Researcher

Hector A Geffner

Hector Geffner studies planning: how AI can represent actions, search for solutions, and learn policies. Geffner received his doctorate at UCLA in 1989. He later conducted research at IBM’s T. J. Watson Research Center and Universidad Simón Bolívar. Geffner was an ICREA researcher and Universitat Pompeu Fabra professor from 2001 through December 2022. His research during this period included heuristic planning and representations of action.

Works
284
Citations
7,939
h-index
45

Publication numbers from OpenAlex, as of 14 October 2026.

Photo of Hector A Geffner

Timeline

  1. 1989

    Doctoral training

    Geffner received his doctorate at UCLA in 1989. He later conducted research at IBM’s T. J. Watson Research Center and Universidad Simón Bolívar.

  2. 2001–2022

    Research in Barcelona

    Geffner was an ICREA researcher and Universitat Pompeu Fabra professor from 2001 through December 2022. His research during this period included heuristic planning and representations of action.

  3. 2001

    Planning as heuristic search

    Geffner and Blai Bonet co-authored Planning as Heuristic Search in Artificial Intelligence in 2001. The publication connects planning problems with search methods that use estimates to guide exploration.

  4. 2007

    Research recognition

    AAAI elected Hector A Geffner as a Fellow in 2007.

  5. 2024

    General planning policies

    Geffner and Bonet co-authored General Policies, Subgoal Structure, and Planning Width in JAIR in 2024. This shared work continues their study of representations and policies for planning.

Sources and credits

Photo: ml.rwth-aachen.de; Hector A Geffner profile photograph; creator not stated. License: Not stated by source. Source: ml.rwth-aachen.de. Cropped to a square and resized. Ask us to remove or replace this photo.

  1. Hector Geffner's Home Page (https://ml.rwth-aachen.de/~hector.geffner/) ml.rwth-aachen.de. Checked 13 October 2026.
  2. Elected AAAI Fellows — 2007 — Hector A Geffner aaai.org. Checked 13 October 2026.