Publications 2019

Engebretsen S, Engø-Monsen K, Frigessi A, Freiesleben de Blasio B (2019)
A theoretical single-parameter model for urbanisation to study infectious disease spread and interventions
PLoS Comput Biol, 15 (3), e1006879
DOI 10.1371/journal.pcbi.1006879, PubMed 30845153

Publications 2018

Engebretsen S, Frigessi A, Engø-Monsen K, Furberg AS, Stubhaug A, de Blasio BF, Nielsen CS (2018)
The peer effect on pain tolerance
Scand J Pain, 18 (3), 467-477
DOI 10.1515/sjpain-2018-0060, PubMed 29794275

Erango M, Frigessi A, Rosseland LA (2018)
A three minutes supine position test reveals higher risk of spinal anesthesia induced hypotension during cesarean delivery. An observational study
F1000Res, 7, 1028
DOI 10.12688/f1000research.15142.1, PubMed 30135733

LeBlanc M, Zuber V, Thompson WK, Andreassen OA, Schizophrenia and Bipolar Disorder Working Groups of the Psychiatric Genomics Consortium, Frigessi A, Andreassen BK (2018)
A correction for sample overlap in genome-wide association studies in a polygenic pleiotropy-informed framework
BMC Genomics, 19 (1), 494
DOI 10.1186/s12864-018-4859-7, PubMed 29940862

Rohrbeck C, Costain DA, Frigessi A (2018)
Bayesian spatial monotonic multiple regression
Biometrika, 105 (3), 691-707

Rohrbeck C, Eastoe EF, Frigessi A, Tawn JA (2018)
EXTREME VALUE MODELLING OF WATER-RELATED INSURANCE CLAIMS
Ann. Appl. Stat., 12 (1), 246-282

Sorensen O, Hellton KH, Frigessi A, Thoresen M (2018)
Covariate Selection in High-Dimensional Generalized Linear Models With Measurement Error
J. Comput. Graph. Stat., 27 (4), 739-749

Vitelli V, Sorensen O, Crispino M, Frigessi A, Arjas E (2018)
Probabilistic preference learning with the Mallows rank model
J. Mach. Learn. Res., 18, 1-49

Publications 2017

Asfaw D, Vitelli V, Sorensen O, Arjas E, Frigessi A (2017)
Time-varying rankings with the Bayesian Mallows model
Stat, 6 (1), 14-30

Aure MR, Vitelli V, Jernström S, Kumar S, Krohn M, Due EU, Haukaas TH, Leivonen SK, Vollan HK, Lüders T, Rødland E, Vaske CJ, Zhao W, Møller EK, Nord S, Giskeødegård GF, Bathen TF, Caldas C, Tramm T, Alsner J, Overgaard J, Geisler J, Bukholm IR, Naume B, Schlichting E et al. (2017)
Integrative clustering reveals a novel split in the luminal A subtype of breast cancer with impact on outcome
Breast Cancer Res, 19 (1), 44
DOI 10.1186/s13058-017-0812-y, PubMed 28356166

Belay DB, Kifle YG, Goshu AT, Gran JM, Yewhalaw D, Duchateau L, Frigessi A (2017)
Joint Bayesian modeling of time to malaria and mosquito abundance in Ethiopia
BMC Infect Dis, 17 (1), 415
DOI 10.1186/s12879-017-2496-4, PubMed 28606100

Fleischer T, Tekpli X, Mathelier A, Wang S, Nebdal D, Dhakal HP, Sahlberg KK, Schlichting E, Oslo Breast Cancer Research Consortium (OSBREAC), Børresen-Dale AL, Borgen E, Naume B, Eskeland R, Frigessi A, Tost J, Hurtado A, Kristensen VN (2017)
DNA methylation at enhancers identifies distinct breast cancer lineages
Nat Commun, 8 (1), 1379
DOI 10.1038/s41467-017-00510-x, PubMed 29123100

Linder MD, Frigessi A, Piaserico S, Keilman N (2017)
Simulating the life course of psoriasis patients: the interplay between therapy intervention and marital status
J Eur Acad Dermatol Venereol, 32 (1), 62-67
DOI 10.1111/jdv.14567, PubMed 28850745

Publications 2016

Haff IH, Aas K, Frigessi A, Lacal V (2016)
Structure learning in Bayesian Networks using regular vines
Comput. Stat. Data Anal., 101, 186-208

Solvang HK, Frigessi A, Kaveh F, Riis ML, Lüders T, Bukholm IR, Kristensen VN, Andreassen BK (2016)
Gene expression analysis supports tumor threshold over 2.0 cm for T-category breast cancer
EURASIP J Bioinform Syst Biol, 2016 (1), 6
DOI 10.1186/s13637-015-0034-5, PubMed 26900390

Tharmaratnam K, Sperrin M, Jaki T, Reppe S, Frigessi A (2016)
Tilting the lasso by knowledge-based post-processing
BMC Bioinformatics, 17 (1), 344
DOI 10.1186/s12859-016-1210-7, PubMed 27590269

Publications 2015

Frigessi A, Holden L, Teigland A (2015)
(sfi)(2) Statistics for Innovation - The experience of the Oslo centre in industrial statistics
Appl. Stoch. Models. Bus. Ind., 31 (1), 82-93

Frigessi A, Holden L, Teigland A (2015)
Rejoinder to '(sfi)(2) Statistics for Innovation The experience of the Oslo centre in industrial statistics'
Appl. Stoch. Models. Bus. Ind., 31 (1), 96

Haff IH, Frigessi A, Maraun D (2015)
How well do regional climate models simulate the spatial dependence of precipitation? An application of pair-copula constructions
J. Geophys. Res.-Atmos., 120 (7), 2624-2646

LeBlanc M, Zuber V, Andreassen BK, Witoelar A, Zeng L, Bettella F, Wang Y, McEvoy LK, Thompson WK, Schork AJ, Reppe S, Barrett-Connor E, Ligthart S, Dehghan A, Gautvik KM, Nelson CP, Schunkert H, Samani NJ, CARDIoGRAM Consortium, Ridker PM, Chasman DI, Aukrust P, Djurovic S, Frigessi A, Desikan RS et al. (2015)
Identifying Novel Gene Variants in Coronary Artery Disease and Shared Genes With Several Cardiovascular Risk Factors
Circ Res, 118 (1), 83-94
DOI 10.1161/CIRCRESAHA.115.306629, PubMed 26487741

Sorensen O, Frigessi A, Thoresen M (2015)
MEASUREMENT ERROR IN LASSO: IMPACT AND LIKELIHOOD BIAS CORRECTION
Stat. Sin., 25 (2), 809-829

Publications 2014

Fairbairn CE, Sayette MA, Aalen OO, Frigessi A (2014)
Alcohol and Emotional Contagion: An Examination of the Spreading of Smiles in Male and Female Drinking Groups
Clin Psychol Sci, 3 (5), 686-701
DOI 10.1177/2167702614548892, PubMed 26504673

Fleischer T, Frigessi A, Johnson KC, Edvardsen H, Touleimat N, Klajic J, Riis ML, Haakensen VD, Wärnberg F, Naume B, Helland A, Børresen-Dale AL, Tost J, Christensen BC, Kristensen VN (2014)
Genome-wide DNA methylation profiles in progression to in situ and invasive carcinoma of the breast with impact on gene transcription and prognosis
Genome Biol, 15 (8), 435
DOI 10.1186/PREACCEPT-2333349012841587, PubMed 25146004

Kristensen VN, Lingjærde OC, Russnes HG, Vollan HK, Frigessi A, Børresen-Dale AL (2014)
Principles and methods of integrative genomic analyses in cancer
Nat Rev Cancer, 14 (5), 299-313
DOI 10.1038/nrc3721, PubMed 24759209

Tramm T, Mohammed H, Myhre S, Kyndi M, Alsner J, Børresen-Dale AL, Sørlie T, Frigessi A, Overgaard J (2014)
Development and validation of a gene profile predicting benefit of postmastectomy radiotherapy in patients with high-risk breast cancer: a study of gene expression in the DBCG82bc cohort
Clin Cancer Res, 20 (20), 5272-80
DOI 10.1158/1078-0432.CCR-14-0458, PubMed 25149560

Publications 2013

Loland A, Huseby RB, Hjort NL, Frigessi A (2013)
Statistical Corrections of Invalid Correlation Matrices
Scand. J. Stat., 40 (4), 807-824

Sandve GK, Gundersen S, Johansen M, Glad IK, Gunathasan K, Holden L, Holden M, Liestøl K, Nygård S, Nygaard V, Paulsen J, Rydbeck H, Trengereid K, Clancy T, Drabløs F, Ferkingstad E, Kalas M, Lien T, Rye MB, Frigessi A, Hovig E (2013)
The Genomic HyperBrowser: an analysis web server for genome-scale data
Nucleic Acids Res, 41 (Web Server issue), W133-41
DOI 10.1093/nar/gkt342, PubMed 23632163

Scheel I, Ferkingstad E, Frigessi A, Haug O, Hinnerichsen M, Meze-Hausken E (2013)
A Bayesian hierarchical model with spatial variable selection: the effect of weather on insurance claims
J R Stat Soc Ser C Appl Stat, 62 (1), 85-100
DOI 10.1111/j.1467-9876.2012.01039.x, PubMed 23396890

Publications 2012

Aldrin M, Raastad R, Tvete IF, Berild D, Frigessi A, Leegaard T, Monnet DL, Walberg M, Müller F (2012)
Antibiotic resistance in hospitals: a ward-specific random effect model in a low antibiotic consumption environment
Stat Med, 32 (8), 1407-18
DOI 10.1002/sim.5636, PubMed 23027651

Brown AA, Jensen J, Nikolova YS, Djurovic S, Agartz I, Server A, Ferrell RE, Manuck SB, Mattingsdal M, Melle I, Hariri AR, Frigessi A, Andreassen OA (2012)
Genetic variants affecting the neural processing of human facial expressions: evidence using a genome-wide functional imaging approach
Transl Psychiatry, 2, e143
DOI 10.1038/tp.2012.67, PubMed 22828495

Joshi H, Nord SH, Frigessi A, Børresen-Dale AL, Kristensen VN (2012)
Overrepresentation of transcription factor families in the genesets underlying breast cancer subtypes
BMC Genomics, 13, 199
DOI 10.1186/1471-2164-13-199, PubMed 22616941

Villani A, Frigessi A, Liljeros F, Nordvik MK, de Blasio BF (2012)
A characterization of internet dating network structures among nordic men who have sex with men
PLoS One, 7 (7), e39717
DOI 10.1371/journal.pone.0039717, PubMed 22808052

Publications 2011

Ambrosi A, Glad IK, Pellin D, Cattoglio C, Mavilio F, Di Serio C, Frigessi A (2011)
Estimated comparative integration hotspots identify different behaviors of retroviral gene transfer vectors
PLoS Comput Biol, 7 (12), e1002292
DOI 10.1371/journal.pcbi.1002292, PubMed 22144885

Frigessi A, Loland A, Pievatolo A, Ruggeri F (2011)
Statistical rehabilitation of improper correlation matrices
Quant. Financ., 11 (7), 1081-1090

Gundersen S, Kalaš M, Abul O, Frigessi A, Hovig E, Sandve GK (2011)
Identifying elemental genomic track types and representing them uniformly
BMC Bioinformatics, 12, 494
DOI 10.1186/1471-2105-12-494, PubMed 22208806

Jemtland R, Holden M, Reppe S, Olstad OK, Reinholt FP, Gautvik VT, Refvem H, Frigessi A, Houston B, Gautvik KM (2011)
Molecular disease map of bone characterizing the postmenopausal osteoporosis phenotype
J Bone Miner Res, 26 (8), 1793-801
DOI 10.1002/jbmr.396, PubMed 21452281

LeBlanc M, Kulle B, Sundet K, Agartz I, Melle I, Djurovic S, Frigessi A, Andreassen OA (2011)
Genome-wide study identifies PTPRO and WDR72 and FOXQ1-SUMO1P1 interaction associated with neurocognitive function
J Psychiatr Res, 46 (2), 271-8
DOI 10.1016/j.jpsychires.2011.11.001, PubMed 22126837

Orskaug E, Scheel I, Frigessi A, Guttorp P, Haugen JE, Tveito OE, Haug O (2011)
Evaluation of a dynamic downscaling of precipitation over the Norwegian mainland
Tellus Ser. A-Dyn. Meteorol. Oceanol., 63 (4), 746-756

Sandve GK, Gundersen S, Rydbeck H, Glad IK, Holden L, Holden M, Liestøl K, Clancy T, Drabløs F, Ferkingstad E, Johansen M, Nygaard V, Tøstesen E, Frigessi A, Hovig E (2011)
The differential disease regulome
BMC Genomics, 12, 353
DOI 10.1186/1471-2164-12-353, PubMed 21736759

Solvang HK, Lingjærde OC, Frigessi A, Børresen-Dale AL, Kristensen VN (2011)
Linear and non-linear dependencies between copy number aberrations and mRNA expression reveal distinct molecular pathways in breast cancer
BMC Bioinformatics, 12, 197
DOI 10.1186/1471-2105-12-197, PubMed 21609452

Zhao X, Rødland EA, Sørlie T, Naume B, Langerød A, Frigessi A, Kristensen VN, Børresen-Dale AL, Lingjærde OC (2011)
Combining gene signatures improves prediction of breast cancer survival
PLoS One, 6 (3), e17845
DOI 10.1371/journal.pone.0017845, PubMed 21423775

Publications 2010

Haff IH, Aas K, Frigessi A (2010)
On the simplified pair-copula construction - Simply useful or too simplistic?
J. Multivar. Anal., 101 (5), 1296-1310

Myhre S, Mohammed H, Tramm T, Alsner J, Finak G, Park M, Overgaard J, Børresen-Dale AL, Frigessi A, Sørlie T (2010)
In silico ascription of gene expression differences to tumor and stromal cells in a model to study impact on breast cancer outcome
PLoS One, 5 (11), e14002
DOI 10.1371/journal.pone.0014002, PubMed 21124964

Sandve GK, Gundersen S, Rydbeck H, Glad IK, Holden L, Holden M, Liestøl K, Clancy T, Ferkingstad E, Johansen M, Nygaard V, Tøstesen E, Frigessi A, Hovig E (2010)
The Genomic HyperBrowser: inferential genomics at the sequence level
Genome Biol, 11 (12), R121
DOI 10.1186/gb-2010-11-12-r121, PubMed 21182759

Publications 2009

Aldrin M, Storvik B, Frigessi A, Viljugrein H, Jansen PA (2009)
A stochastic model for the assessment of the transmission pathways of heart and skeleton muscle inflammation, pancreas disease and infectious salmon anaemia in marine fish farms in Norway
Prev Vet Med, 93 (1), 51-61
DOI 10.1016/j.prevetmed.2009.09.010, PubMed 19811843

Lawyer G, Nesvag R, Varnas K, Frigessi A, Agartz I (2009)
Investigating possible subtypes of schizophrenia patients and controls based on brain cortical thickness (vol 164, pg 254, 2008)
Psychiatry Res. Neuroimaging, 171 (3), 258

Reppe S, Refvem H, Gautvik VT, Olstad OK, Høvring PI, Reinholt FP, Holden M, Frigessi A, Jemtland R, Gautvik KM (2009)
Eight genes are highly associated with BMD variation in postmenopausal Caucasian women
Bone, 46 (3), 604-12
DOI 10.1016/j.bone.2009.11.007, PubMed 19922823

Aas K, Czado C, Frigessi A, Bakken H (2009)
Pair-copula constructions of multiple dependence
Insur. Math. Econ., 44 (2), 182-198

Publications 2008

Ferkingstad E, Frigessi A, Lyng H (2008)
Indirect genomic effects on survival from gene expression data
Genome Biol, 9 (3), R58
DOI 10.1186/gb-2008-9-3-r58, PubMed 18358079

Ferkingstad E, Frigessi A, Rue H, Thorleifsson G, Kong A (2008)
UNSUPERVISED EMPIRICAL BAYESIAN MULTIPLE TESTING WITH EXTERNAL COVARIATES
Ann. Appl. Stat., 2 (2), 714-735

Husberg C, Nygård S, Finsen AV, Damås JK, Frigessi A, Oie E, Waehre A, Gullestad L, Aukrust P, Yndestad A, Christensen G (2008)
Cytokine expression profiling of the myocardium reveals a role for CX3CL1 (fractalkine) in heart failure
J Mol Cell Cardiol, 45 (2), 261-9
DOI 10.1016/j.yjmcc.2008.05.009, PubMed 18585734

Kulle B, Frigessi A, Edvardsen H, Kristensen V, Wojnowski L (2008)
Accounting for haplotype phase uncertainty in linkage disequilibrium estimation (vol 32, pg 168, 2008)
Genet. Epidemiol., 32 (6), 586-587

Kulle B, Frigessi A, Edvardsen H, Kristensen V, Wojnowski L (2008)
Accounting for haplotype phase uncertainty in linkage disequilibrium estimation
Genet Epidemiol, 32 (2), 168-78
DOI 10.1002/gepi.20273, PubMed 17968987

Lawyer G, Nesvåg R, Varnäs K, Frigessi A, Agartz I (2008)
Investigating possible subtypes of schizophrenia patients and controls based on brain cortical thickness
Psychiatry Res, 164 (3), 254-64
DOI 10.1016/j.pscychresns.2007.12.017, PubMed 19022629

Nygaard V, Liu F, Holden M, Kuo WP, Trimarchi J, Ohno-Machado L, Cepko CL, Frigessi A, Glad IK, Wiel MA, Hovig E, Lyng H (2008)
Validation of oligoarrays for quantitative exploration of the transcriptome
BMC Genomics, 9, 258
DOI 10.1186/1471-2164-9-258, PubMed 18513391

Publications 2007

Bøvelstad HM, Nygård S, Størvold HL, Aldrin M, Borgan Ø, Frigessi A, Lingjaerde OC (2007)
Predicting survival from microarray data--a comparative study
Bioinformatics, 23 (16), 2080-7
DOI 10.1093/bioinformatics/btm305, PubMed 17553857

Kausrud KL, Viljugrein H, Frigessi A, Begon M, Davis S, Leirs H, Dubyanskiy V, Stenseth NC (2007)
Climatically driven synchrony of gerbil populations allows large-scale plague outbreaks
Proc Biol Sci, 274 (1621), 1963-9
DOI 10.1098/rspb.2007.0568, PubMed 17550884

Nesvåg R, Frigessi A, Jönsson EG, Agartz I (2007)
Effects of alcohol consumption and antipsychotic medication on brain morphology in schizophrenia
Schizophr Res, 90 (1-3), 52-61
DOI 10.1016/j.schres.2006.11.008, PubMed 17218084

Nesvåg R, Lawyer G, Varnäs K, Fjell AM, Walhovd KB, Frigessi A, Jönsson EG, Agartz I (2007)
Regional thinning of the cerebral cortex in schizophrenia: effects of diagnosis, age and antipsychotic medication
Schizophr Res, 98 (1-3), 16-28
DOI 10.1016/j.schres.2007.09.015, PubMed 17933495

Scheel I, Aldrin M, Frigessi A, Jansen PA (2007)
A stochastic model for infectious salmon anemia (ISA) in Atlantic salmon farming
J R Soc Interface, 4 (15), 699-706
DOI 10.1098/rsif.2007.0217, PubMed 17301014

Aalen OO, Frigessi A (2007)
What can statistics contribute to a causal understanding?
Scand. J. Stat., 34 (1), 155-168

Publications 2006

Agartz I, Sedvall GC, Terenius L, Kulle B, Frigessi A, Hall H, Jönsson EG (2006)
BDNF gene variants and brain morphology in schizophrenia
Am J Med Genet B Neuropsychiatr Genet, 141B (5), 513-23
DOI 10.1002/ajmg.b.30338, PubMed 16741916

Jönsson EG, Edman-Ahlbom B, Sillén A, Gunnar A, Kulle B, Frigessi A, Vares M, Ekholm B, Wode-Helgodt B, Schumacher J, Cichon S, Agartz I, Sedvall GC, Hall H, Terenius L (2006)
Brain-derived neurotrophic factor gene (BDNF) variants and schizophrenia: an association study
Prog Neuropsychopharmacol Biol Psychiatry, 30 (5), 924-33
DOI 10.1016/j.pnpbp.2006.02.008, PubMed 16581172

Perminow G, Frigessi A, Rydning A, Nakstad B, Vatn MH (2006)
Incidence and clinical presentation of IBD in children: comparison between prospective and retrospective data in a selected Norwegian population
Scand J Gastroenterol, 41 (12), 1433-9
DOI 10.1080/00365520600789891, PubMed 17101574

Publications 2005

Frigessi A, Holden M, Marshall C, Viljugrein H, Stenseth NC, Holden L, Ageyev V, Klassovskiy NL (2005)
Bayesian population dynamics of interacting species: great gerbils and fleas in Kazakhstan
Biometrics, 61 (1), 230-8
DOI 10.1111/j.0006-341X.2005.030536.x, PubMed 15737098

Frigessi A, van de Wiel MA, Holden M, Svendsrud DH, Glad IK, Lyng H (2005)
Genome-wide estimation of transcript concentrations from spotted cDNA microarray data
Nucleic Acids Res, 33 (17), e143
DOI 10.1093/nar/gni141, PubMed 16204447

Kristensen VN, Sørlie T, Geisler J, Yoshimura N, Linegjaerde OC, Glad I, Frigessi A, Harada N, Lønning PE, Børresen-Dale AL (2005)
Effects of anastrozole on the intratumoral gene expression in locally advanced breast cancer
J Steroid Biochem Mol Biol, 95 (1-5), 105-11
DOI 10.1016/j.jsbmb.2005.04.028, PubMed 16023338

Scheel I, Aldrin M, Glad IK, Sørum R, Lyng H, Frigessi A (2005)
The influence of missing value imputation on detection of differentially expressed genes from microarray data
Bioinformatics, 21 (23), 4272-9
DOI 10.1093/bioinformatics/bti708, PubMed 16216830

Publications 2004

Cekaite L, Haug O, Myklebost O, Aldrin M, Østenstad B, Holden M, Frigessi A, Hovig E, Sioud M (2004)
Analysis of the humoral immune response to immunoselected phage-displayed peptides by a microarray-based method
Proteomics, 4 (9), 2572-82
DOI 10.1002/pmic.200300768, PubMed 15352232

Frigessi A, Engel J (2004)
Editorial: a special ENBIS issue of SMIJ
Stat. Model., 4 (4), 245-247

Heggland K, Frigessi A (2004)
Estimating functions in indirect inference
J. R. Stat. Soc. Ser. B-Stat. Methodol., 66, 447-462

Saebø S, Frigessi A (2004)
A genetic and spatial Bayesian analysis of mastitis resistance
Genet Sel Evol, 36 (5), 527-42
DOI 10.1051/gse:2004015, PubMed 15339631

Publications 2002

Frigessi A, Hjort NL (2002)
Statistical models and methods for discontinuous phenomena
J. Nonparametr. Stat., 14 (1-2), 1-5

Hisdal H, Tallaksen LM, Frigessi A (2002)
Handling non-extreme events in extreme value modelling of streamflow droughts
IAHS-AISH P (274), 281-288

Storvik G, Frigessi A, Hirst D (2002)
Stationary space-time Gaussian fields and their time autoregressive representation
Stat. Model., 2 (2), 139-161

Publications 2000

Davino F, Frigessi A, Green PJ (2000)
Penalized pseudolikelihood inference in spatial interaction models with covariates
Scand. J. Stat., 27 (3), 445-458

Frigessi A, Gasemyr J, Rue H (2000)
Antithetic coupling of two Gibbs sampler chains
Ann. Stat., 28 (4), 1128-1149

Perminow G, Rydning A, Jacobsen CD, Frigessi A (2000)
[Gastrointestinal endoscopy in children]
Tidsskr Nor Laegeforen, 120 (29), 3503-6
PubMed 11188374

Skare O, Benth FE, Frigessi A (2000)
Smoothed Langevin proposals in Metropolis-Hastings algorithms
Stat. Probab. Lett., 49 (4), 345-354

Publications 1997

Frigessi A, Rue H (1997)
Bayesian image classification with Baddeley's delta loss
J. Comput. Graph. Stat., 6 (1), 55-73

Publications 1994

Frigessi A, Lánský P, Mariotto AB (1994)
A stochastic model for neuronal bursting
Biosystems, 33 (1), 1-16
PubMed 7803696

Publications 1989

Frigessi A, den Hollander F (1989)
A stochastic model for the membrane potential of a stimulated neuron
J Math Biol, 27 (6), 681-92
PubMed 2607222