Embedded Files
Portfolio Analysis
Add an Overlay
The current version allows you to add up to 12 overlays. Each overlay is represented by a distinct set of bibliographic records in the WoS format. Start the process by clicking on the Add button.
Technical details and several examples are provided in (C. Chen & Leydesdorff, 2014).
This function is made available for non-commercial and educational use. For commercial use, please contact me directly for further detail.
A portfolio analysis of Wakefield et al.'s retracted paper. You can find more details in our 2013 JASIST paper listed below.
Big data.
Big data with trajectories singled out by z scores of concentrations.
If you use the dual-map function in your publications, you should cite it as follows:
Chen, C., Leydesdorff, L. (2013) Patterns of connections and movements in dual-map overlays: A new method of publication portfolio analysis. Journal of the American Society for Information Science and Technology. DOI: 10.1002/asi.22968
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