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ActivationStats

trustformers_core::quantization

Struct ActivationStats 

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pub struct ActivationStats {
    pub min_val: f32,
    pub max_val: f32,
    pub sum: f64,
    pub sum_squares: f64,
    pub count: usize,
    pub histogram: Vec<(f32, usize)>,
    pub ema_min: f32,
    pub ema_max: f32,
}
Expand description

Statistics for activation quantization calibration

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§min_val: f32

Running minimum value

§max_val: f32

Running maximum value

§sum: f64

Running sum for mean calculation

§sum_squares: f64

Running sum of squares for variance calculation

§count: usize

Number of samples observed

§histogram: Vec<(f32, usize)>

Histogram for percentile calculation

§ema_min: f32

EMA of min/max values

§ema_max: f32

EMA of max values

Implementations§

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impl ActivationStats

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pub fn new() -> Self

Create new activation statistics

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pub fn update(&mut self, tensor: &Tensor, ema_decay: f32) -> Result<()>

Update statistics with new tensor

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pub fn mean(&self) -> f32

Get mean of observed values

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pub fn variance(&self) -> f32

Get variance of observed values

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pub fn percentile(&self, p: f32) -> f32

Get percentile value from histogram

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pub fn get_quantization_params( &self, symmetric: bool, bits: u8, percentile: f32, ) -> Result<(f32, i32)>

Get quantization parameters based on statistics

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impl Clone for ActivationStats

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fn clone(&self) -> ActivationStats

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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

Formats the value using the given formatter. Read more
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impl Default for ActivationStats

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for ActivationStats

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Serialize for ActivationStats

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

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