Eigenfactor is a non-commercial academic research project by the Bergstrom lab in the Department of Biology at the University of Washington. The goal is to map the structure of science. Together, we are developing different visualizations based on citation patterns between scientific journals.
Electronic Resources Reviews
Web of Science's "Citation Mapping" Tool
Brian D. Simboli
Science Librarian
Library and Technology Services
Lehigh University
Bethlehem, Pennsylvania
brs4@lehigh.edu
Copyright 2008, Brian D. Simboli. Used with permission.
In July 2008 Thomson Reuters added a new "citation mapping" tool to its Web of Science product. This tool, which is touted on the Web of Science (hereafter, WOS) search interface as a beta version, enables users to visualize the relationship between citing and cited references. The citation mapping tool is a welcome addition to WOS. Below I discuss how the tool works, offer some comments and suggestions about it, and conclude with some notes about future directions.
Persons interested in bibliographic visualization software may also find of interest HistCite, developed by Eugene Garfield, pioneer of cited/citing searching and analysis. For an overview of HistCite, see Herther (2007). This review will not compare the new citation mapping tool in WOS to the features of HistCite, but will reference the HistCite web page in a few places.
Unified Verb Index
University of Colorado
The Unified Verb Index is a system which merges links and web pages from four different natural language processing projects:
* VerbNet - Download!
* PropBank - Download!
* FrameNet
* OntoNotes Sense Groupings
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.