Extended version of slides presented at the "404/File Not Found" symposium held at Georgetown University on October 24 2014, see http://www.law.georgetown.edu/library/404/ . The presentation provides a brief overview of the link/reference rot problem and then discusses three complimentary strategies to combat it: Pro-actively capturing web resources that are linked from a seed collection; Referencing the captures by means of annotated links; Accessing the captures using Memento infrastructure.
Slides used for a presentation at the CNI 2013 Fall meeting. Discusses the problem domain of the Hiberlink project, a collaboration between the Los Alamos National Laboratory and the University of Edinburgh, funded by the Andrew W. Mellon Foundation. Hiberlink investigates reference rot in web-based scholarly communication.
Presentation for PIDapalooza 2016. PIDs need to be used to achieve their intended persistence. Our research (reported at WWW2016, see http://arxiv.org/1602.09102) found that a disturbing percentage of references to papers that have DOIs actually use the landing page HTTP URI instead of the DOI HTTP URI. The problem is likely related to tools used for collecting references such as bookmarks and reference managers. These select the landing page URI instead of the DOI URI because the former is what's available in the address bar. It can safely be assumed that the same problem exists for other types of PIDs. The net result is that the true potential of PIDs is not realized. In order to ameliorate this problem we propose a Signposting pattern for PIDs (http://signposting.org/identifier/). It consists of adding a Link header to HTTP HEAD/GET responses for all resources identified by a DOI, including the landing page and content resources such as "the PDF" and "the dataset". The Link header contains a link, which points with the "identifier" relation type to the DOI HTTP URI. When such a link is available, tools can automatically discover and use the DOI URI instead of the other URIs (landing page, PDF, dataset) associated with the DOI-identified object.
To the Rescue of the Orphans of Scholarly CommunicationMartin Klein
To the Rescue of the Orphans of Scholarly Communication
presentation at CNI Spring 2017 meeting
Herbert Van de Sompel
http://orcid.org/0000-0002-0715-6126
Michael L. Nelson
http://orcid.org/0000-0003-3749-8116
Martin Klein
http://orcid.org/0000-0003-0130-2097
These slides go with the paper "Reminiscing About 15 Years of Interoperability Efforts" which is available at http://dx.doi.org/10.1045/november2015-vandesompel
Slides were used for a presentation at the Fall 2015 Membership Meeting of the Coalition for Networked Information.
Various FAIR criteria pertaining to machine interaction with scholarly artifacts can commonly be addressed by means of repository-wide affordances that are uniformly provided for all hosted artifacts rather than through artifact-specific interventions. If various repository platforms provide such affordances in an interoperable manner, devising tools - for both human and machine use - that leverage them becomes easier.
My involvement, over the years, in a range of interoperability efforts has brought the insight that two factors strongly influence adoption: addressing a burning issue and delivering a KISS solution to tackle it. Undoubtedly, FAIR and FAIR DOs are burning issues. FAIR Signposting <https://signposting.org/FAIR/> is an ad-hoc repository interoperability effort that squarely fits in this problem space and that purposely specifies a KISS solution, hoping to inspire wide adoption.
This presentation looks back at several efforts, conducted in the past fifteen years, aimed at establishing interoperability for web-based scholarly communication. It tries to characterize the perspectives/approaches taken by these efforts and, based upon that, proposes an HATEOS-based approach to interlink scholarly nodes on the web. This was first presented at the Research Data Alliance meeting in Paris, France, September 22 2015.
DBpedia Archive using Memento, Triple Pattern Fragments, and HDTHerbert Van de Sompel
DBpedia is the Linked Data version of Wikipedia. Starting in 2007, several DBpedia dumps have been made available for download. In 2010, the Research Library at the Los Alamos National Laboratory used these dumps to deploy a Memento-compliant DBpedia Archive, in order to demonstrate the applicability and appeal of accessing temporal versions of Linked Data sets using the Memento “Time Travel for the Web” protocol. The archive supported datetime negotiation to access various temporal versions of RDF descriptions of DBpedia subject URIs.
In a recent collaboration with the iMinds Group of Ghent University, the DBpedia Archive received a major overhaul. The initial MongoDB storage approach, which was unable to handle increasingly large DBpedia dumps, was replaced by HDT, the Binary RDF Representation for Publication and Exchange. And, in addition to the existing subject URI access point, Triple Pattern Fragments access, as proposed by the Linked Data Fragments project, was added. This allows datetime negotiation for URIs that identify RDF triples that match subject/predicate/object patterns. To add this powerful capability, native Memento support was added to the Linked Data Fragments Server of Ghent University.
In this talk, we will include a brief refresher of Memento, and will cover Linked Data Fragments, Triple Pattern Fragments, and HDT in more detail. We will share lessons learned from this effort and demo the new DBpedia Archive, which, at this point, holds over 5 billion RDF triples.
Presentation for a workshop about persistent identifiers organized by the Royal Library of The Netherlands and DANS. Highlights the non-trivial commitments required of all parties involved in persistent identifier systems to actually keep links based on persistent identifiers ... err ... persistent.
Slides used for a presentation at the CNI 2013 Fall meeting. Discusses the problem domain of the Hiberlink project, a collaboration between the Los Alamos National Laboratory and the University of Edinburgh, funded by the Andrew W. Mellon Foundation. Hiberlink investigates reference rot in web-based scholarly communication.
Presentation for PIDapalooza 2016. PIDs need to be used to achieve their intended persistence. Our research (reported at WWW2016, see http://arxiv.org/1602.09102) found that a disturbing percentage of references to papers that have DOIs actually use the landing page HTTP URI instead of the DOI HTTP URI. The problem is likely related to tools used for collecting references such as bookmarks and reference managers. These select the landing page URI instead of the DOI URI because the former is what's available in the address bar. It can safely be assumed that the same problem exists for other types of PIDs. The net result is that the true potential of PIDs is not realized. In order to ameliorate this problem we propose a Signposting pattern for PIDs (http://signposting.org/identifier/). It consists of adding a Link header to HTTP HEAD/GET responses for all resources identified by a DOI, including the landing page and content resources such as "the PDF" and "the dataset". The Link header contains a link, which points with the "identifier" relation type to the DOI HTTP URI. When such a link is available, tools can automatically discover and use the DOI URI instead of the other URIs (landing page, PDF, dataset) associated with the DOI-identified object.
To the Rescue of the Orphans of Scholarly CommunicationMartin Klein
To the Rescue of the Orphans of Scholarly Communication
presentation at CNI Spring 2017 meeting
Herbert Van de Sompel
http://orcid.org/0000-0002-0715-6126
Michael L. Nelson
http://orcid.org/0000-0003-3749-8116
Martin Klein
http://orcid.org/0000-0003-0130-2097
These slides go with the paper "Reminiscing About 15 Years of Interoperability Efforts" which is available at http://dx.doi.org/10.1045/november2015-vandesompel
Slides were used for a presentation at the Fall 2015 Membership Meeting of the Coalition for Networked Information.
Various FAIR criteria pertaining to machine interaction with scholarly artifacts can commonly be addressed by means of repository-wide affordances that are uniformly provided for all hosted artifacts rather than through artifact-specific interventions. If various repository platforms provide such affordances in an interoperable manner, devising tools - for both human and machine use - that leverage them becomes easier.
My involvement, over the years, in a range of interoperability efforts has brought the insight that two factors strongly influence adoption: addressing a burning issue and delivering a KISS solution to tackle it. Undoubtedly, FAIR and FAIR DOs are burning issues. FAIR Signposting <https://signposting.org/FAIR/> is an ad-hoc repository interoperability effort that squarely fits in this problem space and that purposely specifies a KISS solution, hoping to inspire wide adoption.
This presentation looks back at several efforts, conducted in the past fifteen years, aimed at establishing interoperability for web-based scholarly communication. It tries to characterize the perspectives/approaches taken by these efforts and, based upon that, proposes an HATEOS-based approach to interlink scholarly nodes on the web. This was first presented at the Research Data Alliance meeting in Paris, France, September 22 2015.
DBpedia Archive using Memento, Triple Pattern Fragments, and HDTHerbert Van de Sompel
DBpedia is the Linked Data version of Wikipedia. Starting in 2007, several DBpedia dumps have been made available for download. In 2010, the Research Library at the Los Alamos National Laboratory used these dumps to deploy a Memento-compliant DBpedia Archive, in order to demonstrate the applicability and appeal of accessing temporal versions of Linked Data sets using the Memento “Time Travel for the Web” protocol. The archive supported datetime negotiation to access various temporal versions of RDF descriptions of DBpedia subject URIs.
In a recent collaboration with the iMinds Group of Ghent University, the DBpedia Archive received a major overhaul. The initial MongoDB storage approach, which was unable to handle increasingly large DBpedia dumps, was replaced by HDT, the Binary RDF Representation for Publication and Exchange. And, in addition to the existing subject URI access point, Triple Pattern Fragments access, as proposed by the Linked Data Fragments project, was added. This allows datetime negotiation for URIs that identify RDF triples that match subject/predicate/object patterns. To add this powerful capability, native Memento support was added to the Linked Data Fragments Server of Ghent University.
In this talk, we will include a brief refresher of Memento, and will cover Linked Data Fragments, Triple Pattern Fragments, and HDT in more detail. We will share lessons learned from this effort and demo the new DBpedia Archive, which, at this point, holds over 5 billion RDF triples.
Presentation for a workshop about persistent identifiers organized by the Royal Library of The Netherlands and DANS. Highlights the non-trivial commitments required of all parties involved in persistent identifier systems to actually keep links based on persistent identifiers ... err ... persistent.
This slide deck provides an overview of proposals to use HTTP Links as a means to address some long standing problems related to scholarly resources on the web.
Presentation about reference rot given at the Complexity Science Hub in Vienna, November 2021.
Links to web resources frequently break (link rot), and linked content can change at unpredictable rates (content drift). These dynamics of the Web are detrimental when references to web resources provide evidence or supporting information.
This presentation will report on research that assessed the extent of these problems for links to web resources in scholarly literature, by using three vast corpora of publications and a range of public web archives. It will also describe the Robust Link approach that offers a proactive, uniform, and machine-actionable way to combat link rot and content drift. Finally, it will introduce the Robustify web service and API that was devised to generate links that remain functional over time, paying special attention to challenges related to deploying infrastructure that is required to be long lasting.
This slide deck provides an overview of proposals to use HTTP Links as a means to address some long standing problems related to scholarly resources on the web.
Quantifying Orphaned Annotations in Hypothes.ismaturban
Web annotation has been receiving increased attention recently with the organization of the Open Annotation Collaboration and new tools for open annotation, such as Hypothes.is. In this paper, we investigate the prevalence of orphaned annotations, where a live Web page no longer contains the text that had previously been annotated in the
Hypothes.is annotation system (containing 20,953 highlighted text annotations).
Looks at hyperlinks from the perspective of a managed collection of resources for which link persistence/integrity is considered a quality of service concern. Distinguishes between links into other managed collections and to the web at large. Considers link rot and content drift.
"Scholarly Communication: Deconstruct and Decentralize" was presented at the Fall 2017 Meeting of the Coalition for Networked Information. It explores working towards a Scholarly Commons by applying decentralized web ideas to scholarly communication.
This presentation provides an overview of the Memento "Time Travel for the Web" framework that is aligned with the stable version of the Memento protocol, specified in RFC 7089.
https://doi.org/10.6084/m9.figshare.11854626.v1
Presented at Dutch National Librarian/Information Professianal Association annual conference 2011 - NVB2011
November 17, 2011
Reference Rot in Scholarly Communication: A Reliable Quantification and a P...Martin Klein
As research and research communication nowadays happen on the web, scholarly articles increasingly link to resources that are not necessarily considered part of the scholarly record but are rather so-called web-at-large resources such as project websites, online debates, presentations, blogs, videos, etc. Our research (reported in PLOS ONE [1]) found overwhelming evidence for this trend and showed the severity of link rot for such references. Our more recent study [2] provides unprecedented insight into the vast extent of content drift for these references. We speak of content drift when the content of a referenced resource evolves after the publication of the referencing article, in many cases, beyond recognition. Reference rot, the combination of link rot and content drift, makes it impossible to revisit the context that surrounded these research papers as it was at the time of writing and must therefore be considered a significant detriment to scholarly communication. In order to introduce a level of persistence for the scholarly context we devised the Robust Links approach that consists of archiving referenced web-at-large resources and referencing them using Link Decoration [3]. The proposed approach is aimed at providing optimal guarantees that referenced web-at-large resources can be revisited as they were when a paper referenced them.
In this presentation we will report on both studies, provide a reliable quantification of the reference rot problem and discuss our solution to address it. Robust Links are demonstrated in a recently published paper [4].
[1] http://dx.doi.org/10.1371/journal.pone.0115253
[2] http://dx.doi.org/10.1371/journal.pone.0167475
[3] http://robustlinks.mementoweb.org/spec/
[4] http://dx.doi.org/10.1045/november2015-vandesompel
The evolution of the Web should move forward in an upward spiral that cylces between guiding values, engineering and science. Guiding values should comprise social values as well as system principles that further stabilization and growth of the Web. Principles I will talk about will include social inclusion, connectedness and fairness. Example efforts improve Web access for disabled, critically access Web structures and Web growth, and try to transfer knowledge about previously found patterns of Web growth to analogous cases.
Registration / Certification Interoperability Architecture (overlay peer-review)Herbert Van de Sompel
Presentation for the COAR meeting on Overlay Peer-Review held at INRIA, Paris, France. It provides overall context regarding a scholarly communication system in which the core functions of scholarly communication (registration, certification, awareness, archiving) are implemented in a decoupled manner and whereby each function can simultaneously be fulfilled by different parties, potentially in different ways. It shows how notifications can be used to achieve loosely coupled, point-to-point interoperability in such an environment, zooming in on interoperability between registration and certification aka interoperability between repositories and overlay peer-review services.
TPDL2013 tutorial linked data for digital libraries 2013-10-22jodischneider
Tutorial on Linked Data for Digital Libraries, given by me, Uldis Bojars, and Nuno Lopes in Valletta, Malta at TPDL2013 on 2013-10-22.
http://tpdl2013.upatras.gr/tut-lddl.php
This half-day tutorial is aimed at academics and practitioners interested in creating and using Library Linked Data. Linked Data has been embraced as the way to bring complex information onto the Web, enabling discoverability while maintaining the richness of the original data. This tutorial will offer participants an overview of how digital libraries are already using Linked Data, followed by a more detailed exploration of how to publish, discover and consume Linked Data. The practical part of the tutorial will include hands-on exercises in working with Linked Data and will be based on two main case studies: (1) linked authority data and VIAF; (2) place name information as Linked Data.
For practitioners, this tutorial provides a greater understanding of what Linked Data is, and how to prepare digital library materials for conversion to Linked Data. For researchers, this tutorial updates the state of the art in digital libraries, while remaining accessible to those learning Linked
Data principles for the first time. For library and iSchool instructors, the tutorial provides a valuable introduction to an area of growing interest for information organization curricula. For digital library project managers, this tutorial provides a deeper understanding of the principles of Linked Data, which is needed for bespoke projects that involve data mapping and the reuse of existing metadata models.
Researcher Pod: Scholarly Communication Using the Decentralized WebHerbert Van de Sompel
The presentation provides an overview of the motivation and direction of the Mellon-funded Researcher Pod project that investigates technical aspects of scholarly communication in a decentralized web setting.
Slides used for a keynote presentation at the VIVO 2019 Conference in Podgorica, Montenegro.
Abstract: The invitation to present a keynote at the VIVO Conference and the goal of the VIVO platform, as stated on the DuraSpace site, to create an integrated record of the scholarly work of an organisation reminded me of various efforts that I have been involved in over the past years that had similar goals. EgoSystem (2014) attempted to gather information about postdocs that had left the organisation, leaving little or no contact details behind. Autoload (2017), an operational service, discovers papers by organisational researchers in order to upload them in the institutional repository. myresearch.institute (2018), an experiment that is still in progress, discovers artefacts that researchers deposit in web productivity portals and subsequently archives them. More recently, I have been involved in thinking about the future of NARCIS, a portal that provides an overview of research productivity in The Netherlands. The approach taken in all these efforts share a characteristic motivated by a desire to devise scalable and sustainable solutions: let machines rather than humans do the work. In this talk, I will provide an overview of these efforts, their motivations, the challenges involved, and the nature of success (if any).
This slide deck provides an overview of proposals to use HTTP Links as a means to address some long standing problems related to scholarly resources on the web.
Presentation about reference rot given at the Complexity Science Hub in Vienna, November 2021.
Links to web resources frequently break (link rot), and linked content can change at unpredictable rates (content drift). These dynamics of the Web are detrimental when references to web resources provide evidence or supporting information.
This presentation will report on research that assessed the extent of these problems for links to web resources in scholarly literature, by using three vast corpora of publications and a range of public web archives. It will also describe the Robust Link approach that offers a proactive, uniform, and machine-actionable way to combat link rot and content drift. Finally, it will introduce the Robustify web service and API that was devised to generate links that remain functional over time, paying special attention to challenges related to deploying infrastructure that is required to be long lasting.
This slide deck provides an overview of proposals to use HTTP Links as a means to address some long standing problems related to scholarly resources on the web.
Quantifying Orphaned Annotations in Hypothes.ismaturban
Web annotation has been receiving increased attention recently with the organization of the Open Annotation Collaboration and new tools for open annotation, such as Hypothes.is. In this paper, we investigate the prevalence of orphaned annotations, where a live Web page no longer contains the text that had previously been annotated in the
Hypothes.is annotation system (containing 20,953 highlighted text annotations).
Looks at hyperlinks from the perspective of a managed collection of resources for which link persistence/integrity is considered a quality of service concern. Distinguishes between links into other managed collections and to the web at large. Considers link rot and content drift.
"Scholarly Communication: Deconstruct and Decentralize" was presented at the Fall 2017 Meeting of the Coalition for Networked Information. It explores working towards a Scholarly Commons by applying decentralized web ideas to scholarly communication.
This presentation provides an overview of the Memento "Time Travel for the Web" framework that is aligned with the stable version of the Memento protocol, specified in RFC 7089.
https://doi.org/10.6084/m9.figshare.11854626.v1
Presented at Dutch National Librarian/Information Professianal Association annual conference 2011 - NVB2011
November 17, 2011
Reference Rot in Scholarly Communication: A Reliable Quantification and a P...Martin Klein
As research and research communication nowadays happen on the web, scholarly articles increasingly link to resources that are not necessarily considered part of the scholarly record but are rather so-called web-at-large resources such as project websites, online debates, presentations, blogs, videos, etc. Our research (reported in PLOS ONE [1]) found overwhelming evidence for this trend and showed the severity of link rot for such references. Our more recent study [2] provides unprecedented insight into the vast extent of content drift for these references. We speak of content drift when the content of a referenced resource evolves after the publication of the referencing article, in many cases, beyond recognition. Reference rot, the combination of link rot and content drift, makes it impossible to revisit the context that surrounded these research papers as it was at the time of writing and must therefore be considered a significant detriment to scholarly communication. In order to introduce a level of persistence for the scholarly context we devised the Robust Links approach that consists of archiving referenced web-at-large resources and referencing them using Link Decoration [3]. The proposed approach is aimed at providing optimal guarantees that referenced web-at-large resources can be revisited as they were when a paper referenced them.
In this presentation we will report on both studies, provide a reliable quantification of the reference rot problem and discuss our solution to address it. Robust Links are demonstrated in a recently published paper [4].
[1] http://dx.doi.org/10.1371/journal.pone.0115253
[2] http://dx.doi.org/10.1371/journal.pone.0167475
[3] http://robustlinks.mementoweb.org/spec/
[4] http://dx.doi.org/10.1045/november2015-vandesompel
The evolution of the Web should move forward in an upward spiral that cylces between guiding values, engineering and science. Guiding values should comprise social values as well as system principles that further stabilization and growth of the Web. Principles I will talk about will include social inclusion, connectedness and fairness. Example efforts improve Web access for disabled, critically access Web structures and Web growth, and try to transfer knowledge about previously found patterns of Web growth to analogous cases.
Registration / Certification Interoperability Architecture (overlay peer-review)Herbert Van de Sompel
Presentation for the COAR meeting on Overlay Peer-Review held at INRIA, Paris, France. It provides overall context regarding a scholarly communication system in which the core functions of scholarly communication (registration, certification, awareness, archiving) are implemented in a decoupled manner and whereby each function can simultaneously be fulfilled by different parties, potentially in different ways. It shows how notifications can be used to achieve loosely coupled, point-to-point interoperability in such an environment, zooming in on interoperability between registration and certification aka interoperability between repositories and overlay peer-review services.
TPDL2013 tutorial linked data for digital libraries 2013-10-22jodischneider
Tutorial on Linked Data for Digital Libraries, given by me, Uldis Bojars, and Nuno Lopes in Valletta, Malta at TPDL2013 on 2013-10-22.
http://tpdl2013.upatras.gr/tut-lddl.php
This half-day tutorial is aimed at academics and practitioners interested in creating and using Library Linked Data. Linked Data has been embraced as the way to bring complex information onto the Web, enabling discoverability while maintaining the richness of the original data. This tutorial will offer participants an overview of how digital libraries are already using Linked Data, followed by a more detailed exploration of how to publish, discover and consume Linked Data. The practical part of the tutorial will include hands-on exercises in working with Linked Data and will be based on two main case studies: (1) linked authority data and VIAF; (2) place name information as Linked Data.
For practitioners, this tutorial provides a greater understanding of what Linked Data is, and how to prepare digital library materials for conversion to Linked Data. For researchers, this tutorial updates the state of the art in digital libraries, while remaining accessible to those learning Linked
Data principles for the first time. For library and iSchool instructors, the tutorial provides a valuable introduction to an area of growing interest for information organization curricula. For digital library project managers, this tutorial provides a deeper understanding of the principles of Linked Data, which is needed for bespoke projects that involve data mapping and the reuse of existing metadata models.
Researcher Pod: Scholarly Communication Using the Decentralized WebHerbert Van de Sompel
The presentation provides an overview of the motivation and direction of the Mellon-funded Researcher Pod project that investigates technical aspects of scholarly communication in a decentralized web setting.
Slides used for a keynote presentation at the VIVO 2019 Conference in Podgorica, Montenegro.
Abstract: The invitation to present a keynote at the VIVO Conference and the goal of the VIVO platform, as stated on the DuraSpace site, to create an integrated record of the scholarly work of an organisation reminded me of various efforts that I have been involved in over the past years that had similar goals. EgoSystem (2014) attempted to gather information about postdocs that had left the organisation, leaving little or no contact details behind. Autoload (2017), an operational service, discovers papers by organisational researchers in order to upload them in the institutional repository. myresearch.institute (2018), an experiment that is still in progress, discovers artefacts that researchers deposit in web productivity portals and subsequently archives them. More recently, I have been involved in thinking about the future of NARCIS, a portal that provides an overview of research productivity in The Netherlands. The approach taken in all these efforts share a characteristic motivated by a desire to devise scalable and sustainable solutions: let machines rather than humans do the work. In this talk, I will provide an overview of these efforts, their motivations, the challenges involved, and the nature of success (if any).
Presentation for PIDapalooza 2019, Dublin, Ireland.
The Scholarly Orphans project, funded by the Andrew W. Mellon Foundation, explores technical approaches aimed at capturing and archiving scholarly artifacts that researchers deposit in web productivity portals as a means to collaborate and communicate with their peers. These artifacts are not collected by other frameworks aimed at archiving the scholarly record (e.g., LOCKSS, Portico, Institutional Repositories) and are only incidentally captured by web archives. The project explores an institution-driven approach inspired by web archiving. To demonstrate the ongoing thinking, the project has devised an experimental automated pipeline that continuously discovers, captures, and archives artifacts. These are created by actual researchers who, for the purpose of the experiment, were virtually enlisted in a fictive research institution. A portal at myresearch.institute provides an overview of the artifacts that were discovered and provides access to archived versions stored in both an institutional and a cross-institutional archive. The set-up leverages a range of technologies that share a flavor of persistence: Memento, Memento Tracer, Robust Links, Signposting.
As a memento of my last week of working at LANL, I put together a slide deck that provides an overview of major efforts conducted during the time I was there.
Presentation given at EuropeanaTech 2018 in Rotterdam, The Netherlands. Provides a summary of insights gained from working for about a decade on challenges related to temporal aspects of the web, persistence.
This presentation introduces ResourceSync, a specification aimed to enable web-based synchronization of resources. The specification is the result of a collaboration between NISO and the Open Archives Initiative funded by the Sloan Foundation and JISC. The proposed resource synchronization approach is based on several existing specifications (e.g. Sitemaps, PubSubHubbub, well-known URI) and is aligned with common architectural principles (e.g. REST, follow your nose).
A 15 minute video version of these slides is available at https://www.youtube.com/watch?v=ASQ4jMYytsA
As the scholarly communication system evolves to become natively web-based and starts supporting the communication of a wide variety of objects, the manner in which its essential functions – registration, certification, awareness, archiving - are fulfilled co-evolves. This presentation focuses on the nature of the archival function based on a perspective of the future scholarly communication infrastructure. This presentation, prepared for a meeting in June 2014, is based on and updates a previous one that was prepared for a January 2014 meeting. The latter is available at http://www.slideshare.net/atreloar/scholarly-archiveofthefuture
The slides were used to accompany an overview of the outcomes of the ResourceSync project at the 2014 Spring Membership Meeting of the Coalition for Networked Information (CNI).
The launch of ResourceSync, a joint project of the National Information Standards Organization (NISO) and the Open Archives Initiative (OAI) funded by the Alfred P. Sloan Foundation, was motivated by the ubiquitous need to synchronize resources for applications in the realm of cultural heritage and research communication. After an initial problem definition and scoping phase, the project has designed, specified, and tested a framework for web-based synchronization that is based on SiteMaps, a protocol widely used by web servers to advertise the resources they make available to search engines for indexing. This choice allows repositories to address both search engine optimization and resource synchronization needs using the same technology.
The ResourceSync framework specifies various modular capabilities that a repository can support in order to allow third party systems to remain synchronized with its evolving resources. For example, a Resource List provides an inventory of resources whereas a Change List details resources that were created, deleted or updated during a given temporal interval. Support for capabilities can be combined in order to meet local or community requirements. The framework specifies capabilities that require a third party to recurrently poll for up-to-date information about a repositories’ resources but also publish/subscribe capabilities that keep third parties informed about changes through notifications, thereby significantly reducing synchronization latency.
Persistent Identifiers and the Web: The Need for an Unambiguous MappingHerbert Van de Sompel
Presentation given at the International Digital Curation Conference in San Francisco, February 26 2014. Highlights the lack of machine-actionability of persistent identifiers assigned to scholarly communication assets. Proposes an approach to address the issue that meets requirements that take into account the changing nature of web based research communication. A draft paper provides more details: http://public.lanl.gov/herbertv/papers/Papers/2014/IDCC2014_vandesompel.pdf
Keynote presentation delivered at ELAG 2013 in Gent, Belgium, on May 29 2013. Discusses Research Objects and the relationship to work my team has been involved in during the past couple of years: OAI-ORE, Open Annotation, Memento.
Presentation given at the EMTACL12 conference in Trondheim, Norway, on October 1 2012. Discusses the evolution towards a highly dynamic scholarly record (assets don't have the sense of fixity they used to have; assets are highly interdependent) and how the archiving infrastructure used for scholarly communication can not adequately deal with this dynamism.
This presentation provides a problem perspective from the recently launched NISO/OAI ResourceSync effort that aims at devisions a framework for synchronizing web resources. The slides were used during a WebEx conference on March 6 2012.
The presentation explores the trend towards a scholarly communication system that is friendly to machines. It presents 3 exhibits illustrating the trend and 1 exhibit illustrating inertia in the system. It makes the point that machine-actionability can be much easier achieved if content and metadata are available in Open Access and under a permissive Creative Commons license. It also observes that even with content and metadata openly available, new costs related to advanced tools to explore the scholarly record will emerge. Finally, it points at significant challenges regarding the persistence of the scholarly record in light of increasingly interconnected and actionable content and advanced tools to interact with it.
The slides were used for a plenary presentation at the LIBER 2011 Conference in Barcelona, Spain, on June 30 2011.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
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Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
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- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
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Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
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Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
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DevOps and Testing slides at DASA ConnectKari Kakkonen
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The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
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Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
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We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
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Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
1. Creating Pockets of Persistence
Herbert Van de Sompel
@hvdsomp
http://public.lanl.gov/herbertv/
Los Alamos National Laboratory
Acknowledgements:
Michael L. Nelson
@phonedude_mln
Old Dominion University
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
2. Addressing the Link/Reference Rot Challenge
• Pockets of Persistence
• Capture – Archive Pro-Actively, Selectively
• Reference – Annotate Links
• Access – Travel in Time
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
3. Pockets of Persistence
Herbert Van de Sompel
How to achieve the ability to:
404/File Not Found, Washington, DC, October 24 2014
• Persistently
• Precisely
• Seamlessly
revisit the Web of the Past
and the Web of the Now at
some point in the Future
4. Pockets of Persistence
Herbert Van de Sompel
How to achieve the ability to:
404/File Not Found, Washington, DC, October 24 2014
• Persistently
• Precisely
• Seamlessly
revisit the Web of the Past
and the Web of the Now at
some point in the Future
Two components to the link/reference rot
challenge:
• Link rot: Links stop working aka 404
Not Found
• Content drift: Referenced content
changes over time
5. Illustration
Herbert Van de Sompel
Current version of http://en.wikipedia.org/wiki/Coil_(band) on October 22 2014
404/File Not Found, Washington, DC, October 24 2014
6. Illustration – Link Rot
Herbert Van de Sompel
Current version of http://en.wikipedia.org/wiki/Coil_(band) on October 22 2014
404/File Not Found, Washington, DC, October 24 2014
7. Illustration – Link Rot
Herbert Van de Sompel
Current version of http://liarsociety.tripod.com/blog/index.blog?from=20041130 on October 22 2014
404/File Not Found, Washington, DC, October 24 2014
8. Illustration – Content Drift
Version of http://en.wikipedia.Herbert org/Van wiki/de Coil_(Sompel
band) dated October 2 2014
http://en.wikipedia.org/w/index.php?title=Coil_(band)&oldid=388321480
404/File Not Found, Washington, DC, October 24 2014
9. Illustration – Content Drift
Herbert Van de Sompel
Current version of http://en.wikipedia.org/wiki/Peter_Christopherson on October 22 2014
404/File Not Found, Washington, DC, October 24 2014
10. Illustration – Content Drift
Version of http://en.wikipedia.org/wiki/Peter_Christopherson that was current on October 2 2010
Herbert Van de Sompel
http://en.wikipedia.org/w/index.php?title=Peter_Christopherson&oldid=387987414
404/File Not Found, Washington, DC, October 24 2014
11. Pockets of Persistence
Herbert Van de Sompel
How to achieve the ability to:
404/File Not Found, Washington, DC, October 24 2014
• Persistently
• Precisely
• Seamlessly
revisit the Web of the Past
and the Web of the Now at
some point in the Future
This challenge exists for the entire web,
but some communities actually care
about addressing it:
• scholarly communication,
• legal publications,
• journalism,
• Wikipedia,
• …
Mobilize the communities that care about
this problem to work towards joint,
interoperable solutions, approaches
12. Addressing the Link/Reference Rot Challenge
• Pockets of Persistence
• Capture – Archive Pro-Actively, Selectively
• Reference – Annotate Links
• Access – Travel in Time
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
13. Pro-Active Capture for a Seed Collection
• Seed Collection - Starting point for capture is a seed collection of
interest to communities that care, e.g.
o On-Line journalism
• Lifecycle Events – Intervene at critical moments in the lifecycle of
items in these collections to pro-actively capture
o Collection items – some solutions in place
o Web resources referenced in collection items
Herbert Van de Sompel
o Scholarly literature
o Legal documents
o Wikipedia articles
404/File Not Found, Washington, DC, October 24 2014
14. Pro-Active Capture for Seed Collection
• What those crucial lifecycle events are may depend on the
• Creation of new article
• Creation of new version of
article
• Creation of substantially
new version of article
• Addition of external
reference to article
• References to article
exceed a certain threshold
Scholarly Literature
Herbert Van de Sompel
collection type
Wikipedia
404/File Not Found, Washington, DC, October 24 2014
15. Authoring Legal Documents – perma.cc
Herbert Van de Sompel
http://perma.cc
404/File Not Found, Washington, DC, October 24 2014
16. Authoring Scholarly Literature: Experimental Zotero Extension
Richard Wincewicz (2014) Prototype Hiberlink plugin for Zotero for pro-active archiving and temporal references
Herbert Van de Sompel
https://www.youtube.com/v/ZYmi_Ydr65M%26vq
404/File Not Found, Washington, DC, October 24 2014
17. Submitting Scholarly Literature: Experimental HiberActive Service
Martin Klein et al. (2014) HiberActive: Pro-Active Archiving of web references from scholarly articles
Herbert Van de Sompel
Open Repositories 2014 http://www.slideshare.net/martinklein0815/hiberactive
404/File Not Found, Washington, DC, October 24 2014
18. Pro-Active Capture for Seed Collection
• Interoperability for on-demand capture:
o Need basic interoperability for machine-driven on-demand
capture:
- Discovery of capture interface
- Interface IN - [ Original URI ]
- Interface OUT - [ URI of Capture ; Capture Datetime ]
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
19. Addressing the Link/Reference Rot Challenge
• Pockets of Persistence
• Capture – Archive Pro-Actively, Selectively
• Reference – Annotate Links
• Access – Travel in Time
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
20. Reference Captures and Annotate Links
• Existing practice for linking to captures:
o Link to URI of Capture
o Lose Capture Datetime
• Problems with existing practice:
o Impossible to visit the original URI, if desired
o Requires the permanent existence/uptime of the archive that
holds the capture
- One link rot problem replaced by another
Van de Sompel, H. et al. (2013) Thoughts on referencing, linking, reference rot
Herbert Van de Sompel
o Lose Original URI
http://mementoweb.org/missing-link/
404/File Not Found, Washington, DC, October 24 2014
21. Permanent Existence/Uptime of Archives?
Capture of http://webcitation.org dated July 17 2013
Herbert Van de Sompel
https://archive.today/eAETp
404/File Not Found, Washington, DC, October 24 2014
22. Permanent Existence/Uptime of Archives?
Herbert Van de Sompel
http://webcitation.org/ on August 6 2014
404/File Not Found, Washington, DC, October 24 2014
23. Permanent Existence/Uptime of Archives?
Remnant of discontinued web archive http://mummify.it captured on February 14 2014
Herbert Van de Sompel
https://web.archive.org/web/20140214233752/https://www.mummify.it/
404/File Not Found, Washington, DC, October 24 2014
24. Permanent Existence/Uptime of Archives?
http://www.themoscowtimes.com/news/article/russia-bans-wayback-machine-internet-archive-over-islamic-state-video/
Herbert Van de Sompel
510074.html
404/File Not Found, Washington, DC, October 24 2014
25. Hacking Original URI, Capture Datetime from Capture URI?
URI of Capture Original URI Datetime T
https://web.archive.org/web/20140214233752/https://
www.mummify.it
https://archive.today/eAETp no no
http://perma.cc/4RH7-999Q?type=source no no
http://en.wikipedia.org/w/index.php?title=Coil_(band)
&oldid=388321480
Herbert Van de Sompel
yes yes
no no
404/File Not Found, Washington, DC, October 24 2014
26. Using Capture URI to find Captures in Other Web Archives?
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
27. Using Capture URI to find Captures in Other Web Archives?
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
28. Reference Captures and Annotate Links
• Desired practice for linking to captures is to annotate the link so it
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
conveys:
- URI of Capture
- Original URI
- Capture Datetime
• Link annotation supports fallback to other archives:
o Original URI allows finding captures in all web archives
o Capture Datetime allows finding an appropriate capture in all
web archives
o Original URI and Capture Datetime allows automatic access
to an appropriate capture in all web archives (see Access)
Van de Sompel, H. et al. (2013) Thoughts on referencing, linking, reference rot
http://mementoweb.org/missing-link/
29. Reference Captures and Annotate Links
• Desired practice for linking to captures is to annotate the link so it
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
conveys:
URI of Capture
Original URI Capture Datetime
30. Reference Captures and Annotate Links
• Interoperability for link annotation:
o Need an approach to convey, in a uniform, machine-actionable
- URI of Capture
- Original URI
- Capture Datetime
o Missing Link Proposal
- http://mementoweb.org/missing-link/
o W3C Robustness and Archiving Community Group
- http://www.w3.org/community/irobar/
Herbert Van de Sompel
way:
• Ongoing efforts:
404/File Not Found, Washington, DC, October 24 2014
31. Missing Link Proposal
<a href=“http://liarsociety.tripod.com/blog/index.blog?from=20041130”
data-versionurl=“https://archive.today/ElCHn”
data-versiondate=“2008-02-06T00:00:00Z”>
Herbert Van de Sompel
URI of Capture
Capture Datetime
404/File Not Found, Washington, DC, October 24 2014
Original URI
Van de Sompel, H. et al. (2013) Thoughts on referencing, linking, reference rot
http://mementoweb.org/missing-link/
32. Addressing the Link/Reference Rot Challenge
• Pockets of Persistence
• Capture – Archive Pro-Actively, Selectively
• Reference – Annotate Links
• Access – Travel in Time
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
33. Memento Web Time Travel
Use the Original URI
Herbert Van de Sompel
Current version of http://law.georgetown.edu/library/404/ on October 22 2014
404/File Not Found, Washington, DC, October 24 2014
34. Memento Web Time Travel
And a Datetime
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
35. Memento Web Time Travel
To automatically retrieve the temporally nearest available capture
Capture of http://law.georgetown.edu/library/404/ dated May 3 2014
Herbert Van de Sompel
http://wayback.archive-it.org/all/20140503094327/http://www.law.georgetown.edu/library/404/
404/File Not Found, Washington, DC, October 24 2014
36. Memento Web Time Travel
http://bit.ly/memento-for-chrome
Herbert Van de Sompel
http://mementoweb.org
404/File Not Found, Washington, DC, October 24 2014
37. Travel in Time - Persistently, Precisely, Seamlessly
On-Demand Capture URI of Capture Original URI Datetime T
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
Available
Accessible
+ - -
• Time Travel is:
• Persistent – See next slide
• Precise – Following link to URI of Capture retrieves exact
capture
• Seamless – Requires clicking a link as usual
38. Travel in Time - Persistently, Precisely, Seamlessly
On-Demand Capture URI of Capture Original URI Datetime T
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
Available
Not Accessible
+ - -
• Time Travel is:
• Persistent – Following link to URI of Capture leads nowhere
• Precise – Following link to URI of Capture leads nowhere
• Seamless – Following link to URI of Capture leads nowhere
39. Travel in Time - Persistently, Precisely, Seamlessly
On-Demand Capture URI of Capture Original URI Datetime T
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
Available
Not Accessible
+ + +
• Time Travel is:
• Persistent – Using Memento with [ Original URI ; Datetime ]
works across web archives, versioning systems
• Precise – Using Memento with [ Original URI ; Datetime ]
retrieves nearest capture from other archive
• Seamless – Requires browser plugin
40. Travel in Time - Persistently, Precisely, Seamlessly
On-Demand Capture URI of Capture Original URI Datetime T
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
Available
Accessible
- + +
• Time Travel is:
• Persistent – Using Memento with [ Original URI ; Datetime ]
works across web archives, versioning systems
• Precise – Using Memento with [ Original URI ; Datetime ]
retrieves exact capture from other archive
• Seamless – Requires browser plugin
41. Travel in Time - Persistently, Precisely, Seamlessly
On-Demand Capture URI of Capture Original URI Datetime T
Not Available - + +
• Persistent – Using Memento with [ Original URI ; Datetime ]
works across web archives, versioning systems
• Precise – Using Memento with [ Original URI ; Datetime ]
retrieves nearest capture from other archive
• Seamless – Requires browser plugin
Herbert Van de Sompel
• Time Travel is:
404/File Not Found, Washington, DC, October 24 2014
42. Reference Captures and Annotate Links
• Interoperability for time travel:
o Memento protocol specifies interoperability across web
archives, version management systems
o Memento protocol is supported by major web archives
o Need to work towards Memento support by version
management systems
o Need to work towards making Memento experience
seamless through native browser support
o Need to work towards robustness and sustainability of
Memento infrastructure
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
43. Conclusion
• Significant technical solutions, infrastructure, ideas exist to
address the link rot/reference rot challenge
• Mobilize the communities that care about this challenge to work
towards joint, interoperable approaches
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014
44. Creating Pockets of Persistence
http://mementoweb.org
http://hiberlink.org
Herbert Van de Sompel
404/File Not Found, Washington, DC, October 24 2014