This map shows the geographic impact of Otto Opitz'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 Otto Opitz with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Otto Opitz more than expected).
This network shows the impact of papers produced by Otto Opitz. 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 Otto Opitz. The network helps show where Otto Opitz may publish in the future.
Co-authorship network of co-authors of Otto Opitz
This figure shows the co-authorship network connecting the top 25 collaborators of Otto Opitz.
A scholar is included among the top collaborators of Otto Opitz 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 Otto Opitz. Otto Opitz is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
18 of 18 papers shown
1.
Opitz, Otto & Robert Klein. (2011). Mathematik. Oldenbourg Wissenschaftsverlag eBooks.
Opitz, Otto & Maurizio Vichi. (1999). Classification and data analysis: theory and application : proceedings of the Biannual Meeting of the Classification Group fo Società Italiana di Statistica (SIS), Pescara, July 3-4, 1997. Dialnet (Universidad de la Rioja).5 indexed citations
5.
Vichi, Maurizio & Otto Opitz. (1999). Classification and Data Analysis. CERN Document Server (European Organization for Nuclear Research).19 indexed citations
6.
Klar, Rüdiger, et al.. (1997). Classification and knowledge organization : proceedings of the 20th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Freiburg, March 6-8, 1996. Springer eBooks.1 indexed citations
7.
Klar, Rüdiger & Otto Opitz. (1997). Classification and Knowledge Organization. CERN Document Server (European Organization for Nuclear Research).34 indexed citations
Opitz, Otto. (1978). Numerische Taxonomie in der Marktforschung. OPUS (Augsburg University).4 indexed citations
17.
Opitz, Otto. (1970). Zum technischen Optimierungsproblem des Unternehmers. Zeitschrift für schweizerische Statistik und Volkswirtschaft/Schweizerische Zeitschrift für Volkswirtschaft und Statistik/Swiss journal of economics and statistics. 106. 369–382.2 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.