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ActivationLayerStats

trustformers_debug::visualization::ascii_tools

Struct ActivationLayerStats 

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pub struct ActivationLayerStats {
    pub layer_name: String,
    pub mean: f32,
    pub std: f32,
    pub min: f32,
    pub max: f32,
    pub zero_fraction: f32,
    pub saturation_fraction: f32,
}
Expand description

Per-layer activation statistics computed in a single pass over the data.

Named ActivationLayerStats to distinguish it from model_diagnostics::LayerActivationStats which uses f64 fields with different names.

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§layer_name: String§mean: f32§std: f32§min: f32§max: f32§zero_fraction: f32

Fraction of values that are exactly zero.

§saturation_fraction: f32

Fraction of values whose absolute magnitude exceeds 0.99 * |max_abs|.

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impl ActivationLayerStats

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pub fn compute(layer_name: &str, activations: &[f32]) -> Self

Compute statistics from raw activation values.

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pub fn is_dead(&self, threshold: f32) -> bool

Returns true when the zero fraction exceeds the given threshold.

A layer is considered “dead” when most of its activations are zero (common symptom of a collapsed ReLU).

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pub fn to_summary_line(&self) -> String

Return a compact one-line summary suitable for logging.

Trait Implementations§

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impl Clone for ActivationLayerStats

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fn clone(&self) -> ActivationLayerStats

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for ActivationLayerStats

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

Formats the value using the given formatter. Read more

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