 |
Odd Aalen | |
|---|---|
| Born | May 6, 1947 Oslo, Norway |
| Nationality | Norwegian |
| Education | University of Oslo University of California, Berkeley |
| Occupation(s) | Statistician, professor |
| Scientific career | |
| Institutions | University of Oslo |
| Doctoral advisor | Lucien Le Cam |
Odd Olai Aalen (born 6 May 1947, in Oslo) is a Norwegian statistician and a professor at the Department of Biostatistics at the Institute of Basic Medical Sciences at the University of Oslo. [1]
Aalen completed his examen artium in 1966 at Oslo Cathedral School before studying first mathematics and physics and then statistics in which he graduated at the University of Oslo in 1972. [2]
His research work is geared towards applications in biosciences. Aalen's early work on counting processes and martingales, starting with his 1976 Ph.D. thesis at the University of California, Berkeley, has had profound influence in biostatistics. Inferences for fundamental quantities associated with cumulative hazard rates, in survival analysis and models for analysis of event histories, are typically based on the Nelson–Aalen estimator or appropriate related statistics. The Nelson–Aalen estimator is related to the Kaplan-Meier estimator and generalisations thereof.
Aalen is currently professor emeritus at the Oslo Centre for Biostatistics and Epidemiology at the Faculty of Medicine at the University of Oslo.
He is an elected member of the Norwegian Academy of Science and Letters.[ citation needed ]
Ragnar Anton Kittil Frisch was an influential Norwegian economist known for being one of the major contributors to establishing economics as a quantitative and statistically informed science in the early 20th century. He coined the term econometrics in 1926 for utilising statistical methods to describe economic systems, as well as the terms microeconomics and macroeconomics in 1933, for describing individual and aggregate economic systems, respectively. He was the first to develop a statistically informed model of business cycles in 1933. Later work on the model together with Jan Tinbergen won the two the first Nobel Memorial Prize in Economic Sciences in 1969.
The University of Oslo is a public research university located in Oslo, Norway. It is the oldest university in Norway. Originally named the Royal Frederick University, the university was established in 1811 as the de facto Norwegian continuation of Denmark-Norway's common university, the University of Copenhagen, with which it shares many traditions. It was named for King Frederick VI of Denmark and Norway, and received its current name in 1939. The university was commonly nicknamed "The Royal Frederick's" before the name change, and informally also referred to simply as Universitetet.
Trygve Magnus Haavelmo, born in Skedsmo, Norway, was an economist whose research interests centered on econometrics. He received the Nobel Memorial Prize in Economic Sciences in 1989.
Odd Hassel was a Norwegian physical chemist and Nobel Laureate.
Nils Lid Hjort is a Norwegian statistician, who has been a professor of mathematical statistics at the University of Oslo since 1991. Hjort's research themes are varied, with particularly noteworthy contributions in the fields of Bayesian probability, density estimation and nonparametric regression, model selection, confidence distributions, and change detection. He has also worked with spatial statistics, statistics of remote sensing, pattern recognition, etc.
Ole Eiler Barndorff-Nielsen was a Danish statistician who has contributed to many areas of statistical science.
Arnoldo Frigessi di Rattalma is an Italian statistician based in Norway, where he is a professor at the Department of Biostatistics with the Institute of Basic Medical Research at the University of Oslo. He has also a position at the Oslo University Hospital and is affiliated with the Norwegian Computing Centre. He led the centre Statistics for Innovation, which was created in 2007 as one of 14 designated national centres for research-based innovation, funded by the Norwegian Research Council, until 2014. Frigessi succeeded in obtaining funding for a second centre of the same type, BigInsight, which started in 2014 and will operate for 8 years, again under his leadership. Frigessi develops new methods in statistics and machine learning and stochastic models to study principles, dynamics and patterns of complex dependence. His approach is often Bayesian and computationally intensive. He has developed theory for Markov Chain Monte Carlo methods, inferential methods for pair copula constructions, methods for the analysis of multiple genomic data types, the first digital twin of a breast tumor useful for personalised treatment. His work has been central to the national response to the COVID-19 pandemics in Norway, as a key member of the modelling group at the National Intritute of Public Health of Norway.
Knut Helle was a Norwegian historian. A professor at the University of Bergen from 1973 to 2000, he specialized in the late medieval history of Norway. He has contributed to several large works.
Grethe Berit Rytter Hasle was a Norwegian planktologist. Among the first female professors of natural science at the University of Oslo, she specialized in the study of phytoplankton.
The Nelson–Aalen estimator is a non-parametric estimator of the cumulative hazard rate function in case of censored data or incomplete data. It is used in survival theory, reliability engineering and life insurance to estimate the cumulative number of expected events. An "event" can be the failure of a non-repairable component, the death of a human being, or any occurrence for which the experimental unit remains in the "failed" state from the point at which it changed on. The estimator is given by
Erling Størmer is a Norwegian mathematician, who has mostly worked with operator algebras.
Helge Holden is a Norwegian mathematician working in the field of differential equations and mathematical physics. He was Praeses of the Royal Norwegian Society of Sciences and Letters from 2014 to 2016.
Ralph Tambs Lyche was a Norwegian mathematician.
Harald Krabbe Schjelderup was a Norwegian physicist, philosopher and psychologist. He worked with all three subjects on university level, but is best remembered as Norway's first professor of psychology.
Knut Olai Knutsen Bjørlykke was a Norwegian geologist and sedimentologist.
Pranab Kumar Sen is a statistician, a professor of statistics and the Cary C. Boshamer Professor of Biostatistics at the University of North Carolina at Chapel Hill.
Erling Sverdrup was a Norwegian statistician and actuarial mathematician. He played an instrumental role in building up and modernising the fields of mathematical statistics and actuarial science in Norway, primarily at the Department of Mathematics at the University of Oslo but also via his links to Statistics Norway.
Marvin Zelen was Professor Emeritus of Biostatistics in the Department of Biostatistics at the Harvard T.H. Chan School of Public Health (HSPH), and Lemuel Shattuck Research Professor of Statistical Science. During the 1980s, Zelen chaired HSPH's Department of Biostatistics. Among colleagues in the field of statistics, he was widely known as a leader who shaped the discipline of biostatistics. He "transformed clinical trial research into a statistically sophisticated branch of medical research."
Dorota Maria Dabrowska is a Polish statistician known for applying nonparametric statistics and semiparametric models to counting processes and survival analysis. Dabrowska's estimator, from her paper "Kaplan–Meier estimate on the plane" is a widely used tool for bivariate survival under random censoring.
For the American musician, see Wayne Nelson.
| International | |
|---|---|
| National | |
| Academics | |
| Other | |
