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Discovering Links for Metadata Enrichment on Computer Science Papers

Schaible, Johann; Mayr, Philipp
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 15/12/2012 Português
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At the very beginning of compiling a bibliography, usually only basic information, such as title, authors and publication date of an item are known. In order to gather additional information about a specific item, one typically has to search the library catalog or use a web search engine. This look-up procedure implies a manual effort for every single item of a bibliography. In this technical report we present a proof of concept which utilizes Linked Data technology for the simple enrichment of sparse metadata sets. This is done by discovering owl:sameAs links be- tween an initial set of computer science papers and resources from external data sources like DBLP, ACM and the Semantic Web Conference Corpus. In this report, we demonstrate how the link discovery tool Silk is used to detect additional information and to enrich an initial set of records in the computer science domain. The pros and cons of silk as link discovery tool are summarized in the end.; Comment: 22 pages, 4 figures, 7 listings, presented at SWIB12

Erasure-Coded Byzantine Storage with Separate Metadata

Androulaki, Elli; Cachin, Christian; Dobre, Dan; Vukolic, Marko
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 20/02/2014 Português
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Although many distributed storage protocols have been introduced, a solution that combines the strongest properties in terms of availability, consistency, fault-tolerance, storage complexity and the supported level of concurrency, has been elusive for a long time. Combining these properties is difficult, especially if the resulting solution is required to be efficient and incur low cost. We present AWE, the first erasure-coded distributed implementation of a multi-writer multi-reader read/write storage object that is, at the same time: (1) asynchronous, (2) wait-free, (3) atomic, (4) amnesic, (i.e., with data nodes storing a bounded number of values) and (5) Byzantine fault-tolerant (BFT) using the optimal number of nodes. Furthermore, AWE is efficient since it does not use public-key cryptography and requires data nodes that support only reads and writes, further reducing the cost of deployment and ownership of a distributed storage solution. Notably, AWE stores metadata separately from $k$-out-of-$n$ erasure-coded fragments. This enables AWE to be the first BFT protocol that uses as few as $2t+k$ data nodes to tolerate $t$ Byzantine nodes, for any $k \ge 1$.

Metadata aggregation and "automated digital libraries": A retrospective on the NSDL experience

Lagoze, Carl; Krafft, Dean; Cornwell, Tim; Dushay, Naomi; Eckstrom, Dean; Saylor, John
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 30/01/2006 Português
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Over three years ago, the Core Integration team of the National Science Digital Library (NSDL) implemented a digital library based on metadata aggregation using Dublin Core and OAI-PMH. The initial expectation was that such low-barrier technologies would be relatively easy to automate and administer. While this architectural choice permitted rapid deployment of a production NSDL, our three years of experience have contradicted our original expectations of easy automation and low people cost. We have learned that alleged "low-barrier" standards are often harder to deploy than expected. In this paper we report on this experience and comment on the general cost, the functionality, and the ultimate effectiveness of this architecture.; Comment: Submission to JCDL 2006

IVOA Recommendation: Space-Time Coordinate Metadata for the Virtual Observatory Version 1.33

Rots, A. H.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 03/10/2011 Português
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This document provides a complete design description of the Space-Time Coordinate (STC) metadata for the Virtual Observatory. It explains the various components, highlights some implementation considerations, presents a complete set of UML diagrams, and discusses the relation between STC and certain other parts of the Data Model. Two serializations are discussed: XML Schema (STC-X) and String (STC-S); the former is an integral part of this Recommendation.

Integrating Structured Metadata with Relational Affinity Propagation

Plangprasopchok, Anon; Lerman, Kristina; Getoor, Lise
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 26/05/2010 Português
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Structured and semi-structured data describing entities, taxonomies and ontologies appears in many domains. There is a huge interest in integrating structured information from multiple sources; however integrating structured data to infer complex common structures is a difficult task because the integration must aggregate similar structures while avoiding structural inconsistencies that may appear when the data is combined. In this work, we study the integration of structured social metadata: shallow personal hierarchies specified by many individual users on the SocialWeb, and focus on inferring a collection of integrated, consistent taxonomies. We frame this task as an optimization problem with structural constraints. We propose a new inference algorithm, which we refer to as Relational Affinity Propagation (RAP) that extends affinity propagation (Frey and Dueck 2007) by introducing structural constraints. We validate the approach on a real-world social media dataset, collected from the photosharing website Flickr. Our empirical results show that our proposed approach is able to construct deeper and denser structures compared to an approach using only the standard affinity propagation algorithm.; Comment: 6 Pages, To appear at AAAI Workshop on Statistical Relational AI

Metadata Embeddings for User and Item Cold-start Recommendations

Kula, Maciej
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 30/07/2015 Português
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I present a hybrid matrix factorisation model representing users and items as linear combinations of their content features' latent factors. The model outperforms both collaborative and content-based models in cold-start or sparse interaction data scenarios (using both user and item metadata), and performs at least as well as a pure collaborative matrix factorisation model where interaction data is abundant. Additionally, feature embeddings produced by the model encode semantic information in a way reminiscent of word embedding approaches, making them useful for a range of related tasks such as tag recommendations.

Folks in Folksonomies: Social Link Prediction from Shared Metadata

Schifanella, Rossano; Barrat, Alain; Cattuto, Ciro; Markines, Benjamin; Menczer, Filippo
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 11/03/2010 Português
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Web 2.0 applications have attracted a considerable amount of attention because their open-ended nature allows users to create light-weight semantic scaffolding to organize and share content. To date, the interplay of the social and semantic components of social media has been only partially explored. Here we focus on Flickr and Last.fm, two social media systems in which we can relate the tagging activity of the users with an explicit representation of their social network. We show that a substantial level of local lexical and topical alignment is observable among users who lie close to each other in the social network. We introduce a null model that preserves user activity while removing local correlations, allowing us to disentangle the actual local alignment between users from statistical effects due to the assortative mixing of user activity and centrality in the social network. This analysis suggests that users with similar topical interests are more likely to be friends, and therefore semantic similarity measures among users based solely on their annotation metadata should be predictive of social links. We test this hypothesis on the Last.fm data set, confirming that the social network constructed from semantic similarity captures actual friendship more accurately than Last.fm's suggestions based on listening patterns.; Comment: http://portal.acm.org/citation.cfm?doid=1718487.1718521

QIS-XML: A metadata specification for Quantum Information Science

Heus, Pascal; Gomez, Richard
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 23/12/2007 Português
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While Quantum Information Science (QIS) is still in its infancy, the ability for quantum based hardware or computers to communicate and integrate with their classical counterparts will be a major requirement towards their success. Little attention however has been paid to this aspect of QIS. To manage and exchange information between systems, today's classic Information Technology (IT) commonly uses the eXtensible Markup Language (XML) and its related tools. XML is composed of numerous specifications related to various fields of expertise. No such global specification however has been defined for quantum computers. QIS-XML is a proposed XML metadata specification for the description of fundamental components of QIS (gates & circuits) and a platform for the development of a hardware independent low level pseudo-code for quantum algorithms. This paper lays out the general characteristics of the QIS-XML specification and outlines practical applications through prototype use cases.; Comment: 26 pages, 22 figures

Towards metadata standards for sharing simulation outputs

Polhill, Gary; Dawson, Terry; Parker, Dawn; Jin, Xiongbing; Robinson, Kirsten; Filatova, Tatiana; Voinov, Alexey; Barton, Michael; Pignotti, Edoardo; Edwards, Peter
Fonte: Universidade Autônoma de Barcelona Publicador: Universidade Autônoma de Barcelona
Tipo: Conferência ou Objeto de Conferência Formato: application/pdf
Publicado em //2014 Português
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This extended abstract outlines a prototype metadata standard for recording outputs of social simulations, to be refined as part of a project funded through the third round of the Digging into Data challenge. This is with a view to gathering community feedback on the proposals.

Conversion and metadata extraction frameworks

Droogmans, Lieven; Bosman, Ben
Fonte: Universidade de Cambridge Publicador: Universidade de Cambridge
Tipo: Outros
Português
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PrePARe teaching modules in digital preservation

PrePARe project team
Fonte: Cambridge University Library Publicador: Cambridge University Library
Tipo: Learning Object; not applicable
Português
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The JISC-funded PrePARe project aimed to encourage researchers to take an interest and responsibility in digital preservation of their research outputs. Training materials in digital preservation have been designed to slot into existing training courses on related areas, such as Information Literacy and reference management. Five short modules provide an introduction to why digital preservation matters, and cover the issues of safe storage of digital materials, documentation and metadata, data sharing and re-use and data management planning, to think about these issues early in the research process. The resources consist of a series of slides for each module, and a guide on how the resources can be used, including suggested discussion questions and script for use with the slides.; JISC http://www.jisc.ac.uk/

A workflow for digitalization projects

De Mulder, Tom
Fonte: Universidade de Cambridge Publicador: Universidade de Cambridge
Tipo: Trabalho em Andamento Formato: 12924 bytes; 84610 bytes; application/x-latex; application/pdf
Português
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More and more institutions want to convert their traditional content to digital formats. In such pro jects the digitalization and metadata stages often happen asynchronously. This paper identifies the importance of frequent cross-verification of both. We suggest a workflow to formalise this process, and a possible technical implementation to automate this workflow.

Sources of uncertainty in estimating suspended sediment load

Smith, Celina; Croke, Barry
Fonte: International Association of Hydrological Sciences Publicador: International Association of Hydrological Sciences
Tipo: Conference paper
Português
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An important task in the assessment of suspended sediment load estimates is to qualify and (where appropriate) quantify the uncertainty associated with that estimate. A sediment rating curve is a relationship between suspended sediment concentration and flow used in the calculation of a load estimate. However, this method assumes particular characteristics in the input data. It was found that historical data for the Murrumbidgee River catchment, Australia, did not possess all these assumed characteristics because of variations in suspended sediment sampling methods, a lack of metadata, and a lack of a sufficient number of samples covering the range of flow conditions. These factors inhibited the use of sediment rating curves for developing an appropriate suspended sediment load estimate and its associated uncertainty.

Standards and infrastructure for managing experimental metadata

Philippe Rocca-Serra; Marco Brandizi; Eamonn Maguire; Nataliya Sklyar; Chris Taylor; Manon Delahaye; Richard Evans; Susanna-Assunta Sansone
Fonte: Nature Preceedings Publicador: Nature Preceedings
Tipo: Poster
Português
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*See also the "related presentation":http://precedings.nature.com/documents/3145/version/1* We present an infrastructure that leverages synergistic reporting standards and ontologies^1,2,3,4,5^ to create a common structured representation and storage mechanism for experimental metadata from biological and biomedical investigations ranging from simple single-assay studies to complex, methodologically diverse multi-assay studies. The infrastructure’s components include: a data capture and editing tool (_ISAcreator_); validator (_ISAvalidator_); database (_BioInvestigation Index_); and converter (_ISAconverter_); and a BioConductor analysis package (_R-ISApackage_). The components are designed for local installation, and can work independently, or as unified system. View the "public instance":http://www.ebi.ac.uk/bioinvindex running at EBI and/or "download the components":http://isatab.sf.net for your local use. *References* 1. Taylor CF, Field D, Sansone SA,… Rocca-Serra P et al. (2008) The MIBBI Project. _Nature Biotechnology_ Aug;26(8):889-896. "http://www.mibbi.org":http://www.mibbi.org 2. Smith B...

Metadata in Research Information: Conclusions & Take-Home Messages

Simons, Eduard
Fonte: euroCRIS Publicador: euroCRIS
Tipo: Conferência ou Objeto de Conferência
Português
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6 slides.-- Presentation delivered at Session 9: "Conclusion"

CERIF-CRIS: A Research Information Model for Decision Support: Use and Trends for the Future

Jörg, Brigitte; Cutting-Decelle, Anne-Françoise; Houssos, Nikos; Sicilia, Miguel Angel; Jeffery, Keith G.
Fonte: CODATA Publicador: CODATA
Tipo: Conferência ou Objeto de Conferência
Português
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Presentation delivered at the CODATA International Conference "Open Data and Information for a Changing Planet" held in Taipei Oct 28-31, 2012.; Current Research Information Systems (CRISs) are dedicated to manage information about Research through CERIF. CERIF is a data model describing the Research involved entities and their manifold relationships in an efficient and scalable way. In addition to the ER-Model CERIF specifies an XML exchange format and develops a domain vocabulary – aimed at re-use and mappings, and towards increased openness. CRISs serve many stakeholders in their recording, reporting and decision-making alongside the entire research process ; whether they are developing programmes, allocating funding, assessing projects, executing projects, generating results, assessing results or transferring technology. A CRIS contains data and metadata or information about e.g. project managers, ongoing and completed projects, research departments, funding organisations, programmes and funding, researchers, research results (publications, patents, products), events, infrastructures (facilities, services, equipment) and their timely relationships (semantics), enabling an integrated approach for managing research information. CERIF – the Common European Research Information Format – is a European Commission Recommendation to Member States and its roots date back to the late 80ies...

Research Data Services Project at Radboud University

Van Dongen, Piet
Fonte: euroCRIS Publicador: euroCRIS
Tipo: Conferência ou Objeto de Conferência
Português
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21 slides.-- Presentation delivered at the session "The (possible) role of a CRIS for Research Data Management and Archiving"; This talk presents the rationale behind the new Research Data Management system being implemented at Radboud University in The Netherlands. This RDM system aims to collect data outputs from a number of institutional research departaments relying on the RU METIS CRIS for providing the contextual metadata and ensuring interoperability with different additional content management systems both at internal and external level.

State of the Art and Roadmap for Current Research Information Systems and Repositories: White Paper

Jeffery, Keith G.; Asserson, Anne; Luzi, Daniela
Fonte: euroCRIS; Italian National Research Council. Institute for Research on Population and Social Policies (CNR-IRPPS) Publicador: euroCRIS; Italian National Research Council. Institute for Research on Population and Social Policies (CNR-IRPPS)
Tipo: Trabalho em Andamento
Português
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White Paper produced as briefing paper for the 1st Workshop on CRIS, CERIF and Institutional Repositories held May 2010 by euroCRIS at the Italian National Research Council Central Building in Rome.-- 7 pages.; Various pressures bring CRIS and repositories together. In many countries evaluation of research is becoming important, to assure public funds are well-spent. Such requirements need to associate research output (including publications but also products, patents, dissemination at events) with persons, organizational units (university, faculty, department, cross-department centre, research group), projects (e.g. funded grants), facilities (e.g. large synchrotron radiation sources), equipment (particular experiment) for analysis. Repository systems usually do not collect this contextual information, being restricted to scholarly publication output with title, abstract, author and some other publication-related information, commonly based on DC (Dublin Core) metadata. On the other hand, some CRIS include within them the research outputs as objects (e.g. publications). Similarly, the context of a research output is important in evaluating its utility, quality and relevance to any repurposing. Context is usually recorded in a CRIS. CERIF provides an appropriate timestamped structure so that provenance information is also available.

Formalizing a CERIF Semantics to connect CRISs and IRs

Jörg, Brigitte
Fonte: euroCRIS Publicador: euroCRIS
Tipo: Conferência ou Objeto de Conferência
Português
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Talk delivered at the 1st Workshop on CRIS, CERIF and Institutional Repositories, Module 1: "The intersection of data models and metadata concerning IR and CRIS".-- 34 slides; The repository world has to manage research output information. During the workshop we want to discuss how the granularity of relevant CERIF entities and their representation in a CRIS environment transfers to the requirements within and the coverage of a repository context. It would be interesting to get a ‘repository’ perspective towards the requirements and expectations of a CRIS; which entities, attributes or relationships are essential.

EPrints: A Hybrid CRIS/Repository?

Carr, Leslie
Fonte: euroCRIS Publicador: euroCRIS
Tipo: Conferência ou Objeto de Conferência
Português
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Talk delivered at the 1st Workshop on CRIS, CERIF and Institutional Repositories, Module 1: "The intersection of data models and metadata concerning IR and CRIS".-- 13 slides; Presentation and ancillary files available at ePrints Soton institutional repository, http://eprints.ecs.soton.ac.uk/21048/; It is a truth universally acknowledged that a repository collects and manages research papers, data, reports, patents and software (curating many kinds of research outputs for immediate access and long-term preservation) but that it is just one of the systems that a CRIS has to interact with. Specialised research databases are used not only for research outputs, but for human resources, project management, finance, grant funding and research expertise. A CRIS offers a comprehensive overview of an institution’s research activities, pulling together information from all of these research-relevant databases to improve the administrative processes of an institution.; EPrints, as a repository, supports the CERIF standard to allow it to communicate with CRIS systems, exchanging relevant information about research publications, to provide a comprehensive picture of the research aspect of an institution’s business activities.; However, in some universities a repository also provides some degree of research management reporting – publications by research group and topic...