Year: 2007 |
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LHNCBC-2007-062 |
Fine-Grained Indexing of the Biomedical Literature: MeSH Subheading Attachment for a MEDLINE Indexing Tool |
Neveol A, Shooshan SE, Mork JG, Aronson AR |
AMIA Annu Symp Proc. 2007;:553-7 |
Objective: This paper reports on the latest results an Indexing Initiative effort addressing the automatic attachment of subheadings to MeSH main headings recommended by the NLM's Medical Text Indexer. Material and Methods: Several linguistic statistical approaches are used to retrieve and attach the subheadings. Continuing collaboration with NLM indexers also provided insight on how automatic methods can better enhance indexing practice. Results: The methods were evaluated on corpus 50,000 MEDLINE citations. For main heading/subheading pair recommendations, the best precision is obtained with a post-processing rule method (58%) while the best recall is obtained pooling all methods (64%). For stand-alone subheading recommendations, the best performance is obtained with the PubMed Related Citations algorithm. Conclusion: Significant progress been made in terms of subheading coverage. After further evaluation, some of this work may be integrated in the MEDLINE indexing workflow. |
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