ion in PRA* Introduction PRA* PBNF Optimal Search ■ Domains ■ APRA* ■ Grid Pathfinding ■ Sliding Tiles ■ Planning ■ Summary Suboptimal Search Conclusion Ethan Burns (UNH) Abstraction in Multicore Heuristic Search – 17 / 31 Grid Unit Four-way 5000x5000 w a l l t i m e ( s e c o n d s ) 20

This paper deenes a new approach and investigates a fundamental problem in route planners. This capability is important for robotic vehicles(Martian Rovers, etc.) and for planning oo-road military maneuvers. The emphasis throughout this paper will be on the design and analysis and hierarchical implementation of our route planner. This work was motivated by anticipation of the need to search a g...

This paper describes the VIRGIL (Virtual Meeting Archival) system which was developed to provide a simple, practical, easy-to-use method for recording, indexing and archiving large scale distributed videoconferences held over Access Grid nodes. Institutional libraries are coming under increasing pressure to support the storage, access and retrieval of such mixed-media complex digital objects in...

the power supply of remote sites and applications at minimal cost and with low emissions is an important issue when discussing future energy concepts. this paper presents modeling and optimization of a photovoltaic (pv)/wind/diesel system with batteries storage for electrification to an off-grid remote area located in rafsanjan, iran. for this location, different hybrid systems are studied and ...

The Support Vector Classification (SVC) is a powerful machine learning technique for pattern recognition purposes, whose efficiency depends significantly on its parameters selection. This paper proposes an algorithm that integrates the quadtree data structure with the grid search to select the optimal (C,) SVC parameters. The goal is to reduce computational operations and processing time from ...

A location-based service (LBS) provides information based on the location information specified in a query. Nearest-neighbor (NN) search is an important class of queries supported in LBSs. This paper studies energy-conserving air indexes for NN search in a wireless broadcast environment. Linear access requirement of wireless broadcast weakens the performance of existing search algorithms design...

We describe a pathfinding system based on Jump Point Search (JPS): a recent and very successful search strategy that performs symmetry breaking to speed up optimal pathfinding on grid maps. We first modify JPS for grid maps where corner-cutting moves are not allowed. We then describe JPS+: a new derivative search strategy that reformulates an input graph into an equivalent symmetry-reduced form...

Pathfinding on a map is a fundamental problem in many applications, including robotics and computer games. Typically a grid is superimposed over the map where each cell in the grid forms a unique state. A state-space-based search algorithm, such as A* or IDA*, is then used for finding the optimal (shortest) path. In this paper we analyze the search behavior of both A* and IDA* using different g...