Pagini recente » Atasamentele paginii rosiimici | Istoria paginii runda/parfum_de_iasomnie/clasament | Diferente pentru blog/o-problema-misto-solutie intre reviziile 3 si 2 | Diferente pentru blog/meet-in-the-middle intre reviziile 81 si 80 | Diferente pentru blog/meet-in-the-middle intre reviziile 90 si 89
Nu exista diferente intre titluri.
Diferente intre continut:
bq. Find the shortest path between two nodes nodes in a large graph which you can’t keep in memory, for example the Facebook friendship graph.
!blog/meet-in-the-middle?12fig26.gif!
The breadth first search algorithm is a standard approach for this problem. If the distance between two nodes is $k$ and the average degree in the network is $p$ BFS explores $O(p^k^)$ nodes.
!blog/meet-in-the-middle?12fig26.gif! The breadth first search algorithm is a standard approach for this problem. If the distance between two nodes is $k$ and the average degree in the network is $p$ BFS explores $O(p^k^)$ nodes.
A better solution starts from both nodes and sees when the two search spaces meet. This reduces the number of states explored to $O(p^k/2^)$.
Nu exista diferente intre securitate.
Topicul de forum nu a fost schimbat.
