This paper discusses the process of approximate cyclic analysis of yeraly hydrologic series,which is based on the method of maximum entropy spectrum,and proposes a method of time series divided search implemented by computer software.

Fast IPv4/IPv6 Routing Lookup Algorithm Based on Bisearch-trie;

Layered-searching for scene matching;

According to Dijkstra and A* algorithms, Bi-directional A* algorithm and the hierarchical searching are used to reduce searching space and binary heap data structure is used to complete the operation of priority queue.

A fast hierarchical search matching algorithm;

All Parameter based Hierarchical Search Image Registration;

Briefly, we employ hierarchical search method to reduce the number of father block, whichwill be matched, then reduce the pixelnumber by introducingan error threshold.