isotree.deep.copy

An `isolation_forest` model object.

model

Generates a deep copy of a model object, including the C++ objects inside it.
This function is only meaningful if one intends to call a function that modifies the
internal C++ objects - currently, the only such function are <a rd-options="" href="/link/isotree.add.tree?package=isotree&version=0.5.14" data-mini-rdoc="isotree::isotree.add.tree">isotree.add.tree</a>
and <a rd-options="" href="/link/isotree.append.trees?package=isotree&version=0.5.14" data-mini-rdoc="isotree::isotree.append.trees">isotree.append.trees</a> - as otherwise R's objects follow a copy-on-write logic.

Fast and multi-threaded implementation of
isolation forest (Liu, Ting, Zhou (2008) <doi:10.1109/ICDM.2008.17>),
extended isolation forest (Hariri, Kind, Brunner (2018) <arXiv:1811.02141>),
SCiForest (Liu, Ting, Zhou (2010) <doi:10.1007/978-3-642-15883-4_18>),
fair-cut forest (Cortes (2021) <arXiv:2110:13402>),
robust random-cut forest (Guha, Mishra, Roy, Schrijvers (2016) <http://proceedings.mlr.press/v48/guha16.html>),
and customizable variations of them, for isolation-based outlier detection, clustered outlier detection,
distance or similarity approximation (Cortes (2019) <arXiv:1910.12362>),
isolation kernel calculation (Ting, Zhu, Zhou (2018) <doi:10.1145/3219819.3219990>),
and imputation of missing values (Cortes (2019) <arXiv:1911.06646>),
based on random or guided decision tree splitting, and providing different metrics for
scoring anomalies based on isolation depth or density (Cortes (2021) <arXiv:2111.11639>).
Provides simple heuristics for fitting the model to categorical columns and handling missing data,
and offers options for varying between random and guided splits, and for using different splitting criteria.

David Cortes

isotree

Isolation-Based Outlier Detection

Thibaut Goetghebuer-Planchon

David Blackman

Sebastiano Vigna

NumPy Developers

isotree.deep.copy function

Generates a deep copy of a model object, including the C++ objects inside it.
This function is only meaningful if one intends to call a function that modifies the
internal C++ objects - currently, the only such function are <a rd-options='' href='isotree.add.tree'>isotree.add.tree</a>
and <a rd-options='' href='isotree.append.trees'>isotree.append.trees</a> - as otherwise R's objects follow a copy-on-write logic.

isotree.deep.copy: Deep-Copy an Isolation Forest Model Object

Description

Usage

Arguments

Value