This paper presents ESEquivPS extension support equivalency pruning strategy, a new search space pruning strategy for mining maximal frequent itemsets to effectively reduce the search space.

Based on the distribution of fitness and characteristics of binary-coding, We improved GA by reducing and moving the search space.

It uses the concepts to restore information,partition the search space to gain the concepts and reduce the amount of the search space by ordering items,merging the equivalence subspaces and discard- ing the invalid subspaces under the precondition of the correctness of results.

In order to meet the high requirement of reliability of city power, the paper studys that the monitor way of electric circuitry based on GSM network by the model of electric circuitry GIS topology and introduces the theory of monitor and system structure, discussing the approach to establish spatial search of circuitry dominative scope based on the site of monitor spot.

This paper discusses the octree-based spatial search and intersection algorithm including cell distribution and intersection computing based on octree.

Under the framework,an efficient searching space construction through using shared HMM state was also described.

The unique expression of the routes of TSP is successfully been accomplished by means of the research on the construction of the TSP route searching space.

The paper analyzed the character of each method in constructing searching space, and compared different methods searching reliability, i.

Novel semi-supervised clustering:collaborating primary space with auxiliary space;

Semi-supervised clustering based on auxiliary space and maximum entropy;