F. Javier Ortega
University of Seville
28 Papers
113 Citations
F. Javier Ortega is an academic researcher from University of Seville. The author has contributed to research in topics: Computer science & Sentiment analysis. The author has an hindex of 10, co-authored 28 publications.
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Papers
'Long autonomy or long delay?' The importance of domain in opinion mining
TL;DR: This work tackles the task of opinion extraction in a domain-oriented approach, defining a set of domain-specific resources which capture valuable knowledge about how people express opinions on a given domain and automatically induced from an set of annotated documents.
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A knowledge-rich approach to feature-based opinion extraction from product reviews
Fermín L. Cruz,José A. Troyano,Fernando Enríquez,F. Javier Ortega,Carlos G. Vallejo +4 more
- 30 Oct 2010
TL;DR: This work proposes a redefinition of the feature-based opinion extraction problem from a more practical point of view, and describes a domain-specific, resource- based opinion extraction system, and suggests that domain- specific knowledge is a valuable resource in order to build precise opinion extraction systems.
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Sphere: Simulator of edge infrastructures for the optimization of performance and resources energy consumption
Damián Fernández-Cerero,Alejandro Fernández-Montes,F. Javier Ortega,Agnieszka Jakóbik,Adrian Widlak +4 more
TL;DR: Sphere, a simulation tool that enables researchers to establish various scenarios, is presented, confirming that it is a performant and reliable tool for the analysis of orchestration, graph-resolving, energy-efficiency, resource-managing and scheduling strategies in Edge-computing environments.
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Sentiment Analysis in Social Streams
Hassan Saif,F. Javier Ortega,Miriam Fernandez,Iván Cantador +3 more
- 14 Jul 2016
TL;DR: It is shown that social streams may use vocabularies and expressions that exist outside the mainstream of standard, formal languages, and may reflect complex dynamics in the opinions and sentiments expressed by individuals and communities.
Spam detection with a content-based random-walk algorithm
F. Javier Ortega,Craig Macdonald,José A. Troyano,Fermín L. Cruz +3 more
- 30 Oct 2010
TL;DR: This work introduces the novelty of taking into account the content of the web pages to characterize the web graph and to obtain an a-priori estimation of the spam likekihood of theweb pages.
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