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Modern Astrostatistics

Vak 2019-2020

Please note that this course description is preliminary. The final course description will be released in June 2019.

Admission Requirements
Prior attendence of introductory statistics courses is helpful but not a mandatory prerequisite. Basic programming skills, or the will to develop these, are expected.

Description
Randomness, uncertainties and deviations from the norm surround us in everyday's life. A major asset of any scientist is to see beyond the complexity of noise, scatter and biases, and to find an underlying --often surprisingly simple-- explanation for the noisy data. This course is specialized to astronomical data analysis, but the topics discussed will also foster an improved understanding of Google, Facebook and other free social media services.

Topics that will be covered include:

  • Descriptive statistics: Finding meaning in a huge data set.
  • Inference statistics: Constraining a physical model by data.
  • Filtering, e.g. for gravitational wave detections and source detection.
  • Random fields: Sky surveys and structure formation in cosmology.
  • Sampling methods: Making huge data analyses numerically feasible.
  • Bayesian Hierarchical Models: How to disentangle a seemingly complex analysis.
  • Prior Theory and Information Measures: How not to hide prejudices in an analyses.
  • Missing data and elusive physics: What to do if your sought signal hides in the dark figures?
  • Machine learning: Finding patterns which escape humans.

Course objectives
Accepting randomness and discovering signals in noisy data. Recognizing patterns and information. Becoming secure in the presence of uncertainties, and learning to develop own creative data analysis techniques.

Soft skills
In this course, students will be trained in the following behaviour-oriented skills:

  • Problem solving (recognizing and analyzing problems, solution-oriented thinking)
  • Critical thinking (asking questions, check assumptions)
  • Analytical skills (analytical thinking, abstraction, evidence)
  • Creative thinking (resourcefulness, curiosity, thinking out of the box)

Timetable
See Astronomy master schedules

Mode of instruction
Lectures on Monday, with bi-weekly numerical tutorial sessions on Thursday. One exercise sheet containing analytical and numerical problems will be handed out on Mondays. These are to be tackled proactively by the students. The Thursday tutorials will cover the analytical solutions, provide programming support, and help interpret the results. The programs thus developed can be used in the exam.

Assessment method

Upon completion of the analytical part, students can proceed to the numerical part, where they are allowed to use their own programs in order to now analyze a testdata set.

Blackboard
To be announced

Reading list
To be announced

Contact information:
Lecturer: Dr. Elena Sellentin
Assistants: to be announced