fpmoutliers (version 0.1.0)

WFPI: WFPI - Weighted Frequent Pattern Isolation algorithm

Description

Algorithm proposed by: J. Kuchar, V. Svatek: Spotlighting Anomalies using Frequent Patterns, Proceedings of the KDD 2017 Workshop on Anomaly Detection in Finance, Halifax, Nova Scotia, Canada, PMLR, 2017.

Usage

WFPI(data, minSupport = 0.3, mlen = 0, preferredColumn = "",
  preference = 1, noCores = 1)

Arguments

data

data.frame or transactions from arules with input data

minSupport

minimum support for FPM

mlen

maximum length of frequent itemsets

preferredColumn

column name that is preferred

preference

numeric value that multiplies the score

noCores

number of cores for parallel computation

Value

model output (list) with all results including outlier scores

Examples

# NOT RUN {
library("fpmoutliers")
dataFrame <- read.csv(
     system.file("extdata", "fp-outlier-customer-data.csv", package = "fpmoutliers"))
model <- WFPI(dataFrame, minSupport = 0.001, preferredColumn="Car", preference=10)
# }