Struct smartnoise_runtime::proto::ExponentialMechanism

pub struct ExponentialMechanism {
    pub privacy_usage: Vec<PrivacyUsage, Global>,
}

ExponentialMechanism Component

Returns an element from a finite set with probability relative to its utility.

This struct represents an abstract computation. Arguments are provided via the graph. Additional options are set via the fields on this struct. The return is the result of the exponential_mechanism on the arguments.

Arguments

• utilities - Array - Respective scores for each candidate. Total number of records must match candidates.
• candidates - Array - Set from which the Exponential mechanism will return an element. Total number of records must match utilities.
• sensitivity - Array - Override the sensitivity computed by the library. Rejected unless protect_sensitivity is disabled.

Returns

• Value - Array - Element from the candidate set selected via the Exponential mechanism.

Fields

privacy_usage: Vec<PrivacyUsage, Global>

Object describing the type and amount of privacy to be used for the mechanism release. Length of privacy_usage must be exactly one.

Trait Implementations

impl Clone for ExponentialMechanism

pub fn clone(&self) -> ExponentialMechanism

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Component for ExponentialMechanism

pub fn propagate_property(
    &self,
    privacy_definition: &Option<PrivacyDefinition>,
    _public_arguments: IndexMap<IndexKey, &Value, RandomState>,
    properties: IndexMap<IndexKey, ValueProperties, RandomState>,
    node_id: u32
) -> Result<Warnable<ValueProperties>, Error>

Given properties known about private arguments, and public arguments, derive properties about the resulting data.

impl Debug for ExponentialMechanism

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

Formats the value using the given formatter.

impl Default for ExponentialMechanism

pub fn default() -> ExponentialMechanism

Returns the “default value” for a type.

impl Evaluable for ExponentialMechanism

fn evaluate(
    &self,
    privacy_definition: &Option<PrivacyDefinition>,
    arguments: NodeArguments
) -> Result<ReleaseNode>

The concrete implementation of the abstract computation that the struct represents.

impl Expandable for ExponentialMechanism

pub fn expand_component(
    &self,
    privacy_definition: &Option<PrivacyDefinition>,
    component: &Component,
    _public_arguments: &IndexMap<IndexKey, &Value, RandomState>,
    properties: &IndexMap<IndexKey, ValueProperties, RandomState>,
    component_id: u32,
    maximum_id: u32
) -> Result<ComponentExpansion, Error>

Concrete implementation for an Expandable component that returns a patch that may be applied to a computation graph.

impl Mechanism for ExponentialMechanism

pub fn get_privacy_usage(
    &self,
    privacy_definition: &PrivacyDefinition,
    release_usage: Option<&Vec<PrivacyUsage, Global>>,
    properties: &IndexMap<IndexKey, ValueProperties, RandomState>
) -> Result<Option<Vec<PrivacyUsage, Global>>, Error>

Extraction of privacy usage by the component.

impl Message for ExponentialMechanism

pub fn encode_raw<B>(&self, buf: &mut B) where
    B: BufMut, 

pub fn merge_field<B>(
    &mut self,
    tag: u32,
    wire_type: WireType,
    buf: &mut B,
    ctx: DecodeContext
) -> Result<(), DecodeError> where
    B: Buf, 

pub fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

pub fn clear(&mut self)

Clears the message, resetting all fields to their default.

pub fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError> where
    B: BufMut, 

Encodes the message to a buffer.

pub fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError> where
    B: BufMut, 

Encodes the message with a length-delimiter to a buffer.

pub fn decode<B>(buf: B) -> Result<Self, DecodeError> where
    Self: Default,
    B: Buf, 

Decodes an instance of the message from a buffer.

pub fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError> where
    Self: Default,
    B: Buf, 

Decodes a length-delimited instance of the message from the buffer.

pub fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError> where
    B: Buf, 

Decodes an instance of the message from a buffer, and merges it into self.

pub fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError> where
    B: Buf, 

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq<ExponentialMechanism> for ExponentialMechanism

pub fn eq(&self, other: &ExponentialMechanism) -> bool

This method tests for self and other values to be equal, and is used by ==.

pub fn ne(&self, other: &ExponentialMechanism) -> bool

This method tests for !=.

impl StructuralPartialEq for ExponentialMechanism