CEDEL2: Corpus Escrito del Español L2 (version 2)

CEDEL2 (v2)

Sept. 2020


What is tagging?

Part-of-Speech tagging (POS tagging) consists of automatically assigning tags to words. Each word is tagged (=labelled) according to its linguistic category. A simplified form of POS tagging is similar to what we used to do at school when identifying words as Nouns, Verbs, Adjectives, Prepositions. For example the word ‘amigo’ will be tagged as NCMS, which means that it is a Noun, Common, Masculine, Singular.

Which CEDEL2 subcorpora are tagged?

In this version of CEDEL2, only the Spanish and English components of CEDEL2 have been POS tagged: all the L2 Spanish learner subcorpora, the L1 Spanish native subcorpus and the L1 English native subcorpus.

What is POS tagging used for in CEDEL2?

When searching the CEDEL2 corpus, you can do two types of searches:

When doing an advanced search, the corpus must have been previously POS tagged. This is why CEDEL2 has been POS tagged.

Which tags have been used?

CEDEL2 subcorpora have been automatically POS tagged with the Freeling tagger. For an interpretation of the tags, see the Freeling tagset description and, more specifically, the Spanish tagset and the English tagset. You can also see an online demo of Freeling where you can introduce your own text and it will be automatically tagged.

A note on automatic POS tagging

Please note that in this version of CEDEL2 we have done an automatic POS tagging, which implies that some words produced by learners might have been incorrectly categorised due to the very nature of learners’ language. This is so because the POS tagger automatically applies Spanish native categories onto the learner language (L2 Spanish), e.g.:

Despite the shortcomings of automatic tagging, we believe that this type of tagging is still very useful for those users who want to do complex searches, e.g., two advanced searches comparing the word order Noun+Adjective (blanco perro) vs. Adjective+Noun (perro blanco). The automatic tagger will not tag as adjectives learners’ misspelled adjectives (espanol ‘español’ or intilligete ‘inteligente’). However, properly spelled adjectives, which are the majority, will be correctly tagged as adjectives. Therefore, automatic tagging in a learner corpus is more useful than no tagging at all.

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