Indexing Initiative
Evaluation Analysis

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Date	Information Available	Precision (P)	Recall (R)	F1-Measure	F2-Measure
November 2, 2001	System Parameters Sample Indexing Summary Results	0.2700	0.5400	0.3600	0.4583
March 14, 2007	System Parameters Sample Indexing (Individual Citations) Sample Indexing (All Citations) Summary Results	0.3352	0.5593	0.4192	0.4933
January 5, 2010	System Parameters	0.3253	0.5984	0.4215	0.5124

Formulas Used:
   F₁-Measure = 2 * ((P*R) / (P + R))
   F₂-Measure = 5 * ((P*R) / ((4*P) + R))
   Old Wrong F₂-Measure = 3 * ((P*R) / ((2*P) + R))

Last Modified: January 14, 2010							ii-public2
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Links to Our Sites MetaMap Public Release NEW: Distributable version of the actual MetaMap program. Indexing Initiative (II) Investigating computer-assisted and fully automatic methodologies for indexing biomedical text. Includes the NLM Medical Text Indexer (MTI). Semantic Knowledge Representation (SKR) Develop programs to provide usable semantic representation of biomedical text. Includes the MetaMap and SemRep programs. MetaMap Transfer (MMTx) Java-Based distributable version of the MetaMap program. Word Sense Disambiguation (WSD) Test collection of manually curated MetaMap ambiguity resolution in support of word sense disambiguation research. MEDLINE Baseline Repository (MBR) Static MEDLINE® Baselines for use in research involving biomedical citations. Allows for query searches and test collection creation. Structured Abstracts (SA) Information about NLM's research on Structured Abstracts in the MEDLINE® Baselines.
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