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From Himanshu Gahlot <himanshu.gahlo...@gmail.com>
Subject Re: f-score evaluation tool?
Date Tue, 06 Nov 2012 18:46:56 GMT
I second Steve. ClearTK is an NLP library built using UIMA (and uimaFIT).
It has a fully functional Named Entity Extraction example annotator
including evaluation using the MASC corpus.

Himanshu


On Tue, Nov 6, 2012 at 4:28 AM, Steven Bethard <steven.bethard@gmail.com>wrote:

> On Tue, Nov 6, 2012 at 9:26 AM, Yasen Kiprov <yasenkiprov@yahoo.com>
> wrote:
> > I'm writing a named entity recognition system for text excerpts from the
> social/public domain: blogs, news, etc. I'm testing different approaches
> with rules and ML and I need to evaluate annotations accuracy (in terms of
> f-score against a gold corpus). My plan is to use the MASC corpus or build
> a custom one but the first task is to find the right tools for evaluation.
>
> This sounds a lot like an example we have in ClearTK (it also uses the
> MASC named entity data). The full cross-validation evaluation code is
> here:
>
>
> https://code.google.com/p/cleartk/source/browse/cleartk-examples/src/main/java/org/cleartk/examples/chunking/EvaluateNamedEntityChunker.java
>
> And the class that actually calculates F-score, etc. over annotations is
> here:
>
>
> https://code.google.com/p/cleartk/source/browse/cleartk-eval/src/main/java/org/cleartk/eval/AnnotationStatistics.java
>
> Steve
>

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