Filters








17,720 Hits in 4.6 sec

Knowledge base population and visualization using an ontology based on semantic roles

Maryam Siahbani, Ravikiran Vadlapudi, Max Whitney, Anoop Sarkar
2013 Proceedings of the 2013 workshop on Automated knowledge base construction - AKBC '13  
To this end, we tightly couple our knowledge base and ontology to an information visualization system that can be used to explore and navigate events extracted from a large natural language text collection  ...  We exploit semantic role labels in order to create a novel predicate-centric ontology for entities in our knowledge base. This allows users to find uncommon facts easily.  ...  Semantic Roles and Predicate-centered Ontology To extract predicate-argument structures, we use an SRL approach based on large-scale statistical machine learning [6, 8] based on a semantic role data  ... 
doi:10.1145/2509558.2509573 dblp:conf/cikm/SiahbaniVWS13 fatcat:lk2vrr4pdjd7tfntzxy6mz3m3m

A Semantic Portal for the International Affairs Sector [chapter]

J. Contreras, V. R Benjamins, M Blázquez, S Losada, R Salla, J Sevilla, D. Navarro, J. Casillas, A. Mompó, D. Patón, O. Corcho, P. Tena (+1 others)
2004 Lecture Notes in Computer Science  
The approach comprises an automatic ontology-based annotator, a semantic search engine with a natural language interface, a web publication tool allowing semantic navigation, and a 3D visualization component  ...  We describe an approach, tools and techniques that allow building a semantic portal, where access is based on the meaning of concepts and relations of the International Affairs domain.  ...  with a semantic annotation based on ontologies.  ... 
doi:10.1007/978-3-540-30202-5_14 fatcat:q7gitr6btvf7ngwjwjyngh6bpe

D3.1 First version of ontologies and semantic repository

Georgios Meditskos (CERTH), Zoe Vasileiou (CERTH),Panagiotis Mhtzias (CERTH), Anastasios Karakostas (CERTH), Stefanos Vrochidis (CERTH), Jesús Gorroñogoitia (ATOS
2020 Zenodo  
In addition,it describes the first version of the Semantic Reasoner module that populates the SODALITE Knowledge Base (KB) with the resource models and Abstract Application Deployment Models (AADMs) composed  ...  The present deliverable reports on the work carried out within T3.1 "Application Semantic Modelling" and T3.2 "Infrastructure Semantic Modelling", relevant to the development of the SODALITE ontologies  ...  One such motivation is that a model often needs to play more than one role in an application: A particular concept should be viewed as a class in one role but as an instance in another role.  ... 
doi:10.5281/zenodo.4280700 fatcat:4u7gtlwe5bhrzftb5ksaf4pko4

Educing knowledge from text: semantic information extraction of spatial concepts and places

Evangelos Papadias, Margarita Kokla, Eleni Tomai
2021 AGILE: GIScience Series  
The paper presents a web-based prototype for the extraction of geospatial entities and concepts, and the subsequent semantic visualization and interactive exploration of the extraction results.  ...  Natural language texts provide a wealth of knowledge about geospatial concepts, places, events, and activities that needs to be extracted and formalized to support semantic annotation, knowledge-based  ...  It is used for information organization, semantic search, and ontology development and population.  ... 
doi:10.5194/agile-giss-2-38-2021 fatcat:p3cp5pzu4nar5akd27ztj7et54

Camus: Automatically mapping Cyber Assets to Missions and Users

John R. Goodall, Anita D'Amico, Jason K. Kopylec
2009 MILCOM 2009 - 2009 IEEE Military Communications Conference  
Methods for fusing data from multiple data sources have been developed alongside an ontology-based system to populate the model using existing network data sources.  ...  Also discussed are the technical architecture and challenges to such an approach.  ...  ACKNOWLEDGEMENTS This research and development effort is supported by OSD and AFRL through a Small Business Innovative Research grant, under contract no. FA8750-08-C-0166.  ... 
doi:10.1109/milcom.2009.5380096 fatcat:dsro4m7r7bforefyndeokfpkdm

Semantics Visualization – Definition, Approaches and Challenges

Kawa Nazemi, Dirk Burkhardt, Egils Ginters, Jorn Kohlhammer
2015 Procedia Computer Science  
The article concludes with future challenges in semantics visualization focusing on users, data and tasks.  ...  Semantic technologies provide new ways for accessing data and acquiring knowledge.  ...  Relational visualizations play an essential role in visualizing semantics.  ... 
doi:10.1016/j.procs.2015.12.216 fatcat:hwe34grgofc7xafu54neq7wz2m

SEMPL

M. S. Perry, E. Stiles
2004 Alternate track papers & posters of the 13th international conference on World Wide Web - WWW Alt. '04  
By using the ontology based information integration technique, SEMPL can specify the context of a particular piece of research information, annotate web pages, and provide links to semantically related  ...  SEMPL, which is powered by a state of the art commercial system, Semagix Freedom [7], uses an ontologydriven approach to provide semantic browsing, linking, and contextual querying of content within the  ...  The ontology schema and instance data each have a clearly defined role. We use the schema to define a complex semantic relationship.  ... 
doi:10.1145/1010432.1010574 fatcat:4kzgly6rxnhntexq6af4e4vjfq

SEMPL

M. S. Perry, E. Stiles
2004 Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters - WWW Alt. '04  
By using the ontology based information integration technique, SEMPL can specify the context of a particular piece of research information, annotate web pages, and provide links to semantically related  ...  SEMPL, which is powered by a state of the art commercial system, Semagix Freedom [7], uses an ontologydriven approach to provide semantic browsing, linking, and contextual querying of content within the  ...  The ontology schema and instance data each have a clearly defined role. We use the schema to define a complex semantic relationship.  ... 
doi:10.1145/1013367.1013509 dblp:conf/www/PerryS04 fatcat:e4drr4pwf5b4zf4ttv5qllwonm

Selected articles from the Third International Workshop on Semantics-Powered Data Analytics (SEPDA 2018)

Zhe He, Jiang Bian, Cui Tao, Rui Zhang
2019 BMC Medical Informatics and Decision Making  
, Text Mining, and Ontology Evaluation.  ...  on Bioinformatics and Biomedicine (BIBM 2018) in Madrid, Spain, and then briefly introduce five research articles included in this supplement issue, covering topics including Data Analytics, Data Visualization  ...  Acknowledgments The Guest Editors of this supplement would like to thank the authors and the reviewers for their scientific contribution and congratulate them on their high quality work.  ... 
doi:10.1186/s12911-019-0855-3 pmid:31391050 pmcid:PMC6686213 fatcat:jnw2rysftvcixl7bmwnmwftkzi

Geospatial Ontology Development and Semantic Analytics

I Budak Arpinar, Amit Sheth, Cartic Ramakrishnan, E Lynn Usery, Molly Azami, Mei-Po Kwan
2006 Transactions on GIS  
data) and semantically heterogeneous and multimodal data from diverse sources, and (b) analytical processing that exploits these ontologies and associated knowledge bases, with integral support for what  ...  This also involves specification of spatiotemporal thematic ontologies and populating such ontologies with high quality knowledge.  ...  Background & Related Work Semantic (Thematic) Analytics Compared to earlier keyword-based and information retrieval techniques that rely on syntax, there is an increasing role of semantic approaches  ... 
doi:10.1111/j.1467-9671.2006.01012.x fatcat:5efx4fl3vrbdrkoefpl62sbspi

Document annotation and ontology population from linguistic extractions

Florence Amardeilh, Philippe Laublet, Jean-Luc Minel
2005 Proceedings of the 3rd international conference on Knowledge capture - K-CAP '05  
The rules instantiate these concepts, attributes and relations in the knowledge base constrained by the domain ontology.  ...  In this paper, we present a workbench for semi-automatic ontology population from textual documents.  ...  role in the knowledge base.  ... 
doi:10.1145/1088622.1088651 dblp:conf/kcap/AmardeilhLM05 fatcat:jvbgumndwvei5gulihlloe6m2m

Improving Access to Software Architecture Knowledge: An Ontology-based Search Approach

Adriana Maria Figueiredo, Julio C. dos Reis, Marcos A. Rodrigues
2013 International Journal of Multimedia and Image Processing  
An ontology-based semantic search mechanism is used in the framework to retrieve not only architecture properties, but also the rationale behind decisions taken during the construction of the software.  ...  The ontologies defined are also used in the visualization of the search results, providing an interactive environment for users to explore, discover, and analyze the information.  ...  Ontology-based Semantic Search A search mechanism with semantic features needs to interpret a knowledge model about a domain and an ontology is an approach to represent this knowledge [16, 9, 3 and 17  ... 
doi:10.20533/ijmip.2042.4647.2013.0018 fatcat:b5pkkcyvjfft5kta4fzdwd2lay

Managing Ontology Lifecycles in Corporate Settings [chapter]

Markus Luczak-Rösch, Ralf Heese
2009 Studies in Computational Intelligence  
Weaving the Semantic Web the research community is working on publishing publicly available data sources as RDF data on the Web.  ...  We propose an innovative ontology lifecycle, examine existing tools towards the functional requirements of the lifecycle phases and propose a versioning approach supporting them integratively.  ...  Acknowledgement This work has been partially supported by the "InnoProfile-Corporate Semantic Web" project funded by the German Federal Ministry of Education and Research (BMBF).  ... 
doi:10.1007/978-3-642-02184-8_16 fatcat:g5yrupuae5azph25zu5kybgngq

Knowledge-Assisted Image Analysis Based on Context and Spatial Optimization

G. Th. Papadopoulos, Ph. Mylonas, V. Mezaris, Y. Avrithis, I. Kompatsiaris
2006 International Journal on Semantic Web and Information Systems (IJSWIS)  
Under the proposed approach, ontologies are used to capture general, spatial, and contextual knowledge of a domain, and a genetic algorithm is applied to realize the final annotation.  ...  In this article, an approach to semantic image analysis is presented.  ...  ACKNOWLEDGMENT The work presented in this article was partially supported by the European Commission under contract FP6-001765 aceMedia, FP6-027026 K-Space and FP6-507482 Knowledge-Web. (Vol. 2,.  ... 
doi:10.4018/jswis.2006070102 fatcat:h6v3y5l2hzcezgyrnqteocobd4

Towards pharmacogenomics knowledge discovery with the semantic web

M. Dumontier, N. Villanueva-Rosales
2009 Briefings in Bioinformatics  
question answering using automated reasoning over expressive ontologies.  ...  However, recent advances in semantic web technologies have presented exciting new opportunities for pharmacogenomics knowledge discovery by representing the information with machine understandable semantics  ...  With a populated ontology in hand, new approaches to mine the knowledge base found on the semantic web will uncover new patterns in the information, which in turn can be captured as expressive ontologies  ... 
doi:10.1093/bib/bbn056 pmid:19240125 fatcat:p53mx2t3gbeupmz625c6jyykui
« Previous Showing results 1 — 15 out of 17,720 results