knnnode properties

Last updated: Feb 12, 2025

knnnode properties

KNN node icon The k-Nearest Neighbor (KNN) node associates a new case with the category or value of the k objects nearest to it in the predictor space, where k is an integer. Similar cases are near each other and dissimilar cases are distant from each other.

Example

node = stream.create("knn", "My node")
# Objectives tab
node.setPropertyValue("objective", "Custom")
# Settings tab - Neighbors panel
node.setPropertyValue("automatic_k_selection", False)
node.setPropertyValue("fixed_k", 2)
node.setPropertyValue("weight_by_importance", True)
# Settings tab - Analyze panel
node.setPropertyValue("save_distances", True)

Table 1. knnnode properties
`knnnode` Properties	Values	Property description
`analysis`	`PredictTarget` `IdentifyNeighbors`
`objective`	`Balance` `Speed` `Accuracy` `Custom`
`normalize_ranges`	flag
`use_case_labels`	flag	Check box to enable next option.
`case_labels_field`	field
`identify_focal_cases`	flag	Check box to enable next option.
`focal_cases_field`	field
`automatic_k_selection`	flag
`fixed_k`	integer	Enabled only if `automatic_k_selectio` is `False`.
`minimum_k`	integer	Enabled only if `automatic_k_selectio` is `True`.
`maximum_k`	integer
`distance_computation`	`Euclidean` `CityBlock`
`weight_by_importance`	flag
`range_predictions`	`Mean` `Median`
`perform_feature_selection`	flag
`forced_entry_inputs`	[field1 ... fieldN]
`stop_on_error_ratio`	flag
`number_to_select`	integer
`minimum_change`	number
`validation_fold_assign_by_field`	flag
`number_of_folds`	integer	Enabled only if `validation_fold_assign_by_field` is `False`
`set_random_seed`	flag
`random_seed`	number
`folds_field`	field	Enabled only if `validation_fold_assign_by_field` is `True`
`all_probabilities`	flag
`save_distances`	flag
`calculate_raw_propensities`	flag
`calculate_adjusted_propensities`	flag
`adjusted_propensity_partition`	`Test` `Validation`

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