Ivano Azzini

Ivano Azzini

About

78
Publications
11,862
Reads
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2,523
Citations
Citations since 2017
19 Research Items
1885 Citations
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20172018201920202021202220230100200300400

Publications

Publications (78)
Technical Report
Full-text available
SOCRATES (SOcial multi-CRiteria AssessmenT of European policieS) is a software tool explicitly designed for impact assessment problems. Three main components constitute the core of SOCRATES: multi-criteria, equity and sensitivity analyses. The impact matrix may include quantitative (including also stochastic and/or fuzzy uncertainty) and qualitativ...
Preprint
Full-text available
In this work we study the following problem, from a computational point of view: If three points are selected in the unit square at random, what is the probability that the triangle obtained is obtuse, acute or right? We provide two convergent strategies: the frst derived from the ideas introduced in [2] and the second built on the combinatorics th...
Preprint
Full-text available
Starting from a very simple economic scenario, we build on it a game and then we introduce a general strategy able to reduce a regression problem to an equivalent binary classification problem. This reduction scheme (that we call adaptive reduction or also dynamic reduction) can be also used to derive a new boosting algorithm for regression problem...
Presentation
Abstract and oral presentation: 10th International Conference on Sensitivity Analysis of Model Output (SAMO 2022) Conference. 14-16 March, Florida State University, Tallahassee.
Article
Full-text available
In this paper a dataset of functions has been described which includes analytical values of Sobol’ first-order and total-order indices. This unique collection represents a valid benchmark to evaluate sensitivity analysis methodologies and allows the comparison of different technique outcomes. The benchmarking dataset was introduced in [1] following...
Article
Full-text available
This study compares the performances of two sampling-based strategies for the simultaneous estimation of the first- and total-order variance-based sensitivity indices (a.k.a. Sobol’ indices). The first strategy corresponds to the current approach employed by practitioners and recommended in the literature. The second one was only recently introduce...
Article
Full-text available
Variance-based methods are very popular techniques to carry out global sensitivity analysis of model responses. In particular, Monte Carlo-based estimators related to Sobol’ sensitivity indices are often preferred due to their versatility, easiness of interpretation, and straightforward implementation. However, the number of model evaluations requi...
Article
This paper provides the result of a parametric sensitivity study conducted on the atmospheric dispersion module of the Accident Damage Analysis Module for consequence assessment, developed by the European Commission to support the EU competent authorities for the implementation of the Seveso Directive in their countries or other legislation associa...
Preprint
Full-text available
This study compares the performances of two sampling-based strategies for the simultaneous estimation of the first-and total-orders variance-based sensitivity indices (a.k.a Sobol' indices). The first strategy was introduced by [8] and is the current approach employed by practitioners. The second one was only recently introduced by the authors of t...
Article
Full-text available
Condorcet consistent rules were originally developed for preference aggregation in the theory of social choice. Nowadays these rules are applied in a variety of fields such as discrete multi-criteria analysis, defence and security decision support, composite indicators, machine learning, artificial intelligence, queries in databases or internet mul...
Thesis
In questo lavoro viene riproposto, quello che sembra essere il primo lavoro scientifico [1], che introduce un studio modellistico di alcune tecniche base del karate. Questo articolo, pubblicato nel 1975, che trova le sue origini in [2], e’ a mio parere, da considerarsi seminale. Nonostante cio’ soffre in alcuni punti di una certa carenza espositiva...
Article
Full-text available
In this paper, we present Dragonfly, a free open-source software toolkit that allows creating a parallel collaboration environment between MATLAB and/or OCTAVE instances, allowing us to have a robust system, which is flexible, transparent and interoperable. Dragonfly can be used under multi-platform (Linux, Windows, Mac) and multi-environment confi...
Technical Report
European Commission, Report number: JRC103492.
Technical Report
European Commission, Report number: JRC96135.
Article
Assessing the ability of critical infrastructures to overcome shocks and optimizing their preparedness for critical events is a key factor in reducing damage, ensuring resilience, and mitigating monetary losses. When considering the problem in a broad sense, the assessment of technical dependencies among engineered systems can be supported by the a...
Conference Paper
Many methodologies proposed in the literature for modelling and simulating the behaviour of critical infrastructures (CIs) in response to disruptive events are based on exhaustive analytic models, require extensive amounts of data and suffer from high computational burden. These factors restrain their applicability in practical policy making proces...
Technical Report
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Article
Over the past few years, the European Commission has placed Critical Infrastructure Protection under the spotlight. Therefore, the Joint Research Centre is developing a tool to estimate the economic impact of Critical Infrastructure (CI) network failure, resulting from a hazard, on the regional or national level. This tool, which is presented in th...
Conference Paper
The input-output approach proposed by Wassily Leontief is regarded as a key tool for the quantitative analysis of the interdependencies between different interconnected sectors within an economy, especially in today's highly interactive networks of producers/ service providers. In recent years, Leontief's model was also extended in order to assess...
Conference Paper
Since the adequate functioning of critical infrastructures is crucially sustaining societal and economic development, the understanding and assessment of their vulnerability and interdependency become more and more important for improving resilience at system level. The paper proposes an extension of DMCI (Dynamic Functional Modelling of vulnerabil...
Article
Variance based methods have assessed themselves as versatile and effective among the various available techniques for sensitivity analysis of model output. Practitioners can in principle describe the sensitivity pattern of a model Y=f(X1,X2,…,Xk) with k uncertain input factors via a full decomposition of the variance V of Y into terms depending on...
Conference Paper
Full-text available
In the Bayesian estimation of DSGE models with DYNARE (specifically the Matlab Version for Windows), most of the computing time is devoted to the posterior estimation with the Metropolis algorithm. Usually, the Metropolis is run using multiple parallel chains, to allow more careful convergence testing. In this work we describe a way to parallelize...
Chapter
Full-text available
Given a set of gene expression time series obtained by a microarray experiment, this work proposes a novel quality control procedure that exploits six analytical methods, each of which allows for the identification in an automated way of genes that have expression spikes within narrow time-windows and over a chosen amplitude threshold. The output o...
Article
Recent advances in automatic speech recognition and related technologies allow computers to carry on conversations by telephone. We developed an intelligent dialogue system that interacts with hypertensive patients to collect data about their health status. Patients thus avoid the inconvenience of traveling for frequent face to face visits to monit...
Article
The applications of multi-access services (MAS) for chronic patients monitoring and telemedicine services are discussed. In MAS a variety of access technology, such as the Web, client-server applications on PC, specialized devices for data collection and transmission, IVR and dialogue systems are integrated into one service. The architecture for MA...
Article
Full-text available
The recent integration of telephony systems with information and communication technology (ICT) enables the development of innovative tools for telemedicine. The dissemination and widespread acceptance of telephone-based care monitoring systems challenge the researcher to deal with the cognitive factors involved in the patient-physician interaction...
Article
Recent advances in automatic speech recognition and related technologies allow computers to carry on conversations by telephone. We developed an intelligent dialog system that interacts with hypertensive patients to collect data about their health status. Patients thus avoid the inconvenience of going for frequent visits that monitor some clinical...
Conference Paper
Full-text available
Recent advances in automatic speech recognition and related technologies allow the computers to carry on conversations by telephone. We based on the knowledge represented in a widely accepted guideline for the care of hypertension to develop a system that allows physicians to manage a complete medical record for hypertensive patients. The care deli...
Conference Paper
Full-text available
The very rapid evolution of telecommunication technology is leading to the convergence of fixed and mobile networks and devices. At present, it is very widespread for people to access the Web with Internet connections using HTML and/or WML (Wireless Markup Language) browsers, and present portable devices (e.g. PC/PDA, GPRS/WAP phones) offer a range...
Conference Paper
The paper describes the ITC-irst approach for handling spoken dialogue interactions over the telephone. In particular, we have used the technology to develop a telemedicine prototype system that provides health-care to chronic patients. First, the system architecture will be summarized, then we will describe an automatic service for home monitoring...
Conference Paper
Full-text available
The paper describes the ITC-irst approach for handling spoken dialogue interactions over the telephone. In particular, we have used the technology to develop a telemedicine prototype system that provides health-care to chronic patients. First, the system architecture will be summarized, then we will describe an automatic service for home monitoring...
Conference Paper
Full-text available
this paper has been partially developed inside the E.U. project Homey [2, 3]. The purpose of this project is to follow the clinical state of patients affected by hypertension, by means of voice and call centre technology, as will be described in section 3. The benefits resulting from the adoption of mobile devices are currently being investigated
Conference Paper
Full-text available
This paper deals with the problem of the general usefulness of results coming from prognostic models in medicine. It reports a collection of available theoretical results on the sample size of the studies taken from Computational Learning theory and basic statistics. It is concluded that a general guideline for publishing Data Mining results in med...
Conference Paper
Full-text available
Recently ITC-irst (Interactive Sensory System division) and University of Pavia (Medical Informatics Labs) are work- ing together to realize an intelligent (adaptive) dialogue system with language understanding capabilities. In this framework, some telemedicine services able to handle multimodal interac- tions (i.e. input/output can be provided by...
Conference Paper
Full-text available
This paper presents the use of data mining tools to derive a prognostic model of the outcome of resectable hepatocellular carcinoma. The main goal of the study was to summarize the experience gained over more than 20 years by a surgical team. To this end, two decision trees have been induced from data: a model M1 that contains a full set of prognos...

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