My main research interests concern Medical Information Extraction and Retrieval for Clinical Decision Support.
My main research aims to reduce the Semantic Gap between queries and documents to improve Clinical Decision Support. The Semantic Gap is a long-standing problem in Information Retrieval (IR) posing a critical challenge in medical settings due to the large presence - within the medical language - of synonymous and polyseomus words, along with context specific expressions. Two main lines of work have emerged in the past years to tackle this issue: (i) the use of external knowledge resources to enhance query and document bag-of-words representations; and (ii) the use of semantic models, based on the distributional hypothesis, which perform semantic matching on latent representations of documents and queries. We are designing, developing, and evaluating novel methods to leverage authoritative external knowledge resources in both lines, trying to tackle from different angles our core problem. The research lies at the intersection between Information Retrieval and Information Extraction, as it requires to combine retrieval models with entity linking and relation extraction techniques.
My research also concerns the extraction and usage of semantic relations from text to improve the retrieval of medical case reports through the use of document-level machine-readable Semantic Networks. These networks can then be leverged to semantically represent and compare documents. To make use of Semantic Networks, it is necessary to extract and link relations between them. Relations are typically in the form of triples (s,p,o), where s stands for subject, p for predicate and o for object. Therefore, Relation Extraction methods, along with Link Prediction techniques on multi-relational data, are relevant aspects of my research focus.
Since January 2019, my research work is partially supported by the EXAMODE H2020 EU project (more information below).
I was the Proceedings Chair of the 2nd Design of Experimental Search & Information REtrieval Systems Conference (DESIRES 2021) held in Padua from 15 to 18 September 2021: DESIRES 2021
I was the Publicity Chair of the 11th Italian Information Retrieval Workshop (IIR 2021) held in Bari from 13 to 15 September 2021: IIR 2021
I was the Organization Chair of the 17th Italian Research Conference on Digital Libraries (IRCDL 2021) held virtually in Padua from 18 to 19 February 2021: IRCDL 2021
I have contributed to the organization of the 42nd Interational ACM SIGIR Conference on Research and Development in Information Retrieval held in Paris from 21 to 25 July 2019: SIGIR 2019
I have contributed to the organization of the 38th European Conference on Information Retrieval held in Padua from 20 to 23 March 2016: ECIR 2016