Talk:Inside–outside–beginning (tagging)

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Let's add an explanatory example. 73.189.42.59 (talk) 07:29, 28 March 2016 (UTC)[reply]

IOB example wrong?

Given the definition of IOB (IOB1) given in this article, the example sentence should be tagged as:

Alex I-PER
is O
going O
to O
Los I-LOC
Angeles I-LOC

Does someone disagree? --95.118.185.62 (talk) 10:55, 19 April 2019 (UTC)[reply]

It seems that someone did indeed disagree, as my correction was reverted a few days ago. However, I want to insist that the example sentence for IOB1 is incorrectly tagged.

According to the article, "the B- tag is used only when a tag is followed by a tag of the same type without O tokens between them." This definition is consistent with the cited article (Ramshaw and Marcus 1999): "words marked I are inside some baseNP, those marked O are outside, and the B tag is used to mark the left most item of a baseNP which immediately follows another baseNP." (p. 164)

In the example, Los Angeles is not following a named entity of the same type. Therefore, no B-tag should be used. 95.115.131.230 (talk) 18:18, 2 June 2019 (UTC)[reply]

I agree with you, and I reverted the reversion. I also added another example that actually uses the B tag in the IOB1 scheme. RealZeratul (talk) 19:32, 25 May 2020 (UTC)[reply]