---
title: "James F. Allen"
type: "entity"
entity_kind: "person"
status: "hub"
canonical_name: "James F. Allen"
aliases: ["James Allen"]
first_seen: "2026-09-29T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["plan recognition","Allen's interval algebra","temporal reasoning","Henry Kautz","circumscription"]
seek_code_commit: "b085fa6"
---


American computer scientist best known for Allen's interval algebra (1983), a foundational formalism for representing and reasoning about temporal relations between events, and for co-authoring with [[entity-henry-kautz|Henry Kautz]] the field's foundational 1986 theory of plan recognition. He matters to this vault as the paper's second author on [[claim-kautz-allen-1986-plan-recognition-frames-as-deductive-not-abductive|"Generalized Plan Recognition"]] (AAAI-86), which frames plan recognition as deductive inference over a circumscribed action taxonomy rather than the "abductive reasoning" label later secondary sources retroactively attach to it.

Allen's interval algebra itself is a distinct mechanism from abduction and was noted as an unfollowed hook in the 1986 paper's reference list — genuinely interesting, but out of scope for this promotion; see the vault's open-noticing ledger.

## References
- [[claim-kautz-allen-1986-plan-recognition-frames-as-deductive-not-abductive]]
- Context: [[entity-henry-kautz]] · [[entity-john-mccarthy]]
- Captures: 2026-09-29-hop-kautz-allen-plan-recognition-deductive-not-abductive

## Log
- 2026-09-29: Page created. Unfamiliar name to the vault before this hop (`vault_entity: unknown`); passes the person-promotion test as co-inventor of a foundational AI theory, separately notable for interval algebra.