2,697 research outputs found
Topic modeling for entity linking using keyphrase
This paper proposes an Entity Linking system that applies a topic modeling ranking. We apply a novel approach in order to provide new relevant elements to the model. These elements are keyphrases related to the queries and gathered from a huge Wikipedia-based knowledge resourcePeer ReviewedPostprint (author’s final draft
Automatic Performance Status Evaluation and Physical Activity Recognition in Cancer Patients for Medical Diagnosis Assistance
Sobresaliente (10)The evaluation of cancer patients’ recovery is still under a big grade of subjectivity from the physicians’ diagnoses. Different systems have been successfully implemented for general physical activity evaluation, nonetheless there is still a big leap of improvement into Performance Status (PS) evaluation with ECOG and Karnofsky’s Performance Status (KPS) scores. In this
project an automatic system for patients’ biomonitoring based on Android technology with smartphones and wearables has been designed. As a result, objective data is provided for the oncologists’ diagnoses along with new algorithms for physical activity and PS assessment, having the latter applied to ECOG and KPS no precedent known. Furthermore, the basics for prospective implementation of gamification has been designed for boosting patients’ motivation in their recovery.La evaluación de la recuperación de pacientes con cáncer está caracterizada por un alto grado de subjetividad en los diagnósticos del personal médico. Se han implementado con éxito diferentes sistemas para la evaluación de la actividad fı́sica, sin embargo, aún existe un amplio margen de evolución dentro de la medida de la capacidad funcional con las escalas ECOG y de Karnofsky. En este proyecto se ha diseñado un sistema automático para la biomonitorización de pacientes basado en tecnologı́a Android con smartphones y wearables. Con esto se provee a los oncólogos de datos objetivos para sus diagnósticos junto con nuevos algoritmos para la evaluación de la actividad fı́sica y la capacidad funcional, estos últimos aplicados a ECOG y la escala de Karnofsky sin precedente alguno. Además, se han sentado las bases y el diseño de una futura implementación de gamificación para favorecer la motivación del paciente en su recuperación.Beca Iniciación a la Investigación de la Universidad de GranadaDepartamento de Arquitectura y Tecnología de Computadores, Universidad de Granad
FilteredWeb: A Framework for the Automated Search-Based Discovery of Blocked URLs
Various methods have been proposed for creating and maintaining lists of
potentially filtered URLs to allow for measurement of ongoing internet
censorship around the world. Whilst testing a known resource for evidence of
filtering can be relatively simple, given appropriate vantage points,
discovering previously unknown filtered web resources remains an open
challenge.
We present a new framework for automating the process of discovering filtered
resources through the use of adaptive queries to well-known search engines. Our
system applies information retrieval algorithms to isolate characteristic
linguistic patterns in known filtered web pages; these are then used as the
basis for web search queries. The results of these queries are then checked for
evidence of filtering, and newly discovered filtered resources are fed back
into the system to detect further filtered content.
Our implementation of this framework, applied to China as a case study, shows
that this approach is demonstrably effective at detecting significant numbers
of previously unknown filtered web pages, making a significant contribution to
the ongoing detection of internet filtering as it develops.
Our tool is currently deployed and has been used to discover 1355 domains
that are poisoned within China as of Feb 2017 - 30 times more than are
contained in the most widely-used public filter list. Of these, 759 are outside
of the Alexa Top 1000 domains list, demonstrating the capability of this
framework to find more obscure filtered content. Further, our initial analysis
of filtered URLs, and the search terms that were used to discover them, gives
further insight into the nature of the content currently being blocked in
China.Comment: To appear in "Network Traffic Measurement and Analysis Conference
2017" (TMA2017
Utilising semantic technologies for intelligent indexing and retrieval of digital images
The proliferation of digital media has led to a huge interest in classifying and indexing media objects for generic search and usage. In particular, we are witnessing colossal growth in digital image repositories that are difficult to navigate using free-text search mechanisms, which often return inaccurate matches as they in principle rely on statistical analysis of query keyword recurrence in the image annotation or surrounding text. In this paper we present a semantically-enabled image annotation and retrieval engine that is designed to satisfy the requirements of the commercial image collections market in terms of both accuracy and efficiency of the retrieval process. Our search engine relies on methodically structured ontologies for image annotation, thus allowing for more intelligent reasoning about the image content and subsequently obtaining a more accurate set of results and a richer set of alternatives matchmaking the original query. We also show how our well-analysed and designed domain ontology contributes to the implicit expansion of user queries as well as the exploitation of lexical databases for explicit semantic-based query expansion
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