A Document Retrieval System for Math Queries

We present and analyze the results of our Math search system in the MathIR tasks in the NTCIR-12 Information Retrieval challenge. The Math search engine in the paper utilizes the co-occurrence finding technique of LDA and doc2vec to bring more contextual search. Additionally, it uses common patterns to improve the search output. To combine various scoring algorithms, it uses hybrid ranking mechanism to re-rank the documents retrieved from Elastic Search. In this paper, we evaluate the results from these algorithms and present possible future work for further improvements.