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High-Resolution Maps of Science | #dataviz #scientometrics

High-Resolution Maps of Science | #dataviz #scientometrics | e-Xploration | Scoop.it

'Maps of science derived from citation data visualize the relationships among scholarly publications or disciplines. They are valuable instruments for exploring the structure and evolution of scholarly activity. Much like early world charts, these maps of science provide an overall visual perspective of science as well as a reference system that stimulates further exploration. However, these maps are also significantly biased due to the nature of the citation data from which they are derived: existing citation databases overrepresent the natural sciences; substantial delays typical of journal publication yield insights in science past, not present; and connections between scientific disciplines are tracked in a manner that ignores informal cross-fertilization..'


Via Nicholas Goubert, Lauren Moss, Rui Guimarães Lima
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VOSviewer. #Dataviz | #SNA #clustering

VOSviewer. #Dataviz | #SNA #clustering | e-Xploration | Scoop.it
VOSviewer is a freely available computer program for creating, visualizing, and exploring bibliometric maps of science.
luiy's insight:

VOSviewer is a freely available computer program that can be used for the following purposes:

 

VOSviewer can be used to create maps based on network data. Maps are created using the VOS mapping technique and the VOS clustering technique.VOSviewer can be used to view and explore maps. It can show a map in various different ways, each emphasizing a different aspect of the map. It offers functionality such as zooming, scrolling, and searching, which facilitates the detailed examination of a map. 

VOSviewer is primarily intended to be used for analyzing bibliometric networks. The program can for instance be used to create maps of publications, authors, or journals based on a co-citation network or to create maps of keywords based on a co-occurrence network. Various examples of maps created using VOSviewer are available here.

 

VOSviewer has been written in the Java programming language and runs on most hardware and operating system platforms. VOSviewer can be downloaded here. The program can also be started directly by clicking the Launch button below.

 

- See more at: http://www.vosviewer.com/#!

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More Than 800,000 Scientific Papers In One Beautiful Infographic | #scientometrics #SNA

More Than 800,000 Scientific Papers In One Beautiful Infographic | #scientometrics #SNA | e-Xploration | Scoop.it

ArXiv is an online archive that stores hundreds of thousands of scientific papers in physics, mathematics, and other fields. The citations in those papers link to one another, forming a web, but you're not going to see those connections just by sifting through the archive.

So physicist Damien George and Ph.D student Rob Knegjens took it on themselves to create Paperscape, an interactive infographic that beautifully and intuitively charts the papers.

The infographic is a mass of circles. Each circle represents a paper, and the bigger a circle is, the more highly cited it is. The papers are color-coded by discipline--pink for astrophysics, yellow for math, etc.--and papers that share many of the same citations are placed closer together.


Via Lauren Moss
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Jay Ratcliff's curator insight, September 6, 2013 10:35 AM

This is cool!  It is like the map of the Internet done last year sometime.

I lucked out and found the section about SNA in the lower left hand side of the map.  Look for Network under the Quantitative Finance section, go figure.

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lapdftext - Layout-Aware Text #Extraction from Full-text PDF of Scientific Articles | #semantic #scientometrics

lapdftext - Layout-Aware Text #Extraction from Full-text PDF of Scientific Articles | #semantic #scientometrics | e-Xploration | Scoop.it
luiy's insight:

Publications

 

If you use LA-PDFText in your project, please cite us as follows:

Ramakrishnan, C., A. Patnia, E. Hovy and G. Burns (2012). "Layout-Aware Text Extraction from Full-text PDF of Scientific Articles."Source Code for Biology and Medicine 7(1): 7. [http://www.scfbm.org/content/7/1/7/abstract]

 

Introduction

 

The Portable Document Format (PDF) is the almost universally used file format for online scientific publications. It is also notoriously difficult to read and handle computationally, presenting challenges for developers of biomedical text mining or biocuration informatics systems that use the published literature as an information source. To facilitate the effective use of scientific literature in such systems we introduce Layout-Aware PDF Text Extraction (LA-PDFText).

See Overview for a list of commands that you can execute with this tool. This includes simple and more detailed text extraction from PDF files.

 

LA-PDFText has been developed by members of the Biomedical Knowledge Engineering group @ the Information Sciences Institute. It is intended for use both scientists and NLP engineers interested in getting access to text within specific sections of research articles. The system is open-source and provides a simple baseline function for extracting text from primary research articles using rules that developers can customize. This means that the system works quite well for most applications (and might occasionally make mistakes and extract the wrong text), but it is always possible to 'hack' your own rules and improve performance.

 

For questions about future development or support of the current tool, please contact Gully Burns (gully@usc.edu). For discussions concerning the work contributing to this project, please contact any of the research team: Gully Burns, Cartic

 

Ramakrishnan (rcartic@gmail.com) or Ed Hovy (hovy@isi.edu).

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Sciencescape Tutorial - Medialab Science Po I #dataviz #scientometrics

Vimeo is the home for high-quality videos and the people who love them.
luiy's insight:

We developed a new version of our tool ScienceScape this summer. We wanted students to be able to get easy insights from their Scopus results. Tommaso is now presenting how to do that!


http://www.medialab.sciences-po.fr/blog/sciencescape-tutorial-helpers-for-scientometrics/

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Paperscape: an interactive map of all the scientific papers from ArXiv | #dataviz #SNA #Scientometrics

Paperscape: an interactive map of all the scientific papers from ArXiv | #dataviz #SNA #Scientometrics | e-Xploration | Scoop.it

Paperscape is an interactive map of all the scientific papers from the ArXiv database.

luiy's insight:

Paperscape is a tool to visualise the arXiv, an open, online repository for scientific research papers. The Paperscape map currently includes all (non-withdrawn) papers from the arXiv and is updated daily.

 

Each paper in the map is represented by a circle, with the area of the circle proportional to the number of citations that paper has. In laying out the map, an N-body algorithm is run to determine positions based on references between the papers. There are two “forces” involved in the N-body calculation: each paper is repelled from all other papers using an anti-gravity inverse-distance force, and each paper is attracted to all of its references using a spring modelled by Hooke’s law. We further demand that there is no overlap of the papers.

 

The map is rendered simply as a solid circle for each paper. The colour of the circle denotes the arXiv category of the paper, and the brightness indicates age. Brightness is sometime difficult to discern, and we are working on adding a heat-map overlay to indicate clearly the areas of the map which have the most recent activity.

As you zoom in on the map labels will start to appear on individual papers. These labels are (mostly) automatically extracted by analysing word frequency in the title and abstract of the paper, and are generally indicative of the subject matter of that paper. Zooming in closer also shows the author(s) of the paper. If a paper is deemed to be a review paper, or a set of lectures, this is noted.

 

References (and citation counting) are extracted by processing the TeX/LaTeX and PDF source obtained from the arXiv. This is done automatically each morning, and the map is finished updating about 3 or 4 hours after the arXiv’s new listing is announced. Some categories (noticeably hep-th and hep-ph) have better reference extraction than others and so the map for these areas has more variation in paper size and more structure. We are working on improving the reference extraction.

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Investigación y desarrollo. Research and consulting. - Gephi Marketplace @luiy

Investigación y desarrollo. Research and consulting. - Gephi Marketplace @luiy | e-Xploration | Scoop.it
luiy's insight:

Gephi Marketplace @luiy


Design and development of services and products about knowledge analysis with Gephi.


- Collaboration analysis
- Organizations dynamics
- Learning analytics
- Knowledge management
- Social media analysis
- Roles and profiles
- Scientometrics
- Ethnographic models

 

Home page: http://viz.oycib.org/

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Scientometrics 2000 - 2013: e-Research, e-Social Science, Digital Humanities.

Scientometrics 2000 - 2013: e-Research, e-Social Science, Digital Humanities. | e-Xploration | Scoop.it
e-Research Analysis 2013

 

#ivmooc #infovis #dh @luiy @katycns

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