Name
Abstract | ||
|---|---|---|
. We consider the following pebble motion problem. We are given a tree T with n vertices and two arrangements and of k distinct pebbles numbered 1, . . ., k on distinct vertices of the tree. Pebbles can move along edges of T provided that at any given time at most one pebble is traveling along an edge and each vertex of T contains at most one pebble. We are asked the following question:
Is arrangement reachable from ?
We present an algorithm that, on input two arrangements of k pebbles on a tree with n vertices, decides in time O(n) whether the two arrangements are reachable from one another. We also give an algorithm that, on input two reachable configurations,
returns a sequence of moves that transforms one configuration into the other.
The pebble motion problem on trees has various applications including memory management in distributed systems, robot motion
planning, and deflection routing. |
Year | DOI | Venue |
|---|---|---|
1999 | 10.1007/PL00009259 | Algorithmica |
Keywords | Field | DocType |
Key words. Tree,Permutations,Feasibility,Pebble motion,Robot motion planning. | Graph theory,Discrete mathematics,Permutation,Algorithm,Artificial intelligence,Pebble,Time complexity,Robotics,Mathematics | Journal |
Volume | Issue | ISSN |
23 | 3 | 0178-4617 |
Citations | PageRank | References |
22 | 1.69 | 4 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Vincenzo Auletta | 1 | 344 | 37.19 |
| Angelo Monti | 2 | 671 | 46.93 |
| Mimmo Parente | 3 | 169 | 20.01 |
| Pino Persiano | 4 | 277 | 21.06 |