W is the working set, a representative sample of instances from the problem space.
Yerushalmy (1987 , 1993 decomposed students' work on conjecturing tasks into three conjecturing activities: developing and identifying categories for generalization, forming a coherent sample of instances, and inducing generality from a sample of instances.
A bootstrap sample of instances from the data is used to train each tree in the forest.
In Bagging, each base classifier is constructed on a bootstrap sample of the original training data, that is, a random sample of instances drawn with replacement and having the same size as the original training data.
Briefly, in a RF model, each decision tree is constructed using a bootstrapped sample of instances from the training data n and a randomly selected subset of features f, consisting of x < m features.
A RF is a collection of individual decision tree classifiers, where each tree in the forest has been trained using a bootstrap sample of instances (i.e. subjects) from the data, and each attribute in the tree is chosen from among a random subset of attributes (Breiman, 2001).
In addition, we will use known trios and pedigrees to compare individual samples for instances of non-maternity and non-paternity as potential indicators of sample identification error.
The total rRNA proportion is a sign of the quality of the samples, for instance, the proportion of total rRNA should be less than 60% in plant samples [ 19], and 40% in animal samples (unpublished data by BGI).
In conclusion, read count-based genotyping can be cost- and time-effective for medium scale experiments already, i.e. targeting a few hundred loci across a few dozen of samples for instance.
A recent internal United Nations review found that in a sample of 16 instances of violence against civilians and peacekeepers, the mission had failed to properly investigate about a third of them.
