Professional Search Engine Distributed Robot Design

The construction of educational resources is an important research area of the educational technology. The basic educational resource-searching engine (BERSE) provides the basic educational resources searching service through searching, classifying and indexing relevant resources in the internet. The Robot is the part of the search engines for collecting resources, and its capability directly influences the quantity and quality of resource collecting. So the design research of the Robot has become an important subordinate subject in BERSE research.The design research of the Robot includes: the research of searcher's system construction design, the searching strategies, and the resource renewal strategies, etc. As a subject combining the theories and practices, the paper's major researches and results include:(1) The designs of the distributed Robot system construction for topic-specific resource collecting.(2) The design of the "registration------running" of model, resolving the problem of dynamicenlargement and optimization grouping in the distributed systems.(3) The designs of algorithmic for optimizing partition of the resource collecting space under the dynamic resource space, dynamic system circumstance.(4) The design of the strategy to evaluate hyperlinks comprehensively based on web structure analysis, by adding the evaluation of link which resource contain the link be analyzed, professional correlation degree of the website which contain resource of the link.(5) The design of algorithm for changing periodicity renewing local resources based on the idea of "increment renew " ,combines the analysis of system loading condition.(6) The development of a distributed Robot system for BERSE.