| 1966-68 | Promotionsstipendium der Fritz Thyssen-Stiftung, Köln; |
| 1970 | Auszeichnung mit Borchers-Plakette der RWTH Aachen (für herausragende Promotionsleistung); |
| 1975-76 | Habilitationsstipendium der Deutschen Forschungsgemeinschaft (DFG); |
| 1976 | Einladung der Deutschen Akademie der Naturforscher Leopoldina, Halle (DDR); |
| 1977 | Einladungen der Polnischen Akademie der Wissenschaften (PAN), Warschau und Krakau (Polen); |
| seit 1982 | Associate der Behavioral and Brain Sciences (BBS), Princeton, NJ (USA); |
| 1990-91 | Fellow des German Marshall Fund (GMF) of the United States; |
| 1991 | Visiting Senior Researcher des International Computer Science Institute (ICSI), University of California, Berkeley, CA (USA); |
| ● | Visiting Scholar am Center for the Study of Language and Information (CSLI), Stanford University, Stanford, CA (USA); |
| 1995 | Dank und Anerkennung zum 25-jährigen Dienstjubiläum durch den Ministerpräsidenten (Kurt Beck) des Landes Rheinland-Pfalz; |
| 2007 | Festschrift "Aspects of Automatic Text Analysis" in Honour of Prof. Burghard B. Rieger, edited by A. Mehler / R. Köhler [Studies in Fuzziness and Soft Computing, vol. 209], Berlin/Heidelberg (Springer Verlag). |
| ● | Honorary co-Chair ICMLDA-07: Intern. Conference on Machine Learning and Data Analysis, at the World Congress on Engineering and Computer Science WCECS-07, San Francisco, CA (USA). |
| 2008 | Honorary co-Chair ICMLDA-08: Intern. Conference on Machine Learning and Data Analysis, at the International Conference on Computer Science and Applications ICCSA-08, San Francisco, CA (USA). |
2009 |
Honorary co-Chair ICMLDA-09: Intern. Conference on Machine Learning and Data Analysis, at the International Conference on Computer Science and Applications ICSSA-09, San Francisco, CA (USA). |
| 2010 | Honorary co-Chair ICMLDA-10: Intern. Conference on Machine Learning and Data Analysis, at the International Conference on Computer Science and Applications ICSSA-10, San Francisco, CA (USA). |
| 2011 | Honorary co-Chair ICMLDA-11: Intern. Conference on Machine Learning and Data Analysis, at the 2011 World Congress on Engineering & Computer Science WCECS-11 organized by the International Association of Engineers (IAENG), San Francisco, CA (USA). |
| 2012 | Honorary co-Chair ICMLDA-12: Intern. Conference on Machine Learning and Data Analysis, at the 2012 World Congress on Engineering & Computer Science WCECS-12 organized by the International Association of Engineers (IAENG), San Francisco, CA (USA). |
| 2013 | Ehrenmitglied (Honorary Member) der Gesellschaft für Sprachtechnologie und Computerlinguistik e.V. (GSCL). |
| ● | Honorary co-Chair ICMLDA-13: Intern. Conference on Machine Learning and Data Analysis, at the 2013 World Congress on Engineering & Computer Science WCECS-13 organized by the International Association of Engineers (IAENG), San Francisco, CA (USA). |
| 2014 | Honorary co-Chair ICMLDA-14: Intern. Conference on Machine Learning and Data Analysis, at the 20142 World Congress on Engineering & Computer Science WCECS-14 organized by the International Association of Engineers (IAENG), San Francisco, CA (USA). |
| 2015 | Honorary co-Chair ICMLDA-15: Intern. Conference on Machine Learning and Data Analysis, at the 2015 World Congress on Engineering & Computer Science WCECS-15 organized by the International Association of Engineers (IAENG), San Francisco, CA (USA). |
| 2016 | Honorary co-Chair ICMLDA-16: Intern. Conference on Machine Learning and Data Analysis, at the 2016 World Congress on Engineering & Computer Science WCECS-16 organized by the International Association of Engineers (IAENG), San Francisco, CA (USA). |
| 2017 | Honorary co-Chair ICMLDA-17: Intern. Conference on Machine Learning and Data Analysis, at the 2017 World Congress on Engineering & Computer Science WCECS-14 organized by the International Association of Engineers (IAENG), San Francisco, CA (USA). |
| 2018 | Honorary co-Chair ICMLDA-18: Intern. Conference on Machine Learning and Data Analysis, at the 2018 World Congress on Engineering & Computer Science WCECS-18 organized by the International Association of Engineers (IAENG), San Francisco, CA (USA). |