Validation Infrastructure
The AnubisX Framework defines a pre-specified four-tier validation infrastructure comprising 31 acceptance criteria with thresholds defined a priori. This section documents the current validation status, experimental results, known limitations, and the forward validation roadmap.
Validation Framework
| Tier | Focus | Criteria | Key Thresholds | Current Status |
|---|---|---|---|---|
| Tier I | Foundation | 6 | 100% pass on formal consistency checks | PROPOSED |
| Tier II | Implementation | 8 | Variance reduction ≥ 30%, d' ≥ 1.50 | PROPOSED |
| Tier III | Empirical | 10 | AUC ≥ 0.95, EER ≤ 0.08, Rank-1 ≥ 0.90 | PROPOSED |
| Tier IV | Operational | 7 | FAR drift < 0.1%/month, throughput ≥ 100/s | PROPOSED |
Current Validation Status
These criteria are presented as a methodological contribution (PROPOSED). None have been formally evaluated against the pre-specified thresholds. The informal proof-of-concept experiments reported in the Evidence section provide initial feasibility indications but do not constitute formal validation.
The open-source prototype (Anubis Twitter v2.5) provides prototype-level evidence for six of ten documented claims. These claims achieve prototype-validated status, meaning they are demonstrated in code and reproducible with the provided dataset and tools.
- 372-dimensional fingerprint vectors — PROTOTYPE-VALIDATED
- Cross-user similarity distribution (μ = 0.697, σ = 0.105) — PROTOTYPE-VALIDATED
- FAISS similarity search (6–8 μs per query) — PROTOTYPE-VALIDATED
- Lexical feature discriminability across 31 users — PROTOTYPE-VALIDATED
- Egyptian content verification (144 keywords, 58 slang, 12 locations) — PROTOTYPE-VALIDATED
- Cross-platform adapter pattern — PROTOTYPE-VALIDATED
Experimental Results
| Experiment | Metric | Result |
|---|---|---|
| EXP-001 | Fingerprint dimensional consistency | 31/31 accounts produce 372-dim vectors |
| EXP-002 | Cross-user cosine similarity distribution | μ = 0.697, σ = 0.105, N = 465 pairs |
| EXP-004 | Lexical feature discriminability | Significant variation across 31 users |
| EXP-006 | FAISS search latency | 6–8 μs per query (single-threaded) |
| EXP-015 | Egyptian content verification | 144 keywords, 58 slang terms, 12 locations |
Known Limitations
- L1. All 31 criteria remain at PROPOSED status — none have been formally evaluated against thresholds.
- L2. Experimental evidence is limited to the stylometric modality; no validation exists for chrono-profiling, terminal profiling, network analysis, or media forensics.
- L3. The sample of 31 accounts from a single platform restricts generalizability across platforms, languages, and cultural contexts.
- L4. No adversarial robustness testing has been conducted; the framework's resilience to intentional obfuscation is unknown.
- L5. Algorithm ALG-023 (Confidence Calibration) at TBD status prevents operational deployment.
Validation Roadmap
- Phase 1 — Foundation Review (Current): Peer review of the axiomatic foundation, mathematical framework, and validation infrastructure specification.
- Phase 2 — Prototype Extension: Extend the open-source prototype to support additional modalities and expand the dataset beyond 31 accounts.
- Phase 3 — Tier I & II Formal Evaluation: Systematic evaluation against the 14 foundation and implementation criteria with pre-registered protocols.
- Phase 4 — Tier III Empirical Validation: Large-scale empirical studies across multiple platforms, languages, and behavioral modalities.
- Phase 5 — Tier IV Operational Readiness: Deployment testing, adversarial robustness evaluation, and confidence calibration implementation.