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Introduction
Research Topics:
Game Theory and Applications
Finance
Neural Networks and Applications
Sustainability
Multicriteria Decision Making
Differential Geometry
Health Economics
Application of AI methods
Learning Analytics
Publications
Publications (77)
This paper presents an innovative approach based on the Monte Carlo option pricing model and Natural Language Processing (NLP) to support investment decisions in wind farm projects. Thanks to recent ever deeper architectures such as Transformers, the linguistic capabilities of NLP models have become increasingly advanced to the point of helping in...
In this paper, pedal-like curves are defined resulting from the orthogonal projection of a fixed point on the alternative frame vectors of a given regular curve. For each pedal curve, the Frenet vectors, the curvature and the torsion functions are found to provide the common relations among the main curve and its pedal curves. Then, Smarandache cur...
The Chinese Postman Problem (CPP) is a well-known optimization problem involving determining the shortest route, modeling the system as an undirected graph, for delivering mail, ensuring all roads are traversed while returning to the post office. The Directed Chinese Postman Problem (DCPP) extends the Chinese Postman Problem (CPP), where the underl...
The Optimal Multivariate Mixture Problem (OMMP) consists of finding an optimal mixture which, starting from a set of elements (items) described by a set of variables (features), is as close as possible to an ideal solution. This problem has numerous applications spanning various fields, including food science, agriculture, chemistry, materials scie...
Optimal portfolio selection—composing a set of stocks/assets that provide high yields/returns with a reasonable risk—has attracted investors and researchers for a long time. As a consequence, a variety of methods and techniques have been developed, spanning from purely mathematics ones to computational intelligence ones. In this paper, we introduce...
This paper aims to solve the Chinese Postman Problem (CPP) using an Ant Colony Optimization (ACO) algorithm. In graph theory, the CPP looks for the shortest closed path that visits every edge of a connected undirected graph. This problem has many applications, including route optimization, interactive system analysis, and flow design. Although nume...
The Blockchain is a shared and immutable data structure defined as a digital register whose entries are grouped into blocks, concatenated in chronological order, and whose integrity is guaranteed through the use of cryptography. Blockchain technology in agriculture and agribusiness has gained significant attention as a potential solution to various...
Osteoporosis is a common musculoskeletal disorder among the elderly and a chronic condition which, like many other chronic conditions, requires long-term clinical management. It is caused by many factors, including lifestyle and obesity. Bioelectrical impedance analysis (BIA) is a method to estimate body composition based on a weak electric current...
This article analyzes the trading strategies of five state-of-the-art agents based on reinforcement learning on six commodity futures: brent oil, corn, gold, coal, natural gas, and sugar. Some of these were chosen because of the periods considered (when they became essential commodities), that is, before and after the 2022 Russia–Ukraine conflict....
Automatic short answer grading (ASAG), a hot field of natural language understanding, is a research area within learning analytics. ASAG solutions are conceived to offload teachers and instructors, especially those in higher education, where classes with hundreds of students are the norm and the task of grading (short)answers to open-ended question...
Sustainable mobility is an increasingly significant issue that both public and private organizations consider in order to reduce emissions by their members. In this paper, the Life Cycle Assessment (LCA) approach was used to evaluate sustainable mobility. Data coming from a study carried out at the University of Foggia were processed by Gabi LCA so...
In this paper, we calculate the Gaussian curvatures of the dual spherical indicatrix curves formed on unit dual sphere by the Blaschke vectors and dual instantaneous Pfaff vectors of dual parallel equidistant ruled surfaces (DPERS) and we give the relationships between these curvatures. In addition to—in cases where the base curves of these DPERS a...
Neural networks have recently been established as state-of-the-art in forecasting financial time series. However, many studies show how one architecture, the Long-Short Term Memory, is the most widespread in financial sectors due to its high performance over time series. Considering some stocks traded in financial markets and a crypto ticker, this...
Thanks to the development of increasingly sophisticated machine-learning techniques, it is possible to improve predictions of a particular phenomenon. In this paper, after analyzing data relating to the mobility habits of University of Foggia (UniFG) community members, we apply logistic regression and cross validation to determine the information t...
Thanks to the development of increasingly sophisticated machine-learning techniques, it is possible to improve predictions of a particular phenomenon. In this paper, after analyzing data relating to the mobility habits of University of Foggia (UniFG) community members, we apply logistic regression and cross validation to determine the information t...
This paper proposes a generalization of Shleifer’s (RAND J Econ 16:319–327, 1985) model of yardstick competition to a dynamic framework. In a differential game setting, we show that the yardstick mechanism effectively replicates the first-best solution if players adopt open-loop behaviour rules and are symmetric at the initial time; in the absence...
Due to COVID-19, higher education institutions all over the world transitioned to online learning. The sudden and forced transition to this new learning methodology pushed the Universities to rapidly adequate to the needs, upgrading their digital platforms to comply with the new requirements. In the same way, teachers had to adapt their teaching to...
Financial bubbles represent a severe problem for investors. In particular, the cryptocurrency market has witnessed the bursting of different bubbles in the last decade, which in turn have had spillovers on all the markets and real economies of countries. These kinds of markets and their unique characteristics are of great interest to researchers. G...
In financial markets, sentiment analysis on natural language sentences can improve forecasting. Many investors rely on information extracted from newspapers or their feelings. Therefore, this information is expressed in their language. Sentiment analysis models classify sentences (or entire texts) with their polarity (positive, negative, or neutral...
Nowadays, the information obtainable from the markets are potentially limitless. Economic theory has always supported the possible advantage obtainable from having more information than competitors, however quantifying the advantage that these can give has always been a problem. In particular, in this paper we study the amount of information obtain...
In this study, we examine the dual expression of Valeontis' concept of parallel p-equidistant ruled surfaces well known in Euclidean 3-space, according to the Study mapping. Furthermore, we show that the dual part of the dual angle on the unit dual sphere corresponds to the p-distance. We call these ruled surfaces we obtained "dual parallel equidis...
Learning Analytics techniques are widely used to improve students’ performance. Data collected from students’ assessments are helpful to predict their success and questionnaires are extensively adopted to assess students’ knowledge. Several mathematical models studying the correlation between students’ hidden skills and their performance to questio...
BERT (Bidirectional Encoder Representations from Transformers) is one of the most popular models in Natural Language Processing (NLP) for Sentiment Analysis. The main goal is to classify sentences (or entire texts) and to obtain a score in relation to their polarity: positive, negative or neutral. Recently, a Transformer-based architecture, the fin...
The assessment of students' performances is one of the essential components of teaching activities, and it poses different challenges to teachers and instructors, especially when considering the grading of responses to open-ended questions (i.e., short-answers or essays). Open-ended tasks allow a more in-depth assessment of students' learning level...
Among the 17 Sustainable Development Goals (SDGs) that make up the 2030 Agenda and refer to different areas of social, economic and environmental development, goal 11.2 concerns access to safe, cheap, accessible and sustainable transport systems, increasing road safety particularly through the enhancement of public transport. Universities can also...
Learning Analytics (LA) is a recent research branch that refers to methods for measuring, collecting, analyzing, and reporting learners' data, in order to better understand and optimize the processes and the environments. Knowledge Tracing (KT) deals with the modeling of the evolution, during the time, of the students' learning process. Particularl...
In this paper, we consider 2 types of instruments traded on the markets, stocks and cryptocurrencies. In particular, stocks are traded in a market subject to opening hours, while cryptocurrencies are traded in a 24-hour market. What we want to demonstrate through the use of a particular type of generative neural network (GAN) is that the instrument...
In this paper, we point out an "affinity" between the system of agents trading in cryptocurrencies and statistical mechanics. In particular, we try to extend the concept of entropy in the sense of Boltzmann to a model in which the particles are replaced by N economic subjects (agents), which are completely described by their ability to buy and to s...
In this study, the Gaussian curvatures of closed parallel ruled surfaces are calculated. We consider parallel ruled surfaces from indicatrix curves associated to Frenet vectors of the curve created on the unit dual sphere.
In this paper, we consider a non-cooperative differential game, in which each of the two competing firms (privately) holds and manages a renewable natural resource in order to produce a homogeneous good. We suppose that each firm’s resource stock grows at a different rate, depending on environmental factors or on firms’ technical experience and ski...
This paper proposes a generalization of Shleifer's (RAND, 1985) model of yardstick competition, to a dynamic framework. Specifically, we consider a differential game and we show that the yardstick mechanism is effective to replicate the first-best solution if players adopt open-loop behaviour rules and they are symmetric at the initial time; in the...
This article proposes a differential game model, in order to analyze markets in which regional regulation is operative and competition is based on quality. The case we have in mind is healthcare public service, where consumers (patients) choose the provider mainly basing on the providers’ location and the quality of services, while prices play a mo...
In this paper we consider the problem of optimal management of human resources in a very peculiar framework that is Health Industry. Starting from a case study we consider a general problem of optimal mobility between employees that offer their services in a multidimensional Health Industry in a wide regional area. The case we have in mind is the p...
In this paper, we consider the sports industry and in particular we focus our study on the European Football. In this market, the more the league is balanced with good teams and the more it becomes profitable. However, empirical data suggest that the top teams involved in more balanced national championships have less probability to win the interna...
In several countries, health care services are provided by public and/or private subjects, and they are reimbursed by the government, on the basis of regulated prices (in most countries, diagnosis‐related group). Providers take prices as given and compete on quality to attract patients. In some countries, regulated prices differ across regions. Thi...
A lot of physicists and economists have contributed to studies showing analogies between physical complex systems and economic and financial markets. In this paper we have compared the complex system of earthquakes with Internet, social media and finance. In particular, we have observed as Omori’s law conforms in both to the evolution of the tweets...
In this paper, we study a duopoly model in which two symmetric firms exploit the same public renewable resource as an input for the production of a homogeneous good. We consider the case where the firms are provided with public incentives in order to prevent the resource exhaustion in a finite time horizon which coincides with the harvesting-licens...
In recent years many technological innovations have been introduced into the olive oil sector, both into the farming system (high and super high density olive orchard) and into oil extraction techniques. As a result players in the sector have to consider different scenarios and have to evaluate many alternatives considering a number of economical,...
In this paper, we study a differential game in which two competing firms exploit a public renewable resource that is relevant from a landscape point of view. We consider a policy maker that provides an instantaneous incentive to the firms in order to prevent the resource exhaustion during the whole extraction period, which coincides with the harves...
L'esigenza di organizzare in maniera sistematica alcuni contenuti pre-corsistici, come le equazioni e disequazioni di primo e secondo grado, è maturata negli anni di insegnamento nei corsi di Matematica Generale tenuti presso il Dipartimento di Economia. La lettura attenta e attiva del testo garantisce di raggiungere un duplice risultato: da un lat...
In questo libro vengono presentate le definizioni principali e le operazioni sui numeri complessi, presentando per ogni caso numerosi esempi ed esercizi. Nella seconda parte del libro si affronta il tema delle applicazioni dei numeri complessi all'algebra dei polinomi. Il libro si chiude con un'appendice che presenta spunti di riflessione per ulter...
Questo volume presenta i principali strumenti matematici necessari nelle applicazioni economiche e finanziarie. In particolare vengono trattati elementi di algebra lineare, calcolo in più variabili e ottimizzazione libera e vincolata. Ogni capitolo è corredato da appendici che illustrano le principali applicazioni economiche e finanziarie degli arg...
Il presente manuale di Informatica di base è rivolto agli studenti dei Corsi di Laurea di Facoltà o Dipartimenti non scientifici che prevedono la verifica di competenze informatiche. Esso cerca di rispondere all'esigenza, maturata negli ultimi anni, di estendere le competenze informatiche anche al di fuori dei Corsi di Laurea ad orientamento spicca...
In this paper, the spherical indicatrix curves drawn by quaternionic frenet vectors are computed. Also the quaternionic geodesic curvatures of the spherical indicatrix curves to E3 and S2 are found.
The signals coming from the real world around us are analog and, in order to treat these quantities with a computer, it is necessary to perform a conversion from analog to digital signals. In this paper we show how the analog signals can be processed digitally. In order to achieve such result we introduce the main definitions necessary for a more c...
In this paper the authors analyse the Italian "IV Conto Energia" for the Photovoltaic in the light of the Ministerial Decree of 05th may 2011. In the first part of the paper the technical aspects of"Conto Energia" are dealt with, highlighting the major changes with respect to the past. The second part of the paper shows a financial analysis of an i...
In the complex frame of the EU agriculture politics, a particular relevant aspect is given by the new regulation on durum wheat production and diffusion incentives. These subsidies are assigned according to a particular indicator (Quality Global Index - QGI), built up through a weighted mean of four qualitative parameters. However, as we are going...
The new Italian regulation for the distribution of the Ordinary Financing “public” Fund (FFO) is included in the framework of the reformation of the University System financing politics. A part of the FFO is bound by a specific merit rating performed by the C.N.V.S.U. (forthcoming A.N.V.U.R.) for the competent Ministry. Such an evaluation results i...
The Manfredonia City Marine is the third in Italy both for its size and for its nation-wide importance, in the last decade a considerable crisis has been registered in this economic sector as shown by the always decreas-ing number of fishing boats registered in the Harbour-Office. As a result of such a reduction in the number of fishing boats, a re...
In this paper we consider financial time series from U.S. Fixed Income Market, S&P500, DJ Eurostoxx 50, Dow Jones,Mibtel and Nikkei 225. It is well known that financial time series reveal some anomalies regarding the EfficientMarketHypothesis and some scaling behaviour, such as fat tails and clustered volatility, is evident. This suggests that fina...
In this paper we study a differential game, for the extraction activity of a renewable good, in which players are overlapping generations. The framework of overlapping generations allows us to consider intragenerational (players in the same generation) and intergenerational (players in different generations) game equilibria. We consider the case in...
The minority game (MG) comes from the so-called “El Farol bar” problem by W.B. Arthur. The underlying idea is competition for limited resources and it can be applied to different fields such as: stock markets, alternative roads between two locations and in general problems in which the players in the “minority” win. Players in this game use a windo...
Nell’ambito della complessa riforma delle politiche di finanziamento del sistema universitario nazionale, si inserisce anche la nuova regolamentazione della ripartizione del Fondo di Finanziamento Ordinario (FFO), che vincola parte della stessa ad una specifica valutazione (ex-post) effettuata dal C.N.V.S.U. (tra breve A.N.V.U.R.) per conto del Min...
In this paper we study a di�erential game, for resource extraction of a renewable good, in which players are overlapping generations of extractors. The framework of overlapping generations allows us to consider intragenerational (players in the same generation) and inter- generational (players in di�erent generations) game equilibrium. We consider...
One of the main problems in managing multidimensional data for decision making is that it is impossible to define a complete ordering on multidimensional Euclidean spaces. In order to solve this problem the scientific community has devolped more and more sofisticated tecniques belonging to the wide framework of Multivariate Statistics. Recently som...
In questo lavoro si considera il problema dello scambio commerciale tra diversi agenti economici utilizzando dei modelli propri della fisica e in particolare della teoria cinetica di un gas rarefatto. La struttura microscopica di un gas � caratterizzata da una miriade di molecole libere di muoversi in un spazio chiuso e di collidere tra loro. In qu...
In this paper we consider financial time series from U.S. Fixed Income Market, S&P500, Exchange Market and Oil Market. It is well known that financial time series reveal some anomalies as regards the Efficient Market Hypotesis and some scaling behavior is evident such as fat tails and clustered volatility. This suggests to consider financial time s...
We study a differential game, for the extraction of a renewable resource, in which players are overlapping generations of extractors. The framework of overlapping generation allows us to consider both intragenerational (players in the same generation) and intergenerational (players in different generations) competition. Since we consider overlappin...
In this paper we study a differential game, for resource extraction of a renewable good, in which players are overlapping generations of extractors. The framework of overlapping generation allows us to consider intragenerational (players in the same generation) and intergenerational (players in different generations) game equilibrium. We consider t...
The long-term fixed income market securities which have a strong positive correlation in daily returns are discussed. The ways to show a more complex structure which depends strictly on the maturity date by using a metrical approach and considering 'modified' time series are shown. It is found that there are essentially three distinct clusters, one...
Combinare insieme piu' mezzi espressivi e' divenuto sempre pi semplice grazie agli sviluppi dell'informatica. I segnali del mondo che ci circonda sono grandezze analogiche, per poter trattare queste grandezze con un elaboratore elettronico e' necessario dapprima convertirle da analogico in digitale. Il presente quaderno trae i suoi contenuti da un...
In this paper I present a time series analysis based on a metrical approach. I use a definition of distance which depends on the sample correlation coefficient among bonds. The dataset consists on daily returns of US treasury bonds. By mean of a Linkage-Algorithm bonds are classified according to the distance which show the cluster structure. It is...
Questo lavoro, attraverso lo studio di modelli per la gestione delle risorse rinnovabili, studia giochi differenziali con orizzonti asincroni e in particolare in presenza di giocatori non perfettamente simmetrici.
The problem of resource extraction (both renewable and nonrenewable) can be studied by considering two important aspects: competition among extractors and intergenerational equity. In resource extraction activity actions of present generations influence the choices of future generation in an obvious way. In order to capture these features we consid...
In this paper a convergence result for the BBGKY hierarchy to a Boltzmann-like equation, in the case of anelastic collision, is shown. Boltzmann-like equations are often used to model dissipative dynamical systems such as granular media. This convergence result aims to make a contribution towards a mathematical foundation to these applications.
The present paper aims to introduce the principal definitions and proof of fundamental properties of the so called "Way Below" relation. We introduce an alternative proof, with respect to \cite{Scott}, of the strong interpolation theorem. The strong interpolation theorem is the theoretical result which provide computational consistency to way below...
We present cross and time series analysis of price fluctuations in the US Treasury fixed income market. Bonds have been classified according to a suitable metric based on the correlation among them. The classification shows how the correlation among fixed income securities depends strongly on their maturity. We study also the structure of price flu...
We present cross and time series analysis of price fluctuations in the U.S. Treasury fixed income market. By means of techniques borrowed from statistical physics we show that the correlation among bonds depends strongly on the maturity and bonds' price increments do not fulfill the random walk hyphoteses.