Variable Definition and Independent Components

Independent components of natural images under variable compression rate

A generalized ICA model allowing overcomplete bases and additive noises in the observables is applied to natural image data. It is well known that such a model produces independent components that resemble simple cells in primary visual cortex or Gabor functions. We adopt a variable-sparsity density on each independent component, given by the mixture of a delta function and a standard Gaussian ...

Identification of Two Main Independent Components of Fibrillating Heart Muscle

Fibrillation is a hazardous phenomenon in cardiac muscle and so any new work towards the understanding of this process is important to the development of new methods in diagnosis and therapy. In this work we have used surface and intra cardiac ECGs of patients with chronic atrial fibrillation (AF). By means of the blind source separation (BSS) algorithm, which is a well-known method in signal p...

Steganography, BioPatterns and Independent Components

In this paper we discuss the development of steganography in the context of the electronic Patient Health Record. We exploit the signal processing aspects of a frame-based approach of expanding signals using a nonorthogonal basis of independent components derived from the data, and investigate the consequences of applying the framework to different dimensionality biopatterns. The integrity of t...

dependent and independent virtues and vices; a new division and definition in ethics

so far, moral features have been divided into absolute and relative, individual and social, temporary and permanent and so on. the least advantage of these divisions and separations is a help to moral studies and a better and systematic understanding of moral values and anti-values for moral doers. in this essay according to a cause and effect, and necessary relationship which might be among so...

Independent Variable Group Analysis