@book{Rig23-BK, title = {Foundations of Probabilistic Logic Programming: Languages, Semantics, Inference and Learning, Second Edition}, author = {Fabrizio Riguzzi}, publisher = {River Publishers}, year = {2023}, isbn = {9788770227193}, e-isbn = {9788770227063}, url = {https://www.riverpublishers.com/book_details.php?book_id=1026}, address = {Gistrup, Denmark} }

@inproceedings{AzzBelRig2023-summary-statements-IC, author = {Azzolini, Damiano and Bellodi, Elena and Riguzzi, Fabrizio}, title = {Summary of Statistical Statements in Probabilistic Logic Programming}, year = {2023}, journal = {Electronic Proceedings in Theoretical Computer Science, EPTCS}, volume = {385}, pages = {384 -- 385}, doi = {10.4204/EPTCS.385.41}, url = {https://cgi.cse.unsw.edu.au/~eptcs/content.cgi?ICLP2023#EPTCS385.41} }

@inproceedings{AzzBelRig2023-towardsdt-IC, author = {Azzolini, Damiano and Bellodi, Elena and Riguzzi, Fabrizio}, title = {Towards a Representation of Decision Theory Problems with Probabilistic Answer Set Programs}, year = {2023}, journal = {Electronic Proceedings in Theoretical Computer Science, EPTCS}, volume = {385}, pages = {190 -- 191}, doi = {10.4204/EPTCS.385.19}, url = {https://cgi.cse.unsw.edu.au/~eptcs/content.cgi?ICLP2023#EPTCS385.19} }

@inproceedings{AzzRig2023-AIXIA-IC, title = {Inference in Probabilistic Answer Set Programming under the Credal Semantics}, author = {Damiano Azzolini and Fabrizio Riguzzi}, booktitle = {AixIA 2023 - Advances in Artificial Intelligence}, year = 2023, editor = {Roberto Basili and Domenico Lembo and Carla Limongelli and Andrea Orlandini}, publisher = {Springer}, volume = {14318}, address = {Heidelberg, Germany}, series = {Lecture Notes in Artificial Intelligence}, venue = {Roma, Italy}, eventdate = {November 6--9, 2023}, doi = {10.1007/978-3-031-47546-7_25}, url = { https://link.springer.com/chapter/10.1007/978-3-031-47546-7_25}, pages = {367-380} }

@inproceedings{GenBizAzz23-ILP-IC, title = {Regularization in Probabilistic Inductive Logic Programming}, author = {Gentili, Elisabetta and Bizzarri, Alice and Azzolini, Damiano and Zese, Riccardo and Riguzzi, Fabrizio}, booktitle = {International Conference on Inductive Logic Programming}, year = {2023}, note = {To appear} }

@article{AzzRig23-IJAR-IJ, title = {Lifted Inference for Statistical Statements in Probabilistic Answer Set Programming}, author = {Damiano Azzolini and Fabrizio Riguzzi}, journal = {International Journal of Approximate Reasoning}, year = {2023}, doi = {10.1016/j.ijar.2023.109040}, pages = {109040}, volume = {163}, issn = {0888-613X}, url = {https://www.sciencedirect.com/science/article/pii/S0888613X23001718}, keywords = {Statistical statements, Probabilistic answer set programming, Lifted inference}, abstract = {In 1990, Halpern proposed the distinction between Type 1 and Type 2 statements: the former express statistical information about a domain of interest while the latter define a degree of belief. An example of Type 1 statement is “30% of the elements of a domain share the same property” while an example of Type 2 statement is “the element x has the property y with probability p”. Recently, Type 1 statements were given an interpretation in terms of probabilistic answer set programs under the credal semantics in the PASTA framework. The algorithm proposed for inference requires the enumeration of all the answer sets of a given program, and so it is impractical for domains of not trivial size. The field of lifted inference aims to identify programs where inference can be computed without grounding the program. In this paper, we identify some classes of PASTA programs for which we apply lifted inference and develop compact formulas to compute the probability bounds of a query without the need to generate all the possible answer sets.}, scopus = {2-s2.0-85174067981} }

@article{SchVDBRig23-TPLP-IJ, title = {Automatic Differentiation in Prolog}, doi = {10.1017/S1471068423000145}, journal = {Theory and Practice of Logic Programming}, publisher = {Cambridge University Press}, author = {Schrijvers, Tom and Van Den Berg, Birthe and Riguzzi, Fabrizio}, year = {2023}, pages = {900–917}, volume = {23}, number = {4}, pdf = {https://arxiv.org/pdf/2305.07878.pdf} }

@inproceedings{AzzGenRigPLP2023-IW, author = {Azzolini, Damiano and Gentili, Elisabetta and Riguzzi, Fabrizio}, title = {Link Prediction in Knowledge Graphs with Probabilistic Logic Programming: Work in Progress}, series = {{CEUR} Workshop Proceedings}, booktitle = {Proceedings of the International Conference on Logic Programming 2023 Workshops co-located with the 39th International Conference on Logic Programming ({ICLP} 2023)}, editor = {Arias, Joaquín and Batsakis, Sotiris and Faber, Wolfgang and Gupta, Gopal and Pacenza, Francesco and Papadakis, Emmanuel and Robaldo, Livio and Ruckschloss, Kilian and Salazar, Elmer and Saribatur, Zeynep G. and Tachmazidis, Ilias and Weitkamper, Felix and Wyner, Adam}, volume = {3437}, pages = {1--4}, publisher = {CEUR-WS.org}, year = {2023}, url = {https://ceur-ws.org/Vol-3437/short5PLP.pdf} }

@inproceedings{AzzBelRigMAP-AIXIA-IC, author = {Azzolini, Damiano and Bellodi, Elena and Riguzzi, Fabrizio}, editor = {Dovier, Agostino and Montanari, Angelo and Orlandini, Andrea}, title = {{MAP} Inference in Probabilistic Answer Set Programs}, booktitle = {AIxIA 2022 -- Advances in Artificial Intelligence}, year = {2023}, publisher = {Springer International Publishing}, address = {Cham}, pages = {413--426}, abstract = {Reasoning with uncertain data is a central task in artificial intelligence. In some cases, the goal is to find the most likely assignment to a subset of random variables, named query variables, while some other variables are observed. This task is called Maximum a Posteriori (MAP). When the set of query variables is the complement of the observed variables, the task goes under the name of Most Probable Explanation (MPE). In this paper, we introduce the definitions of cautious and brave MAP and MPE tasks in the context of Probabilistic Answer Set Programming under the credal semantics and provide an algorithm to solve them. Empirical results show that the brave version of both tasks is usually faster to compute. On the brave MPE task, the adoption of a state-of-the-art ASP solver makes the computation much faster than a naive approach based on the enumeration of all the worlds.}, isbn = {978-3-031-27181-6}, url = {https://link.springer.com/chapter/10.1007/978-3-031-27181-6_29}, doi = {10.1007/978-3-031-27181-6_29} }

@inproceedings{AzzBelRigApprox-AIXIA-IC, author = {Azzolini, Damiano and Bellodi, Elena and Riguzzi, Fabrizio}, editor = {Dovier, Agostino and Montanari, Angelo and Orlandini, Andrea}, title = {Approximate Inference in Probabilistic Answer Set Programming for Statistical Probabilities}, booktitle = {AIxIA 2022 -- Advances in Artificial Intelligence}, year = {2023}, publisher = {Springer International Publishing}, address = {Cham}, pages = {33--46}, abstract = {``Type 1'' statements were introduced by Halpern in 1990 with the goal to represent statistical information about a domain of interest. These are of the form ``x{\%} of the elements share the same property''. The recently proposed language PASTA (Probabilistic Answer set programming for STAtistical probabilities) extends Probabilistic Logic Programs under the Distribution Semantics and allows the definition of this type of statements. To perform exact inference, PASTA programs are converted into probabilistic answer set programs under the Credal Semantics. However, this algorithm is infeasible for scenarios when more than a few random variables are involved. Here, we propose several algorithms to perform both conditional and unconditional approximate inference in PASTA programs and test them on different benchmarks. The results show that approximate algorithms scale to hundreds of variables and thus can manage real world domains.}, isbn = {978-3-031-27181-6}, url = {https://link.springer.com/chapter/10.1007/978-3-031-27181-6_3}, doi = {10.1007/978-3-031-27181-6_3} }

@article{GreSalFab23-Biomed-IJ, author = {Greco, Salvatore and Salatiello, Alessandro and Fabbri, Nicolò and Riguzzi, Fabrizio and Locorotondo, Emanuele and Spaggiari, Riccardo and De Giorgi, Alfredo and Passaro, Angelina}, title = {Rapid Assessment of {COVID-19} Mortality Risk with {GASS} Classifiers}, journal = {Biomedicines}, volume = {11}, year = {2023}, number = {3}, article-number = {831}, url = {https://www.mdpi.com/2227-9059/11/3/831}, issn = {2227-9059}, abstract = {Risk prediction models are fundamental to effectively triage incoming COVID-19 patients. However, current triaging methods often have poor predictive performance, are based on variables that are expensive to measure, and often lead to hard-to-interpret decisions. We introduce two new classification methods that can predict COVID-19 mortality risk from the automatic analysis of routine clinical variables with high accuracy and interpretability. SVM22-GASS and Clinical-GASS classifiers leverage machine learning methods and clinical expertise, respectively. Both were developed using a derivation cohort of 499 patients from the first wave of the pandemic and were validated with an independent validation cohort of 250 patients from the second pandemic phase. The Clinical-GASS classifier is a threshold-based classifier that leverages the General Assessment of SARS-CoV-2 Severity (GASS) score, a COVID-19-specific clinical score that recently showed its effectiveness in predicting the COVID-19 mortality risk. The SVM22-GASS model is a binary classifier that non-linearly processes clinical data using a Support Vector Machine (SVM). In this study, we show that SMV22-GASS was able to predict the mortality risk of the validation cohort with an AUC of 0.87 and an accuracy of 0.88, better than most scores previously developed. Similarly, the Clinical-GASS classifier predicted the mortality risk of the validation cohort with an AUC of 0.77 and an accuracy of 0.78, on par with other established and emerging machine-learning-based methods. Our results demonstrate the feasibility of accurate COVID-19 mortality risk prediction using only routine clinical variables, readily collected in the early stages of hospital admission.}, doi = {10.3390/biomedicines11030831} }

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