Named the "Best Online Reference Service" by the CODiE Awards, HighBeam is a premiere online library where you can find research, facts, and articles. We collect millions of articles from newspapers like The Washington Post and The Boston Globe, magazines like The Economist and Newsweek, and journals like JOPERD and Journal of Research in Childhood Education. We deliver all of this in a single research Web site.
HighBeam also provides an in-depth online library of reference works. Research online dictionaries, including Webster's New World Dictionary and The Oxford American College Dictionary as well as encyclopedias from Britannica and Columbia.
New articles are added to HighBeam daily. Plus we have an extensive article archive that includes newspapers, journals, and magazine back issues dating back more than 20 years!
SemLink is a project whose aim is to link together different lexical resources via a set of mappings. These mappings will make it possible to combine the different information provided by these different lexical resources for tasks such as inferencing. We also plan to use the mappings to aid in semi-automatic extension of each resources coverage, to increase the overall overlap in coverage. Currently, we are creating mappings between the following resources:
* PropBank: A corpus of one million words of English text, annotated with argument role labels for verbs; and a lexicon defining those argument roles on a per-verb basis.
* VerbNet: A lexicon that groups verbs based on their semantic/syntactic linking behavior.
* FrameNet: A lexicon based on frame semantics.
* WordNet: A lexicon that describes semantic relationships (such as synonymy and hyperonymy) between individual words.
The content of all four of these resources can be browsed on-line using the Unified Verb Index. A presentation giving an introduction to SemLink, and two of the resources it combines (PropBank and VerbNet), was given at the SIGSEM/ISO workshop held jointly with the IWCS-7 conference.
We are an information science research group developing software and methodologies to exploit Internet-based data sources for social sciences research, in addition to scientometrics, link analysis, cybermetrics and webometrics.
The Economics of the Internet, Information Goods,
Intellectual Property and Related Issues
Compiled by Hal R. Varian
Tools For Viewing Files
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Accounting & Measuring Traffic
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Announcements
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Background and Reference
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Electronic Commerce
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Electronic Publishing
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Government Resources
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Intellectual Property
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International
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Intranets
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Miscellaneous Resources
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Network Economics
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Policy and Law
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Pricing
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Security, Privacy and Encryption
What Topic Maps Do
When XML is introduced into an organization it is usually used for one of two purposes: either to structure the organization's documents or to make that organization's applications talk to other applications. These are both useful ways of using XML, but they will not help anyone find the information they are looking for. What changes with the introduction of XML is that the document processes become more controllable and can be automated to a greater degree than before, while applications can now communicate internally and externally. But the big picture, something that collects the key concepts in the organization's information and ties it all together, is nowhere to be found.
[Diagram]
?. published on the web by University of Pittsburgh, School of Information Sciences, (2003)Report on the NSF Workshop on Research Directions for Digital Libraries, June 15-17, 2003, Chatham, MA.