We consider the synchronization problem for a class of directed networks where the agents receive relative output information from their neighbors, but lack independent information about their own state or output (they are non-introspective) and are unable to exchange internal controller states with their neighbors. We consider three classes of networks defined by the properties of the agent dy...

I consider the problem of learning an optimal path graphical model from data and show the problem to be NP-hard for the maximum likelihood and minimum description length approaches and a Bayesian approach. This hardness result holds despite the fact that the problem is a restriction of the polynomially solvable problem of nding the optimal tree graphical model.

We study parametric unsupervised mixture learning. We measure the loss of intrinsic information from the observations to complex mixture models, and then to simple mixture models. We present a geometric picture, where all these representations are regarded as free points in the space of probability distributions. Based on minimum description length, we derive a simple geometric principle to lea...

The composite autoregressive system can be used to estimate a speech source-filter decomposition in a rigorous manner, thus having potential use in glottal inverse filtering. By introducing a suitable prior, spectral tilt can be introduced into the source component estimation to better correspond to human voice production. However, the current expectationmaximisation based composite autoregress...

background: conducted researches show that psychological factors may have a very important role in the etiology, continuity and consequences of coronary heart diseases. this study has drawn the psychological risk and protective factors and their effects in patients with coronary heart diseases (chd) in a structural model. it aims to determine the structural relations betweenpsychological risk a...

driven precast reinforced concrete piles (dprcp) is extensively used as a foundation for bridges constructed over canals in egypt in order to avoid the diversion of water canals. the objectives of this research include identifying the main activities of dprcp execution in the bridge-construction industry in egypt and the risk factors affecting them. in addition, assessment of the effects of the...

background: various studies show an association between lack of social skills in adolescents and the future incidence of behavioral disorders. if girls, as future mothers, lack adequate health, awareness, self confidence and social skills, they may act as a source of many social problems. therefore, the present study has tried to educate this group on one of the most essential social skills, re...

BACKGROUND It is unclear how much of the reduction in cardiac mortality in coronary heart disease (CHD) patients with exercise training is the result of direct effects on the heart and coronary vasculature, or to indirect effects, via primary risk factors. OBJECTIVE The aim of this article was to quantify the cardiac mortality benefits of exercise-based rehabilitation attributable to risk fac...

................................................................................................................................................................... iii Acknowledgements.................................................................................................................................................. iv  The Silviculture Survey System..................................

introduction: gail model is one of the most important models for the evaluation of breast cancer risk between us white females. according to genetic diversity, there is a possibility of affecting the efficiency of the gail model in risk assessment of breast cancer among iranian populations. in this study, the gail model efficiency in specifying the risk of breast cancer in iranian population wa...