Context Activity Ratio
3Repeated experimentThe ratio of cache activity (creation + read) to fresh input. Measures how much an operator invests in context vs fresh prompting.
Last updated: 2026-09-01Spec: SigRank Standard v1.0
Definition
The ratio of cache activity (creation + read) to fresh input. Measures how much an operator invests in context vs fresh prompting.
Inputs
cache_creation, cache_read, input.
Derived variables
context_activity_ratio = (cache_creation + cache_read) / max(input, 1)
Claim
Context activity ratio measures the operator's investment in building and reusing context relative to fresh input.
Test
Verify the formula for known inputs.
Observable
The numeric context activity ratio value.
Falsifier
If the ratio does not equal (cache_creation + cache_read) / max(input, 1), the implementation is wrong.
Evidence
Computed from field data. Used in workflow friction analysis.
Limitations
High ratio may indicate efficient context reuse OR may indicate excessive caching overhead.
Lineage
Upsilon workflow friction analysis. Architecture: mos2es.com/architecture.