Quantum Bayesian Networks

August 28, 2019

I have a Dream, Stardust

Filed under: Uncategorized — rrtucci @ 3:14 pm

August 21, 2019

Topologically protected state implemented with squids by Chinese group from Tsinghua Uni.

Filed under: Uncategorized — rrtucci @ 10:14 pm


August 17, 2019

Brendan Eich And SMBC comics voice their opinion on some quantum startups

Filed under: Uncategorized — rrtucci @ 2:40 pm

August 11, 2019

Day One of quantum-bnlearn

Filed under: Uncategorized — rrtucci @ 5:50 pm

I’ve sung the praises of bnlearn in this blog many times before.

bnlearn is an R package for structure learning of bayesian networks. (Note, however, that it is very easy and painless to call C from R, and all the time consuming parts of bnlearn, more than half of its code lines, are written in C. Also, in case you prefer python to R, a python wrapper for bnlearn is in the works. Until that wrapper comes out, R-magic allows you to call bnlearn in R within a python jupyter notebook. In fact, I do this in the jupyter notebooks of my program Quantum Fog.)

bnlearn is the labor of love, ten years in the making and still going strong, of the kind, smart, wise Marco Scutari.

I am sure that most of the stuff in bnlearn has a quantum bayesian networks analogue and will someday be part of what is nowadays being called in quantum computing circles, quantum ai. Whether quantum bnlearn will be useful for anything, or better in any way to its classical counterpart, God only knows, but it certainly will be different and interesting to explore. Let this blog post mark the first day of quantum bnlearn, which I will henceforth call Project Scutari, in honor of this great man.

August 5, 2019

Nitwit mansplains quantum computing to Sabine Hossenfelder

Filed under: Uncategorized — rrtucci @ 2:30 am

I reported on Reddit about Sabine’s article and got -17 ratings on two of my comments. A badge of honor in this case. I think that such a strong reaction against Sabine’s mild article and my comments shows that we hit a raw nerve, or hit close enough to one to cause sharp pain. Often, when you criticize someone, those to whom the criticism applies display their true colors in their response to that criticism. This has been the case in the response to Sabine’s article, on Reddit and on Twitter. I won’t get more specific than that. I leave it up to you to interpret this whole affair if it concerns you.


August 2, 2019

Quantum Ghosts, not

Filed under: Uncategorized — rrtucci @ 5:41 am

Check out

Quantum Ghosts by Catherine Klauss

The article reports that a group of Israeli programmers has added to IBM qiskit a simulator that stores a state vector for each possibility (“branch”) of a measurement. The article implies that this Israeli-qiskit simulator is the first to have this feature, but Qubiter has had this feature for 4 years. For example, Qubiter uses this feature in its notebook explaining Teleportation


The article also implies that this feature is equivalent to the Everett multi-world interpretation of quantum mechanics. Not true. This is just a computational device. You don’t have to believe in multiple worlds to use this computational device. In fact, an analogous computational device exists in classical probability, and one doesn’t have believe in multiple worlds to use that either.

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