Extending and Tuning Heuristics for a Partial Order Causal Link Planner

Shekhar, Shashank; Khemani, Deepak

doi:10.1007/978-3-319-26832-3_9

Cited by 1 publication

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ing POCL heuristics do perform some relaxation on the current plan, namely by either relaxing the ordering constraints, the delete effects of the actions already present in the current plan, the current plan's causal links, or any combination thereof 1 (Shekhar and Khemani 2015;Younes and Simmons 2003;Nguyen and Kambhampati 2001;Bylander 1997).…”

Section: Introductionmentioning

confidence: 99%

A Closer Look at Causal Links: Complexity Results for Delete-Relaxation in Partial Order Causal Link (POCL) Planning

Bercher

2021

ICAPS

View full text Add to dashboard Cite

Partial Order Causal Link (POCL) planning follows the principle of least commitment in that it maintains only a partial order on its actions to prevent unnecessary early commitment during search. This can reduce the search space significantly by systematically representing up to an exponential number of action sequences in just a single search node. Progress on goal achievement is represented fully by this partial order and by causal links, which represent the causal relationships between these actions as well as between the initial state and goal. Plan existence for a state in classical planning thus corresponds to plan existence for a partial plan in POCL planning. Yet almost no theoretical investigations for POCL plan existence were conducted so far. While delete-relaxation makes plan existence tractable in classical planning, we show it to be NP-hard in POCL planning unless the current plan is totally ordered or causal links are almost completely ignored.

show abstract

Section: Introductionmentioning

confidence: 99%

A Closer Look at Causal Links: Complexity Results for Delete-Relaxation in Partial Order Causal Link (POCL) Planning

Bercher

2021

ICAPS

View full text Add to dashboard Cite

show abstract

Extending and Tuning Heuristics for a Partial Order Causal Link Planner

Cited by 1 publication

References 18 publications

A Closer Look at Causal Links: Complexity Results for Delete-Relaxation in Partial Order Causal Link (POCL) Planning

A Closer Look at Causal Links: Complexity Results for Delete-Relaxation in Partial Order Causal Link (POCL) Planning

Contact Info

Product

Resources

About