Accelerating Substructure Similarity Search for Formula Retrieval
Accelerating Substructure Similarity Search for Formula Retrieval
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DOI:
10.1007/978-3-030-45439-5_47
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发表时间:
2020-03-17
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影响因子:
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通讯作者:
Zanibbi R
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文献类型:
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作者:
Zhong W;Rohatgi S;Wu J;Giles CL;Zanibbi R
Formula retrieval systems using substructure matching are effective, but suffer from slow retrieval times caused by the complexity of structure matching. We present a specialized inverted index and rank-safe dynamic pruning algorithm for faster substructure retrieval. Formulas are indexed from their Operator Tree (OPT) representations. Our model is evaluated using the NTCIR-12 Wikipedia Formula Browsing Task and a new formula corpus produced from Math StackExchange posts. Our approach preserves the effectiveness of structure matching while allowing queries to be executed in real-time.