Victor Saquicela

• PhD en Ciencias de la Computacion e Inteligencia Artificial
• Research at University of Cuenca

Fecha de recepción: 28 de septiembre 2015-Fecha de aceptación: 12 de octubre 2015 RESUMEN Este trabajo describe una plataforma que permite automatizar el proceso de anotación semántica sobre imágenes médicas, sin depender de la ontología utilizada. Las anotaciones automáticas se realizan mediante: (a) un proceso de conversión de imágenes médicas DI...

Nutrition is undoubtedly a significant factor in disease prevention, and keeping track of it is incredibly important for our overall health. One of the latest technologies that has emerged to help healthcare professionals and users make informed decisions is the Knowledge Graph (KG). These models have been used to implement various knowledge-based...

History shows that different events occur every day in the world. In the past, knowledge of these events could only be orally transmitted from generation to generation due to a lack of appropriate technology. Currently, vast amounts of valuable historical information rests in deteriorated historical newspapers, which result very difficult to deal w...

The Spatial Data Infrastructure initiatives are now broadly developed and deployed. However, while plenty of tools use them, some tasks are still complex to perform by non‐expert users, such as finding, accessing, and using some of their related OGC Web Services (OWS). One of the main reasons for these challenges is associated with semantic heterog...

Ozone is the most harmful secondary pollutant in terms of negative effects on climate change and human health. Predicting ozone emission levels has therefore gained importance within the field of environmental management. This study, performed in the Andean city of Cuenca, Ecuador, compares the performance of two methodologies currently used for th...

Ensure traceability and orchestration of the participants in the food supply chain can help improve the food production and reduce the distribution of unsafe or low-quality products. This article provides some insights about the design of a high-level architecture to support a semantic blockchain platform that ensures traceability and orchestration...

The problem of developing an application based on microservices is gaining traction over monolithic applications. Similarly to REST-based applications, their architecture may provide benefits in tasks related to their development and deployment. In this paper, we present an approach for the development and deploy of applications based on microservi...

Academic data management has become an increasingly challenging task as research evolves over time. Essential tasks such as information retrieval and research networking have turned into extremely difficult operations due to an ever-growing number of researchers and scientific articles. Numerous initiatives have emerged in the IT environments to ad...

Actualmente, la gran cantidad de información geográfica generada por diferentes instituciones exige que se propongan nuevas soluciones de gestión y publicación de estos datos. En Ecuador, la heterogeneidad de la información geográfica generada por diversos entes y publicada en la Web no es una excepción. Con el objetivo de dar solución a esta probl...

Actualmente, la gran cantidad de información geográfica generada por diferentes instituciones exige que se propongan nuevas soluciones de gestión y publicación de estos datos. En Ecuador, la heterogeneidad de la información geográfica generada por diversos entes y publicada en la Web no es una excepción. Con el objetivo de dar solución a esta probl...

We propose a novel unsupervised two-phased classification model leveraging from semantic web technologies for discovering common research fields between researchers based on information available from a bibliographic repository and external resources. The first phase performs coarse-grained classification by knowledge disciplines using as reference...

Digital repositories have been used by Universities and Libraries to store their bibliographic, scientific, and/or institutional contents, and then make their corresponding metadata publicly available to the web and through the OAI-PMH protocol. However, such metadata is not descriptive enough for a document to be easily discoverable. Even though t...

Electronic Program Guides (EPGs) are usual resources aimed to inform the audience about the programming being transmitted by TV stations and cable/satellite TV providers. However, they only provide basic metadata about the TV programs, while users may want to obtain additional information related to the content they are currently watching. This pap...

Linked Open Data (LOD) generation is a common activity within organizations due to its advantages for sharing and reusing information. Since these technologies require specialized knowledge, the development of technological and methodological tools that allows its implementation is limited. Most of the current solutions are built on top of specific...

Air pollution is a critical environmental problem with detrimental effects on human health that is affecting all regions in the world, especially to low-income cities, where critical levels have been reached. Air pollution has a direct role in public health, climate change, and worldwide economy. Effective actions to mitigate air pollution, e.g. re...

Currently, students' mobility in Higher Education has become very common and frequent. Although the transitioning process could be thought to be smooth and quick, students moving from one institution to another must go through rigorous and unfortunately, non-standardized academic validation processes. Usually, most part of the process, including cr...

Research networking is a difficult part of academics in spite of the multiple benefits that the Web has brought within this field in recent years. Even though scientific and business social networks provide a medium to discover peers worldwide, their usefulness meets its limits when real-world requirements come in. The broad audience of those tools...

Research networking is a difficult part of academics in spite of the multiple benefits that the Web has brought within this field in recent years. Even though scientific and business social networks provide a medium to discover peers worldwide, their usefulness meets its limits when real-world requirements come in. The broad audience of those tools...

Nowadays, the information of university courses is managed by means of syllabus based systems, this is the case of Ecuadorian Higher Education Institutions (IES for its Spanish acronym). However, the syllabus structure is not normalized among all universities, since there is a wide variety of formats and data models used for each IES which naturall...

This article follows step by step a general framework for fingerprint extraction in order to develop a system for advertisements’ monitoring. The parameterization process uses some spatial and spectral characteristics measured over 600 advertisements that contain various types of sounds. Key factors such as accuracy, process time, and granularity a...

A key element to enable the analysis and accessing to radio broadcast content is the development of automatic speech-to-text systems. The building of these systems has been possible given the current available of different speech resources, models, and open source services designed mainly for English language. However, the most of these tools have...

Searching for scientific publications online is an essential task for researchers working on a certain topic. However, the extremely large amount of scientific publications found in the web turns the process of finding a publication into a very difficult task whereas, locating peers interested in collaborating on a specific topic or reviewing liter...

The System Architecture definition of the majority of organizations requires a deep understanding about its environment and organizational structure; nevertheless, the construction of such models is not an easy task because of the gap of knowledge and communication between the technical and administrative staff. The DHARMA method, which makes inten...

En los últimos años, el número de investigadores en Ecuador que publican sus trabajos en diferentes líneas de investigación ha aumentado considerablemente. La identificación de áreas similares de investigación se ha convertido en una necesidad para generar redes de investigadores interesados en la creación de nuevos proyectos en torno a las Institu...

Teleradiology systems tackle the problem of transferring radiological images between medical image workstations for facilitating different medical activities, e.g., diagnosis, treatment and follow up a patient, medical training, or consulting second opinion. Nowadays, m-Health (aka mobile health) is becoming popular because of high quality of mobil...

The System Architecture definition of the majority of organizations requires a deep understanding about its environment and organizational structure; however, the construction of such models is not an easy task because of the gap of knowledge and communication between the technical and administrative staff. The DHARMA method, which makes intensive...

Resumen: La definición de Arquitecturas de Software de la mayoría de organizaciones requiere una profunda comprensión de su entorno y estructura organizacional; sin embargo, la construcción de dichos modelos no es una tarea fácil debido a las brechas de conocimiento y comunicación entre los interesados, técnicos y administrativos. El método DHARMA,...

Advances in medical imaging have fostered medical diagnosis based on digital images. However, there are still a relatively small number of experienced radiologists, then, a collaborative work and tele-radiology systems are required to effectively scale up to this diagnosis trend. We tackle the problem of the collaborative access of medical images,...

This article presents the development of a system aimed to aid people with speech and/or communication disabilities, who must use the sign language and the dactilologic alphabet in order to transmit their ideas. To assist others in understanding such language, we present an experimental approach for sign language characters recognition through digi...

This paper present a framework ontology-independent for the automatic semantic annotation of medical images. The automatic annotation is done by (a) semantifying of DICOM medical images (RDF-ization) automatically; (b) Integration of different biomedical ontologies, through the matching process between ontologies and DICOM metadata, making this app...

Ecuador contains an immense collection of hydro-meteorological data, normally exposed through standards that tell us how to locate and invoke them. If we want to make such data potentially easier to understand and use, we need to store them in a common repository and annotate them formally by means of descriptive metadata. This paper propose an app...

This work is a novel contribution for enriching medical images using semantic annotations with a strategy for unifying different ontologies and instances of DICOM medical files. We present the L-MOM library (Library for Mapping of Ontological Metadata) as a tool for making an automatic mapping between instances of DICOM medical files and different...

Compared to analog transmissions, Digital Television (DTV) standards allows a higher number of available TV stations and consequently, a larger entertainment offer. In this context, Recommender Systems (RS) support users in choosing entertainment content by narrowing their options to a reduced set based on their preferences an interests. However, n...

This article provides a comprehensive literature review and classification method for data mining techniques applied to academic libraries. To achieve this, forty-one practical contributions over the period 1998-2014 were identified and reviewed for their direct relevance. Each article was categorized according to the main data mining functions: cl...

From the point of view of access to metadata from distributed repositories, the Open Archives Initiative (OAI) proposed a protocol for the interchange and harvesting of metadata called OAI-PMH. This protocol provide a low degree of interoperability, however, with an approach based on semantic technologies, the interoperability of data can reach a h...

This paper summarizes the implementation process of the Digital Television (DTV) Laboratory of the University of Cuenca according to the open television broadcasting ISDB-Tb standard, adopted by Ecuador in 2010. The Laboratory arises as a research and testing environment for Digital Television DTV signal transmission and interactive applications. T...

RESUMEN Este artículo presenta el análisis de un Algoritmo de Inferencia Semántica utilizado en un Sistema de Recomendación de Contenidos Audiovisuales en el contexto de la Televisión Digital. Los resultados obtenidos muestran que la inclusión de diferentes propiedades semánticas y sus combinaciones, influye directamente en la reducción del error a...

Social networks offer the opportunity of communicating and sharing preferences with other users, reflecting in this way the interests, needs, values, and priorities among the members of the community. However, this information has rarely been considered in traditional recommender systems. This paper shows how Semantic Web technologies can be used t...

Currently, there is an increasing presence of researchers datasets (services) in the Internet. In this paper, we present an approach for extracting publications made by different authors and identifying common research areas among them. This work makes use of semantic technologies in order to describe authors and their publications through keywords...

This paper presents an evaluation procedure focused on analyzing the impact of the inclusion of determinedsemantic properties and their combinations, on the audiovisual content recommendation estimation performed by asemantic recommender system to users in the domain of Digital Television. This work is based on the assumption that byincreasing the...

The final goal of a recommender system is to satisfy the user’s information needs. In the case of digital TV, the recommender systems have proven to be an excellent alternative to address the information overload and facilitate the selection of the most interesting programs to watch. However, for this to occur it is required that these systems cons...

This paper proposes a novel strategy for semantifying DICOM medical images (RDF-ization) automatically. We define an architecture that involves processes for extracting, anonymizing, and serializing metadata comprised in DICOM medical images into RDF/XML. These processes allow for semantically enriching and sharing the metadata of DICOM medical fil...

Electronic Program Guides (EPGs) describe broadcast programming information provided by TV stations. However, users may obtain more information when these guides have been enriched. The main contribution of this work is to present an automation process for EPG's information enrichment through the use of semantic technologies and external resources....

The decision-making process in academic libraries is paramount; however highly complicated due to the large number of data sources, processes and high volumes of data to be analyzed. Academic libraries are accustomed to producing and gathering a vast amount of statistics about their collection and services. Typical data sources include integrated l...

The management of hydrological resources is a broad and complex subject. However, in order to perform an appropriate management of these resources, the geographic information is increasingly becoming a key element for decision-making in the management of Ecuadorian hydrological resources. This paper presents an integration approach between geospati...

RESUMEN El volumen de datos en bibliotecas ha aumentado enormemente en los últimos años, así como también la complejidad de sus fuentes y formatos de información, dificultando su gestión y acceso, especialmente como apoyo en la toma de decisiones. Sabiendo que una buena gestión de bibliotecas involucra la integración de indicadores estratégicos, la...

La televisión digital trae consigo un acceso más amplio a ultiples canales y servicios interactivos. Este aumento de programación televisiva obliga al usuario a involucrarse en tareas de recuperación de información cada vez que desee observar un programa de televisión. Este trabajo presenta una propuesta de un sistema de recomendación personalizada...

La televisión digital trae consigo un acceso más amplio a ultiples canales y servicios interactivos. Este aumento de programación televisiva obliga al usuario a involucrarse en tareas de recuperación de información cada vez que desee observar un programa de televisión. Este trabajo presenta una propuesta de un sistema de recomendación personalizada...

RESTful services are increasingly gaining traction over Web Services (WS-*). As with WS-* services, their semantic annotation can provide benefits in tasks related to their discovery, composition, and mediation. In this chapter, the authors present an approach to automate the semantic annotation of geospatial RESTful services using a cross-domain o...

There is an increasing presence of geospatial datasets in the Linked Open Data cloud. However, these datasets are published like data silos and the value of the Web of Data depends, among other properties, on the amount and quality of links between data sources. One of the most overlooked problems to date in the linking process is to ensure that tw...

In this paper the authors present an approach for the semantic annotation of RESTful services in the geospatial domain. Their approach automates some stages of the annotation process, by using a combination of resources and services: a cross-domain knowledge base like DBpedia, two domain ontologies like GeoNames and the WGS84 vocabulary, and sugges...

RESTful services are increasingly gaining traction over Web Services (WS-*). As with WS-* services, their semantic annotation can provide benefits in tasks related to their discovery, composition, and mediation. In this chapter, the authors present an approach to automate the semantic annotation of geospatial RESTful services using a cross-domain o...

RESTful services are increasingly gaining traction over WS-* ones. As with WS-* services, their semantic annotation can provide benefits in tasks related to their discovery, composition and mediation. In this paper we present an approach to automate the semantic annotation of RESTful services using a cross-domain ontology like DBpedia, domain ontol...

In this paper we present the process that has been followed for the development of an application that makes use of several heterogeneous Spanish public datasets that are related to three themes of INSPIRE Directive, specifically Administrative Units, Hydrography, and Statistical Units. Our application aims at analysing existing relations between t...

We present the process that has been followed for the development of an application that makes use of several heterogeneous Spanish public datasets that are related to administrative, hydrographic, and statistical domains. Our application aims at analysing existing relations between the Spanish coastal area and different statistical variables such...

Since the advent of Web 2.0, RESTful services have become an increasing phenomenon. Currently, Semantic Web technologies are being integrated into Web 2.0 services for both to leverage each other strengths. The need to take advantage of data available in RESTful services in the scope of Semantic Web evidences the difficulties to cope with syntactic...

Resumen Los servicios WFS permiten recuperar información geográfica de features. La anotación semántica de estos servicios proporciona beneficios en tareas relacionadas con el descubrimiento, composición y mediación de servicios. La principal contribución de este trabajo consiste en proponer un proceso para la automatización de la anotación semánti...