LaTeX Expression Retrieval System Based On SFE

In this thesis,we propose a SFE feature extraction method for the expression of LaTeX format,in order to solve the problem of low accuracy and low level of display result.This method can effectively identify the expression and correlation of structural features,and is divided into three levels according to the correlation of structure characteristics for feature extraction,the extraction results for the serialized data,and retain the integrity of the expression of structural features of the original information.The LaTeX expression retrieval system based on SFE can match the structural features according to the input expressions,and then return the list of documents containing relevant structural features.Users can choose to get the matching results from the exact match to the basic feature matching and other related degree.The system uses the string pattern matching method to compare the characteristic data,and the retrieval result is accurate and fast.