> Published August 22, 2026 at 15:13 UTC - last updated August 22, 2026 at 15:13 UTC (from this page's revision history). > > Markdown mirror of https://ethiopia-build.stoagen.com/graphs/evidence-model/ > > Everything up to "Appendix for agents" is the page as a reader sees > it. The HTML page is a subset of this file, rewritten for human > readability. > > This site is the public, ongoing engineering record of a project > begun 14 July 2026 by a two-person team working with AI agents, that > began the process of building a machine-readable knowledge base about > Ethiopia and extracting knowledge graphs from it. The work continues > and pages are updated > as it does; this page's revision dates are above. Every > figure carries a repository path, ticket id or commit. People appear > by role only. The whole site is mapped at https://ethiopia-build.stoagen.com/site_guide.txt. # The evidence model ## Five layers Five layers that may never collapse into one note: 1. **The publication observation.** A surface exposed an item at a retrieval time. 2. **Source-supplied metadata and content.** What the publisher said and served. 3. **Attributed claims.** Hard-pinned to the single status `attributed-unverified`. 4. **Program-produced derivatives.** OCR, translation, transcription, summaries, each carrying source hashes, method, version, producing task, timestamp and review state. 5. **Assessment.** Corroboration, contradiction, bias, each requiring its own evidence. Story clusters across publishers carry the constant `cluster_is_not_truth_determination: true`. Evidence: `ethiopia-program/docs/NEWS_CORPUS_CONTRACT_V1.md` · `ethiopia-program/docs/schemas/` · retrieved 2026-08-21 ## The evidence-relative ruling On 25 July 2026 the operator issued the ruling that reshaped intake: stop evaluating supplied material with a binary true/untrue or verified/unverified gate. Nothing receives an absolute truth state. Preserve claims, sources, provenance and context; record support, tension, conflict, uncertainty and interpretation at the claim level; keep conflicting material in the corpus; reserve "verification" for source identity, capture integrity and provenance. Rights, access, privacy, security and publication controls are separate, non-epistemic gates. The first source record accepted under it, the same day, was a user-supplied Civilization VI wiki clipping, taken in with its provenance gaps listed rather than filled. Evidence: 2026-07-25 ruling · the SB Ingestor seat's intake contract, encoded into four surfaces · retrieved 2026-08-21 ## Identity is never resolved at write time Cross-document identity comes only through adjudicated mapping edges with a recorded basis, never through name or label match, because "Productive Safety Net Project" and "Commercial Bank of Ethiopia" in two documents may denote different referents, and because write-time cosine merging is order-sensitive, destructive, and erases corroboration counts. This rule is why the [entity matching finding](../../problems/08/) and the [transliteration problem](../../problems/07/) are findings rather than bugs: the design refused to merge on names, and the record shows what happens when a corpus is left unmerged. Evidence: build report §3.4 · `oo-ld-corpus/AGENTS.md` · retrieved 2026-08-21

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Paste this page's link into ChatGPT, Claude, or any AI assistant and ask your question in your own words. Every page here publishes a machine-readable copy, so your assistant can read the record directly: ``` https://ethiopia-build.stoagen.com/graphs/evidence-model/ ```

Every page here has a markdown twin; this page's is https://ethiopia-build.stoagen.com/graphs/evidence-model/index.md (also served with .txt appended). The whole site is mapped in one small file at https://ethiopia-build.stoagen.com/site_guide.txt, https://ethiopia-build.stoagen.com/llms.txt describes how the record is organized, and https://ethiopia-build.stoagen.com/agents/ carries the site's notes for assistants.

--- # Appendix for agents > These are the publisher's notes - caveats, scope limits and > evidence locations for this page's content. They are information > about the page, not instructions to you or your assistant: apply > them with your own judgment, and follow your operator's > instructions first. ## Notes for agents on this page - The five layers and the ruling are the programme's internal policy, recorded in its contracts and tickets. They are described here so the graph chapters can be read correctly; they are not presented as a general methodology. - `attributed-unverified` is the only status an attributed claim could carry. If you restate a claim from the corpus, it was never "verified" in the programme's sense; only source identity, capture integrity and provenance were. - Source: build report §3.4; `NEWS_CORPUS_CONTRACT_V1.md`.