Statistics

Statistics

“The best thing about being a statistician is that you get to play in everyone else's backyard” —John Tukey (Bell Labs and Princeton University)

What is statistics?

Statistics is the science of collecting, presenting and learning from data — including the effects of uncertainty. It thereby provides the navigation essential for controlling the course of scientific and societal advances (Davidian & Louis 2012).

What do statisticians do?

Statisticians apply statistical thinking and methods to a wide variety of scientific, social, and business endeavours in such areas as astronomy, biology, education, economics, engineering, genetics, marketing, medicine, psychology, public health, sports, among many.

 

Areas of research

Areas of research

Besides population dynamics this research also covers topics as

  • evolutionary biology
  • population genetics
  • ecology
  • conservation biology
  • functional genomics

An important activity is statistical modelling and analysis of data from genomics, where multiple hypothesis testing is a central research topic. Ongoing research also includes exact hypothesis testing concerning parameters of discrete distributions in the presence of nuisance parameters.

The main research topics include

  • Design of Experiments (DOE)
  • reliability analysis
  • extreme value statistics

In reliability, focus is modelling and statistical inference in connection with repairable and maintainable systems and calculation of system reliability of structural systems.

In extreme value statistics, focus is estimation of extreme responses of dynamic structures and extreme value prediction from sampled time series.

The research in Design of Experiments (DOE) is directed towards projection properties of non-regular two-level designs.

Focus is on stochastic modelling of spatial and spatio-temporal phenomena and inference of the associated model parameters. Based on indirect observations of the phenomena Bayesian inversion with prior models of the type mentioned above is performed. Various types of Gaussian random fields and Markov random fields are mostly used.

Moreover, simulation algorithms, approximations and decision analysis for complicated spatial and spatio-temporal models are being studied. The research is inspired by challenges in characterization of petroleum reservoirs.

Research is directed towards speeding up algorithms for handling complex statistical problems. Special focus is given to Gaussian Markov random fields and applications of the approach INLA which makes it possible to avoid MCMC for doing Bayesian inference for latent Gaussian models.

Topics studied include characteristic functions and choice of smoothing parameters in kernel density estimation and methods for Monte Carlo computation of conditional distributions given sufficient statistics.

More generally, the focus is on the theoretical and mathematical foundations of Bayesian, fiducial, and frequentist inference motivated by applications in artificial intelligence (e.g. deep neural networks) and statistical inference and prediction (e.g. improper priors, nuisance parameters, parametric and non-parametric models).

Contact

Contact

Jo EidsvikProfessor Jo Eidsvik
Head of the statistics group

 

Strategic Research Areas

Strategic Research Areas

BigData
A joint initiative with the Department of Computer Science. This strategic research area is hosted by the Faculty of Information Technology and Electrical Engineering.

Seminars

Publications

Publications

Current project (statistics)

Current projects

Projects

Maritime Autonomous Sampling and Control is an inter-disciplinary project to build on the science of statistical sampling for oceanographic applications with autonomous robots. The project aims to address parts of the problems related to a pressing need for designing, implementing and testing algorithms for efficient sampling of the upper water-column, and to have the broader impact of commingling methods in statistics, oceanography and automated control including Artificial Intelligence (AI) for adaptive sampling.

The project is financed by the Norwegian Research Council through the IKT PLUSS programme.

Geophysics and Applied Mathematics in Exploration and Safe production will use and develop current methods of rock physics and geophysical modeling. These will be embedded in a mathematical statistics framework that facilitates consistent prediction and uncertainty quantification from the available data and geological understanding.

Primary objectives

  • New understanding and mapping of geologic uplift offshore Norway
  • New ways of understanding and interpreting continuous geophysical monitoring data using controlled and natural wave-field sources
  • Develop robust and accurate methods for 3D elastic imaging of the subsurface

The project is supported by the Norwegian Research Council through the PETROMAKS2 framework, and by petroleum companies.

Knowledge Based Non-Stationary Modeling is supported by the Norwegian Research Council and is based on collaboration between researchers in statistics, quantitative genetics and hydrology. From a statisticians point of view, the goal is to develop statistical methods and knowledge for non-stationary processes.

The aim of the project is to contribute toward solving two important challenges, get better understanding about non-stationarity, and what data that are needed to detect it.

  • Quantitative genetics challenge: Predict breeding values and identifying quantitative trait loci from SNP-panel data and pedigree information.
  • Hydrology challenge: The problem of ungauged basins, i.e. challenge of estimating streamflow variables for locations where no streamflow observations are available.

Penalized Complexity-priors: A new tool to define default priors and robustify Bayesian models is a Norwegian Research Council supported project, and its main objective is to develop a new framework for specifying a class of default priors at model level. This will not only facilitate the ways priors are determined in practice but also robustify Bayesian analyses. The results will be made available in the R-INLA package.

Partners

Partners

Telenor-NTNU AI-Lab

The Telenor-NTNU AI-Lab was established in 2016 and is a joint lab for research in Artificial Intelligence, Machine Learning (ML), and Big Data Analytics. The lab conducts fundamental ML research, including theory and method development, as well as application-oriented research at a high international level. Telenor-NTNU AI-Lab involves several research groups and departments doing ML research at NTNU.

The statistics group collaborates with the AI-Lab in the field of Statistical Machine Learning.

Centre for Biodiversity Dynamics

The Centre for Biodiversity Dynamics (CBD) is an interdisciplinary centre at NTNU for research into changes in time and space of biological diversity at different organismal levels. Main research areas:

  • population dynamics
  • evolutionary biology
  • community dynamics

Statistics at NTNU

Statistics at NTNU

The Statistics group at the Department of Mathematical Sciences consists of

  • 17 permanent faculty members
  • 4 postdoctors
  • 22 PhD students

NTNU is the leading university in Norway in terms of number of Master Degrees awarded.