Files
semantica/tests/context
Mohd KaifandClaude Sonnet 4.6 e30ef6cb76 Kg Context Explainability Output Fixes (#419)
* feat(#401): temporal provenance, OWL-Time export, stable snapshot schema

- ProvenanceTracker: auto-attach recorded_at (UTC) to every new record;
  add query_recorded_between(), revision_history(), export_audit_log()
- RDFExporter.export_to_rdf: add include_temporal + time_axis params;
  emit OWL-Time triples (time:Interval, time:Instant, inXSDDateTimeStamp)
  for relationships with valid_from/valid_until; TemporalBound.OPEN
  represented via semantica:openEndedInterval instead of time:hasEnd
- TemporalVersionManager.create_snapshot: stamp format_version "1.0"
  on every snapshot; add validate_snapshot() and migrate_snapshot()
- New: semantica/kg/schemas/temporal_snapshot_v1.json (JSON Schema draft-2020)
- Tests: 28 new tests covering all acceptance criteria (451 passing, 0 failed)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* docs(#401): add changelog entry for temporal provenance & export

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat(#402): Temporal GraphRAG Integration — TemporalGraphRetriever & TemporalQueryRewriter

- Add TemporalGraphRetriever to context_retriever.py (no new file per project convention)
  - Drop-in wrapper for ContextRetriever; filters related_entities/related_relationships
    via reconstruct_at_time(); at_time=None is a true passthrough
  - Returns new RetrievedContext objects (no in-place mutation)
  - Graceful ImportError if temporal modules unavailable

- Add at_time + header_template to ContextRetriever._generate_reasoned_response()
  and query_with_reasoning()
  - Temporal header prepended to LLM context block only when at_time is set
  - Naive datetimes normalised to UTC before formatting
  - Header built with str.replace (not .format) to prevent format-string injection

- Add TemporalQueryRewriter + TemporalQueryResult to semantica/kg/
  - Regex-only (default) and LLM-assisted extraction modes
  - Resolves temporal phrases via TemporalNormalizer (deterministic, zero LLM)
  - Word-boundary guards on intent keywords; year fallback for noun-phrase dates
  - Never calls reconstruct_at_time — extraction only

- Export TemporalGraphRetriever from semantica.context
- Export TemporalQueryRewriter, TemporalQueryResult from semantica.kg

- Add 99 tests across two new test files
  - tests/context/test_temporal_retriever.py (56 tests)
  - tests/kg/test_temporal_query_rewriter.py (43 tests)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* docs(#402): add changelog entry for Temporal GraphRAG Integration

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* docs: rewrite and polish documentation site (#413)

- Rewrote index.md to match README (tagline, badges, Problem/Solution text)
- Improved getting-started, concepts, quickstart, installation, faq, use-cases, contributing, glossary, learning-more, examples, modules, architecture, cookbook, deep-dive pages: tighter prose, fixed headings/bullets, removed inconsistencies and duplicate sections
- Removed overuse of emojis from headings in integration pages (docling, snowflake)
- Fixed change_management reference page: closed unclosed JSON code block that broke the right TOC, demoted noisy sub-headings to bold text
- CSS layout: widened content area (max-width 1440px grid, left sidebar 11rem, right TOC narrowed to 11rem for broader content), tightened TOC spacing and font size, fixed word-wrap/overflow on TOC links
- Added mkdocs_local.yml for local serving without mkdocs-jupyter plugin

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat(#318): SHACL Shape Generation & Validation (Phase 1 + Phase 2)

Phase 1 — Generation:
- Add SHACLGenerator, SHACLGraph, NodeShape, PropertyShape to ontology_generator.py
- 6-stage pipeline: class index → node shapes → property shapes → inheritance propagation → quality tier → serialization
- Three output formats: Turtle, JSON-LD, N-Triples
- Three quality tiers: basic / standard (default) / strict (sh:closed)
- 3-level+ inheritance propagation, cycle-safe, no duplicate shapes
- No-domain properties attach to all node shapes
- OntologyEngine.to_shacl(), export_shacl() added to engine.py
- RDFExporter.export_shacl() added to rdf_exporter.py

Phase 2 — Runtime Validation:
- Add SHACLViolation, SHACLValidationReport, _run_pyshacl to ontology_validator.py
- OntologyEngine.validate_graph() with shacl= or ontology= arguments
- explain_violations(): rule-based plain-English explanations for all 7 SHACL constraint types
- summary(), to_dict() on SHACLValidationReport for pipeline and LLM consumers
- pyshacl/rdflib are optional deferred imports (pip install semantica[shacl])

Security & reliability fixes:
- Replace path-heuristic (len/newline) with os.path.exists() in validate_graph
- Add shacl_format parameter to validate_graph and _run_pyshacl; thread format through correctly
- Fix validate_output format alias map in to_shacl (json-ld, n-triples aliases)
- Deep-copy PropertyShape in _propagate_inheritance (dataclasses.replace) — no shared mutable refs
- Deterministic Turtle prefix output via sorted(graph.prefixes.items())
- Use full rdf:type URI in sh:ignoredProperties — no prefix dependency

Tests & docs:
- Add TestSHACLGeneration (16 tests) to test_ontology_comprehensive.py
- Add TestSHACLHierarchicalAndValidation (18 tests) to test_ontology_advanced.py
- 34 new tests, 0 failures, 0 regressions across 1111-test suite
- Update README: Unreleased section, Features, Modules table, Ontology code block, Installation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* docs(#318): add CHANGELOG entry for SHACL Shape Generation & Validation

Covers Phase 1 (generation), Phase 2 (runtime validation), all 5
security/reliability fixes, test results, and README updates.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat(#319): SKOS Vocabulary Module — namespace helpers, store helpers, OntologyEngine APIs, tests, docs

Extends the existing ontology and triplet-store stack with first-class
SKOS support without adding any new top-level packages.

### semantica/ontology/namespace_manager.py
- `get_skos_uri(local_name)` — build full skos:core# URI from local name
- `build_concept_scheme_uri(name)` — slug a human name into a stable
  ConceptScheme URI anchored at the configured base URI

### semantica/triplet_store/triplet_store.py
- `add_skos_concept(concept_uri, scheme_uri, pref_label, ...)` — asserts
  ConceptScheme + Concept triples, prefLabel, altLabel, broader, narrower,
  related, definition, notation via existing `add_triplets()` API
- `get_skos_concepts(scheme_uri=None)` — SPARQL SELECT via `execute_query()`,
  collapses multi-valued bindings into concept dicts

### semantica/ontology/engine.py
- `list_vocabularies()` — list all skos:ConceptScheme instances
- `list_concepts(scheme_uri)` — list concepts in a scheme with alt labels
- `search_concepts(query, scheme_uri=None)` — case-insensitive substring
  search over prefLabel + altLabel; sanitises user input against SPARQL injection

### tests
- `TestSKOSOntologyEngine` (14 tests) in test_ontology_comprehensive.py
- `TestSKOSTripletStore` (6 tests) in test_triplet_store.py
- All 1162 existing + new tests pass, 0 failures

### docs/reference/ontology.md
- New "SKOS Vocabulary Management" section: data-model table, import
  examples (add_skos_concept + rdflib bulk), list/search API, NamespaceManager helpers

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* docs(#319): add CHANGELOG entry for SKOS Vocabulary Module

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* test: add comprehensive test suites for Temporal Semantics (#395) and all Unreleased changelog features

- tests/test_395_temporal_semantics_comprehensive.py — 113 tests covering
  #396–#399: bitemporal model, temporal consistency validation, query
  time-range aggregation, ContextGraph.state_at(), causal chain trace_at_time()
- tests/test_unreleased_changelog_comprehensive.py — 92 tests covering all
  unreleased changelog gaps: AgentContext checkpoints (#399), audit trail /
  named tags / rollback protection (#394), snapshot schema compatibility (#393),
  ContextGraph pagination & min_weight & thread safety (#385), SKOS helpers
  (#319), SHACL quality tiers & export (#318), OllamaProvider base_url (#408),
  DatalogReasoner multi-hop & graph load (#371)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix: Context Explainability Output Fixes — regression tests and centrality fix

- Fixed CentralityCalculator._build_adjacency() to handle ContextGraph edges
  (ContextEdge dataclass objects with source_id/target_id) so degree centrality
  and related algorithms return correct results instead of empty dicts
- Added 23 regression tests in tests/context/test_context_explainability_regression.py
  covering readable decision text preservation, enriched causal/path outputs,
  PolicyEngine consistent metadata across Cypher and fallback branches,
  EntityLinker similarity payloads, and KG consumer compatibility
- Updated CHANGELOG.md [Unreleased] to reflect the bug fix and test additions

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-29 13:03:52 +05:30
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