8,516 research outputs found

    Upgrading Relational Legacy Data to eh Semantic Web

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    In this poster, we describe a framework composed of the R2O mapping language and the ODEMapster processor to upgrade relational legacy data to the Semantic Web. The framework is based on the declarative description of mappings between relational and ontology elements and the exploitation of such mapping descriptions by a generic processor capable of performing both massive and query driven data upgrade

    Fund Finder: A case study of database-to-ontology mapping

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    The mapping between databases and ontologies is a basic problem when trying to "upgrade" deep web content to the semantic web. Our approach suggests the declarative definition of mappings as a way to achieve domain independency and reusability. A specific language (expressive enough to cover some real world mapping situations like lightly structured databases or not 1st normal form ones) is defined for this purpose. Along with this mapping description language, the ODEMapster processor is in charge of carrying out the effective instance data migration. We illustrate this by testing both the mappings definition and processor on a case study

    One model, two languages: training bilingual parsers with harmonized treebanks

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    We introduce an approach to train lexicalized parsers using bilingual corpora obtained by merging harmonized treebanks of different languages, producing parsers that can analyze sentences in either of the learned languages, or even sentences that mix both. We test the approach on the Universal Dependency Treebanks, training with MaltParser and MaltOptimizer. The results show that these bilingual parsers are more than competitive, as most combinations not only preserve accuracy, but some even achieve significant improvements over the corresponding monolingual parsers. Preliminary experiments also show the approach to be promising on texts with code-switching and when more languages are added.Comment: 7 pages, 4 tables, 1 figur

    Universal, Unsupervised (Rule-Based), Uncovered Sentiment Analysis

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    We present a novel unsupervised approach for multilingual sentiment analysis driven by compositional syntax-based rules. On the one hand, we exploit some of the main advantages of unsupervised algorithms: (1) the interpretability of their output, in contrast with most supervised models, which behave as a black box and (2) their robustness across different corpora and domains. On the other hand, by introducing the concept of compositional operations and exploiting syntactic information in the form of universal dependencies, we tackle one of their main drawbacks: their rigidity on data that are structured differently depending on the language concerned. Experiments show an improvement both over existing unsupervised methods, and over state-of-the-art supervised models when evaluating outside their corpus of origin. Experiments also show how the same compositional operations can be shared across languages. The system is available at http://www.grupolys.org/software/UUUSA/Comment: 19 pages, 5 Tables, 6 Figures. This is the authors version of a work that was accepted for publication in Knowledge-Based System

    R2O, an extensible and semantically based database-to-ontology mapping language

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    We present R2O, an extensible and declarative language to describe mappings between relational DB schemas and ontologies implemented in RDF(S) or OWL. R2O provides an extensible set of primitives with welldefined semantics. This language has been conceived expressive enough to cope with complex mapping cases arisen from situations of low similarity between the ontology and the DB models

    Legal Ontologies for the spanish e-Government

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    The Electronic Government is a new field of applications for the semantic web where ontologies are becoming an important research technology. The e-Government faces considerable challenges to achieve interoperability given the semantic differences of interpretation, complexity and width of scope. In this paper we present the results obtained in an ongoing project commissioned by the Spanish government that seeks strategies for the e-Government to reduce the problems encountered when delivering services to citizens. We also introduce an e-Government ontology model; within this model a set of legal ontologies are devoted to representing the Real-estate transaction domain used to illustrate this paper

    Towards Syntactic Iberian Polarity Classification

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    Lexicon-based methods using syntactic rules for polarity classification rely on parsers that are dependent on the language and on treebank guidelines. Thus, rules are also dependent and require adaptation, especially in multilingual scenarios. We tackle this challenge in the context of the Iberian Peninsula, releasing the first symbolic syntax-based Iberian system with rules shared across five official languages: Basque, Catalan, Galician, Portuguese and Spanish. The model is made available.Comment: 7 pages, 5 tables. Contribution to the 8th Workshop on Computational Approaches to Subjectivity, Sentiment and Social Media Analysis (WASSA-2017) at EMNLP 201

    La comunicación como instrumento de la diplomacia pública

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    Public opinion has become an important factor in international relations. The symbiosis between diplomacy and media has approached the “general public” to international negotiation processes. Technological evolution has changed the paradigms of communication also in the international sphere, where the actors have to apply new techniques and strategies in its external action to move your messages to the global Public Opinion. International action in our days longer consists not only in managing a country’s foreign policy, but also sending a message appropriate to the target audience. In this paper we analyze communication as a tool of foreign policy, public diplomacy and the image of Spain out of its borders.La opinión pública se ha convertido hoy en un factor relevante en las relaciones internacionales. La simbiosis entre diplomacia y medios de comunicación ha acercado al “gran público” a los procesos de la negociación internacional. La evolución tecnológica ha modificado los paradigmas de la comunicación también en la esfera internacional, en donde los actores tienen que aplicar nuevas técnicas y estrategias en su acción exterior para trasladar sus mensajes a la opinión pública global. La acción internacional en nuestros días ya no sólo consiste en gestionar la política exterior de un país, sino también en enviar los mensajes adecuados a los públicos objetivo. En este documento analizamos la comunicación como herramienta de la política exterior, de la diplomacia pública y de la imagen de España en el exterior

    La comunicación en vivo: eventos y visibilidad, clave en las organizaciones

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    There is a growing desire of institutions to communicate through events as a way to directly access the audience, in a model that includes communication skills, marketing and event management. Joining these techniques is therefore a very current exercise for a live communication. In this paper we report a discussion of the use of current technology as a tool for the live communication, as long as it use in all phases of an event: preparation, event itself and post-event.Existe un creciente deseo de las instituciones de comunicar a través de los eventos como forma de acceder a las audiencias de forma directa, en un modelo que engloba técnicas de comunicación, marketing y organización de eventos. Unir estas técnicas es un sistema muy adecuado de ejercer la comunicación en vivo. En este trabajo recogemos un análisis sobre el uso de la tecnología actual como herramienta de esa comunicación en vivo y que se utiliza en todas las fases de un evento: la preparación, el evento en sí y el posevento
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