Spanish corpora for the Named Entity Recognition (NER) Natural Language Processing (NLP)/Information Extraction (IE) task

This comparison takes a comprehensive look at various corpora in Spanish language that are available for the NLP/IE Named Entity Recognition (NER) task. The corpora are surveyed over all the various genre and domains of the underlying text as well as the encoded NER extraction objectives. Spanish belongs to the Romance languages group together with other major languages of the family including French, Italian, Portuguese, and Romanian, all national languages. Today, it is a global language with nearly 500 million native speakers, mainly in the Americas and Spain. Spanish is the official language of 20 countries. It is the world's second-most spoken native language after Mandarin Chinese; the world's fourth-most spoken language overall after English, Mandarin Chinese, and Hindustani (Hindi-Urdu); and the world's most widely spoken Romance language.