# Guide for Qiskit's Measurement Error Mitigation?

I'm reading about error correction mainly in the Qiskit Measurement error mitigation chapter contains what it seems and easy way to "clean up" the noise obtained in the IBM (or NISQ) devices. One thing that I feel is missing is what is the logic behind the method?

The example in the ebook is clear, but I would like to know what it is that way. I started looking in the literature and found, as expected, different approaches to do so. What is (or resembles most) the method presented in Qiskit? Can someone provide literature?

• This paper titled "Mitigating measurement errors in multi-qubit experiments" by Sergey Bravyi et al. might help: arxiv.org/pdf/2006.14044.pdf The link you provided seem to correspond to the unbiased error mitigation section in the paper (section II) – KAJ226 Jun 3 at 13:16

The main difference between the methods used to create the mitigation matrix is the assumptions they make. The method presented in the textbook creates the matrix executing one circuit for each basis state, which requires $$2^n$$ circuits, with n being the number of qubits. When n becomes too large for this to be a convenient method, you can use some of the other techniques proposed in the paper, like tensored mitigation and CTMP. These techniques are also implemented in qiskit.