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Peak-searching data reduction

Data reduction methods which are widely used in library search have also been tested for pattern recognition- The k largest peaks in a spectrum (k = 5 to 50), or selection of the k largest peaks in mass intervals of length I (k = 1 to 2, I = 7 or 14) were utilized for... [Pg.148]

In addition to these methods, Vogels and co-workers" presented a preprocessing tool that uses a partial linear fit (PLF) algorithm to correct for small variations in the chemical shift within NMR data sets, without reduction of resolution and loss of spectral fine structure. Recently, a method using a combination of rapid search techniques and sparse mapping has also been proposed for the peak alignment of NMR data. ... [Pg.49]

The success of a library search in analytical chemistry depends very much on the data representation. Different kinds of data (numerical, textual, spectral, structural) require appropriate treatments. Usually, spectral data collected from the instruments are not in a form suitable for direct input either into a collection or as a query for a library search. Once the spectrum is in the computer, a number of preprocessing steps (e.g., smoothing, baseline correction, normalization, peak and intensity detection, reduction of the measurement space, autocorrelation, deconvolution, shape tracing, etc.) should be applied in order to bring the data into a standardized format... [Pg.4546]

The conclusion therefore is that in some subjects (with triple search) the reaction time distribution does not show a first peak in the expected place at mincycEN = 2 but at mincycEN = 4. This implies an additional reduction of the linear pathway of 2ET and a prolongation of the cyclical pathway of the same amount. To take the decision where the first peak may be localized, ERP data may be helpful. It is not convenient to change the linear pathways in all subjects with triple search. In this work the linear pathways have not been changed at all after knowing the ERP data but the necessity to reduce the linear pathway may be assumed in some subjects. [Pg.282]


See other pages where Peak-searching data reduction is mentioned: [Pg.106]    [Pg.220]    [Pg.122]    [Pg.48]    [Pg.209]    [Pg.106]    [Pg.1089]    [Pg.409]    [Pg.580]    [Pg.375]   
See also in sourсe #XX -- [ Pg.89 ]




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