Selected
publications
This page is under
construction and contains selected publications.
Please click here
for a complete publication list.
Work
under submission
- Højsgaard,
S., Green, P. G., Friggens, N. A
cyclical state
space model for prediction of progesterone concentration in milk from
dairy cows. In
preparation
- Jørgen
Djurhuus, Goswin Heckrath, Bjarne Hansen, Preben Olsen, Ole
Højby Jacobsen and Søren
Højsgaard.
An
expert system to predict water erosion in denmark – data and
influence of model parameters. In
preparation.
- Søren
Højsgaard, Jørgen Djurhuus, and
Goswin
Heckrath. A stochastic model for prediction of water erosion. In preparation.
- Højsgaard, S., Munksgaard, L. (2009) Detecting eating
behaviour from positioning data for dairy cows. In preparation
- Jared
O'Connell,
Søren Højsgaard
(2009) Multiple Hidden Semi Markov Models -
The mhsmm Package Submitted.
manuscript
- Højsgaard, S (2009). Graphical Independence Networks
with the gRain package for R. In
preparation. manuscript
- Frede Aakmann
Tøgersen, Flemming Skjøth, Lene Munksgaard, and
Søren Højsgaard (2008) RSSI based indoor tracking
in sensor networks using Kalman filters Submitted.
- Lars
Relund Nielsen, Erik Jørgensen, and Søren
Højsgaard. (2008) Embedding a state space model into a
Markov
decision
process. Submitted.
- Lenth, R.; Højsgaard, S. (2009) Literate programming
in statistics with multiple languages. Submitted. manuscript
- Højsgaard,
S.,
Friggens, N. (2009) Quantifying Degree of Mastitis from Common Trends
in a Panel of Indicators for Mastitis in Dairy Cows. To appear in Journal
of Dairy Science
- Jared
O'Connell, Frede A. Tøgersen, Nicolas C. Friggens, Peter
Løvendahl, Søren
Højsgaard
(2009).
Combining cattle activity and progesterone measurements using hidden
semi-Markov models. To
appear in Journal of Agricultural, Biological and Environmental
Statistics.
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Journal
articles
- Bossen,D., Weisbjerg, M.R., Munksgaard,
L., Højsgaard, S. (2009)
Allocation of feed based on individual dairy cow live weight changes I:
Feed intake and live weight changes during lactation. Livestock Science Vol 126, p. 252-272.
- Sørensen, M T ; Vestergaard, E M ; Jensen, S K ;
Lauridsen, C ; Højsgaard, S (2009) Performance and diarrhoea in
piglets following weaning at seven weeks of age: Challenge with E.
coli O 149 and effect of dietary factors. Livestock Science. 2009 ;
123, 314-321.
- Højsgaard, S. and Lauritzen, S.
L.
(2008). Graphical Gaussian models with edge and vertex
symmetries. Journal
of the Royal Statistical Society,
Series B; 70(5),
p. 1005-1027
- N.
C. Friggens, M. Bjerring, C.
Ridder, S. Højsgaard and T. Larsen (2008). Improved
Detection of Reproductive Status in Dairy Cows using Milk Progesterone
Measurements. Reprod. Domestic
Anim;
Vol. 43, p. 113-121
- Højsgaard,
S. and Lauritzen, S. L.
(2007). Inference in graphical Gaussian models with edge and
vertex symmetries with the gRc package for R. Journal of
Statistical Software, 23, 6.
The gRc
package.
- Friggens
N, Chagunda M,
Bjerring M, Ridder C, Højsgaard S,
Larsen T. (2007). Estimating degree of mastitis from time-series
measurements in milk: A test of a model based on lactate dehydrogenase
measurements. Journal of Dairy Science. 2007, 90(12): 5415-5427
- Lenth,
Russell V ;
Højsgaard, Søren (2007) SASWeave:
Literate Programming Using SAS. Journal of
Statistical Software, 19(8)
Hansen, Jørgen Vinsløv ; Friggens, Nicolas;
Højsgaard, Søren. (2006) The influence of breed
and
parity on milk yield, and milk yield acceleration curves. Livestock Science.
2006; vol. 104,
s. 53-62.
- Halekoh,
U., Højsgaard, S., Yan, J. (2006).The
package geepack for generalized estimating equations. Journal of
Statistical Software. 15,
2
- Dethlefsen,
C.,
Højsgaard, S. (2005) A Common Platform for
Graphical Models in R: The gRbase Package. Journal of
Statistical Software 14,
17
- Højsgaard,
S. (2004)
Statistical Inference in Context
Specific Interaction Models for Contingency Tables. Scandinavian Journal of
Statistics. 31,1,
p.143-158
- Højsgaard,
S. (2004)
The mimR Package for Graphical Modelling
in R. Journal
of Statistical Software 11,
6.
- Højsgaard,
S.
(2003). Split models for contingency
tables. Computional Statistics
& Data Analysis. 42,
4, p. 621-645
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Conference
articles etc.
- Jónsson, R.I.; Blanke, M.; Poulsen, N.K., Munksgaard,
L. and Højsgaard, S (2009) Combination of activity and
lying/standing data for detection of oestrus in cows. In Precision
livestock Farming '09, Wageningen Academic Publishers p. 207-214.
- Lenth, R; Højsgaard, S (2009): Literate programming
with multiple languages. Presented at the DSC2009 conference, 13-14
July 2009, Copenhagen, Denmark. Download
- Højsgaard, S (2009): Where are the cows and what are
they doing. Presented at 2nd Nordic-Baltic Biometric Conference, 10-12
June 2009, Tartu, Estonia. Download
- Højsgaard, S; Lenth R (2009): Reproducible
statistical analysis with StatWeave. Poster Presented at 2nd
Nordic-Baltic Biometric Conference, 10-12 June 2009, Tartu, Estonia.
- Højsgaard
S., Green P. J., Friggens, N. (2008) A cyclical
state
space model for prediction of progesterone concentration in milk from
dairy cows. Research workshop on Functional and Longitudinal
Data
Analysis. University of Copenhagen, Faculty of Life Sciences, September
2008, http://www.dina.kvl.dk/~ib/FDA2008-RW/
- Højsgaard,
S (2008). Graphical models for sparse data:
Graphical gaussian models with vertex and edge symmetries. In
Proceedings in Computational Statistics (COMPSTAT), p. 105-116. Download
- Højsgaard, S (2008) RCOX models: Graphical Gaussian
models with edge and vertex symmetries. Presented at London
Mathematical Society Durham Symposium "Mathematical Aspects of
Graphical Models", 30. June - 10. July, 2008. http://www.maths.dur.ac.uk/events/Meetings/LMS/2008/MAGM/talks.html
- Ragnar
I. Jónsson, Trausti Björgvinsson, Mogens
Blanke,
Niels K. Poulsen, Søren Højsgaard, Lene
Munksgaard
(2008). Oestrus Detection in Dairy Cows Using Likelihood Ratio Tests.
To appear in proceedings of 17th International Federation of
Automatic Control (IFAC) congress; http://www.ifac2008.org
- Djurhuus
J, Højsgaard S, Heckrath G, Olsen P (2007). An
expert
system for predicting rill erosion in Denmark. In: Heckrath G,
Rubæk GH, Kronvang B, editors. Diffuse Phosphorus Loss. Risk
Assessment, Mitigation Options and Ecological Effects in River Basins.
The 5th International Phosphorus Workshop (IPW5). 2007, pp. 453-456.
(DJF Report, Plant Science; 130).
- Sørensen
M. T.,
Højsgaard S. (2007) Effect of field
crops on animals: Considerations with regard to design using
Chlormequat-treated wheat as an example. In: Proceedings of the 3rd
International Congress of the European Integrated Project "Quality Low
Input Food (QLIF)". University of Hohenheim. 2007, pp. 118-121.
- S.
Højsgaard
and S. L. Lauritzen.(2005)
Restricted concentration models -
graphical Gaussian models with concentration parameters
restricted to being equal. Proceedings
of the Tenth International
Workshop
on Artificial Intelligence and Statistics,
Jan 6-8, 2005, Savannah
Hotel, Barbados, pp. 152-157. R. G. Cowell and Z. Ghahramani (eds).
Society for Artificial Intelligence and Statistics, 2005.
Available electronically at
http://www.gatsby.ucl.ac.uk/aistats/
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Last modified:
11 January 2009