The phrase "a true class of" is correct and usable in written English.
It can be used when categorizing or defining a specific group that meets certain criteria or characteristics.
Example: "In the realm of literature, the novel represents a true class of storytelling that transcends time and culture."
Alternatives: "a genuine category of" or "an authentic type of".
Is the observed effect of amitriptyline a true class effect of tricyclic antidepressants or specific to a subset of tricyclics?
It is difficult to know whether this is a true class effect of antispasmodics.
To his supporters, the father of four was a true class warrior, one of the most effective negotiators in the UK union movement, getting good pay and conditions for his members, willing to stand up for their rights.
SVMs are trained by finding the hyperplane that optimally separates two classes of data points from a training set (where the true class of each datum is known) (Vapnik and Lerner 1963), with each data point represented by a vector of multiple measured attributes or "features".
Assume C i is the true class of document i, C i ' is the error class of i.
The proportion of times that j is not equal to the true class of n averaged over all cases is the OOB error estimate.
This prediction is made using the expression profile of sample 1, but obviously without using knowledge of the true class of sample 1. Symbolically, if x 1 denotes the complete expression profile of sample 1, then we apply model M1 to x 1 to obtain a predicted class ĉ1.
The other one is the test accuracy, computed as: (3) A c c = 1 N t ∑ i = 1 N t I Q x i, y i - m a x j ≠ y i Q x i, j > 0 where I is the indicator function, y i indicates the true class of x i ∈ D t and Q (x i, j ) = ∑ k = 1 K I (ĥ k (x k ) = j ) the number of votes for x i on class j.
Artificial Neural Networks, in particular Multilayer Perceptrons (here called simply Neural Networks, or NNs) are built up of three or more layers of nodes and weighted connections between them; weights are set maximizing the rate at which the output layer correctly identifies the true class of given examples.
For each protein domain of a query gene, we constructed a representative data set of alignments by computing all its pairwise alignments with a set of 1,538 protein domains representing all superfamilies of the seven true classes of SCOP [ 17].
