• Submission deadline: 17 May, 2021 UTC-12
  • Notification: 29 June, 2021


Fifth ICAPS Workshop on Integrated Planning, Acting, and Execution

    The proceedings are available here

    The recorded talks can be found at the Youtube Channel

    The workshop was held on August 6th 2021, the full schedule is provided below.

    Automated planners are increasingly being integrated into online acting systems. The integration may, for example, embed a domain-independent temporal planner in a manufacturing system (e.g., the Xerox printer application) or autonomous vehicles (e.g., a planetary rover or an underwater glider). The integration may resemble something more like an "acting and planning stack" where an automated planner produces an activity or task plan that is further refined by an actor before being executed by the execution platform of the actor, such as, a reactive controller (e.g., robotics). Or, the integration may be a domain-specific policy that maps states to actions (e.g., reinforcement learning). Models for planning and execution can be same or different; the planning model can define context-dependent actions schema for online (re-)planning or can just specify flexibility to be handled separately at execution time. Online learning may or may not be involved, and may include adjusting or augmenting the model, determining when to repair versus replan, learning to switch policies, etc. A specific focus of these integrations involves online deliberation and managing the execution of actions, bringing to the foreground concerns over how much computational effort planning should invest over time.

    In any of these systems, a planner generates action sequences that are eventually dispatched to an executive, yet taking action in a dynamic world rarely proceeds according to plan. When planning assumptions are challenged during execution, or some dynamic events occur, it raises a number of interesting questions about how the system should respond and which is the scope of online deliberation versus execution. Is the "acting" side of the system responsible for a response or the "planning" side? Or do the two need to cooperate and how much? When should the activity planner abandon or preempt the current goals? Should the task planner repair a plan or replan from scratch? Should the executive adjust its current policy, switch to a new one, or learn a new policy from more relevant experience?

    The fifth edition of the workshop on Integrated Planning, Acting, and Execution (IntEx) aims: (1) to provide a forum for discussing the challenges of integrating online planning, acting, and execution, and (2) to assess the potential for holding an integrated execution competitions at ICAPS. Invited topics include:

    • online planning, acting, and execution
    • position papers, benchmarks, or challenge problems for integrated execution
    • improving planning performance from execution experience
    • anytime or incremental planning
    • discussions of plan dispatching or plan executives
    • execution monitoring; comparing replanning, plan repair, re-goaling, plan merging
    • managing open worlds with closed-world planners; model learning from experience
    • determining an observation policy; policy switching; incremental policy adjustment
    • modelling, languages and knowledge engineering for interleaved planning and execution
    • architectures and application for integrated planning and execution, execution
    • monitoring, mixed-initiative on-line re-planning and execution


    We plan a one-day workshop with a focus on discussion. In contrast to the invited speaker form, we plan to host “opposing views” debates, where two members of the community will be encouraged to debate a topic relevant to the workshop in as creative a way as possible. Small-group breakouts after the debates will address questions raised by the debate so all participants gain from the experience.

    Submission Details

    Submissions may be regular papers (up to 8 pages plus references) or short position/challenge papers (up to 4 pages plus references). All papers should conform to the AAAI formatting guidelines and style (https://www.aaai.org/Publications/Templates/AuthorKit21.zip). The papers must be submitted in a PDF format via EasyChair system (https://easychair.org/conferences/?conf=intex2021) Submissions will be reviewed by at least two referees.

    We welcome existing publications from other venues that are appropriate for discussion at this workshop. Please note in the title area if this work is already accepted at another venue. If the work is under review at another venue (e.g., IJCAI-2021) please notify the organizers so we can avoid potential reviewing conflicts.

    At least one author of each accepted paper must attend the workshop in order to present the paper. Authors must register for the ICAPS main conference in order to attend the workshop. There will be no separate workshop-only registration.


    Authors Title Time Slot (in GMT)
    Amihay Elboher, Shahaf Shperberg and Solomon Eyal ShimonyMetareasoning for Interleaved Planning and Execution1310-1330
    Yaniel Carreno, Pierre Le Bras, Èric Pairet Artau, Paola Ardón Ramírez, Mike Chantler and Ron PetrickAn Integrated Framework for Remote Planning1330-1350
    Michael Saint-Guillain, Tiago Vaquero and Steve ChienLila: Optimal Dispatching in Probabilistic Temporal Networks using Monte Carlo Tree Search1350-1410
    Debate 1 (What kind of action models/modeling language are most suitable for integrated acting and planning?)1410-1430
    BREAK 11430-1500
    Tianyi Gu, Shahaf Shperberg, Wheeler Ruml, Solomon Eyal Shimony and Erez KarpasWhen to Commit to an Action in Online Planning1500-1520
    Sriram Gopalakrishnan, Utkarsh Soni, Tung Thai, Panagiotis Lymperopoulos, Matthias Scheutz and Subbarao KambhampatiIntegrating Planning, Execution and Monitoring in the presence of Open World Novelties: Case Study of an Open World Monopoly Solver1520-1540
    Daniel Wang, Joseph Russino, Connor Basich and Steve ChienAnalyzing the Efficacy of Flexible Execution, Replanning, and Plan Optimization for a Planetary Lander1540-1600
    Xiaotian Liu, Alison Paredes and Christian MuiseDo You See What I See? An Egocentric View of our Pansophical Planning Problems1600-1620
    BREAK 21620-1700
    Debate 2 (Domains where our research can be impactful; which domain properties make a domain suitable for our research?)1700-1730
    Poster Teasers (4 min each)17:30-1800
    Poster Session1800-2000

    Important dates

    • Paper submission:
      March 29, 2021
      May 17, 2021
    • Notification of acceptance/rejection: June 29, 2021
    • Camera-ready paper submissions: Week of July 19-23, 2021
    • Workshop date: August 6

    Submission link: https://easychair.org/conferences/?conf=intex2021

    Organizing Committee