Evidence Graph Mapper

Validate a compact directed evidence graph encoded as node IDs and A->B edges.

Description

A directed evidence graph connects caller-named nodes using compact edge strings.

A directed evidence graph connects caller-named nodes using compact edge strings. Syntax and connectivity differ from evidential validity.1

Validate a compact directed evidence graph encoded as node IDs and A->B edges.

When to use Evidence Graph Mapper

Use this tool to validate a compact directed evidence graph encoded as node IDs and A->B edges.

Prepare the recorded observations, ratings, assumptions or expected/observed lists requested. Choose thresholds and definitions appropriate to the planning question.

How to use Evidence Graph Mapper and understand its results

  1. Prepare the recorded observations, ratings, assumptions or expected/observed lists requested. Choose thresholds and definitions appropriate to the planning question.
  2. Enter nodes, edges using the field table and calculation rules, then run the tool.
  3. Read validEdges, invalidEdges, orphanNodes. The explanation below defines the units, signs, ordering and any flags or placeholder values.
  4. If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
Input fieldMeaningValue type; see rules belowRequirement
nodesEvidence node IDslist of stringRequired
edgesDirected edgeslist of stringRequired

Enter unique raw nonempty node IDs and A->B edge strings. Node IDs are not trimmed; edge endpoints are. Return original valid/invalid edges and orphan nodes in input order. Empty lists, repeated edges, self-loops and cycles are allowed.

valid edge=exactly two trimmed endpoints in node set

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output fieldMeaningValue type
validEdgesValid edgeslist of string
invalidEdgesInvalid edgeslist of string
orphanNodesOrphan nodeslist of string
json
{
  "input": {
    "nodes": [
      "claim",
      "witness",
      "document"
    ],
    "edges": [
      "witness->claim",
      "document->claim"
    ]
  },
  "output": {
    "validEdges": [
      "witness->claim",
      "document->claim"
    ],
    "invalidEdges": [],
    "orphanNodes": []
  }
}

Limitations and assumptions

No causal meaning, truth or graph visualization is inferred.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Five-Whys Chain: Check a five-whys chain for depth and repeated answers. For a complementary task, use Tabletop Exercise Coverage: Audit futures tabletop exercise coverage.

References

  1. Evidence Graph Mapper — tool.io

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