object

        • feature_name string Required
        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • frequency_map object Required

          The resulting frequency map for the field value. If the field value is missing from the frequency_map, the resulting value is 0.

      • multi_encoding object
        Hide multi_encoding attribute Show multi_encoding attribute object

        • processors array[number] Required

          The ordered array of custom processors to execute. Must be more than 1.

      • n_gram_encoding object
        Hide n_gram_encoding attributes Show n_gram_encoding attributes object

        • feature_prefix string

          The feature name prefix. Defaults to ngram__.

        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • length number

          Specifies the length of the n-gram substring. Defaults to 50. Must be greater than 0.

        • n_grams array[number] Required

          Specifies which n-grams to gather. It’s an array of integer values where the minimum value is 1, and a maximum value is 5.

        • start number

          Specifies the zero-indexed start of the n-gram substring. Negative values are allowed for encoding n-grams of string suffixes. Defaults to 0.

        • custom boolean
      • one_hot_encoding object
        Hide one_hot_encoding attributes Show one_hot_encoding attributes object

        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • hot_map string Required

          The one hot map mapping the field value with the column name.

      • target_mean_encoding object
        Hide target_mean_encoding attributes Show target_mean_encoding attributes object

        • default_value number Required

          The default value if field value is not found in the target_map.

        • feature_name string Required
        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • target_map object Required

          The field value to target mean transition map.

    • gamma number

      Advanced configuration option. Regularization parameter to prevent overfitting on the training data set. Multiplies a linear penalty associated with the size of individual trees in the forest. A high gamma value causes training to prefer small trees. A small gamma value results in larger individual trees and slower training. By default, this value is calculated during hyperparameter optimization. It must be a nonnegative value.

    • lambda number

      Advanced configuration option. Regularization parameter to prevent overfitting on the training data set. Multiplies an L2 regularization term which applies to leaf weights of the individual trees in the forest. A high lambda value causes training to favor small leaf weights. This behavior makes the prediction function smoother at the expense of potentially not being able to capture relevant relationships between the features and the dependent variable. A small lambda value results in large individual trees and slower training. By default, this value is calculated during hyperparameter optimization. It must be a nonnegative value.

    • max_optimization_rounds_per_hyperparameter number

      Advanced configuration option. A multiplier responsible for determining the maximum number of hyperparameter optimization steps in the Bayesian optimization procedure. The maximum number of steps is determined based on the number of undefined hyperparameters times the maximum optimization rounds per hyperparameter. By default, this value is calculated during hyperparameter optimization.

    • max_trees number

      Advanced configuration option. Defines the maximum number of decision trees in the forest. The maximum value is 2000. By default, this value is calculated during hyperparameter optimization.

    • num_top_feature_importance_values number

      Advanced configuration option. Specifies the maximum number of feature importance values per document to return. By default, no feature importance calculation occurs.

    • prediction_field_name string

      Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

    • randomize_seed number

      Defines the seed for the random generator that is used to pick training data. By default, it is randomly generated. Set it to a specific value to use the same training data each time you start a job (assuming other related parameters such as source and analyzed_fields are the same).

    • soft_tree_depth_limit number

      Advanced configuration option. Machine learning uses loss guided tree growing, which means that the decision trees grow where the regularized loss decreases most quickly. This soft limit combines with the soft_tree_depth_tolerance to penalize trees that exceed the specified depth; the regularized loss increases quickly beyond this depth. By default, this value is calculated during hyperparameter optimization. It must be greater than or equal to 0.

    • soft_tree_depth_tolerance number

      Advanced configuration option. This option controls how quickly the regularized loss increases when the tree depth exceeds soft_tree_depth_limit. By default, this value is calculated during hyperparameter optimization. It must be greater than or equal to 0.01.

    • training_percent string | number

      One of:

      Percentage string Percentage number
    • class_assignment_objective string
    • num_top_classes number

      Defines the number of categories for which the predicted probabilities are reported. It must be non-negative or -1. If it is -1 or greater than the total number of categories, probabilities are reported for all categories; if you have a large number of categories, there could be a significant effect on the size of your destination index. NOTE: To use the AUC ROC evaluation method, num_top_classes must be set to -1 or a value greater than or equal to the total number of categories.

  • outlier_detection object
    Hide outlier_detection attributes Show outlier_detection attributes object

    • compute_feature_influence boolean

      Specifies whether the feature influence calculation is enabled.

    • feature_influence_threshold number

      The minimum outlier score that a document needs to have in order to calculate its feature influence score. Value range: 0-1.

    • method string

      The method that outlier detection uses. Available methods are lof, ldof, distance_kth_nn, distance_knn, and ensemble. The default value is ensemble, which means that outlier detection uses an ensemble of different methods and normalises and combines their individual outlier scores to obtain the overall outlier score.

    • n_neighbors number

      Defines the value for how many nearest neighbors each method of outlier detection uses to calculate its outlier score. When the value is not set, different values are used for different ensemble members. This default behavior helps improve the diversity in the ensemble; only override it if you are confident that the value you choose is appropriate for the data set.

    • outlier_fraction number

      The proportion of the data set that is assumed to be outlying prior to outlier detection. For example, 0.05 means it is assumed that 5% of values are real outliers and 95% are inliers.

    • standardization_enabled boolean

      If true, the following operation is performed on the columns before computing outlier scores: (x_i - mean(x_i)) / sd(x_i).

  • regression object
    Hide regression attributes Show regression attributes object

    • alpha number

      Advanced configuration option. Machine learning uses loss guided tree growing, which means that the decision trees grow where the regularized loss decreases most quickly. This parameter affects loss calculations by acting as a multiplier of the tree depth. Higher alpha values result in shallower trees and faster training times. By default, this value is calculated during hyperparameter optimization. It must be greater than or equal to zero.

    • dependent_variable string Required

      Defines which field of the document is to be predicted. It must match one of the fields in the index being used to train. If this field is missing from a document, then that document will not be used for training, but a prediction with the trained model will be generated for it. It is also known as continuous target variable. For classification analysis, the data type of the field must be numeric (integer, short, long, byte), categorical (ip or keyword), or boolean. There must be no more than 30 different values in this field. For regression analysis, the data type of the field must be numeric.

    • downsample_factor number

      Advanced configuration option. Controls the fraction of data that is used to compute the derivatives of the loss function for tree training. A small value results in the use of a small fraction of the data. If this value is set to be less than 1, accuracy typically improves. However, too small a value may result in poor convergence for the ensemble and so require more trees. By default, this value is calculated during hyperparameter optimization. It must be greater than zero and less than or equal to 1.

    • early_stopping_enabled boolean

      Advanced configuration option. Specifies whether the training process should finish if it is not finding any better performing models. If disabled, the training process can take significantly longer and the chance of finding a better performing model is unremarkable.

    • eta number

      Advanced configuration option. The shrinkage applied to the weights. Smaller values result in larger forests which have a better generalization error. However, larger forests cause slower training. By default, this value is calculated during hyperparameter optimization. It must be a value between 0.001 and 1.

    • eta_growth_rate_per_tree number

      Advanced configuration option. Specifies the rate at which eta increases for each new tree that is added to the forest. For example, a rate of 1.05 increases eta by 5% for each extra tree. By default, this value is calculated during hyperparameter optimization. It must be between 0.5 and 2.

    • feature_bag_fraction number

      Advanced configuration option. Defines the fraction of features that will be used when selecting a random bag for each candidate split. By default, this value is calculated during hyperparameter optimization.

    • feature_processors array[object]

      Advanced configuration option. A collection of feature preprocessors that modify one or more included fields. The analysis uses the resulting one or more features instead of the original document field. However, these features are ephemeral; they are not stored in the destination index. Multiple feature_processors entries can refer to the same document fields. Automatic categorical feature encoding still occurs for the fields that are unprocessed by a custom processor or that have categorical values. Use this property only if you want to override the automatic feature encoding of the specified fields.

      Hide feature_processors attributes Show feature_processors attributes object

      • frequency_encoding object
        Hide frequency_encoding attributes Show frequency_encoding attributes object

        • feature_name string Required
        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • frequency_map object Required

          The resulting frequency map for the field value. If the field value is missing from the frequency_map, the resulting value is 0.

      • multi_encoding object
        Hide multi_encoding attribute Show multi_encoding attribute object

        • processors array[number] Required

          The ordered array of custom processors to execute. Must be more than 1.

      • n_gram_encoding object
        Hide n_gram_encoding attributes Show n_gram_encoding attributes object

        • feature_prefix string

          The feature name prefix. Defaults to ngram__.

        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • length number

          Specifies the length of the n-gram substring. Defaults to 50. Must be greater than 0.

        • n_grams array[number] Required

          Specifies which n-grams to gather. It’s an array of integer values where the minimum value is 1, and a maximum value is 5.

        • start number

          Specifies the zero-indexed start of the n-gram substring. Negative values are allowed for encoding n-grams of string suffixes. Defaults to 0.

        • custom boolean
      • one_hot_encoding object
        Hide one_hot_encoding attributes Show one_hot_encoding attributes object

        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • hot_map string Required

          The one hot map mapping the field value with the column name.

      • target_mean_encoding object
        Hide target_mean_encoding attributes Show target_mean_encoding attributes object

        • default_value number Required

          The default value if field value is not found in the target_map.

        • feature_name string Required
        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • target_map object Required

          The field value to target mean transition map.

    • gamma number

      Advanced configuration option. Regularization parameter to prevent overfitting on the training data set. Multiplies a linear penalty associated with the size of individual trees in the forest. A high gamma value causes training to prefer small trees. A small gamma value results in larger individual trees and slower training. By default, this value is calculated during hyperparameter optimization. It must be a nonnegative value.

    • lambda number

      Advanced configuration option. Regularization parameter to prevent overfitting on the training data set. Multiplies an L2 regularization term which applies to leaf weights of the individual trees in the forest. A high lambda value causes training to favor small leaf weights. This behavior makes the prediction function smoother at the expense of potentially not being able to capture relevant relationships between the features and the dependent variable. A small lambda value results in large individual trees and slower training. By default, this value is calculated during hyperparameter optimization. It must be a nonnegative value.

    • max_optimization_rounds_per_hyperparameter number

      Advanced configuration option. A multiplier responsible for determining the maximum number of hyperparameter optimization steps in the Bayesian optimization procedure. The maximum number of steps is determined based on the number of undefined hyperparameters times the maximum optimization rounds per hyperparameter. By default, this value is calculated during hyperparameter optimization.

    • max_trees number

      Advanced configuration option. Defines the maximum number of decision trees in the forest. The maximum value is 2000. By default, this value is calculated during hyperparameter optimization.

    • num_top_feature_importance_values number

      Advanced configuration option. Specifies the maximum number of feature importance values per document to return. By default, no feature importance calculation occurs.

    • prediction_field_name string

      Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

    • randomize_seed number

      Defines the seed for the random generator that is used to pick training data. By default, it is randomly generated. Set it to a specific value to use the same training data each time you start a job (assuming other related parameters such as source and analyzed_fields are the same).

    • soft_tree_depth_limit number

      Advanced configuration option. Machine learning uses loss guided tree growing, which means that the decision trees grow where the regularized loss decreases most quickly. This soft limit combines with the soft_tree_depth_tolerance to penalize trees that exceed the specified depth; the regularized loss increases quickly beyond this depth. By default, this value is calculated during hyperparameter optimization. It must be greater than or equal to 0.

    • soft_tree_depth_tolerance number

      Advanced configuration option. This option controls how quickly the regularized loss increases when the tree depth exceeds soft_tree_depth_limit. By default, this value is calculated during hyperparameter optimization. It must be greater than or equal to 0.01.

    • training_percent string | number

      One of:

      Percentage string Percentage number
    • loss_function string

      The loss function used during regression. Available options are mse (mean squared error), msle (mean squared logarithmic error), huber (Pseudo-Huber loss).

    • loss_function_parameter number

      A positive number that is used as a parameter to the loss_function.

• analyzed_fields object
  Hide analyzed_fields attributes Show analyzed_fields attributes object

  • includes array[string]

    An array of strings that defines the fields that will be excluded from the analysis. You do not need to add fields with unsupported data types to excludes, these fields are excluded from the analysis automatically.

  • excludes array[string]

    An array of strings that defines the fields that will be included in the analysis.

• description string

  A description of the job.

• dest object Required
  Hide dest attributes Show dest attributes object

  • index string Required
  • results_field string

    Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

• max_num_threads number

  The maximum number of threads to be used by the analysis. Using more threads may decrease the time necessary to complete the analysis at the cost of using more CPU. Note that the process may use additional threads for operational functionality other than the analysis itself.

• _meta object
  Hide _meta attribute Show _meta attribute object

  • * object Additional properties
• model_memory_limit string

  The approximate maximum amount of memory resources that are permitted for analytical processing. If your elasticsearch.yml file contains an xpack.ml.max_model_memory_limit setting, an error occurs when you try to create data frame analytics jobs that have model_memory_limit values greater than that setting.

• source object Required
  Hide source attributes Show source attributes object

  • index string | array[string] Required
  • runtime_mappings object
    Hide runtime_mappings attribute Show runtime_mappings attribute object

    • * object Additional properties
      Hide * attributes Show * attributes object

      • fields object

        For type composite

        Hide fields attribute Show fields attribute object

        • * object Additional properties
          Hide * attribute Show * attribute object

          • type string Required

            Values are boolean, composite, date, double, geo_point, geo_shape, ip, keyword, long, or lookup.

      • fetch_fields array[object]

        For type lookup

        Hide fetch_fields attributes Show fetch_fields attributes object

        • field string Required

          Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

        • format string
      • format string

        A custom format for date type runtime fields.

      • input_field string

        Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

      • target_field string

        Path to field or array of paths. Some API's support wildcards in the path to select multiple fields.

      • target_index string
      • script object
        Hide script attributes Show script attributes object

        • source string | object

          One of:

          ScriptSource string SearchRequestBody object

          Hide attributes Show attributes

          • aggregations object

            Defines the aggregations that are run as part of the search request.

          • collapse object
          • explain boolean

            If true, the request returns detailed information about score computation as part of a hit.

          • ext object

            Configuration of search extensions defined by Elasticsearch plugins.

          • from number

            The starting document offset, which must be non-negative. By default, you cannot page through more than 10,000 hits using the from and size parameters. To page through more hits, use the search_after parameter.

          • highlight
          • track_total_hits boolean | number

            Number of hits matching the query to count accurately. If true, the exact number of hits is returned at the cost of some performance. If false, the response does not include the total number of hits matching the query. Defaults to 10,000 hits.

          • indices_boost array[object]

            Boost the _score of documents from specified indices. The boost value is the factor by which scores are multiplied. A boost value greater than 1.0 increases the score. A boost value between 0 and 1.0 decreases the score.

          • docvalue_fields array[object]

            An array of wildcard (*) field patterns. The request returns doc values for field names matching these patterns in the hits.fields property of the response.

          • knn
          • min_score number

            The minimum _score for matching documents. Documents with a lower _score are not included in search results or results collected by aggregations.

          • post_filter object

            An Elasticsearch Query DSL (Domain Specific Language) object that defines a query.

          • profile boolean

            Set to true to return detailed timing information about the execution of individual components in a search request. NOTE: This is a debugging tool and adds significant overhead to search execution.

          • query object

            An Elasticsearch Query DSL (Domain Specific Language) object that defines a query.

          • rescore
          • retriever object
          • script_fields object

            Retrieve a script evaluation (based on different fields) for each hit.

          • search_after array[number | string | boolean | null]

            A field value.

          • size number

            The number of hits to return, which must not be negative. By default, you cannot page through more than 10,000 hits using the from and size parameters. To page through more hits, use the search_after property.

          • slice object
          • sort
          • _source
          • fields array[object]

            An array of wildcard (*) field patterns. The request returns values for field names matching these patterns in the hits.fields property of the response.

          • suggest object
          • terminate_after number

            The maximum number of documents to collect for each shard. If a query reaches this limit, Elasticsearch terminates the query early. Elasticsearch collects documents before sorting.

            IMPORTANT: Use with caution. Elasticsearch applies this property to each shard handling the request. When possible, let Elasticsearch perform early termination automatically. Avoid specifying this property for requests that target data streams with backing indices across multiple data tiers.

            If set to 0 (default), the query does not terminate early.

          • timeout string

            The period of time to wait for a response from each shard. If no response is received before the timeout expires, the request fails and returns an error. Defaults to no timeout.

          • track_scores boolean

            If true, calculate and return document scores, even if the scores are not used for sorting.

          • version boolean

            If true, the request returns the document version as part of a hit.

          • seq_no_primary_term boolean

            If true, the request returns sequence number and primary term of the last modification of each hit.

          • stored_fields string | array[string]
          • pit object
          • runtime_mappings object
          • stats array[string]

            The stats groups to associate with the search. Each group maintains a statistics aggregation for its associated searches. You can retrieve these stats using the indices stats API.

        • id string
        • params object

          Specifies any named parameters that are passed into the script as variables. Use parameters instead of hard-coded values to decrease compile time.

          Hide params attribute Show params attribute object

          • * object Additional properties

        • lang string

          Any of:

          ScriptLanguage string ScriptLanguage string

          Values are painless, expression, mustache, or java.
        • options object
          Hide options attribute Show options attribute object

          • * string Additional properties
      • type string Required

        Values are boolean, composite, date, double, geo_point, geo_shape, ip, keyword, long, or lookup.

  • _source object
    Hide _source attributes Show _source attributes object

    • includes array[string]

      An array of strings that defines the fields that will be excluded from the analysis. You do not need to add fields with unsupported data types to excludes, these fields are excluded from the analysis automatically.

    • excludes array[string]

      An array of strings that defines the fields that will be included in the analysis.

  • query object

    The Elasticsearch query domain-specific language (DSL). This value corresponds to the query object in an Elasticsearch search POST body. All the options that are supported by Elasticsearch can be used, as this object is passed verbatim to Elasticsearch. By default, this property has the following value: {"match_all": {}}.

    Query DSL
• headers object
• version string