Editing Ai Legal Research (section)

== <span style="color: #FFFFFF;">Remembering</span> ==
* '''Case law''' — The body of law created by judicial decisions; the primary source of legal authority in common law systems.
* '''Precedent (stare decisis)''' — The legal principle that courts should follow prior decisions; the foundation of case law research.
* '''Holding''' — The legal rule or principle established by a court's decision; the binding part of a case.
* '''Dicta (obiter dicta)''' — Statements in judicial opinions not essential to the holding; not binding precedent.
* '''Citation''' — A reference to a legal authority (case, statute, regulation) in a specific format (Bluebook in the US).
* '''Headnote''' — A brief summary of a point of law in a case; West headnotes in Westlaw are a legal research staple.
* '''Shepardizing''' — Checking whether a case is still good law (not overruled or limited) using Shepard's Citations (LexisNexis).
* '''KeyCite''' — Westlaw's equivalent of Shepardizing; flags cases with adverse treatment.
* '''Semantic legal search''' — Finding cases based on meaning and concepts rather than exact keyword matches.
* '''LegalBERT''' — BERT pre-trained on legal text (case law, contracts, EU legislation); outperforms general BERT on legal NLP.
* '''Harvey''' — An enterprise legal AI built on GPT-4 for law firms; used by A&O Shearman and PwC Legal.
* '''Casetext CoCounsel''' — Legal research AI (acquired by Thomson Reuters); performs case research and memo drafting.
* '''Lexis+ AI''' — LexisNexis's AI-powered legal research assistant with citation grounding.
* '''CARA''' — Casetext's original AI that identifies cases relevant to user-uploaded briefs.
* '''Hallucination (legal AI)''' — AI generating non-existent case citations; catastrophic in legal practice.
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