Episodic, Semantic, and Procedural Memory: What Should an Agent Store?
Blog post from Supermemory
Episodic, semantic, and procedural memory distinguish records of events, supported facts, and task instructions, offering useful design categories for AI systems rather than requiring separate databases. Each category should be matched to the question being answered and retain appropriate metadata, such as timestamps and sources for events, provenance and validity for facts, and approval status and applicability conditions for procedures. Information should not automatically move between categories, since an anecdote may not establish a general fact and a successful workaround may not be an approved workflow. Procedures require particularly strong controls because they influence future actions, and outdated or unapproved instructions must not override current runbooks or tool permissions. Retrieval should therefore vary by task, prioritizing source-backed event histories for incident reviews, authoritative current state for account questions, and approved, applicable procedures for workflows. Systems should test how records evolve from uncertain observations to confirmed facts and revised procedures while preserving historical context, with labeled records, source references, and approval boundaries supporting a managed implementation.
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