Parameterized Quantum Circuit
Get introduced to the concept of a PQC binary classifier and its implementation.
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In the previous chapter, we created different hypocrites classifiers. These are classifiers that build solely upon chance when predicting the label of a thing. While such a classifier can yield good performance in a single measure, such as precision, it does not reach an average beyond 0.5 for the four measures that directly result from the confusion matrix, namely precision, recall, specificity, and NPV.
A simple PQC binary classifier
In this lesson, we use a quantum circuit to solve our binary classification task. This quantum circuit is a parameterized quantum circuit (PQC). A PQC is a quantum circuit that takes all the data it needs as input parameters and has its name parameterized as a result. It predicts the label of the thing based on these parameters.
The following figure depicts the simple PQC we are about to build in this section.
This PQC takes a single quantum state ...