When Abstractions Met Landmarks

نویسندگان

  • Carmel Domshlak
  • Michael Katz
  • Sagi Lefler
چکیده

Abstractions and landmarks are two powerful mechanisms for devising admissible heuristics forions and landmarks are two powerful mechanisms for devising admissible heuristics for classical planning. Here we aim at putting them together by integrating landmark information into abstractions, and propose a concrete realization ofions, and propose a concrete realization of this direction suitable for structural-pattern abstractions, as well as for other abstraction heuristics. Our empirical evaluation shows that landmark information can substantially improve the quality of abstraction heuristic estimates.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Abstractions += Landmarks

ions += Landmarks Carmel Domshlak and Michael Katz and Sagi Lefler Faculty of Industrial Engineering and Management Technion—Israel Institute of Technology Haifa, Israel

متن کامل

Landmarks, Critical Paths and Abstractions: What's the Difference Anyway?

Current heuristic estimators for classical domain-independent planning are usually based on one of four ideas: delete relaxations, critical paths, abstractions, and, most recently, landmarks. Previously, these different ideas for deriving heuristic functions were largely unconnected. We prove that admissible heuristics based on these ideas are in fact very closely related. Exploiting this relat...

متن کامل

Deterministic Oversubscription Planning as Heuristic Search: Abstractions and Reformulations

While in classical planning the objective is to achieve one of the equally attractive goal states at as low total action cost as possible, the objective in deterministic oversubscription planning (OSP) is to achieve an as valuable as possible subset of goals within a fixed allowance of the total action cost. Although numerous applications in various fields share the latter objective, no substan...

متن کامل

Sub-linear Algorithms for Landmark Discovery from Black Box Models

Most models of qualitative reasoning depend upon qualitative representations of quantity that make the necessary and relevant distinctions for the reasoning task at hand. Automatically generating such abstractions from numerical models has been pointed out to be a practically significant and potentially difficult problem [Struss, 2003]. Previous work, by Sachenbacher and Struss [2001], used fin...

متن کامل

Effects of Moving Landmark’s Speed on Multi-Robot Simultaneous Localization and Mapping in Dynamic Environments

Even when simultaneous localization and mapping (SLAM) solutions have been broadly developed, the vast majority of them relate to a single robot performing measurements in static environments. Researches show that the performance of SLAM algorithms deteriorates under dynamic environments. In this paper, a multi-robot simultaneous localization and mapping (MR-SLAM) system is implemented within a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010