Search results for "Semantic"

Theognis of Megara and the Divine Creating Power in the Framework of Semiotic Textology: An Application of János Sándor Petöfi’s Theory to Archaic Gr…

2012

This paper is a demonstration of an application of Semiotic Textology to a limited case study. The main aspects of Semiotic Textology, the theory elaborated by Petöfi, are presented; secondly the linguistic aspects of the interpretation of lines 133-134 of the Theognis of Megara's poem, analysed in the framework of said theory, are presented. All the relevant syntactic, semantic, pragmatic information involved in text processing have been considered. Through fixed steps, it is shown that text processing is not exclusively a grammatical activity, because within a theoretical interpretation an Interpreter needs a number of contextual hypotheses, in order to understand the author's ontology. ©…

A novel dynamic multi-model relevance feedback procedure for content-based image retrieval

2016

This paper deals with the problem of image retrieval in large databases with a big semantic gap by a relevance feedback procedure. We present a novel algorithm for modelling the users's preferences in the content-based image retrieval system.The proposed algorithm considers the probability of an image belonging to the set of those sought by the user, and estimates the parameters of several local logistic regression models whose inputs are the low-level image features. A Principal Component Analysis method is applied to the original vector to reduce its high dimensionality. The relevance probabilities predicted by these local models are combined by means of a weighted average. These weights …

The what, when, where, and how of visual word recognition

2014

A long-standing debate in reading research is whether printed words are perceived in a feedforward manner on the basis of orthographic information, with other representations such as semantics and phonology activated subsequently, or whether the system is fully interactive and feedback from these representations shapes early visual word recognition. We review recent evidence from behavioral, functional magnetic resonance imaging, electroencephalography, magnetoencephalography, and biologically plausible connectionist modeling approaches, focusing on how each approach provides insight into the temporal flow of information in the lexical system. We conclude that, consistent with interactive a…

The emotional timeline of September 11, 2001.

2010

Using Topic Modeling Methods for Short-Text Data: A Comparative Analysis

2020

With the growth of online social network platforms and applications, large amounts of textual user-generated content are created daily in the form of comments, reviews, and short-text messages. As a result, users often find it challenging to discover useful information or more on the topic being discussed from such content. Machine learning and natural language processing algorithms are used to analyze the massive amount of textual social media data available online, including topic modeling techniques that have gained popularity in recent years. This paper investigates the topic modeling subject and its common application areas, methods, and tools. Also, we examine and compare five frequen…

Learning Similarity Scores by Using a Family of Distance Functions in Multiple Feature Spaces

2017

There exist a large number of distance functions that allow one to measure similarity between feature vectors and thus can be used for ranking purposes. When multiple representations of the same object are available, distances in each representation space may be combined to produce a single similarity score. In this paper, we present a method to build such a similarity ranking out of a family of distance functions. Unlike other approaches that aim to select the best distance function for a particular context, we use several distances and combine them in a convenient way. To this end, we adopt a classical similarity learning approach and face the problem as a standard supervised machine lea…

Automatic Extraction of Semantic Roles in Support Verb Constructions

2021

This paper deals with paraphrastic relations in Italian. In the following sentences: (a) Max strappò delle lacrime a Sara 'Max moved Sara to tears' and (b) Max fece piangere Sara 'Max made Sara cry', the verbs differ syntactically and semantically. Strappare 'tear/rip/wring' is transitive, fare ‘have/make’ is a causative, and piangere 'cry' is intransitive. Despite this, a translation of (a) as (b) is legitimate and therefore (a) is a paraphrase of (b). In theoretical linguistics this raises an issue concerning the relationship between strappare and fare/piangere in Italian, and that in English between move and make. In computational linguistics, can such paraphrases be obtained automatical…

Translation and the Politics of Circulating Ideas

2018

This chapter explores the politics of circulating ideas, as part of a broader reflection on the circulation/diffusion/transfer/transplantation of concepts and ideas in the EU. The chapter starts with a discussion of some main points of Pierre Bourdieu’s text on the international circulation of ideas in which he develops a framework for the analysis of the diffusion of culture. The author then proceeds to develop some further lines of inquiry for an alternative social science approach to these issues. He explores the mechanisms by which ideas and concepts are associated to one another, how they form semantic fields, how they come to form institutionalized and taken-for-granted horizons of ac…

An ontological infrastructure for the automatic control of freight transport

2008

Currently, freight transport carried through a country or through different countries undergoes many delays due to merchandise controls. Merchandise control is only carried out at some border posts or when the authorities demand it. Such control can be an important problem since there are different laws for the same merchandise, according to the legislation of the country and even within the same country. Nowadays there are vocabularies or languages that describe concepts and structures of data related to transport, but the description is just syntactic, not semantic. Therefore the objective to be reached in this part of the research has been to develop a representation scheme of a particul…

Análisis de la implementación Schema.org en el repositorio RODERIC e impacto en el posicionamiento en Google y Google Scholar

2021

espanolSe presenta la implementacion de Schema.org en el repositorio RODERIC de la Universitat de Valencia. Para el analisis del impacto de la implementacion se han definido ocho indicadores que se han analizado en Google Search y Google Scholar segun el caso: visitas, visitas a registros bibliograficos, documentos descargados, impresiones, clics, CTR, posicion media en la SERP y posicion en la SERP que fueron analizados durante dos periodos consecutivos de un ano, antes y despues de la implementacion. Los resultados obtenidos muestran resultados desiguales para ambos buscadores. En el caso de Google Search, a pesar de conseguirse un incremento considerable en el numero de impresiones (21,0…