Filters








10 Hits in 1.3 sec

pH-RL: A personalization architecture to bring reinforcement learning to health practice [article]

Ali el Hassouni, Mark Hoogendoorn, Marketa Ciharova, Annet Kleiboer, Khadicha Amarti, Vesa Muhonen, Heleen Riper, A. E. Eiben
2021 arXiv   pre-print
While reinforcement learning (RL) has proven to be the approach of choice for tackling many complex problems, it remains challenging to develop and deploy RL agents in real-life scenarios successfully. This paper presents pH-RL (personalization in e-Health with RL) a general RL architecture for personalization to bring RL to health practice. pH-RL allows for various levels of personalization in health applications and allows for online and batch learning. Furthermore, we provide a
more » ... e implementation framework that can be integrated with various healthcare applications. We describe a step-by-step guideline for the successful deployment of RL policies in a mobile application. We implemented our open-source RL architecture and integrated it with the MoodBuster mobile application for mental health to provide messages to increase daily adherence to the online therapeutic modules. We then performed a comprehensive study with human participants over a sustained period. Our experimental results show that the developed policies learn to select appropriate actions consistently using only a few days' worth of data. Furthermore, we empirically demonstrate the stability of the learned policies during the study.
arXiv:2103.15908v2 fatcat:h5de275u5jexdmfbexjnvu2rba

A clustering-based reinforcement learning approach for tailored personalization of e-Health interventions [article]

Ali el Hassouni, Mark Hoogendoorn, Martijn van Otterlo, A. E. Eiben, Vesa Muhonen, Eduardo Barbaro
2020 arXiv   pre-print
Eiben), vmuhonen@mobiquityinc.com (Vesa Muhonen), eduardo.barbaro@ibm.com (Eduardo Barbaro) Figure 2 : 2 A multi-policy reinforcement learning system for personalized decision-making in e-Health.  ... 
arXiv:1804.03592v3 fatcat:h4dzgyrjungznf3zmir5d5onii

Correlated primordial perturbations in light of CMB and large scale structure data

Hannu Kurki-Suonio, Vesa Muhonen, Jussi Väliviita
2005 Physical Review D  
We use cosmic microwave background (CMB) and large-scale structure data to constrain cosmological models where the primordial perturbations have both an adiabatic and a cold dark matter (CDM) isocurvature component. We allow for a possible correlation between the adiabatic and isocurvature modes, and for different spectral indices for the power in each mode and for their correlation. We do a likelihood analysis with 11 independent parameters. We discuss the effect of choosing the pivot scale
more » ... the definition of amplitude parameters. The upper limit for the isocurvature fraction is 18 scale k = 0.01 Mpc^-1. For smaller pivot wavenumbers the limit stays about the same. For larger pivot wavenumbers, very large values of the isocurvature spectral index are favored, which makes the analysis problematic, but larger isocurvature fractions seem to be allowed. For large isocurvature spectral indices n_iso > 2 a positive correlation between the adiabatic and isocurvature mode is favored, and for n_iso < 2 a negative correlation is favored. The upper limit to the nonadiabatic contribution to the CMB temperature variance is 7.5 Of the standard cosmological parameters, determination of the CDM density ω_c and the sound horizon angle θ (or the Hubble constant H_0) are affected most by a possible presence of a correlated isocurvature contribution. The baryon density ω_b nearly retains its "adiabatic value".
doi:10.1103/physrevd.71.063005 fatcat:45fyjoukcres7b2cnawyegjb7q

Correlated Adiabatic and Isocurvature Cosmic Microwave Background Fluctuations in the Wake of the Results from the Wilkinson Microwave Anisotropy Probe

Jussi Väliviita, Vesa Muhonen
2003 Physical Review Letters  
In general correlated models, in addition to the usual adiabatic component with a spectral index n_ad1 there is another adiabatic component with a spectral index n_ad2 generated by entropy perturbation during inflation. We extend the analysis of a correlated mixture of adiabatic and isocurvature CMB fluctuations of the WMAP group, who set the two adiabatic spectral indices equal. Allowing n_ad1 and n_ad2 to vary independently we find that the WMAP data favor models where the two adiabatic
more » ... ents have opposite spectral tilts. Using the WMAP data only, the 2-sigma upper bound for the isocurvature fraction f_iso of the initial power spectrum at k_0=0.05 Mpc^-1 increases somewhat, e.g., from 0.76 of n_ad2 = n_ad1 models to 0.84 with a prior n_iso < 1.84 for the isocurvature spectral index. We also comment on a possible degeneration between the correlation component and the optical depth tau. Moreover, the measured low quadrupole in the TT angular power could be achieved by a strong negative correlation, but then one needs a large tau to fit the TE spectrum.
doi:10.1103/physrevlett.91.131302 pmid:14525297 fatcat:bncztlssgfcjnd4rk4q3uwc2xu

Hints of isocurvature perturbations in the cosmic microwave background?

Reijo Keskitalo, Hannu Kurki-Suonio, Vesa Muhonen, Jussi Väliviita
2007 Journal of Cosmology and Astroparticle Physics  
The improved data on the cosmic microwave background (CMB) anisotropy allow a better determination of the adiabaticity of the primordial perturbation. Interestingly, we find that recent CMB data seem to favor a contribution of a primordial isocurvature mode where the entropy perturbation is positively correlated with the primordial curvature perturbation and has a large spectral index (niso ~ 3). With 4 additional parameters we obtain a better fit to the CMB data by Delta chi^2 = 9.7 compared
more » ... an adiabatic model. For this best-fit model the nonadiabatic contribution to the CMB temperature variance is 4%. According to a Markov Chain Monte Carlo analysis the nonadiabatic contribution is positive at more than 95% C.L. The exact C.L. depends somewhat on the choice of priors, and we discuss the effect of different priors as well as additional cosmological data.
doi:10.1088/1475-7516/2007/09/008 fatcat:izquid3mwfhjdlaaywz7svbs3a

Sanattomien sopimusten puolustajat: eduskunnan perustuslakivaliokunnan suhde mediajulkisuuteen

Timo Harjuniemi, Maija Dahlberg, Anu Kantola
2022 Media & viestintä  
Koivisto 2019; Teittinen, Kervinen ja Muhonen 2020; Sajari 2021) .  ...  Vesa ja Kananen 2014). Perustuslain asema suomalaisessa järjestelmässä on vahvistunut viime vuosikymmeninä.  ... 
doi:10.23983/mv.120274 fatcat:sbc7ymxdtrh4re7gkcnyto5xgy

Abstracts of the 31st Annual Conference on Cardiovascular Disease Epidemiology. Orlando, Florida, March 14-16, 1991

1991 Circulation  
Vanhanen, Vesa Naukkarinen, Seppo Sarna, Tatu A. Miettinen. Second Department of Medicine, University of Helsinki,SF-00290 Helsinki, Finland.  ...  Muhonen, Trudy L. Bums, Ronald M. Lauer. University of Iowa, Iowa City, IA. During childhood, a parental history of coronary heart disease (CHD) is rare.  ... 
doi:10.1161/01.cir.83.2.715 fatcat:npob34qewzdovhg76lpqn6pld4

Päätoimittaja / Managing Editor Tämän numeron vastaava päätoimittaja / Managing editor of this issue Toimitussihteeri / Editorial Assistant Ulkoasu ja taitto / Design and Layout Painopaikka ja-aika / Printed by

Julkaisijat Publishers, Heidi Westerlund, Sibelius-Akatemia, Sibelius Academy, Lauri Väkevä, Sibelius-Akatemia, Sibelius Academy, Laura Pohjola, Sibelius-Akatemia, Sibelius Academy, Lauri Toivio, Sibelius Academy (+2 others)
2006 The Finnish Journal of Music Education (FJME) Vsk   unpublished
Vesa Kurkela esitti "kerettiläisen" ajatuksen siitä, että jotkut musiikinlajit -vaikkapa eräiden alakulttuurien kohdalla -säilyvät parempina ja tuoreempina ilman koulutusta.  ...  Klassisen kaanonin haastaminen; käsitteiden uudelleenmäärittelyä Vesa Kurkela toi paneelin alustuksessaan ilmi sen, että vielä 1970-luvulla määritellyt taidemusiikin kriteerit eivät enää nykyaikana päde  ...  Vesa Kurkela Taidemusiikkihegemoninen käsite usiikki on epäilemättä luokitelluin taiteen alue.  ... 
fatcat:ojnv5qa7crbb5aawey5o2mz42i

Conceptualising Benefits of User-Centred Design for Digital Library Services

Heli Kautonen, Marko Nieminen
2018 Liber Quarterly: The Journal of European Research Libraries  
Iloranta ja Pajunen-Muhonen, 2012, s. 53) ja se antaa kokonaiskuvan julkisin varoin toteutettavan hankinnan ohjausrakenteista.  ...  Rajoja ylittävä yhteistyö luo paineita kehittää uusia käytäntöjä ja uudenlaista johtamista (Toivanen, Janhonen, Järvensivu ja Vesa, 2014).  ... 
doi:10.18352/lq.10231 fatcat:oz23shh66rcydnpayptearigqi

Päätoimittaja / Managing Editor Tämän numeron vastaavat toimittajat / Managing editors of this issue Toimitussihteeri / Editorial Assistant Ulkoasu ja taitto / Design and Layout Painopaikka ja-aika / Printed by Metamorfoosi (kuva: Lauri Toivio) Musiikkikasvatus The Finnish Journal of Music Education (FJME) Contents / Sisällys Articles / Artikkelit

Julkaisijat Publishers, Suomen Tutkimusseura, Heidi Westerlund, Sibelius-Akatemia, Sibelius Academy, Randall Everett, Allsup, Nathaniel Olson, Marja Heimonen, Sibelius-Akatemia, Sibelius Academy, Lauri Toivio (+5 others)
2010 The Finnish Journal of Music Education (FJME) Vsk   unpublished
He has Reply to Petter Dyndahl's book review of De-Canonizing Music History (Vesa Kurkela & Lauri Väkevä, eds., Cambridge Scholars Publishing, 2010) in Musiikkikasvatus 13/1 (2010).  ...  Konferenssin avajaistapahtumassa "Educating the Creative Mind"-projektin johtaja, filosofian tohtori Lily Chen-Hafteck esitteli nuoria esiintyjiä jotka häikäisivät taidoillaan ja kertoivat taiteiden Sari Muhonen  ... 
fatcat:grcofldu5zgx5bb6ezswqsismu