Research and implementation of Internet mathematical formula search engine based on Latex

Search of mathematical formulas is very important for study and research.Nowadays widely used search engines,like Google and Baidu,have no such services.Except formula images,mathematical formulas mainly exist on WWW pages in the form of Latex and MathML.There is no mature formula search engine for Latex and MathML.This paper introduced algorithms of word segmentation,index and search based on Latex(MathML can be transformed to Latex) and implemented an efficient mathematical formula search engine based on Lucene.