Struct PprConfig 

pub struct PprConfig {
    pub alpha: f64,
    pub epsilon: f64,
    pub max_iterations: usize,
}

Configuration for Personalized PageRank (F-057).

PPR computes node importance relative to seed (personalization) nodes using iterative power method. Proven superior for multi-hop QA by HippoRAG (arXiv:2405.14831) and Graphiti/Zep (arXiv:2501.13956).

Fields

alpha: f64

Teleport (restart) probability α. Higher values bias toward seed nodes. Typical range: 0.10–0.25. Default: 0.15.

epsilon: f64

Convergence tolerance. Iteration stops when max delta < epsilon. Default: 1e-6.

max_iterations: usize

Maximum iterations. Default: 100.

Implementations

impl PprConfig

pub fn validate(&self) -> HirnResult<()>

Validate Personalized PageRank bounds before execution.

Trait Implementations

impl Clone for PprConfig

fn clone(&self) -> PprConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PprConfig

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

Formats the value using the given formatter.

impl Default for PprConfig

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for PprConfig

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.