Learning to Personalize in Appearance-Based Gaze Tracking

Personal variations severely limit the performance of appearance-based gaze tracking. Adapting to these variations using standard neural network model adaptation methods is difficult. The problems range from overfitting, due to small amounts of training data, to underfitting, due to restrictive model architectures. We tackle these problems by introducing the SPatial Adaptive GaZe Estimator (SPAZE). By modeling personal variations as a low-dimensional latent parameter space, SPAZE provides just enough adaptability to capture the range of personal variations without being prone to overfitting. Calibrating SPAZE for a new person reduces to solving a small optimization problem. SPAZE achieves an error of 2.70 degrees with 9 calibration samples on MPIIGaze, improving on the state-of-the-art by 14 %. We contribute to gaze tracking research by empirically showing that personal variations are well-modeled as a 3-dimensional latent parameter space for each eye. We show that this low-dimensionality is expected by examining model-based approaches to gaze tracking. We also show that accurate head pose-free gaze tracking is possible

Exploatering och hållbara avtal

Då en exploatör vill bygga på egen mark tecknas ofta ett exploateringsavtal i samband med genomförandet av en detaljplan. Sådana avtal har tecknats under en längre tid men sedan första januari 2015 finns termen definierad i PBL. I förarbetena till lagstiftningen diskuteras problem såsom bristande transparens och ett ojämnt avtalsförhållande mellan parterna. I vårt arbete har vi undersökt huruvida lagändringen har fått något genomslag i praktiken, både i avtalen och i verksammas sätt att arbeta. Vi har också undersökt huruvida det i avtalen finns osäkerheter, otydligheter och risker. Arbetet görs utifrån en rättsociologisk metod, dvs. fokus har legat på att undersöka exploateringsavtalens praktiska tillämpning genom att i arbetet analysera 54 exploateringsavtal från kommuner i södra Sverige. Vi har också genomfört intervjuer med fem exploatörer och två kommuner. För att kunna genomföra korrekta analyser av exploateringsavtalen och få en god kvalitet på intervjuerna studerades förarbeten och litteratur på området. I vårt arbete kommer vi fram till att exploateringsavtalen fungerar väl men att de problem som diskuteras ovan ibland ändå återfinns. I våra intervjuer menar verksamma parter att samarbetet mellan parterna fungerar väl men att det finns aspekter som kan behöva förbättras. Att kommunen har en större makt i avtalsförhållandet är ingen revolutionerande upptäckt i och med att vi i Sverige har ett kommunalt planmonopol. Vi har i vårt arbete emellertid analyserat avtal där vi tycker att kommunen har överutnyttjat sin maktposition. Kommunala övertramp får sällan påföljder då exploatörerna vill hålla sig på god fot med kommunen. Tvister om exploateringsavtalens innehåll går sällan till domstol. Den mycket magra rättspraxisen på området gör att parterna kan ha svårt att hävda sin rätt i en diskussion. Bristen på rättspraxis kan kopplas till det som nämns ovan om det ojämna avtalsförhållandet men också till tids- och kostnadsaspekter då tvister är dyra och riskerar därmed att dra ut på tiden. Arbetet har visat på att de nya lagreglerna inte har fått särskilt stort genomslag. Ur exploateringsavtalen är det svårt att utläsa skillnader före och efter laginförandet. Även intervjuobjekten menar att deras sätt att arbeta med exploateringsavtal inte förändrats sedan laginförandet. Vår sammanfattade mening är att exploateringsavtalen har problemområden som kan komma att realiseras i enstaka fall. Det kan tänkas att lagändringen inte ännu fått fullt genomslag i praktiken och att detta är något som sker efter hand som verksamma bekantar sig med lagarna. På detta sätt kan vissa av våra påpekade problemområden försvinna. Vi menar också att andra problemområden kan försvinna med hjälp av relativt små förändringar i tanke- och arbetssätt. Avtalsfriheten är i exploateringsförhållanden väsentlig. Förändringar måste därför göras utan att inskränka denna frihet för att på så sätt få till stånd hållbara avtal.When a private land-owner intends to develop his property a land development agreement is signed between the municipality and the land-owner. Such agreements have been the custom for many years, but since January 1, 2015 new rules regarding land development agreements have been introduced in the Swedish Planning and Building Act. In the investigation for the new law, problems concerning the lack of transparency and the uneven contractual relationship are discussed. In this paper we have tried to determine whether the introduction of the new law has had any effect on the signing of contracts and the work surrounding them. We have also studied whether the land development agreements contain uncertainties, ambiguities and other risks. In our work we have found that the land development agreements accomplish what it is supposed to, but contains a number of the problems mentioned above. In our interviews the private land-owners expresses that the cooperation with the municipality is well functioning but there are areas that needs to be improved. The municipality is the more powerful part in the agreement which of course can be related to the planning monopoly. In spite of this we have found that the municipalities sometimes go beyond what is their right by law. Disputes that arises regarding land development agreements seldom gets tried in legal court. The very few cases regarding land development agreements makes it harder for the involved parts to settle on just terms. Our study also shows that newly introduced rules regarding land development agreements has had little impact on the signing of the agreements. Our interviewees express that they have not changed their ways concerning these agreements. Our conclusion is that land development agreements has problematic areas that might cause issues in the odd case. We think this might have to do with the law still being quite new. We also think some of the problematic areas can be improved upon by making small changes in the way we think and work with land development agreements. It is also important to note that the contractual freedom is very essential. Changes must be done without restricting this freedom in order to generate sustainable agreements

Using HFST—Helsinki Finite-State Technology for Recognizing Semantic Frames

To recognize semantic frames in languages with a rich morphology, we need computational morphology. In this paper, we look at one particular framework, HFST–Helsinki Finite-State Technology, and how to use it for recognizing semantic frames in context. HFST enables tokenization, morphological analysis, tagging, and frame annotation in one single framework.Peer reviewe

Search for supersymmetry in proton-proton collisions at <mml:msqrt>s</mml:msqrt>=13 TeV in events with high-momentum Z bosons and missing transverse momentum

A search for new physics in events with two highly Lorentz-boosted Z bosons and large missing transverse momentum is presented. The analyzed proton-proton collision data, corresponding to an integrated luminosity of 137 fb(-1), were recorded at s = 13 TeV by the CMS experiment at the CERN LHC. The search utilizes the substructure of jets with large radius to identify quark pairs from Z boson decays. Backgrounds from standard model processes are suppressed by requirements on the jet mass and the missing transverse momentum. No significant excess in the event yield is observed beyond the number of background events expected from the standard model. For a simplified supersymmetric model in which the Z bosons arise from the decay of gluinos, an exclusion limit of 1920 GeV on the gluino mass is set at 95% confidence level. This is the first search for beyond-standard-model production of pairs of boosted Z bosons plus large missing transverse momentum.Peer reviewe

Measurements of the W boson rapidity, helicity, double-differential cross sections, and charge asymmetry in pp collisions at root s=13 TeV

Peer reviewe

Measurements of production cross sections of polarized same-sign W boson pairs in association with two jets in proton-proton collisions at root s=13 TeV

The first measurements of production cross sections of polarized same-sign (WW +/-)-W-+/- boson pairs in proton-proton collisions are reported. The measurements are based on a data sample collected with the CMS detector at the LHC at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb(-1). Events are selected by requiring exactly two same-sign leptons, electrons or muons, moderate missing transverse momentum, and two jets with a large rapidity separation and a large dijet mass to enhance the contribution of same-sign (WW +/-)-W-+/- scattering events. An observed (expected) 95% confidence level upper limit of 1.17 (0.88) fbis set on the production cross section for longitudinally polarized same-sign W-+/- W-+/- boson pairs. The electroweak production of same-sign W-+/- W-+/- boson pairs with at least one of the W bosons longitudinally polarized is measured with an observed (expected) significance of 2.3 (3.1) standard deviations. (C) 2020 The Author(s). Published by Elsevier B.V.Peer reviewe

Measurement of the CP-violating phase phi(s) in the B-s(0) -> J/psi phi(1020) -> mu(+)mu-K+K- channel in proton-proton collisions at root s=13 TeV

The CP-violating weak phase ?s and the decay width difference ??s between the light and heavy B0s mass eigenstates are measured with the CMS detector at the LHC in a sample of 48 500 reconstructed B0s? J/I) d (1020) ?11+11? K+K? events. The measurement is based on a data sample corresponding to an integrated luminosity of 96.4 fb?1, collected in proton-proton collisions at ?s = 13 TeV in 2017?2018. To extract the values of ?s and ??s, a time-dependent and flavor-tagged angular analysis of the 11+11?K+K? final state is performed. The analysis employs a dedicated tagging trigger and a novel opposite-side muon flavor tagger based on machine learning techniques. The measurement yields ?s = ?11 ?50 (stat) ? 10 (syst) mrad and ??s = 0.114 ? 0.014 (stat)? 0.007 (syst) ps?1, in agreement with the standard model predictions. When combined with the previous CMS measurement at ?s = 8 TeV, the following values are obtained: ?s = ?21 ? 44 (stat) ? 10 (syst) mrad, ??s = 0.1032 ? 0.0095 (stat) ? 0.0048 (syst) ps?1, a significant improvement over the 8 TeV result. ? 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY licensePeer reviewe

Measurements of production cross sections of the Higgs boson in the four-lepton final state in proton-proton collisions at root s=13 TeV

Production cross sections of the Higgs boson are measured in the H -> ZZ -> 4l (l = e, mu) decay channel. A data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS detector at the LHC and corresponding to an integrated luminosity of 137 fb(-1) is used. The signal strength modifier mu, defined as the ratio of the Higgs boson production rate in the 4l channel to the standard model (SM) expectation, is measured to be mu = 0.94 +/- 0.07 (stat)(-0.08)(+0.09) (syst) at a fixed value of m(H) = 125.38 GeV. The signal strength modifiers for the individual Higgs boson production modes are also reported. The inclusive fiducial cross section for the H -> 4l process is measured to be 2.84(-0.22)(+0.23) (stat)(-0.21)(+0.26) (syst) fb, which is compatible with the SM prediction of 2.84 +/- 0.15 fb for the same fiducial region. Differential cross sections as a function of the transverse momentum and rapidity of the Higgs boson, the number of associated jets, and the transverse momentum of the leading associated jet are measured. A new set of cross section measurements in mutually exclusive categories targeted to identify production mechanisms and kinematical features of the events is presented. The results are in agreement with the SM predictions.Peer reviewe