Search results for " Models"
showing 10 items of 4240 documents
An Innovative Statistical Tool for Automatic OWL-ERD Alignment
2016
Aligning two representations of the same domain with different expressiveness is a crucial topic in nowadays semantic web and big data research. OWL ontologies and Entity Relation Diagrams are the most widespread representations whose alignment allows for semantic data access via ontology interface, and ontology storing techniques. The term ""alignment" encompasses three different processes: OWL-to-ERD and ERD-to-OWL transformation, and OWL-ERD mapping. In this paper an innovative statistical tool is presented to accomplish all the three aspects of the alignment. The main idea relies on the use of a HMM to estimate the most likely ERD sentence that is stated in a suitable grammar, and corre…
Building agents with agents and patterns
2006
The use of design patterns proved successful in lowering the development time and number of errors when producing software with the object-oriented paradigm. Now the need for a reuse technique is occurring for the emergent agent paradigm, for which a great effort is currently spending in methodology definitions. In this work we present our experiences in the identification, description, production and use of agents patterns. A repository of patterns was enriched during these years so to request a classification criteria and a documentation template useful to help user during the selection
Pedestrian Tracking in 360 Video by Virtual PTZ Cameras
2018
Since the data acquired by a PTZ camera change while adjusting the pan, tilt and zoom parameters, the results of tracking algorithms are difficult to reproduce; such diffi- culty limits the development and the comparison of tracking algorithms with PTZ cameras. The recently introduced 360- degree cameras acquire spherical views of the environment, generally stored as equirectangular images. Each pixel of an equirectangular image corresponds to a point on the spherical surface. A gnomonic projection can be used to project the points on the spherical surface onto a plane tangent to the sphere. Such tangent plane can be interpreted as the image plane of a virtual PTZ camera oriented towards th…
A perceptual sound space for auditory displays based on sung-vowel synthesis.
2022
AbstractWhen designing displays for the human senses, perceptual spaces are of great importance to give intuitive access to physical attributes. Similar to how perceptual spaces based on hue, saturation, and lightness were constructed for visual color, research has explored perceptual spaces for sounds of a given timbral family based on timbre, brightness, and pitch. To promote an embodied approach to the design of auditory displays, we introduce the Vowel–Type–Pitch (VTP) space, a cylindrical sound space based on human sung vowels, whose timbres can be synthesized by the composition of acoustic formants and can be categorically labeled. Vowels are arranged along the circular dimension, whi…
The role of synergies within generative models of action execution and recognition: A computational perspective. Comment on "Grasping synergies: A mo…
2015
Controlling the body – given its huge number of degrees of freedom – poses severe computational challenges. Mounting evidence suggests that the brain alleviates this problem by exploiting “synergies”, or patterns of muscle activities (and/or movement dynamics and kinematics) that can be combined to control action, rather than controlling individual muscles of joints [1–10]. D’Ausilio et al. [11] explain how this view of motor organization based on synergies can profoundly change the way we interpret studies of action recognition in humans and monkeys, and in particular the controversy on the “granularity” of the mirror neuron system (MNs): whether it encodes either (lower) kinematic aspects…
The Bleeding of Legal Rules between Rights and Limits
2018
This paper, starting from the consideration that modern migratory flows and the enormous circulation of people and rules imply the "dying out" of alien principles and practices on the canvas of the host legal system, wants to ask itself about the "limits" beyond which the host system (and its socio-cultural tradition, or rather its national "spirit") ends up reacting to protect its integrity and within which instead the host system itself welcomes and accepts the "discoloration" or contamination. In a microcomparative way, some aspects of the English, French, Italian and Japanese systems will be compared to evaluate the answers to phenomena of contamination or dying of "alien" rules on the …
L’educazione del giurista contemporaneo
2021
Il tema dell’educazione giuridica presuppone che si risponda alla domanda “che cos’è il diritto?”. Come questa domanda ammette risposte diverse, a seconda dei tempi, dei luoghi e dell’ideologia di chi risponde, allo stesso modo non esiste un modello unico, o un ideal tipo, di educazione giuridica. Il giurista cambia, e deve cambiare, a seconda della pratica giuridica e della cultura giuridica in cui si trova a operare. Una riflessione sull’educazione giuridica non può dunque prescindere dal contesto. Legal education solicits the search for a preliminary answer to the question “what is the law?”. As this latter question allows different answers depending on times, places and personal ideolog…
Desobediencia civil y participación política. Unas cuestiones abiertas para las democracias constitucionales (y la teoría del derecho)
2015
In this article I try to show some problems of the interpretation of civil disobedience as a practice that aims to maintain democratic principles against discriminative legal patterns or oligarchic forces. I will present two doctrines, the Rawlsian (followed by Habermas) and the one proposed recently by supporters of a radical constitutional change through the exercise of “constituent power”. The Rawlsian account a) offers a too stringent model of justification of this type of practice and b) does not recognize the plurality of subjects to which civil disobedience appeal. The supporters of radical constitutional change fall into a form of heterogony of ends. They reject liberal accounts of …
Within the symbolic world of the prehistoric hunters: A GIS-based and 3D model analysis of sites with complexes of linear incisions in western Sicily
2021
Abstract The prehistoric peopling of Sicily has left scattered traces of symbolic activities through well-known rock art expressions in caves and rock shelters located all around the island (among the most significant, the sites of Addaura, Racchio and Genovese). A peculiar phenomenon is the incision of linear signs, often grouped on the same rocky walls, hidden in fissures or placed at the entrance of the underground chambers of caves. In this report, we investigate a sample of these graphic expressions from a spatial and technical point of view. A GIS-based approach presents the territorial pattern providing insight, on a macroscale, into the intentional positioning of the sign complexes.…
Discovery of recurring behavioural sequences in Wistar rat social activity: Possible support to studies on Autism Spectrum Disorders.
2017
This study was undertaken to investigate whether, in rat interactive activities, recurring sequences of behavioural events might be identified and how and to what extent each component of the pair is involved. To this aim, the multivariate temporal-pattern (t-pattern) analysis was applied to the social interactions of 9 pairs of male Wistar rats tested in open field. Interactive activities were classified into intra- and inter-subjects. Quantitative evaluations showed that intra-subject behavioural elements represented 62.37% and inter-subject ones 37.63% of the comprehensive behaviour. T-pattern analysis revealed the presence of 221 different t-patterns organized in four different categori…