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Approach Zero and Anserini at the CLEF-2021 ARQMath Track: Applying Substructure Search and BM25 on Operator Tree Path Tokens

Wei Zhong, Xinyu Zhang, Ji Xin, Richard Zanibbi, Jimmy Lin
2021 Conference and Labs of the Evaluation Forum  
This paper reports on substructure-aware math search system Approach Zero that is applied to our submission for ARQMath lab at CLEF 2021.  ...  We use the same path features extracted from Operator Tree (OPT) to index and retrieve math formulas in Anserini, and we interpolate Anserini results with structural results from Approach Zero.  ...  We notice that the path-only Anserini run also boosts scores, and we believe this is because paths tokens used in Anserini adds recall, whereas Approach Zero using substructure matching is good at adding  ... 
dblp:conf/clef/ZhongZXZL21 fatcat:cygw55fbpfawbatqhrtjvje4qy