Introduction

Beymani consists of set of Hadoop, Spark and Storm based tools for outlier and anamoly detection, which can be used for fraud detection, intrusion detection etc.

Philosophy

• Simple to use
• Input output in CSV format
• Metadata defined in simple JSON file
• Extremely configurable with tons of configuration knobs

Blogs

The following blogs of mine are good source of details of beymani

• http://pkghosh.wordpress.com/2012/01/02/fraudsters-outliers-and-big-data-2/
• http://pkghosh.wordpress.com/2012/02/18/fraudsters-are-not-model-citizens/
• http://pkghosh.wordpress.com/2012/06/18/its-a-lonely-life-for-outliers/
• http://pkghosh.wordpress.com/2012/10/18/relative-density-and-outliers/
• http://pkghosh.wordpress.com/2013/10/21/real-time-fraud-detection-with-sequence-mining/
• https://pkghosh.wordpress.com/2018/09/18/contextual-outlier-detection-with-statistical-modeling-on-spark/
• https://pkghosh.wordpress.com/2018/10/15/learning-alarm-threshold-from-user-feedback-using-decision-tree-on-spark/
• https://pkghosh.wordpress.com/2019/07/25/time-series-sequence-anomaly-detection-with-markov-chain-on-spark/
• https://pkghosh.wordpress.com/2020/09/27/time-series-change-point-detection-with-two-sample-statistic-on-spark-with-application-for-retail-sales-data/
• https://pkghosh.wordpress.com/2020/12/24/concept-drift-detection-techniques-with-python-implementation-for-supervised-machine-learning-models/
• https://pkghosh.wordpress.com/2021/01/20/customer-service-quality-monitoring-with-autoencoder-based-anomalous-case-detection/
• https://pkghosh.wordpress.com/2021/06/28/ecommerce-order-processing-system-monitoring-with-isolation-forest-based-anomaly-detection-on-spark/

Algorithms

• Univarite distribution model
• Multi variate sequence or multi gram distribution model
• Average instance Distance
• Relative instance Density
• Markov chain with sequence data
• Spectral residue for sequence data
• Quantized symbol mapping for sequence data
• Local outlier factor for multivariate data
• Instance clustering
• Sequence clustering
• Change point detection
• Isolation Forest for multivariate data
• Auto Encoder for multivariate data

Getting started

Project's resource directory has various tutorial documents for the use cases described in the blogs.

Build

For Hadoop 1

• mvn clean install

For Hadoop 2 (non yarn)

• git checkout nuovo
• mvn clean install

For Hadoop 2 (yarn)

• git checkout nuovo
• mvn clean install -P yarn

For Spark

• mvn clean install
• sbt publishLocal
• in ./spark sbt clean package

Help

Please feel free to email me at [email protected]

Contribution

Contributors are welcome. Please email me at [email protected]