Researching system and method used in digital labrary

Abstract

A searching system used in digital library comprises searching controller layer with one or multiple searching controller for retransmitting query to searching controller layer and for returning back searched result to user, searching server layer with one or multiple searching server for storing core searching data and for executing said searching as well as for providing searched result to searching controller layer, indexing server layer with one on multiple indexing server for storing all indexing data and for searching out relevant indexing to obtain searching result.

Description

Technical field [0001] The present invention relates to the field of information retrieval, and more specifically, to a retrieval system and retrieval method used in a digital library, which can perform efficient retrieval and is easy to expand, and can be applied to massive data and large-scale concurrent access digital library. Background technique [0002] Currently, there are many technologies that can be used to construct digital libraries. The general digital library adopts the database method, which can quickly and easily construct a library system with a relatively small data scale. However, when the data scale grows to TB level, the index scale is very large and the retrieval speed is low, which cannot meet the requirements of the current explosive growth of information. On the other hand, when the number of concurrent user queries increases, these technologies cannot be flexibly expanded, and it is difficult to adapt to the ever-increasing user needs. [0003] Currently...

AI Technical Summary

Problems solved by technology

[0008] In order to achieve the above object, the present invention proposes a retrieval system adopted in a digital library, comprising: a retrieval controller layer comprising one or more retrieval controllers, for forwarding user queries from users to a retrieval server layer, and process the corresponding retrieval results from the retrieval server layer to return to the user; the retrieval server layer including one or more retrieval servers is used to store the core index data of the digital library, and for the user query first in the Executing a search in the core index data to obtain a search result, and if the search result cannot be obtained in the core index data, accessing the index server layer to obtain the search result, and providing the obtained search result to the search controller tier; and an index server tier comprising one or more index servers for storing all index data of the digital library, so that the corresponding index can be retrieved from said all index data through the access of the index server tier to obtain retrieval results

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