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Carole Thompson, founder of the TAG! scheme, adds: "There's no barcode on the cards, so no one can make money as there's no personal data collected about individual customers".
When coarse-grained tokenization rules are used, more representative tag scheme exhibited no significant advantage over the IOB tag scheme.
System 2 is the only system that utilized the IOBES tag scheme in the CHEMDNER task.
The IOBES tag scheme with fine-grained tokenization can successfully recognize entities that comprise many tokens.
Since words that consist of four or fewer tokens have constitute around 90.7% of the CHEMDNER corpus, the five-tag scheme, IOB12E, should outperform the four tag scheme IOBE.
However, System 2 did not pay attention to the effect of the tokenization in the combination with tag scheme.
Similar(40)
The CHEMDNER text corpus [7] was utilized to examine the performance of various tag schemes.
Either were overlooked in the coarse-grained tokenization method, or have incomplete boundaries in tag schemes such as IOB.
Various tag schemes for the task of Chinese word segmentation have been proposed and showed a promising improvement.
Experiments were conducted using combinations of different tokenization strategies and tag schemes to investigate the effects of tag set selection and tokenization method on the CHEMDNER task.
While more precise and expressive tag schemes seems to perform better in combination with finer tokenization, the most representative IOB12Ef remains the worst of all schemes.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com