Problem
Parallel citations (multiple reporter references to the same case) are extracted as independent citations with no link between them.
"1 U.S. 1, 2 S. Ct. 2 (1999)"
→ Citation 1: {type: "case", text: "1 U.S. 1"}
→ Citation 2: {type: "case", text: "2 S. Ct. 2"}
Both share the year parenthetical "(1999)" but there's no indication they reference the same case.
Impact
- Double-counting citation weight in analysis
- Parentheticals (e.g., "overruling ...") get attributed to both separately
- Resolvers that know these are the same case can't deduplicate
Expected Behavior
Detect when citations appear in comma-separated sequence sharing a parenthetical, and link them:
interface FullCaseCitation {
// ... existing fields
parallelCitations?: Array<{ volume: number; reporter: string; page: number }>
}Note: The parallelCitations field already exists in our type definition but is never populated.
Detection Heuristic
Pattern: <vol> <reporter> <page>, <vol> <reporter> <page> (<year>) — citations separated only by commas with a shared trailing parenthetical.
Upstream Reference
Python eyecite #76 — open since 2021.
Problem
Parallel citations (multiple reporter references to the same case) are extracted as independent citations with no link between them.
Both share the year parenthetical "(1999)" but there's no indication they reference the same case.
Impact
Expected Behavior
Detect when citations appear in comma-separated sequence sharing a parenthetical, and link them:
Note: The
parallelCitationsfield already exists in our type definition but is never populated.Detection Heuristic
Pattern:
<vol> <reporter> <page>, <vol> <reporter> <page> (<year>)— citations separated only by commas with a shared trailing parenthetical.Upstream Reference
Python eyecite #76 — open since 2021.