Manuela Speranza

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Most of the data stored in the Semantic Web is organized in schema models, which can be represented as labeled graphs where labels are short natural language expressions. Examples of schema models include ER-schema automata, ontologies, taxonomies, and Web Directories. The semantics of schema models is not explicit but is hidden in their structures and(More)
BACKGROUND Pyruvate kinase (PK) plays a major role in the regulation of glycolysis. Its catalytic activity is controlled by the substrate phosphoenolpyruvate and by one or more allosteric effectors. The crystal structures of the non-allosteric PKs from cat and rabbit muscle are known. We have determined the three-dimensional structure of the allosteric type(More)
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(More)
In this paper, we present the NewsReader MEANTIME corpus, a semantically annotated corpus of Wikinews articles. The corpus consists of 480 news articles, i.e. 120 English news articles and their translations in Spanish, Italian, and Dutch. MEANTIME contains annotations at different levels. The document-level annotation includes markables (e.g. entity(More)
While there is a wide consensus in the NLP community over the modeling of temporal relations between events, mainly based on Allen’s temporal logic, the question on how to annotate other types of event relations, in particular causal ones, is still open. In this work, we present some annotation guidelines to capture causality between event pairs, partly(More)
In this paper we propose and investigate Ontology Population from Textual Mentions (OPTM), a sub-task of Ontology Population from text where we assume that mentions for several kinds of entities (e.g. PERSON, O R G A N I Z A T I O N , LO C A T I O N , GEOPOLITICAL_ ENTITY) are already extracted from a document collection. On the one hand, OPTM simplifies(More)
This paper describes the outcomes of the TimeLine task (Cross-Document Event Ordering), that was organised within the Time and Space track of SemEval-2015. Given a set of documents and a set of target entities, the task consisted of building a timeline for each entity, by detecting, anchoring in time and ordering the events involving that entity. The(More)
English. This report describes the FactA (Event Factuality Annotation) Task presented at the EVALITA 2016 evaluation campaign. The task aimed at evaluating systems for the identification of the factuality profiling of events. Motivations, datasets, evaluation metrics, and postevaluation results are presented and discussed. Italiano. Questo report descrive(More)
Glyceraldehyde-phosphate dehydrogenase (D-glyceraldehyde-3-phosphate : NADP+ oxidoreductase (phosphorylating), EC from spinach chloroplasts is a polymeric protein of approx. 600,000 daltons and sodium dodecyl sulphate gel electrophoresis shows that it consists of two subunits of molecular weight 43,000 and 37,000. Comparison of amino acid analyses(More)