Sökning: id:"swepub:oai:DiVA.org:uu-260587" >
Learning Structural...
-
Beck, DanielUniversity of Sheffield
(författare)
Learning Structural Kernels for Natural Language Processing
- Artikel/kapitelEngelska2015
Förlag, utgivningsår, omfång ...
-
Stroudsburg, PA :Association for Computational Linguistics,2015
-
electronicrdacarrier
Nummerbeteckningar
-
LIBRIS-ID:oai:DiVA.org:uu-260587
-
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-260587URI
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:ref swepub-contenttype
-
Ämneskategori:art swepub-publicationtype
Anmärkningar
-
Structural kernels are a flexible learning paradigm that has been widely used in Natural Language Processing. However, the problem of model selection in kernel-based methods is usually overlooked. Previous approaches mostly rely on setting default values for kernel hyperparameters or using grid search, which is slow and coarse-grained. In contrast, Bayesian methods allow efficient model selection by maximizing the evidence on the training data through gradient-based methods. In this paper we show how to perform this in the context of structural kernels by using Gaussian Processes. Experimental results on tree kernels show that this procedure results in better prediction performance compared to hyperparameter optimization via grid search. The framework proposed in this paper can be adapted to other structures besides trees, e.g., strings and graphs, thereby extending the utility of kernel-based methods.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Cohn, TrevorUniversity of Melbourne
(författare)
-
Hardmeier, ChristianUppsala universitet,Institutionen för lingvistik och filologi,Datorlingvistik(Swepub:uu)chrha275
(författare)
-
Specia, LuciaUniversity of Sheffield
(författare)
-
University of SheffieldUniversity of Melbourne
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Transactions of the Association for Computational LinguisticsStroudsburg, PA : Association for Computational Linguistics3, s. 461-4732307-387X
Internetlänk
Hitta via bibliotek
Till lärosätets databas