Search results for " Big Data"
showing 10 items of 23 documents
Human capital evaluation in knowledge-based organizations based on big data analytics
2020
Abstract Starting from a Human Capital Analysis Model, this work introduces an original methodology for evaluating the performance of employees. The proposed architecture, particularly well suited to the special needs of knowledge-based organizations, is articulated into a framework able to manage cases where data is missing and an adaptive scoring algorithm takes into account seniority, performance, and performance evolution trends, allowing employee evaluation over longer periods. We developed a flexible software tool that gathers data from organizations in an automatic way – through adapted connectors – and generates abundant results on the measurement and distribution of employees’ perf…
Knowledge Extraction from Biological and Social Graphs
2022
Many problems from the real life deal with the generation of enormous, varied, dynamic, and interconnected datasets coming from different and heterogeneous sources. This PhD Thesis focuses on the proposal of novel knowledge extraction techniques from graphs, mainly based on Big Data methodologies. Two application contexts are considered: Biological and Medical data, with the final aim of identifying biomarkers for diagnosis, treatment, prognosis, and prevention of diseases. Social data, for the optimization of advertising campaigns, the comparison of user profiles, and neighborhood analysis.
Heart of Stone... and of Data
2019
Sono i data oggi a definire i luoghi e in particolare la narrazione degli stessi
LA MOBILITÀ EXTRA-REGIONALE. I DIVERSI TIPI DI MOBILITÀ E ANALISI DELLE SPESE PER TIPOLOGIA DI PRESTAZIONE IN SICILIA ATTRAVERSO L’USO DELLA BASE DATI
2013
Introduzione. È noto come un fenomeno che spesso faaumentare i costi della sanità senza modificare la qualità dell’assistenza è la mobilità sanitaria. D’altra parte, la mobilità sanitaria è un diritto dei cittadini che possono rivolgersi a qualsiasistruttura, senza vincoli territoriali, per cercare una risposta ai propri bisogni. Obiettivi. Il presente lavoro vuole indagare alcune delle principali caratteristiche della mobilità extraregionale, o mobilità passiva, definita dai soggetti residenti in regione che fruiscono dell’assistenza sanitaria in regioni diverse da quella di appartenenza. Attraverso l’utilizzo della BDA – sviluppata nell’ambito del Piano Operativo di Assistenza Tecnica all…
The Power of Word-Frequency Based Alignment-Free Functions: a Comprehensive Large-Scale Experimental Analysis
2021
Abstract Motivation Alignment-free (AF) distance/similarity functions are a key tool for sequence analysis. Experimental studies on real datasets abound and, to some extent, there are also studies regarding their control of false positive rate (Type I error). However, assessment of their power, i.e. their ability to identify true similarity, has been limited to some members of the D2 family. The corresponding experimental studies have concentrated on short sequences, a scenario no longer adequate for current applications, where sequence lengths may vary considerably. Such a State of the Art is methodologically problematic, since information regarding a key feature such as power is either mi…
Ontology-based Integration of Web Navigation for Dynamic User Profiling
2015
The development of technology for handling information on a Big Data-scale is a buzzing topic of current research. Indeed, improved techniques for knowledge discovery are crucial for scientific and economic exploitation of large-scale raw data. In research collaboration with an industrial actor, we explore the applicability of ontology-based knowledge extraction and representation for today's biggest source of large-scale data, the Web. The goal is to develop a profiling application, based on the implicit information that every user leaves while navigating the online, with the goal to identify and model preferences and interests in a detailed user profile. This includes the identification o…
Il corpo fisico dell'architettura interattiva : approcci scenario-based e generativo
2021
La complessità della realtà, insieme fisica e virtuale, nella quale siamo immersi richiede una riflessione su come realizzare una integrazione tra il mondo del digitale e l’architettura contemporanea. In particolare, l’articolo intende esplorare il modo in cui le informazioni virtuali possano divenire materie progettuali, intervenendo anche sui caratteri spaziali e formali del costruito. Pertanto si tratteranno due diversi approcci nelle architetture interattive, uno scenario-based e un altro generativo, capaci di stabilire i confini fisici della relazione tra architettura e informazioni. Jade Eco Park, Translated Geometries e One Ocean Pavilion offrono una diversa chiave di lettura del rap…
GAMLSS for Big Data: Roc Curve prediction using Twitter data
2017
During last years, Big Data appears as one of the most innovative and growing scientific area of interest. In this field, finding reliable methods to make accurate predictions represents one of the most inspirational challenges. The way to make prediction in the following paper is the use of ROC (Receiver Operating Characteristic) Curve, a binary prediction tool, often used for medical tests. The attention is focused in particular on the implementation of ROC Curve in GAMLSS (Generalized Additive Models for Location Scale and Shape), semi-parametric models suitable for huge and flexible dataset. An application will be shown where the class of GAMLSS is applied to Twitter data in order to pr…
Web mining e Application Programming Interfaces: caratteristiche, strumenti, prospettive e limiti
2014
Big Data e Inteligencia Artificial. Una visión económica y legal de estas tecnologías disruptivas
2018
El Big Data y la Inteligencia Artificial son elementos clave para una mayor eficiencia operativa y capacidad de respuesta en diferentes ámbitos. Su implantación en la economía del conocimiento será un factor determinante que indicará en el futuro próximo la fortaleza o la debilidad de un país. Dos conocedores en profundidad de estas tecnologías disruptivas son quienes conducen el peso de este ebook, en el cual se reflexiona sobre sus aplicaciones en su vertiente económica, legal y práctica: Andrés Pedreño, catedrático de Economía Aplicada, explica junto al profesor Luis Moreno los impactos sectoriales de la IA, así como su afectación al empleo y la aplicabilidad a la pequeña y mediana empre…