This map shows the geographic impact of Ulf Johansson's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ulf Johansson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ulf Johansson more than expected).
This network shows the impact of papers produced by Ulf Johansson. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ulf Johansson. The network helps show where Ulf Johansson may publish in the future.
Co-authorship network of co-authors of Ulf Johansson
This figure shows the co-authorship network connecting the top 25 collaborators of Ulf Johansson.
A scholar is included among the top collaborators of Ulf Johansson based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with Ulf Johansson. Ulf Johansson is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Johansson, Ulf, et al.. (2011). The Trade-Off between Accuracy and Interpretability for Predictive In Silico Modeling. Future Medicinal Chemistry. 3.1 indexed citations
8.
Johansson, Ulf, Rikard König, & Lars Niklasson. (2008). Evolving a Locally Optimized Instance Based Learner. Borås Academic Digital Archive (University of Borås). 124–129.5 indexed citations
9.
Johansson, Ulf, et al.. (2008). Genetic Decision Lists for Concept Description. Borås Academic Digital Archive (University of Borås). 450–456.1 indexed citations
10.
König, Rikard, Ulf Johansson, & Lars Niklasson. (2008). Using Genetic Programming to Increase Rule Quality. Borås Academic Digital Archive (University of Borås). 288–293.5 indexed citations
11.
Johansson, Ulf, Henrik Boström, & Rikard König. (2008). Extending Nearest Neighbor Classification with Spheres of Confidence. KTH Publication Database DiVA (KTH Royal Institute of Technology). 282–287.6 indexed citations
Johansson, Ulf, Tuve Löfström, Rikard König, & Lars Niklasson. (2006). Introducing GEMS * a Novel Technique for Ensemble Creation. The Florida AI Research Society. 700–705.3 indexed citations
15.
Johansson, Ulf, Tuve Löfström, Rikard König, & Lars Niklasson. (2006). Why Not Use an Oracle When You Got One. International Conference on Neural Information Processing. 10. 227–236.10 indexed citations
16.
Löfström, Tuve & Ulf Johansson. (2005). Predicting the Benefit of Rule Extraction: A Novel Component in Data Mining. 7(3).3 indexed citations
17.
Johansson, Ulf, et al.. (2004). Why Rule Extraction Matters. International Conference on Software Engineering. 47–52.5 indexed citations
18.
Johansson, Ulf, Rikard König, & Lars Niklasson. (2004). The Truth is in There : Rule Extraction from Opaque Models Using Genetic Programming. The Florida AI Research Society. 658–663.33 indexed citations
19.
Johansson, Ulf, Lars Niklasson, & Rikard König. (2004). Accuracy vs. comprehensibility in data mining models. International Conference on Information Fusion. 295–300.28 indexed citations
20.
Niklasson, Lars, Henrik Engström, & Ulf Johansson. (2001). An Adaptive 'Rock, Scissors and Paper' Player Based on a Tapped Delay Neural Network. KTH Publication Database DiVA (KTH Royal Institute of Technology). 130–136.4 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.