Module utils/networkVotingSimilarity

Fileoverview

Pairwise MEP voting-similarity helper for network OSINT.

Fetches DOCEO RCV records once and computes Jaccard-like agreement scores over the set of decisive votes (FOR / AGAINST only — abstentions excluded) that two MEPs jointly participated in.

similarity(A, B) = sharedAgreements(A, B) / sharedDecisiveVotes(A, B)

Pairs with fewer than MIN_SHARED_DECISIVE_VOTES co-participations are skipped to suppress spurious edges with poor statistical support.

The helper is intentionally narrow — it does NOT cache the matrix, since each network_analysis call may scope to a different MEP subset.

Behaviour mirrors computeCoalitionCohesionFromDoceo:

• bounded by withTimeoutAndAbort (default 5 s — larger than the 2 s cohesion guard because individual-vote XML is heavier)
• errors are silently suppressed → the caller falls back to committee edges

ISMS Policy: SC-002, AC-003, AU-002. GDPR Article 5(1)(d) — accuracy (Open-data public-figure data, decisive RCVs only).