Add TwoStepExtraction: ordered entity extraction with pluggable NER + LLM relationships by Copilot · Pull Request #189 · FalkorDB/GraphRAG-SDK

Copilot · 2026-03-18T12:56:02Z

Implements the new composable TwoStepExtraction strategy from PR #187, replacing the old MergedExtraction/SchemaGuidedExtraction with a structured 2-step pipeline: pluggable NER (step 1) → LLM verify + relationship extraction (step 2).

New extraction strategy

TwoStepExtraction — orchestrates the 2-step pipeline with optional coreference resolution per chunk; respects schema.entities to override entity types
EntityExtractor — routes to GLiNER2 (default, local), LLM-based NER, or any custom predict_entities() model
CorefResolver / FastCorefResolver — optional pre-processing step; uses character-offset replacement (not str.replace) to correctly handle overlapping spans and possessives
_entity_utils — shared name validation, type-qualified entity ID computation, type normalization
_prompts — NER and verify+relationship prompt templates

Key correctness properties

Relationships stored with properties["rel_type"] (not "type") — required by GraphRelationship.to_fact_text() and downstream embedding
JSON parse failures log only chunk ID + exception; raw LLM response never written to logs
Longformer SDPA patch (needed for fastcoref) is restored in a try/finally-style block, not applied globally

Usage

from graphrag_sdk import TwoStepExtraction, EntityExtractor
from graphrag_sdk.ingestion.extraction_strategies.coref_resolvers import FastCorefResolver

# Default: GLiNER2 NER + LLM relationships
extractor = TwoStepExtraction(llm=llm)

# LLM-only (no local model)
extractor = TwoStepExtraction(llm=llm, entity_extractor=EntityExtractor(llm=llm))

# With coreference resolution + custom entity types
extractor = TwoStepExtraction(
    llm=llm,
    coref_resolver=FastCorefResolver(),
    entity_types=["Gene", "Protein", "Disease"],
)

Repo restructuring

Migrates from the legacy flat graphrag_sdk/ package layout to the graphrag_sdk/src/ layout introduced in the staging branch; removes the old conflicting package files.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

huggingface.co
- Triggering command: /usr/bin/python python -m pytest tests/ -v --no-header --ignore=tests/test_integration.py --ignore=tests/test_graph_store.py --ignore=tests/test_vector_store.py --ignore=tests/test_connection.py --ignore=tests/test_chunking_strategies.py -q conf�� get --global ndor/bin/bash credential.helpebash (dns block)
openaipublic.blob.core.windows.net
- Triggering command: /usr/bin/python python -m pytest tests/ -v --no-header -x --ignore=tests/test_integration.py --ignore=tests/test_graph_store.py --ignore=tests/test_vector_store.py --ignore=tests/test_connection.py git clon�� -b copilot/order-entity-extraction-process sh --depth 2 REDACTED git (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

Configure Actions setup steps to set up my environment, which run before the firewall is enabled
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Original prompt

this branch is related to the PR #187, that aims to do order in the entity extraction process. please review the PR changes

Created from VS Code.

📱 Kick off Copilot coding agent tasks wherever you are with GitHub Mobile, available on iOS and Android.

…vers Co-authored-by: galshubeli <124919062+galshubeli@users.noreply.github.com>

graphrag_sdk/src/graphrag_sdk/core/connection.py

+                    await asyncio.sleep(
+                        self.config.retry_delay * (attempt + 1)
+                    )
+        raise last_exc  # type: ignore[misc]


graphrag_sdk/src/graphrag_sdk/core/providers.py

+                        f"retrying in {delay}s: {exc}"
+                    )
+                    await asyncio.sleep(delay)
+        raise last_exc  # type: ignore[misc]


graphrag_sdk/src/graphrag_sdk/core/providers.py

+                        f"retrying in {delay}s: {exc}"
+                    )
+                    await asyncio.sleep(delay)
+        raise last_exc  # type: ignore[misc]


graphrag_sdk/src/graphrag_sdk/core/providers.py

+                        f"retrying in {delay}s: {exc}"
+                    )
+                    await asyncio.sleep(delay)
+        raise last_exc  # type: ignore[misc]


graphrag_sdk/src/graphrag_sdk/ingestion/extraction_strategies/two_step_extraction.py

+            if not is_valid_entity_name(source) or not is_valid_entity_name(target):
+                continue
+
+            weight = 1.0
