De l'usage r\'eel des emojis \`a une pr\'ediction de leurs cat\'egories (From Emoji Usage to Emoji-Category Prediction)
L{'}utilisation des emojis dans les messageries sociales n{'}a eu de cesse d{'}augmenter ces derni{\e}res ann{\'e}es. Plusieurs travaux r{\'e}cents ont port{\'e} sur la pr{\'e}diction d{'}emojis afin d{'}{\'e}pargner {\a} l{'}utillisateur le parcours de librairies d{'}emojis de plus en plus cons{\'e}quentes. Nous proposons une m{\'e}thode permettant de r{\'e}cup{\'e}rer automatiquement les cat{\'e}gories d{'}emojis {\`a} partir de leur contexte d{'}utilisation afin d{'}am{\'e}liorer la pr{\'e}diction finale. Pour ce faire nous utilisons des plongements lexicaux en consid{\'e}rant les emojis comme des mots pr{\'e}sents dans des tweets. Nous appliquons ensuite un regroupement automatique restreint aux emojis visages afin de v{\'e}rifier l{'}ad{\'e}quation des r{\'e}sultats avec la th{\'e}orie d{'}Ekman. L{'}approche est reproductible et applicable sur tous types d{'}emojis, ou lorsqu{'}il est n{\'e}cessaire de pr{\'e}dire de nombreuses classes.
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