README.md

In datadriftR: Concept Drift Detection Methods for Stream Data

datadriftR

A system designed for detecting data drift in streaming datasets, offering a suite of statistical methods to track variations in data behavior.

Installation

install.packages("datadriftR")

remotes::install_github("ugurdar/datadriftR@main")

Examples

DDM

library(datadriftR)
# Generate a sample data stream of 1000 elements with approximately equal probabilities for 0 and 1
set.seed(123)  # Setting a seed for reproducibility
data_part1 <- sample(c(0, 1), size = 500, replace = TRUE, prob = c(0.7, 0.3))

# Introduce a change in data distribution
data_part2 <- sample(c(0, 1), size = 500, replace = TRUE, prob = c(0.3, 0.7))

# Combine the two parts
data_stream <- c(data_part1, data_part2)
# Initialize the DDM object
ddm <- DDM$new()

# Iterate through the data stream
for (i in seq_along(data_stream)) {
  ddm$add_element(data_stream[i])

  if (ddm$change_detected) {
    message(paste("Drift detected!", i))
  } else if (ddm$warning_detected) {
    # message(paste("Warning detected at position:", i))
  }
}
#> Drift detected! 560

EDDM

eddm <- EDDM$new()
for (i in 1:length(data_stream)) {
  eddm$add_element(data_stream[i])
  if (eddm$change_detected) {
    message(paste("Drift detected!",i))
  } else if (eddm$warning_detected) {
    # message(paste("Warning detected!",i))
  }
}
#> Drift detected! 403
#> Drift detected! 505
#> Drift detected! 800

HDDM-A

hddm_a <- HDDM_A$new()
for(i in seq_along(data_stream)) {
  hddm_a$add_element(data_stream[i])
  if (hddm_a$warning_detected) {
    cat(sprintf("Warning zone has been detected in data: %s - at index: %d\n", data_stream[i], i))
  }
  if (hddm_a$change_detected) {
    cat(sprintf("Change has been detected in data: %s - at index: %d\n", data_stream[i], i))
    hddm_a$reset() # Reset after detecting change
  }
}
#> Warning zone has been detected in data: 1 - at index: 511
#> Warning zone has been detected in data: 1 - at index: 512
#> Warning zone has been detected in data: 0 - at index: 513
#> Warning zone has been detected in data: 1 - at index: 514
#> Warning zone has been detected in data: 0 - at index: 515
#> Warning zone has been detected in data: 1 - at index: 516
#> Change has been detected in data: 1 - at index: 517

HDDM-W

hddm_w_instance <- HDDM_W$new()
for(i in seq_along(data_stream)) {
  hddm_w_instance$add_element(data_stream[i])
  if(hddm_w_instance$warning_detected) {
    cat(sprintf("Warning zone detected at index: %d\n", i))
  }
  if(hddm_w_instance$change_detected) {
    cat(sprintf("Concept drift detected at index: %d\n", i))
  }
}
#> Warning zone detected at index: 507
#> Warning zone detected at index: 508
#> Warning zone detected at index: 509
#> Warning zone detected at index: 510
#> Concept drift detected at index: 511

datadriftR documentation built on April 3, 2025, 6:13 p.m.