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A novel entropy method for classification of biosignals
No full textIn this paper a linear transformation, the spiral method, is introduced; this transformation maps an image represented in a 3-D space into a signal in a 2-D space. Some features of the spiral are presented: for instance the topologic information of the objects in the image, their contours, areas and the shape of the objects themselves. Two different case-study are presented: the use of spiral method in order to evaluate the number, the size, the shape and the location of the micorcalcifications by the use of signals related to the mammograms; entropy is proposed as a measure of the degree of the parenchyma disorder of the mammograms and its use for a system CAD
The Role Of Entrophy In Signal Analysis And Classification:An Application To Breast Diagnosis
No full text
Syntopic taxa in the Sylvia cantillans species complex
No full textDistributional relationships among closely related taxa can provide key information about the levels of their
reproductive isolation or compatibility, and thus the stage of speciation process. Here, we present new information on
the sites where two taxa traditionally considered as subspecies of the Subalpine Warbler Sylvia cantillans, S. c. cantillans
and S. (c.) moltonii, breed sympatrically in mainland Italy. We analyse geographic distribution and behaviour as well as
other characteristics shown by these warblers in the areas of contact. The distributional pattern shown by these taxa,
which is partly sympatric with syntopic breeding, and the apparent lack of interbreeding, strongly suggest that they
behave as different species, confirming previous findings about genetic divergence and differential song perception
The Spiral Method applied to the Study of the Microcalcifications in Mammograms
No full textIn this paper a linear transformation, the spiral method, is introduced; this transformation maps an image represented in a 3-D space into a signal in a 2-D space. Some features of the spiral are presented: for instance the topologic information of the objects in the image, their contours, areas and the shape of the objects themselves, Two different case-study are presented: the use of spiral method in order to evaluate the number, the size, the shape and the location of the microcalcifications by the use of signals related to the mammograms; entropy is proposed as a measure of the degree of the parenchyma disorder of the mammograms and its use for a system CAD. © Springer-Verlag Berlin Heidelberg 2005
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