LIG at CLEF 2016 Cultural Microblog Contextualization: TimeLine Illustration based on Microblogs

Nayanika Dogra (1, 2, 3) , Philippe Mulhem (1, 2, 3) , Nawal Ould Amer (1, 3) , Lorraine Goeuriot (1, 2, 3)

1 LIG - Laboratoire d'Informatique de Grenoble
2 UGA [2016-2019] - Université Grenoble Alpes [2016-2019]
3 MRIM - Modélisation et Recherche d’Information Multimédia [Grenoble]

This paper presents the approach used by the LIG-MRIM research group to the participation of the task 3 (TimeLine illustration based on Microblogs) for the CLEF of Cultural Microblog Contextualization track. This task deals with the retrieval of tweets related to cultural events (music festivals). For the content-based elements, we use the classical BM25 model [4]. Then, we diversify the results based on duplicate removal, using tf-based representations of tweets. In a third step, we apply optional re-ranking related to time-line, activity and popularity of authors of tweets.

Mots clés: reranking; diversification; tweet retrieval

Domaines: Recherche d'information [cs.IR]

Nayanika Dogra, Philippe Mulhem, Nawal Ould Amer, Lorraine Goeuriot. LIG at CLEF 2016 Cultural Microblog Contextualization: TimeLine Illustration based on Microblogs. CLEF 2016, Sep 2016, Evora, Portugal. pp.1201-1206. ⟨hal-01571438⟩