Struct RandomizedResponse 

pub struct RandomizedResponse { /* private fields */ }

👎Deprecated since 2.3.0:

not differentially private (predictable xorshift64 noise, clock seed, floating-point inverse transform); use privacy::{dp_int, dp_sum, DpNoise, randomized_response, KeyedRappor}

Randomized Response for binary data

Classic technique: to report a sensitive bit b:

• With probability p, report b truthfully
• With probability 1-p, report a random bit

This provides ε-differential privacy where ε = ln((p + 0.5(1-p)) / (0.5(1-p)))

Implementations

impl RandomizedResponse

pub fn new(epsilon: f64) -> Self

Create from privacy parameter epsilon

Higher epsilon = more accuracy, less privacy

pub fn with_probability(p_true: f64, seed: u64) -> Self

Create with explicit probability and seed

pub fn privatize(&mut self, value: bool) -> bool

Privatize a boolean value

pub fn privatize_bit(&mut self, bit: u8) -> u8

Privatize a bit (0 or 1)

pub const fn p_true(&self) -> f64

Get the probability of truthful response

pub fn estimate_proportion(p_true: f64, n: u64, k: u64) -> f64

Estimate true proportion from noisy counts

Given N total responses with K positive responses, estimate the true proportion of positive values.

Panics

Panics unless 0 < p_true ≤ 1: with p_true = 0 every report is a coin flip and carries no information (the estimate was NaN).

Trait Implementations

impl Clone for RandomizedResponse

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RandomizedResponse

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

Formats the value using the given formatter.