SUMMARY : Session O36-W Semantically Annotated Corpora


Title I-CAB: the Italian Content Annotation Bank
Authors B. Magnini, E. Pianta, C. Girardi, M. Negri, L. Romano, M. Speranza, V. Lenzi, R. Sprugnoli
Abstract In this paper we present work in progress for the creation of the Italian Content Annotation Bank (I-CAB), a corpus of Italian news annotated with semantic information at different levels. The first level is represented by temporal expressions, the second level is represented by different types of entities (i.e. person, organizations, locations and geo-political entities), and the third level is represented by relations between entities (e.g. the affiliation relation connecting a person to an organization). So far I-CAB has been manually annotated with temporal expressions, person entities and organization entities. As we intend I-CAB to become a benchmark for various automatic Information Extraction tasks, we followed a policy of reusing already available markup languages. In particular, we adopted the annotation schemes developed for the ACE Entity Detection and Time Expressions Recognition and Normalization tasks. As the ACE guidelines have originally been developed for English, part of the effort consisted in adapting them to the specific morpho-syntactic features of Italian. Finally, we have extended them to include a wider range of entities, such as conjunctions.
Keywords semantic annotation, corpora, Information Extraction
Full paper I-CAB: the Italian Content Annotation Bank