Struct BaselineTracker 

pub struct BaselineTracker { /* private fields */ }

Sliding window statistics tracker for anomaly detection.

Tracks multiple metrics, each with its own sliding window of values. Computes mean and standard deviation for z-score based anomaly detection.

Implementations

impl BaselineTracker

pub fn new(window_size: usize) -> Self

Create a new baseline tracker with specified window size.

pub fn update(&mut self, metric: &str, value: f64)

Update a metric with a new value.

Adds the value to the sliding window, evicting the oldest value if the window is full.

pub fn update_batch(&mut self, metric: &str, values: &[f64])

Update a metric with multiple values at once.

pub fn get_baseline(&self, metric: &str) -> Baseline

Get baseline statistics for a metric.

Returns mean=0, std=0, n=0 if the metric has no data.

pub fn z_score(&self, metric: &str, value: f64) -> f64

Calculate z-score for a value given the metric’s baseline.

Returns 0.0 if there’s insufficient data or std=0.

pub fn is_anomaly( &self, metric: &str, value: f64, sigma_threshold: f64, min_samples: usize, ) -> bool

Check if a value is an anomaly for the given metric.

Arguments

• metric - The metric name
• value - The value to check
• sigma_threshold - Number of standard deviations for anomaly (e.g., 2.0)
• min_samples - Minimum number of samples required to detect anomalies

Returns false if there’s insufficient data to make a determination.

pub fn is_high_anomaly( &self, metric: &str, value: f64, sigma_threshold: f64, min_samples: usize, ) -> bool

Check if a value is anomalously high.

pub fn is_low_anomaly( &self, metric: &str, value: f64, sigma_threshold: f64, min_samples: usize, ) -> bool

Check if a value is anomalously low.

pub fn metrics(&self) -> Vec<&str>

Get all tracked metric names.

pub fn sample_count(&self, metric: &str) -> usize

Get the number of samples for a metric.

pub fn clear_metric(&mut self, metric: &str)

Clear all data for a metric.

pub fn clear(&mut self)

Clear all tracked data.

pub fn window_size(&self) -> usize

Get the window size.

pub fn get_values(&self, metric: &str) -> Vec<f64>

Get recent values for a metric (returns a copy).

pub fn last_value(&self, metric: &str) -> Option<f64>

Get the most recent value for a metric.

pub fn percentile(&self, metric: &str, percentile: f64) -> Option<f64>

Calculate percentile for a metric.

Arguments

• metric - The metric name
• percentile - The percentile (0.0 to 1.0, e.g., 0.95 for 95th percentile)

pub fn to_signal( &self, metric: &str, value: f64, sigma_threshold: f64, ) -> Option<InteroceptiveSignal>

Convert the current state of a metric into an [InteroceptiveSignal].

• valence: negated normalized z-score (deviation = negative feeling).
• arousal: absolute z-score divided by threshold, clamped to [0, 1].

Returns None if the metric has no data.

impl BaselineTracker

pub fn analyze( &self, metric: &str, value: f64, sigma_threshold: f64, min_samples: usize, ) -> AnomalyResult

Analyze a value and return detailed anomaly result.

Trait Implementations

impl Clone for BaselineTracker

fn clone(&self) -> BaselineTracker

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BaselineTracker

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BaselineTracker

fn default() -> Self

Returns the “default value” for a type.