815 research outputs found
A non-monotonic approach to semantic matchmaking and request refinement in e-marketplaces
No full textWe present and motivate a formal approach and algorithms for semantic matchmaking in an e-commerce framework. The proposed solution exploits nonmonotonic inferences to compute semantic-based ranking of offers and provides explanation services in the query-retrieval-refinement loo
UBI-CARE: ubiquitous learning per medici e pazienti
No full textL’esigenza di tenere sotto controllo la spesa sanitaria, la volontà di mantenere un servizio assistenziale efficiente con alti standard qualitativi e l’aumento delle malattie croniche,
hanno condotto negli ultimi anni alla sperimentazione di
nuovi modelli di cura. Nel caso delle patologie croniche si
sta assistendo alla diffusione di modelli di “disease
management” in cui continuità assistenziale ed integrazione
tra ospedale e territorio consentono una più razionale
gestione del paziente a domicilio. Tali modelli si basano sul
presupposto che ci sia un’elevato scambio di esperienze e
conoscenze fra i centri ospedalieri di eccellenza, preposti
alla cura delle fasi acute, i centri di assistenza deputati alla
gestione ordinaria della malattia, il malato e i suoi familiari. Il
presente contributo illustra il progetto UBI-CARE che
coniuga l’approccio mobile e quello social per favorire
l’assistenza continua del malato cronico
Semantic-enhanced EPCglobal Radio-Frequency IDentification
No full textWe propose to enhance EPCglobal RFIDs enriching them
with semantic capabilities. Memory organization of tags and the data
exchange protocol are exploited and extended to the purpose. By design,
the proposed enhancements do not alter the basic behavior of protocol
and tag memory organization and are thus fully backward compatible. In
order to store annotated descriptions a compression algorithm for DIG
descriptions has also been devised. We report here results in comparison
with other XML-based compression tools and simulations for enhanced
tags reading and decompression
Feature Integration and Relevance Feedback Analysis in Image Similarity Evaluation
No full textIn this article we describe the results of a study on similarity evaluation in image retrieval using color, object orientation, and relative position as content features, in a framework oriented to image repositories where the semantics of stored images are limited to a specific domain. The focus is not on a complete description of image content, which is supposed to be known to some extent, but on the extraction of simple and immediate features that can assure, through their combination, automated image analysis and efficient retrieval. Relevance feedback is introduced as an effective way to improve retrieval accuracy. A simple prototype system is also introduced that competes feature descriptors and allows users to enter queries, browse the retrieved images, and refine the results through relevance feedback analysis
Un sistema web-based per la gestione, la classificazione e il recupero efficiente della documentazione di scavo
No full textil paper descrive il sistema di database management realizzato per il progetto Itinera. Il sistema, basato su tecnologie open source, permette la catalogazione e la gestione di differenti tipi di informazioni
Learning algorithm for pattern classification using cellular neural networks
No full textA new learning algorithm for pattern classification using cellular neural networks is described. The authors show that patterns belonging to the training set as well as patterns outside it can be classified reliably using the proposed algorithm. Comparisons with well established classification techniques clearly highlight the performances of the approach developed herein
Query by sketch and relevance feedback for content-based image retrieval over the web
No full textContent-based image retrieval systems are being actively investigated owing to their ability to retrieve images based on the actual visual content rather than by manually associated textual descriptions. This paper considers the issues related to the porting of such systems to the World Wide Web and proposes some ways to solve them. To substantiate our ideas, we propose a web-based image retrieval system that allows the user to express a query as a simple sketch portraying 'what' she/he is looking for. The system relies on a three-layer relevance feedback architecture to progressively refine retrieval results according to the user's preferences. We also emphasize the use of the vector space model for features representation and the cosine distance for similarity ranking. Performances are presented using both well-assessed information retrieval measures and subjective evaluation criteria
Il diritto di proprietà nella Carta di Nizza. Recenti orientamenti giurisprudenziali della Corte di giustizia e dei giudici nazionali
No full textA new learning algorithm for pattern classification using cellular neural networks
No full textIn this paper a new learning algorithm for pattern classification using cellular neural networks is described. In particular, it is shown that patterns belonging to the training set as well as patterns outside it can be reliably classified using the proposed algorithm. Finally, comparisons with well-established classification techniques are carried out, with the aim to highlight the performances of the approach developed herei
Il borgo abbandonato di Craco (MT). Problemi di conservazione e prospettive di valorizzazione
No full textLo studio del borgo abbandonato di Craco (MT), cominciando dagli edifici più rappresentativi, è il primo passo di un itinerario di ricerca volto all’elaborazione di un progetto di conservazione e valorizzazione dell’organismo urbano che, nel rispetto del carattere dei luoghi, non può non tener conto della critica condizione geologica e del problema della messa in sicurezza. Gli edifici parzialmente crollati agevolano lo studio
anatomico delle sezioni murarie e dei materiali, favorendo la comprensione costruttiva degli organismi architettonici che rischiano di scomparire lentamente, ma inesorabilmente. Solo l’intima conoscenza degli edifici nella loro anatomia costruttiva, la consapevolezza del loro reale stato di conservazione, l’individuazione delle loro vocazioni funzionali, possono
orientare (attraverso misure di salvaguardia, indicazioni, prescrizioni, vincoli) il progetto di restauro basato, auspicabilmente, sui criteri di minimo intervento, compatibilità, riconoscibilità.The study of the abandoned village of Craco (MT), starting with the most representative buildings, is the first step of a research itinerary aimed at developing a project for the conservation and revitalized of the urban organism which, while respecting the character of the places, cannot fail to take into account the critical geological condition and the problem of safety. Partially collapsed buildings facilitate study
anatomical of the masonry sections and materials, favoring the constructive understanding of the architectural organisms that are in danger of disappearing slowly but inexorably. Only the intimate knowledge of the buildings in their constructive anatomy, the awareness of their real state of conservation, the identification of their functional vocations, can
orient (through safeguard measures, indications, prescriptions, constraints) the restoration project based, hopefully, on the criteria of minimum intervention, compatibility, recognizability
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