Independent component analysis (ICA), formulated as a density estimation problem, is extended to a mixture density model. A number of ICA blocks, associated to implicit equivalent classes, are updated in turn on the basis of the estimated density they represent. The approach is equivalent to the EM algorithm and allows an easy non linear extension of all the current ICA algorithms. We also show...

Wavelet-based analysis versus Gaussian smoothing in statistical parametric mapping (SPM) for detecting and analyzing brain activity from functional magnetic resonance imaging (fMRI) data is presented. Detection of activation in fMRI data can be performed in the wavelet domain by a coefficient-wise statistical t-test. The link between the wavelet analysis and SPM is based on two observations: (i...

the objective of this review to be submitted in two independent parts, for steel frames and for rc frames, is to compare their structural performance with respect to the proposed n2-method, and so also of the consequent convenience of using pushover methodology for the seismic analysis of these structures. a preliminary investigation is presented on a pushover analysis used for the seismic perf...

The dynamic properties of a layer-oriented multi-conjugate adaptive optics system are examined. It is shown that such a system is stable and closes the loop. A simplified analysis of the achievable correction is presented, in order to define the conditions in which the layer-oriented approach is equivalent to other linear reconstruction schemes. It is found that this approach is equivalent to a...

Many papers in the field of integer linear programming (ILP, for short) are devoted to problems type $$\max \{c^\top x :A = b,\, \in {{\,\mathrm{\mathbb {Z}}\,}}^n_{\ge 0}\}$$ , where all entries A, b, c integer, parameterized by number rows A and $$\Vert A\Vert _{\max }$$ . This class is known under name ILP standard form, adding word ”bounded” if $$x \le u$$ some vector u. Recently, many new ...