Automating the moderation process in GEO using trust metrics

Distributed knowledge bases offer novel and fascinating ways to build, integrate and process knowledge. In these distributed knowledge bases, many users collaborate and contribute content. Verification and validation of the user\u27s contributions become imperative for the success of these knowledge bases, especially if it is a scientific knowledge base. However, manually verifying and moderating the contributions become a bottleneck for an up-to-date system. In this thesis, we propose an algorithm to automate the moderation process and we implement the algorithm in an open scientific knowledge base application called Global Energy Observatory (GEO). Using Trust Metrics, user\u27s contributions can be automatically accepted without waiting for the moderators to verify and validate them. This provides users with a smooth, hassle free experience when they contribute data. We also provide empirical analysis to substantiate our algorithm. An open information exchange architecture, that makes use of Semantic Web formats is also presented

Bringing Web Time Travel to MediaWiki: An Assessment of the Memento MediaWiki Extension

We have implemented the Memento MediaWiki Extension Version 2.0, which brings the Memento Protocol to MediaWiki, used by Wikipedia and the Wikimedia Foundation. Test results show that the extension has a negligible impact on performance. Two 302 status code datetime negotiation patterns, as defined by Memento, have been examined for the extension: Pattern 1.1, which requires 2 requests, versus Pattern 2.1, which requires 3 requests. Our test results and mathematical review find that, contrary to intuition, Pattern 2.1 performs better than Pattern 1.1 due to idiosyncrasies in MediaWiki. In addition to implementing Memento, Version 2.0 allows administrators to choose the optional 200-style datetime negotiation Pattern 1.2 instead of Pattern 2.1. It also permits administrators the ability to have the Memento MediaWiki Extension return full HTTP 400 and 500 status codes rather than using standard MediaWiki error pages. Finally, version 2.0 permits administrators to turn off recommended Memento headers if desired. Seeing as much of our work focuses on producing the correct revision of a wiki page in response to a user's datetime input, we also examine the problem of finding the correct revisions of the embedded resources, including images, stylesheets, and JavaScript; identifying the issues and discussing whether or not MediaWiki must be changed to support this functionality.Comment: 23 pages, 18 figures, 9 tables, 17 listing

Implementing Time Travel for the Web

This article discusses the challenges and solutions discovered for implementing the Memento protocol in a variety of browser environments. It describes the design and deployment of the client technologies which have been developed: a web application that functioned as a browser, an add-on for FireFox called MementoFox, a plugin for Internet Explorer and an Android-based client application. The design and technical solutions identified during the development will be of interest to those considering implementation of a Memento based platform, especially on the client side, however the interactions are also important for building conformant server-side systems

Memento: Time Travel for the Web

PDF of a powerpoint presentation from the Web UNC Scholarly Communications Working Group Meeting, Chapel Hill, North Carolina, November 10, 2010. Also available on Slideshare.https://digitalcommons.odu.edu/computerscience_presentations/1020/thumbnail.jp

Persistent Identifiers for Scholarly Assets and the Web: The Need for an Unambiguous Mapping

Persistent IDentifiers (PIDs), such as DOIs, Handles and ARK identifiers, play a significant role in the identification of a wide variety of assets that are created and used in scholarly endeavours, including research papers, datasets, images, etc. Motivated by concerns about long-term persistence, among others, PIDs are minted outside the information access protocol of the day, HTTP. Yet, value-added services targeted at both humans and machines routinely assume or even require resources identified by means of HTTP URIs in order to make use of off-the-shelf components like web browsers and servers. Hence, an unambiguous bridge is required between the PID-oriented paradigm that is widespread in research communication and the HTTP-oriented web, semantic web and linked data environment. This paper describes the problem, and a possible solution towards defining and deploying such an interoperable bridge

HiberActive: Pro-Active Archiving of Web References from Scholarly Articles

Presentation at Open Repositories 2014, Helsinki, Finland, June 9-13, 2014General Track Papers and PanelsThe session was recorded and is available for watching (this presentation starts at 0:26:22)References in scholarly communication have traditionally pointed to published articles or book chapters. However, today’s scholarly communication increasingly contains links to a wide range of web resources to support the presented research. Examples for such web resources are websites, software, datasets, presentation slides, videos, scientific work- flows, ontologies, and others. Traditional published articles and book chapters are archived in special purpose infrastructure and their content is considered stable. Web resources, on the other hand, are constantly changing and archiving approaches are by far less mature. Ensuring integrity of the scholarly record, therefore, presents a significant challenge for institutional repositories as well as for other types of holdings of scientific manuscripts. The Hiberlink project [1] investigates this challenge. As one exploration of our project work we introduce HiberActive, a distributed solution that repositories can utilize to have references from scholarly articles pro-actively archived in real-time. HiberActive builds on existing technologies and protocols to lower the barrier of adoption. Its distributed character supports our understanding of a shared responsibility between repositories and external parties to improve our chances for an appropriately archived scholarly record. [1] http://www.hiberlink.org/Klein, Martin (Los Alamos National Laboratory, United States of America)Shankar, Harihar (Los Alamos National Laboratory, United States of America)Van de Sompel, Herbert (Los Alamos National Laboratory, United States of America)Wincewicz, Richard (Edina, University of Edinburgh