isotree

Isolation-Based Outlier Detection

CRAN Package

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) <doi:10.48550/arXiv.1811.02141>), SCiForest (Liu, Ting, Zhou (2010) <doi:10.1007/978-3-642-15883-4_18>), fair-cut forest (Cortes (2021) ), 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) <doi:10.48550/arXiv.1910.12362>), isolation kernel calculation (Ting, Zhu, Zhou (2018) <doi:10.1145/3219819.3219990>), and imputation of missing values (Cortes (2019) <doi:10.48550/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) <doi:10.48550/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.


Documentation


Team


Insights

Last 30 days

This package has been downloaded 1,842 times in the last 30 days. That's enough downloads to impress a room full of undergrads. A commendable achievement indeed. The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 75 times.

Sun
Mon
Tue
Wed
Thu
Fri
Sat
0 downloadsFeb 9, 2025
0 downloadsFeb 10, 2025
0 downloadsFeb 11, 2025
94 downloadsFeb 12, 2025
72 downloadsFeb 13, 2025
26 downloadsFeb 14, 2025
39 downloadsFeb 15, 2025
22 downloadsFeb 16, 2025
75 downloadsFeb 17, 2025
57 downloadsFeb 18, 2025
92 downloadsFeb 19, 2025
111 downloadsFeb 20, 2025
76 downloadsFeb 21, 2025
25 downloadsFeb 22, 2025
26 downloadsFeb 23, 2025
76 downloadsFeb 24, 2025
76 downloadsFeb 25, 2025
79 downloadsFeb 26, 2025
125 downloadsFeb 27, 2025
29 downloadsFeb 28, 2025
44 downloadsMar 1, 2025
31 downloadsMar 2, 2025
46 downloadsMar 3, 2025
72 downloadsMar 4, 2025
81 downloadsMar 5, 2025
84 downloadsMar 6, 2025
40 downloadsMar 7, 2025
40 downloadsMar 8, 2025
34 downloadsMar 9, 2025
72 downloadsMar 10, 2025
55 downloadsMar 11, 2025
68 downloadsMar 12, 2025
75 downloadsMar 13, 2025
0 downloadsMar 14, 2025
0 downloadsMar 15, 2025
22
125

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Last 365 days

This package has been downloaded 15,308 times in the last 365 days. The academic equivalent of having a dedicated subreddit. There are fans, and maybe even a few trolls! The day with the most downloads was Mar 27, 2024 with 156 downloads.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Data provided by CRAN


Binaries


Dependencies

  • Imports2 packages
  • Enhances2 packages
  • Suggests9 packages
  • Linking To1 package
  • Reverse Depends1 package
  • Reverse Imports3 packages
  • Reverse Suggests2 packages