Filters








14,736 Hits in 6.5 sec

Evaluation of an Ontology-based Knowledge-Management-System. A Case Study of Convera RetrievalWare 8.0

Oliver Bayer, Stefanie Höhfeld, Frauke Josbächer, Nico Kimm, Ina Kradepohl, Melanie Kwiatkowski, Cornelius Puschmann, Mathias Sabbagh, Nils Werner, Ulrike Vollmer
2006 Information Services and Use  
This study presents an evaluation of the functions and components of the system.  ...  Regarding comparable products one innovation is to be stressed particularly: the possibility of the preparation as well as integration of an ontology.  ...  If synsets are linked to other synsets they form a mesh of interrelated concepts called a semantic network. Wordnet [8] is an example for such a semantic network.  ... 
doi:10.3233/isu-2005-253-405 fatcat:ragzsy7kyfafjhcwgxbpbxzloy

Dataset search: a survey

Adriane Chapman, Elena Simperl, Laura Koesten, George Konstantinidis, Luis-Daniel Ibáñez, Emilia Kacprzak, Paul Groth
2019 The VLDB journal  
Google recently beta-released a search service for datasets, which allows users to discover data stored in various online repositories via keyword queries.  ...  In order to support these uses, we must be able to search for datasets. Searching for data in principled ways has been researched for decades [42] .  ...  Acknowledgements The following projects supported this work: They-BuyForYou (EU H2020: 780247); Data Stories (EPRSC: EP/P025676/1); QROWD (EU:H2020 732194); A Multidisciplinary Study of Predictive Artificial  ... 
doi:10.1007/s00778-019-00564-x fatcat:tmjhtnkzsfedzhqxeyxifoteli

Arabic linked drug dataset consolidating and publishing

Guma Lakshen, Valentina Janev, Sanja Vranes
2020 Computer Science and Information Systems  
Through representation of the data in an open machine-readable format, the approach provides an optimum solution for information and dissemination of data and for building specialized applications.  ...  The paper examines the process of creating and publishing an Arabic Linked Drug Dataset based on open drug datasets from selected Arabic countries and discusses quality issues considered in the linked  ...  Taking the drug industry and drug management as an example, this study was motivated by the following research questions (related to operations in the depicted semantic layer, see red rectangular in Fig  ... 
doi:10.2298/csis200510047l fatcat:x73c4uul75a7lckx4lvegyyagu

Dataset search: a survey [article]

Adriane Chapman and Elena Simperl and Laura Koesten and George Konstantinidis and Luis-Daniel Ibáñez-Gonzalez and Emilia Kacprzak and Paul Groth
2019 arXiv   pre-print
Google recently beta released a search service for datasets, which allows users to discover data stored in various online repositories via keyword queries.  ...  These developments foreshadow an emerging research field around dataset search or retrieval that broadly encompasses frameworks, methods and tools that help match a user data need against a collection  ...  Instead, specific query interfaces are created for the underlying data type, e.g. [70] provides a SQL interface over text data and [104] for temporal and spatial data.  ... 
arXiv:1901.00735v1 fatcat:lvz3zfkpejfqdmdxmi2lswn45y

GenoSurf: metadata driven semantic search system for integrated genomic datasets

2019 Database: The Journal of Biological Databases and Curation  
targeting the genomic datasets at their original sources (identified with their accession IDs and URLs), or as part of an integrated query answering system for performing complex queries over genomic  ...  Many valuable resources developed by world-wide research institutions and consortia describe genomic datasets that are both open and available for secondary research, but their metadata search interfaces  ...  Acknowledgement We wish to thank all collaborators who participated to our evaluation survey and thus allowed us to assess and improve the system. Conflict of interest. None declared.  ... 
doi:10.1093/database/baz132 pmid:31820804 pmcid:PMC6902006 fatcat:gf4llmuty5ev5fdydmbra45tti

The AGROVOC Linked Dataset

Caterina Caracciolo, Armando Stellato, Ahsan Morshed, Gudrun Johannsen, Sachit Rajbhandari, Yves Jaques, Johannes Keizer
2013 Semantic Web Journal  
Born in the early 1980's as a multilingual agricultural thesaurus, AGROVOC has steadily evolved over the last fifteen years, moving to an electronic version around the year 2000, and embracing the Semantic  ...  In this paper we provide a brief historical summary of AGROVOC and detail its specification as a Linked Dataset.  ...  Such a VoID file contains statistical information about the linked dataset, as well as coordinates for automatically accessing and properly querying it.  ... 
doi:10.3233/sw-130106 fatcat:27hgo7xwencwrivw5bckzo4v7i

Sketch-based manga retrieval using manga109 dataset

Yusuke Matsui, Kota Ito, Yuji Aramaki, Azuma Fujimoto, Toru Ogawa, Toshihiko Yamasaki, Kiyoharu Aizawa
2016 Multimedia tools and applications  
We conducted a comparative study, a localization evaluation, and a large-scale qualitative study.  ...  For evaluation, we built a novel dataset of manga images, Manga109, which consists of 109 comic books of 21,142 pages drawn by professional manga artists.  ...  For querying, the framework provides a sketch-based interface. Based on the interface, two interactive reranking schemes are proposed for an intuitive search: relevance feedback and query retouch.  ... 
doi:10.1007/s11042-016-4020-z fatcat:jjd377iwvrdb3eagtiko7vhima

Querying Datasets on the Web with High Availability [chapter]

Ruben Verborgh, Olaf Hartig, Ben De Meester, Gerald Haesendonck, Laurens De Vocht, Miel Vander Sande, Richard Cyganiak, Pieter Colpaert, Erik Mannens, Rik Van de Walle
2014 Lecture Notes in Computer Science  
As the Web of Data is growing at an ever increasing speed, the lack of reliable query solutions for live public data becomes apparent. sparql implementations have matured and deliver impressive performance  ...  The results indicate that, at the cost of lower performance, query techniques with triple pattern fragments lead to high availability, thereby allowing for reliable applications on top of public, queryable  ...  Finally, we define a query semantics for evaluating sparql queries over a dataset that is published as a collection of ldfs. Definition 7 (query semantics).  ... 
doi:10.1007/978-3-319-11964-9_12 fatcat:caay65eqyrddjo763yj2enwwr4

Interactive Exploration of Implicit and Explicit Relations in Faceted Datasets

Jian Zhao, Christopher Collins, Fanny Chevalier, Ravin Balakrishnan
2013 IEEE Transactions on Visualization and Computer Graphics  
Fanny and Chris were the two closest collaborators during my graduate study. They were my invaluable sources for advices on the information visualization side for most of my work.  ...  Industrial internship experience was an essential part of my doctoral study, during which I met many brightest people and had enjoyable time.  ...  ACKNOWLEDGEMENTS Over the last six years, my doctoral study has been an invaluable experience in my life. It has been a challenging adventure, and I was fortune to receive support from many people.  ... 
doi:10.1109/tvcg.2013.167 pmid:24051774 fatcat:43xwwk6lezbqzk2bf65ivvkp5u

Algebraic Manipulation of Scientific Datasets [chapter]

Bill Howe, David Maier
2004 Proceedings 2004 VLDB Conference  
Existing approaches for manipulating these datasets are incomplete: The performance of SQL queries for manipulating large numeric datasets is not competitive with specialized tools.  ...  In this paper, we present an algebra of gridfields for manipulating both regular and irregular gridded datasets, algebraic optimization techniques, and an implementation backed by experimental results.  ...  Physical recipes are currently constructed by hand, though we are designing a declarative query language as an interface to the physical operators.  ... 
doi:10.1016/b978-012088469-8.50081-4 dblp:conf/vldb/HoweM04 fatcat:tuozsbs7mfd3dlomusfbimht5q

Algebraic Manipulation of Scientific Datasets [chapter]

B HOWE, D MAIER
2004 Proceedings 2004 VLDB Conference  
Existing approaches for manipulating these datasets are incomplete: The performance of SQL queries for manipulating large numeric datasets is not competitive with specialized tools.  ...  In this paper, we present an algebra of gridfields for manipulating both regular and irregular gridded datasets, algebraic optimization techniques, and an implementation backed by experimental results.  ...  Physical recipes are currently constructed by hand, though we are designing a declarative query language as an interface to the physical operators.  ... 
doi:10.1016/b978-012088469-8/50081-4 fatcat:mja23zxxfnb4hiktaoofctzf4q

Algebraic manipulation of scientific datasets

Bill Howe, David Maier
2005 The VLDB journal  
Existing approaches for manipulating these datasets are incomplete: The performance of SQL queries for manipulating large numeric datasets is not competitive with specialized tools.  ...  In this paper, we present an algebra of gridfields for manipulating both regular and irregular gridded datasets, algebraic optimization techniques, and an implementation backed by experimental results.  ...  Physical recipes are currently constructed by hand, though we are designing a declarative query language as an interface to the physical operators.  ... 
doi:10.1007/s00778-005-0157-5 fatcat:3pecdepnpreepfv2whzkaliq6q

MFC Datasets: Large-Scale Benchmark Datasets for Media Forensic Challenge Evaluation

Haiying Guan, Mark Kozak, Eric Robertson, Yooyoung Lee, Amy N. Yates, Andrew Delgado, Daniel Zhou, Timothee Kheyrkhah, Jeff Smith, Jonathan Fiscus
2019 2019 IEEE Winter Applications of Computer Vision Workshops (WACVW)  
Given a specified query, we build an infrastructure that selects the customized evaluation subsets for the targeted analysis report.  ...  We provide a benchmark for digital Media Forensics Challenge (MFC) evaluations.  ...  for their technical supports to PAR government; University of Colorado Denver for their professional media manipulations, antiforensic tools, social media laundering tools; the RankOne MediFor team for  ... 
doi:10.1109/wacvw.2019.00018 fatcat:uaao7giua5cs7ivuld5le4x6x4

BiobankUniverse: automatic matchmaking between datasets for biobank data discovery and integration

Chao Pang, Fleur Kelpin, David van Enckevort, Niina Eklund, Kaisa Silander, Dennis Hendriksen, Mark de Haan, Jonathan Jetten, Tommy de Boer, Bart Charbon, Petr Holub, Hans Hillege (+2 others)
2017 Bioinformatics  
It integrates lexical comparison, Unified Medical Language System ontology tagging and semantic query expansion.  ...  Motivation: Biobanks are indispensable for large-scale genetic/epidemiological studies, yet it remains difficult for researchers to determine which biobanks contain data matching their research questions  ...  Acknowledgements We thank the communities of MOLGENIS, CORBEL, BBMRI-NL, BBMRI-ERIC, ELIXIR and RD-connect for assistance in the software development; THL  ... 
doi:10.1093/bioinformatics/btx478 pmid:29036577 pmcid:PMC5870622 fatcat:qjitalbrqfaw5kzd7xg3id7qfm

An Evaluation of Knowledge Base Systems for Large OWL Datasets [chapter]

Yuanbo Guo, Zhengxiang Pan, Jeff Heflin
2004 Lecture Notes in Computer Science  
We describe the components of the benchmark and some rationale for its design. Based on the benchmark, we have conducted an evaluation of four knowledge base systems (KBS).  ...  The benchmark is intended to evaluate knowledge base systems with respect to extensional queries over a large dataset that commits to a single realistic ontology.  ...  By making use of the benchmark, we have performed an evaluation of four KBSs for the Semantic Web from several different aspects.  ... 
doi:10.1007/978-3-540-30475-3_20 fatcat:7dj2s2blxjes5ewipjwy5dqc4m
« Previous Showing results 1 — 15 out of 14,736 results