Sentence examples for spot class from inspiring English sources

Carrying out two separate analyses according to spot class, we obtain a higher discriminatory power for spots recognizing T genes, when using a T control.

In hybridizations with the T control one optimal threshold is chosen from the LR values of the spot class recognizing T genes (T, TR and TG spots) while another threshold is adopted for the spot class not recognizing T genes (R, G and RG spots).

For hybridizations using the mix control the two classes of spots analyzed separately were the spot class recognizing genes present in one strain only (T, R and G spots) and the spot class identifying genes present in two strains (TR, TG and RG spots).

In the two classes with a present call, the unity ratio results from maximal signal intensity in both test and control, while for the absent spot class, both channels should produce a null signal.

In these hybridizations all the spot classes with absent calls have expected signal ratios lower than 1.

In practice, the three spot classes described above will produce decreasing ratio values, represented in Table 1 as 0/1, 0/2 and 0/3, respectively.

There are three spot classes with an expected ratio of 1, two of which have a present call while the other should lead to an absent call.

The improved performance of analyzing the data separated into spot classes, instead of analyzing all spots together, is apparent in Figure 2, where for both types of control AUC values are consistently higher when spots are analyzed separately.

Still, we expect both control choices to behave similarly for TRG spots because the control channel in both approaches has the same expected signal intensity (Table 1) and therefore the resulting LR distributions for these spots are similar in terms of location and, in comparison with other spot classes, present lower dispersion.

Although the advantages of performing an analysis by spot classes were not formally explored, a few previous studies using multistrain arrays with a single strain control have opted for defining two thresholds for spots present or absent in the control [ 9] or running the analysis algorithm twice, inverting the LR values [ 8].

He led a weekend oil-spotting class for about a dozen people in Gulf Shores, Alabama, telling them what to look for and who to call when they find it.