Nested Named Entity Recognition

Abstract
Many named entities contain other named entities inside them. Despite this fact, the field of named entity recognition has almost entirely ignored nested named entity recognition, but due to technological, rather than ideological reasons. In this paper, we present a new technique for recognizing nested named entities, by using a discriminative constituency parser. To train the model, we transform each sentence into a tree, with constituents for each named entity (and no other syntactic structure). We present results on both newspaper and biomedical corpora which contain nested named entities. In three out of four sets of experiments, our model outperforms a standard semi-CRF on the more traditional top-level entities. At the same time, we improve the overall F-score by up to 30% over the flat model, which is unable to recover any nested entities.
Keywords No keywords specified (fix it)
Categories No categories specified
(categorize this paper)
Options
 Save to my reading list
Follow the author(s)
My bibliography
Export citation
Find it on Scholar
Edit this record
Mark as duplicate
Revision history Request removal from index Translate to english
 
Download options
PhilPapers Archive


Upload a copy of this paper     Check publisher's policy on self-archival     Papers currently archived: 10,561
External links
Setup an account with your affiliations in order to access resources via your University's proxy server
Configure custom proxy (use this if your affiliation does not provide a proxy)
Through your library
References found in this work BETA

No references found.

Citations of this work BETA

No citations found.

Similar books and articles
Sobhi Rayan (2009). Nominal Definition in the Writings of Ibn Taymiyya. International Studies in the Philosophy of Science 23 (2):123 – 141.
Sobhi Rayan (2011). Translation and Interpretation in Ibn Taymiyya's Logical Definition. British Journal for the History of Philosophy 19 (6):1047 - 1065.
Reina Hayaki (2009). Fictions Within Fictions. Philosophical Studies 146 (3):379 - 398.
Analytics

Monthly downloads

Added to index

2010-12-22

Total downloads

5 ( #223,146 of 1,098,129 )

Recent downloads (6 months)

1 ( #283,807 of 1,098,129 )

How can I increase my downloads?

My notes
Sign in to use this feature


Discussion
Start a new thread
Order:
There  are no threads in this forum
Nothing in this forum yet.