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81.
Daniel Janssen Wolfgang I. Schöllhorn Jessica Lubienetzki Karina Fölling Henrike Kokenge Keith Davids 《Journal of Nonverbal Behavior》2008,32(2):79-92
This paper describes an application of emotion recognition in human gait by means of kinetic and kinematic data using artificial
neural nets. Two experiments were undertaken, one attempting to identify participants’ emotional states from gait patterns,
and the second analyzing effects on gait patterns of listening to music while walking. In the first experiment gait was analyzed
as participants attempted to simulate four distinct emotional states (normal, happy, sad, angry). In the second experiment,
participants were asked to listen to different types of music (excitatory, calming, no music) before and during gait analysis.
Derived data were fed into different types of artificial neural nets. Results showed not only a clear distinction between
individuals, but also revealed clear indications of emotion recognition in nets. 相似文献
82.
Copulas and frailty models are important tools to model bivariate survival data. Equivalence between Archimedean copula models and shared frailty models, e.g. between the Clayton-Oakes copula model and the shared gamma frailty model, has often been claimed in the literature. In this note we show that, in both the models, there is indeed a well-known equivalence between the copula functions; the modeling of the marginal survival functions, however, is quite different. The latter fact leads to different joint survival functions. 相似文献
83.
Michael Brendel Arnold Janssen Claus‐Dieter Mayer Markus Pauly 《Scandinavian Journal of Statistics》2014,41(3):742-761
In biomedical research, weighted logrank tests are frequently applied to compare two samples of randomly right censored survival times. We address the question how to combine a number of weighted logrank statistics to achieve good power of the corresponding survival test for a whole linear space or cone of alternatives, which are given by hazard rates. This leads to a new class of semiparametric projection tests that are motivated by likelihood ratio tests for an asymptotic model. We show that these tests can be carried out as permutation tests and discuss their asymptotic properties. A simulation study together with the analysis of a classical data set illustrates the advantages. 相似文献
84.
We investigated implicit versus explicit activation of the sexual system using a priming paradigm in which sexual slides were preceded by either sexual or neutral primes. In the first experiment, primes were made inaccessible to conscious cognitive elaboration. Identification of sexual targets was facilitated by sexual primes, indicating that sexual representations in memory can be activated automatically. In the second experiment, in which primes were presented at a conscious level, identification of sexual targets was decelerated by sexual primes. Primes elicited subjective sexual arousal in Experiment 2 only, demonstrating that the activation of subjective experience requires conscious cognitive elaboration. With the addition of a sexually specific physiological measure, to be constructed to measure initial genital responses, this paradigm may help elucidate activational mechanisms of sexual response. 相似文献