Required gcc verstion 4.7 or greater. Tested on gcc version 4.9

Build command

1. clone the repository https://github.com/tadeze/osu_iforest
2. create debug folder inside the repository mkdir debug
3. change directory to debug cd debug
4. type cmake ..
5. type make
6. run the iforest inside the debug folder ./iforest

Usage

iforest.exe -h will display the available switches. Usage: iforest [options]

• -i FILE, --infile=FILE Specify path to input data file. (Required).
• -o FILE, --outfile=FILE Specify path to output results file. (Required).
• -m COLS, --metacol=COLS Specify columns to preserve as meta-data. (Separated by ',' Use '-' to specify ranges).
• -t N, --ntrees=N Specify number of trees to build. Default value is 100.
• -s S, --sampsize=S Specify subsampling rate for each tree. (Value of 0 indicates to use entire data set). Default value is 2048.
• -d MAX, --maxdepth=MAX Specify maximum depth of trees. (Value of 0 indicates no maximum). Default value is 0.
• -H, --header Toggle whether or not to expect a header input. Default value is true.
• -v, --verbose Toggle verbose ouput. Default value is false.
• -z --seed Specify integer value of random seed.
• -h, --help Print this help message and exit.
• -k --oob Toggle whether or not to use out-of-bag estimate for depth. Default value is false. If -k specified score or depths will be from oout of bag trees.

Example

1. Running iforest to inputfile.csv and skip column 1 and 8-10

iforest.exe -i inputfile.csv -o score.csv -s 512 -t 100 -m 1,8-10 2. This can also be written as

iforest.exe -iostm inputfile.csv score.csv 512 100 1,8-10

Status

Reference

@misc{dietterich2018anomaly,
    title={Anomaly Detection in the Presence of Missing Values},
    author={Thomas G. Dietterich and Tadesse Zemicheal},
    year={2018},
    eprint={1809.01605},
    archivePrefix={arXiv},
    primaryClass={cs.LG}
}