Preschool Multimedia Resource Search Service System Design

Along with the development of the Internet, all kinds of educational services or individuals release their own resource on preschool education. These resources are more abundant than the resource of any unique unit. It almost covers on all the resource about preschool education. On the condition of modern society, if the pre educational services can’t integrate pages on the Internet well, the development of the institution would be badly limited. At the same time, if parents can’t effectively get the pre educational resource they want, their home-pre-education can’t fully enjoy the convenience bought by informatization.This article designs a retrieval system of multi-media on pre education, mainly realizes the extraction of media from pages, analysis of text combined with media, automatic classification of pre educational media based on text and filtration of noise media in pages, providing people in pre education with the service of search from media on pre education.Firstly, the writer detail introduced the research background of the task. And based on this, the writer analyzed features of media and the destination, content and the achieving plan.Secondly, the writer in detail talked about the research status of media retrieval and inter fix technical such as theme spider、 automatic classification、 filtering clamor of pages.Thirdly, the writer introduced the construction of the system in the whole and in detail talk about the use of every part. Based on that, the writer gave necessary instruction about the design of the database.Fourthly, the writer partly introduced the two algorithms:automatic classification of media based on TFIDF and VSM(Vector Space Model) and the algorithm of filtering noise media on pre education.In the process of telling the algorithms, the writer in detail introduced very step from sorting training collection to the evaluation of the machine of classification, including the difficulties and their solutions. In the algorithm of filtering, the writer count and analysis the difference between the media combined with pre education and the media not combined with pre education, based on which, the writer summed up some characteristics about the media not combined with pre education. And then the writer designed the filtering algorithm based on rules for the noise media.After that, in order to check the real effect of the two algorithms, the writer get some media and related information, checking the effect of the two algorithms with the data from different angles. The result of the test proves that the two algorithms may get satisfying effect in the retrieval system of media on pre education.Lastly, the writer gave necessary state about the mistakes in the process of the design of the system and the place that could be improved.