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Tag Archives: semanticweb

Google Search Engine Adds Support for RDFa, Or Do They?

Via a post and an interview on the O’Reilly Radar blog, Google announced limited support for parsing RDFa statements and microformat properties in web page HTML coding and using those statements to enhance the relevance of search results as so-called “rich snippets”. In looking at the example review markup outlined in the O’Reilly post, though, I was struck by some unusual and unexpected markup. Specifically, that the namespace was this http://rdf.data-vocabulary.org/ thing that I had never seen before, and the “rating” property didn’t have any corresponding range that would make that numeric value useful in a computational sense.

This is a preview of Google Search Engine Adds Support for RDFa, Or Do They?. Read the full post (392 words, 1:34 minutes estimated reading time)
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2009 05 12 Comments (1)

PHP Script for hCalendar to iCalendar Conversion

I try to do the “right thing” in postings on DLTJ. In the context of this discussion “right” is an attempt to be progressive: including hCalendar microformat markup for postings that include mention of events. The latest example of this was yesterday’s posting of the Learning, Libraries and Technology Conference. Embedded in the first paragraph is markup that another application reading the DLTJ feed can use to understand that the posting is talking about an event. (The Technorati Events” service is one example.) The key parts of the HTML are bolded below:

This is a preview of PHP Script for hCalendar to iCalendar Conversion. Read the full post (459 words, 1 image, 1:50 minutes estimated reading time)
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2008 12 10 Comments (0)

Specifications for Object Reuse and Exchange (ORE) published

ORE Logo The first production version of the Object Reuse and Exchange from the Open Archives Initiative was published today. In the words of the release announcement, ORE provides “the foundation for applications and services that can visualize, preserve, transfer, summarize, and improve access to the aggregations that people use in their daily Web interaction: including multiple page Web documents, multiple format documents in institutional repositories, scholarly data sets, and online photo and music collections.”

This is a preview of Specifications for Object Reuse and Exchange (ORE) published. Read the full post (136 words, 1 image, 33 seconds estimated reading time)
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2008 10 17 Comments (0)

“Object Reuse and Exchange” Beta Specifications Now Available

Carl Lagoze of Cornell University and Herbert Van de Sompel of Los Alamos National Laboratory announced the release of the beta form of the ORE specifications yesterday. Here is the full text of their announcement:

This is a preview of “Object Reuse and Exchange” Beta Specifications Now Available. Read the full post (313 words, 1:15 minutes estimated reading time)
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2008 06 03 Comments (0)

Would the Real “Dublin Core” Please Stand Up?

I’ve been following the discussion by Stu Weibel on his blog about the relationship between Resource Description Framework (RDF) and Dublin Core Abstract Model (DCAM), and I think I’m as confused as ever. It comes as a two part posting with comments by Andy Powell Pete Johnston (apologies, Pete), Mikael Nilsson, Jonathan Rochkind, and Ed Summers. Jonathan’s and Ed’s comments describe the same knowledge black hole that I’ve been facing as well; in Ed’s words: “The vocabulary I get–the DCAM is a tougher nut for me to crack.”

This is a preview of Would the Real “Dublin Core” Please Stand Up?. Read the full post (1216 words, 4:52 minutes estimated reading time)
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2008 02 18 Comments (9)

Draft Specifications of OAI Object Reuse and Exchange Now Available

ORE logoLast night, Herbert Van de Sompel announced the availability of the draft specifications and user guide for Object Reuse and Exchange (ORE). This effort, under the auspices of the Open Archives Initiative (OAI), seeks to define a standard for the description and exchange of aggregations of web resources.

This is a preview of Draft Specifications of OAI Object Reuse and Exchange Now Available. Read the full post (554 words, 3 images, 2:13 minutes estimated reading time)
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2007 12 12 Comments (0)

OAI-ORE Thoughts on Compound Documents

The Technical Committee and Liaison Group of the OAI Object Reuse and Exchange effort met last week in New York City to hammer out face-to-face some of the last remaining issues before work could begin on a draft specifications document. In preparation for that meeting, we worked on a white paper that is officially called “Compound Information Objects: The OAI-ORE Perspective” — but it might more accurately be called “Thoughts on Compound Documents”. The outline of the white paper looks like this:

  1. Introduction and Motivation
  2. An OAI-ORE Interoperability Layer for Compound Objects
  3. Exposing Logical Boundaries in the Web Graph
This is a preview of OAI-ORE Thoughts on Compound Documents. Read the full post (319 words, 1:17 minutes estimated reading time)
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2007 06 04 Comments (2)

Presentation Summary: “Cross-Repository Semantic Interoperability: the MIT SIMILE Project”

Richard Rodgers presented this talk based on the work of he and MacKenzie Smith in the Digital Library Research Group at MIT. The original abstract of the presentation was:

Many questions are raised as previously unreachable digital content is found in and among new repositories–is each repository an island or a separately searchable resource? SIMILE (Semantic Interoperability of Metadata and Information in Unlike Environments) has developed an extensive ‘tool chain’ for gathering and manipulating data assets. Richard Rodgers and MacKenzie Smith, MIT, will demonstrate how tools developed by the SIMILE project can be used as powerful instruments for the federation, discovery, exploration, and curation of metadata.

This is a preview of Presentation Summary: “Cross-Repository Semantic Interoperability: the MIT SIMILE Project”. Read the full post (519 words, 2:05 minutes estimated reading time)
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2007 01 29 Comments (3)

Presentation Summary: “MPTStore: Implementing a fast, scalable, and stable RDBMS-backed triplestore for Fedora and the NSDL”

Chris Wilper gave this presentation on behalf of the work that he and Aaron Birkland did to improve the performance of the Fedora Resource Index.

Version 2.0 of the Fedora digital object repository software added a feature called the Resource Index (RI). Based on Resource Description Framework (RDF) triples, the RI provided quick access to relationships between objects as well as to the descriptive elements of the object itself. After about two years of use using the Kowari software, the RI has pointed to a number of challenges for “triplestores”: scalability (few triplestores are designed for greater than 100 million triples); performance; and stability (frequent “rebuilds”).

This is a preview of Presentation Summary: “MPTStore: Implementing a fast, scalable, and stable RDBMS-backed triplestore for Fedora and the NSDL”. Read the full post (594 words, 2:23 minutes estimated reading time)
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2007 01 29 Comments (5)
From the Disruptive Library Technology Jester (http://dltj.org/), printed on Saturday the 20th of March 2010 at 10:40:32 AM EDT (-0400). The URL to this page is http://dltj.org/tag/semanticweb/

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