Refactoring HUBzero for Linked Data

Jun 18, 2012Download as PPTX, PDF0 likes338 views

This the presentation file from the JCDL'12 which talks about HUBzero and linked data. We refactored HUBzero and exposed the metadata information in a linked data style. One salient contribution of our work is that we implemented OAI-ORE in HUBzero and exposed the aggregation relationships in linked data. To show how user agents and human users can benefit from our work, we design and implement 3 tools, OAI-PMH data provider, RDF crawler and graph browser. The first two tools show how user agents can leverage our refactoring process to make use of the metadata and the last tool can serve as a debugging tool for human users.

Refactoring
HUBzero for
Linked Data

Michael Witt
Yongyang Yu
Purdue University
JCDL’12, Washington DC

Outline
HUBzero
Linked Data
Data Modeling
Software &Tools
Conclusion

What is HUBzero?
• Web-based virtual research environment
• Publish and reuse resources (software,
videos, datasets, etc.)
• LAMP stack (Linux, Apache, MySQL,
PHP)
• Joomla! framework

HUBzero
• Platform for scientific collaboration
• Create and upload resources by types
• Courses, seminars, tools, downloads,
series, workshops, publications, and
teaching materials
• Tag, rank, discuss, etc.

HUBzero Features
• Interactive simulation tools – zoom in on a
graph, rotate a molecule, etc.
• Online presentations – deliver online
presentation in flash format
• Tool development areas – source code
management and version control

HUBzero Reference
• http://hubzero.org
• M.McLennan and R. Kennell, HUBzero: a
platform for dissemination and
collaboration in computational science and
engineering

Linked Data
• URIs (names for various things)
• HTTP URIs
• Publish linked data in RDF format on the
Web
• Links to other URIs

Data Modeling
 Linked Data
 OAI-ORE
 Dublin Core
 Creative Commons

Object Reuse and Exchange (OAI-
ORE)
• Aggregation
• Aggregated Resources (Nested Aggregations)
• Resource Maps

Dublin Core Mapping to HUBzero
Dublin Core HUBzero table
dc:title jos_resources.title
dc:creator jos_resources.created_by
dc:subject jos_tags.raw_tag
dc:date jos_resources.created
dc:identifier jos_resources.id
dc:description jos_resources.introtext
dc:type jos_resources.type
dc:publisher (statically assigned)
dc:rights jos_resources.params

Example: Modeling HUBzero with OAI-ORE

RM

<http://hub#agg> <ore:aggregates>
<http://hub/downloads#agg>

Hub

downloads RM

Slimy salamander

Slimy.m4v

RM
…

Implementation

• Resource component
• Exposing metadata from MySQL RDB
• Serialized in RDFa+XHTML

Aggregation

Resource Map

ore:aggregates

Software & Tools We Have Developed
• Implementation of OAI-ORE for HUBzero
• OAI-PMH Data Provider
• RDF Crawler
• Graph Browser

OAI-PMH Data Provider
• Implemented as a stand-alone component in
Joomla
• Serialized as RDF/XML
• Each resource type  OAI-PMH set
• OAI-ORE Resource Maps 
ListMetadataFormats
• ore:aggregates  ListRecords

RDF Crawler
• A demonstration of utilizing linked data from the
Web
• Starting from the top level of the hub
• Parsing XHTML and dereferencing URIs
• RDF triples to N-Triple file
• N-Triple to Jena TDB triple store
• Basis of the graph browser

Graph Browser
string literals
shared boundary
of a larger graph

HTTP URIs

Summary
• Successfully extended and refactored HUBzero for
Linked Data
• Exposed Hub resources with OAI-ORE, Dublin
Core, Creative Commons, etc.
• Built software and tools to implement and utilize
Linked Data from HUBzero

Future work
• Incorporate richer and more specific vocabularies
e.g. Library of Congress Subject Headings (LCSH)
• Enable users to create and publish their own
collections (Aggregations)
• Enable semantic search

Acknowledgements

• National Leadership Grant(LG-05-10-0117-10) from
Institute of Museum and Libraries Services

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Toradex brings robust Linux support to SMARC (Smart Mobility Architecture), ensuring high performance and long-term reliability for embedded applications. Here’s how: • Optimized Torizon OS & Yocto Support – Toradex provides Torizon OS, a Debian-based easy-to-use platform, and Yocto BSPs for customized Linux images on SMARC modules. • Seamless Integration with i.MX 8M Plus and i.MX 95 – Toradex SMARC solutions leverage NXP’s i.MX 8 M Plus and i.MX 95 SoCs, delivering power efficiency and AI-ready performance. • Secure and Reliable – With Secure Boot, over-the-air (OTA) updates, and LTS kernel support, Toradex ensures industrial-grade security and longevity. • Containerized Workflows for AI & IoT – Support for Docker, ROS, and real-time Linux enables scalable AI, ML, and IoT applications. • Strong Ecosystem & Developer Support – Toradex offers comprehensive documentation, developer tools, and dedicated support, accelerating time-to-market. With Toradex’s Linux support for SMARC, developers get a scalable, secure, and high-performance solution for industrial, medical, and AI-driven applications. Do you have a specific project or application in mind where you're considering SMARC? We can help with Free Compatibility Check and help you with quick time-to-market For more information: https://www.toradex.com/computer-on-modules/smarc-arm-family

How Can I use the AI Hype in my Business Context?Daniel Lehner

𝙄𝙨 𝘼𝙄 𝙟𝙪𝙨𝙩 𝙝𝙮𝙥𝙚? 𝙊𝙧 𝙞𝙨 𝙞𝙩 𝙩𝙝𝙚 𝙜𝙖𝙢𝙚 𝙘𝙝𝙖𝙣𝙜𝙚𝙧 𝙮𝙤𝙪𝙧 𝙗𝙪𝙨𝙞𝙣𝙚𝙨𝙨 𝙣𝙚𝙚𝙙𝙨? Everyone’s talking about AI but is anyone really using it to create real value? Most companies want to leverage AI. Few know 𝗵𝗼𝘄. ✅ What exactly should you ask to find real AI opportunities? ✅ Which AI techniques actually fit your business? ✅ Is your data even ready for AI? If you’re not sure, you’re not alone. This is a condensed version of the slides I presented at a Linkedin webinar for Tecnovy on 28.04.2025.

AI EngineHost Review: Revolutionary USA Datacenter-Based Hosting with NVIDIA ...SOFTTECHHUB

I started my online journey with several hosting services before stumbling upon Ai EngineHost. At first, the idea of paying one fee and getting lifetime access seemed too good to pass up. The platform is built on reliable US-based servers, ensuring your projects run at high speeds and remain safe. Let me take you step by step through its benefits and features as I explain why this hosting solution is a perfect fit for digital entrepreneurs.

AI Changes Everything – Talk at Cardiff Metropolitan University, 29th April 2...Alan Dix

Talk at the final event of Data Fusion Dynamics: A Collaborative UK-Saudi Initiative in Cybersecurity and Artificial Intelligence funded by the British Council UK-Saudi Challenge Fund 2024, Cardiff Metropolitan University, 29th April 2025 https://alandix.com/academic/talks/CMet2025-AI-Changes-Everything/ Is AI just another technology, or does it fundamentally change the way we live and think? Every technology has a direct impact with micro-ethical consequences, some good, some bad. However more profound are the ways in which some technologies reshape the very fabric of society with macro-ethical impacts. The invention of the stirrup revolutionised mounted combat, but as a side effect gave rise to the feudal system, which still shapes politics today. The internal combustion engine offers personal freedom and creates pollution, but has also transformed the nature of urban planning and international trade. When we look at AI the micro-ethical issues, such as bias, are most obvious, but the macro-ethical challenges may be greater. At a micro-ethical level AI has the potential to deepen social, ethnic and gender bias, issues I have warned about since the early 1990s! It is also being used increasingly on the battlefield. However, it also offers amazing opportunities in health and educations, as the recent Nobel prizes for the developers of AlphaFold illustrate. More radically, the need to encode ethics acts as a mirror to surface essential ethical problems and conflicts. At the macro-ethical level, by the early 2000s digital technology had already begun to undermine sovereignty (e.g. gambling), market economics (through network effects and emergent monopolies), and the very meaning of money. Modern AI is the child of big data, big computation and ultimately big business, intensifying the inherent tendency of digital technology to concentrate power. AI is already unravelling the fundamentals of the social, political and economic world around us, but this is a world that needs radical reimagining to overcome the global environmental and human challenges that confront us. Our challenge is whether to let the threads fall as they may, or to use them to weave a better future.

Into The Box Conference Keynote Day 1 (ITB2025)Ortus Solutions, Corp

What is Model Context Protocol(MCP) - The new technology for communication bw...Vishnu Singh Chundawat

The MCP (Model Context Protocol) is a framework designed to manage context and interaction within complex systems. This SlideShare presentation will provide a detailed overview of the MCP Model, its applications, and how it plays a crucial role in improving communication and decision-making in distributed systems. We will explore the key concepts behind the protocol, including the importance of context, data management, and how this model enhances system adaptability and responsiveness. Ideal for software developers, system architects, and IT professionals, this presentation will offer valuable insights into how the MCP Model can streamline workflows, improve efficiency, and create more intuitive systems for a wide range of use cases.

Generative Artificial Intelligence (GenAI) in BusinessDr. Tathagat Varma

Build Your Own Copilot & Agents For DevsBrian McKeiver

Transcript: #StandardsGoals for 2025: Standards & certification roundup - Tec...BookNet Canada

Book industry standards are evolving rapidly. In the first part of this session, we’ll share an overview of key developments from 2024 and the early months of 2025. Then, BookNet’s resident standards expert, Tom Richardson, and CEO, Lauren Stewart, have a forward-looking conversation about what’s next. Link to recording, presentation slides, and accompanying resource: https://bnctechforum.ca/sessions/standardsgoals-for-2025-standards-certification-roundup/ Presented by BookNet Canada on May 6, 2025 with support from the Department of Canadian Heritage.

Increasing Retail Store Efficiency How can Planograms Save Time and Money.pptxAnoop Ashok

TrsLabs - Fintech Product & Business ConsultingTrs Labs

Hybrid Growth Mandate Model with TrsLabs Strategic Investments, Inorganic Growth, Business Model Pivoting are critical activities that business don't do/change everyday. In cases like this, it may benefit your business to choose a temporary external consultant. An unbiased plan driven by clearcut deliverables, market dynamics and without the influence of your internal office equations empower business leaders to make right choices. Getting things done within a budget within a timeframe is key to Growing Business - No matter whether you are a start-up or a big company Talk to us & Unlock the competitive advantage

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