E-mail: harremoes@ieee.org Mobile: +45 27 82 41 71 Skype: peterharremoes Address: |
Research newsAt IGAIA IV and MaxEnt 2016 I presented results that strongly indicate that information theory is only possible in mathematical structures that can be represented on Jordan algebras. There are 5 basic types of Jordan algebras, and density matrices with complex entries is the most important in the sense that quantum information theory is normally represented on this type of algebra. I guess that many results from quantum information theory can be generalized to Jordan algebras. The new results can be found in arXiv:1607.02259 and some related results can be found in Proper Scoring and Sufficiency and in arXiv: 1601.07593. I finished a long paper with various bounds on tail probabilities in terms of the signed log-likelihood function arXiv: 1601.05179 . Although the inequalities are quite sharp I am sure even sharper inequalities of these types can be obtained. I think the results can be generalized to cover all exponential families with simple variance functions. Even more general inequalities may exist, but at the moment I don't know how to attack the general problem. In the following paper arXiv:1601.04255 we obtain a lower bound on the rate of convergence in the law of small numbers, that seem to be asymptotically tight. Lattice theory of causation I an working on a
larger project where I want to see to what extend
concepts related to cause and effect can be studied
using lattice theory. Last summer I presented some
derived results related to Lattices with
non-Shannon Inequalities. In January and
February I was visiting University of Hawai'i where
several lattice experts are situated and now I try to put all the results together. |
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ResearchMy research is centered
on information theory. One of my interests is how to
use ideas from information theory to derive results
in probability theory. Many of the most important
reslts in probability theory are convergence
theorems, and many of these convergence theorems can
be reformulated so that they state that the entropy
of a system increases to a maximum or that a
divergence converge to a minimum. These ideas are
also relevant in the theory of statistical tests.
Recently I have formalized a method for deriving
Jeffreys prior as the optimal prior using the
minimum description length principle. Editorial workI am associated editor of the journal IEEE Transactions on Information Theory covering probability and statistics. I am editorial board memberof the journal Entropy. I was Editor-in-Chief of Entropy 2007-2011 and editor 2011-2015. I serve as reviewer of numerous other
journals as can be seen from my newly created Publons profile.
EventsQuantum Lunch Talk at Math. Dept. Univ. Copenhagen 6/1 2016 I will give a talk entitled "Determinism and Causality. Which aspects are shared between classical physics and quantum physics?"I will be visiting University of Hawai'i Jan.-Feb. 2016. I will give a lecture series on Bregman divergences. The first will be held Thursday 21/1 in Holmes Hall. See flyer for detailed information. IGAIA IV I have been invited to give a talk at the conference Information Geometry and its Applications IV, to be held on June 1-17, 2016 at Liblice Castle, Czech Republic. The title of my talk will be announced later. MaxEnt 2016 36th International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering. 10-15 July, Gent Belgium. ISIT 2016 10-15/7 2016, Barcelona, Spain. Beyond IID 4 18-22/7 2016, Barcelona, Spain. This is a satellite conference to ISIT. WITMSE 2016 19-21/9 Helsinki. LinksI have made a BibTeX file with a lot of items related to information theory. Information Theory
Society I am senoir member og IEEE and the
Information Theory Society is a part of this organization. The page has a
lot of useful links related to
information theory. SoftwareHere are links to some of my favorite software. Dropbox Very
convenient for storing and sharing documents. ColleguesHere are links to some persons that I use to collaborate with. Andrew
Barron |