Struct GraphRAGConfig 

pub struct GraphRAGConfig {
    pub max_entities_per_doc: usize,
    pub max_relations_per_doc: usize,
    pub leiden_resolution: f64,
    pub leiden_seed: u64,
    pub max_community_levels: usize,
    pub max_context_tokens: Option<usize>,
    pub entity_matcher: Option<Box<dyn EntityMatcher>>,
}

Configuration for GraphRAG.

Fields

max_entities_per_doc: usize

Maximum number of entities to extract per document.

max_relations_per_doc: usize

Maximum number of relations to extract per document.

leiden_resolution: f64

Leiden modularity resolution γ for community detection (see community::DEFAULT_RESOLUTION). Higher values produce more, smaller communities; lower values merge more aggressively.

leiden_seed: u64

Deterministic RNG seed for the Leiden algorithm. Fixed by default so rebuilding communities over the same graph yields the same partition.

max_community_levels: usize

Maximum number of hierarchy levels, including level 0. Each higher level aggregates communities of the level below (see Community).

max_context_tokens: Option<usize>

Maximum number of tokens for context in query prompts. When set, community summaries or subgraph context is truncated to fit.

entity_matcher: Option<Box<dyn EntityMatcher>>

Custom entity matcher for local/hybrid queries. When None, uses the default KeywordMatcher.

Implementations

impl GraphRAGConfig

pub fn new() -> Self

Creates a GraphRAGConfig with default values.

pub fn with_max_entities_per_doc(self, n: usize) -> Self

Sets the maximum number of entities to extract per document.

pub fn with_max_relations_per_doc(self, n: usize) -> Self

Sets the maximum number of relations to extract per document.

pub fn with_leiden_resolution(self, resolution: f64) -> Self

Sets the Leiden modularity resolution γ.

pub fn with_leiden_seed(self, seed: u64) -> Self

Sets the deterministic RNG seed used by Leiden community detection.

pub fn with_max_community_levels(self, levels: usize) -> Self

Sets the maximum hierarchy depth (level 0 is the base partition).

pub fn with_max_context_tokens(self, tokens: usize) -> Self

Sets the maximum number of tokens for context in query prompts.

When set, community summaries (Global/Hybrid) or subgraph context (Local/Hybrid) are truncated from lowest-priority items to fit within this budget.

pub fn with_entity_matcher(self, matcher: Box<dyn EntityMatcher>) -> Self

Sets a custom entity matcher for local/hybrid queries.

When set, the matcher is used instead of the default keyword-based matching to find relevant entities.

Trait Implementations

impl Default for GraphRAGConfig

fn default() -> Self

Returns the “default value” for a type.