1. Automatic Concept Indexing and Classification for Improved Retrieval in the Hazardous Substances Data Bank Doszkocs, Tamas; Chang, Hua Florence; Aronson, Alan; Thomas, Phillip, National Library of Medicine Wilder, Dean, MSD, Inc. Zamora, Antonio, Consultant

2. Hazardous Substances Data Bank Search

4. HSDB “radon” record for query “small-cell carcinomas”

5. HSDB Automatic MeSH Indexing

6. HSDB MeSH Indexing and Search Prototype

7. “small-cell carcinomas” query result

8. Focus Results by MeSH Headings

9. View Results by MeSH headings

10. Narrow Search by “air pollutants, radioactive”

11. View Results by Semantic Types (MeSH)

12. Radon and “Air pollution, indoor”

13. “Radon” HSDB Record

14. Future Plans Scale HSDB Automatic UMLS/MeSH Indexing Experiment Refine MetaMap Selection Algorithm Utilize Noun Phrase Parser(s) for non- UMLS/MeSH Concepts Incorporate AI Algorithms Test/Evaluate Integrate into TOXNET Production System

15. Automatic Concept Indexing and Classification for Improved Retrieval in the Hazardous Substances Data Bank Doszkocs, Tamas; Chang, Hua Florence; Aronson, Alan; Thomas, Phillip, National Library of Medicine Wilder, Dean, MSD, Inc. Zamora, Antonio, Consultant