In logic a conjunction is defined as an AND between truth statements. In neuroimaging, investigators may look for brain areas activated by task A AND by task B, or a conjunction of tasks (Price, C.J., Friston, K.J., 1997. Cognitive conjunction: a new approach to brain activation experiments. NeuroImage 5, 261-270). Friston et al. (Friston, K., Holmes, A., Price, C., Buchel, C., Worsley, K., 199...

When a reliability analysis, survival analysis, or discrete-event simulation input modeling analysis is performed, it is typically the case that a modeler collects data associated with some system under consideration. Although this raw data provides an initial insight into the stochastic elements of the system, often it is desirable to construct a model of the system which is tractable for math...

The edge detection approach based on minimal spanning tree and vector order statistic is proposed. Minimal spaning tree determined ranking from the observations and identified classes that have similarities. Vector Order Statistic view a color image as a vector field and employ as a distance metrics. Experiment of edge detection on several images show that the result of minimal spanning tree is...

On the basis of the analysis of the statistical data of bus transport networks of three major cities in China, we propose a novel evolution model of the bus transport network, which applies the strategy of random walk based on direction constrain matrix on two-dimensional grid and the mechanism of combining the geographical-close stations. We investigate some static properties, which include th...

In this paper, we propose a robust unsupervised change detection algorithm for multilook polarimetric synthetic aperture radar (PolSAR) data. The Hotelling-Lawley trace (HLT) statistic is used as a test statistic to measure the similarity of two covariance matrices. The generalized Kittler and Illingworth (K&I) minimum-error thresholding algorithm is then applied on the test statistic image to ...

Multivariate generalizations of the Wald-Wolfowitz runs statistic and the Smirnov maximum deviation statistic for the two-sample problem are presented. They are based on the minimal spanning tree of the pooled sample points. Some null distribution results are derived, and a simulation study of power is reported. (To be published in Annals of Statistics) *Supported by Department of Energy **Supp...

Minimum evolution is a class of parsimonious distance-based phylogenetic reconstruction methods. One noteworthy example is balanced minimum evolution (BME), which is the theoretical underpinning of the neighbor-joining algorithm. The robustness of a minimum evolution method can be captured in part by a statistic known as its L∞ radius. BME is known to have L∞ radius 1 2 , the best possible. We ...

The power spectrum of the δn statistic of quantum spectra presents 1/f α noise. For chaotic systems α = 1 while for regular systems α = 2. Although the transition from regularity to chaos is non universal, for a wide variety of systems with a mixed phase space the value of α is intermediate between 1 and 2 and can be related to the fraction of regular or chaotic orbits in the total phase space....