Akureyri
Generative Modeling with Quantum Neurons
Gili, Kaitlin, Kumar, Rohan S., Sveistrys, Mykolas, Ballance, C. J.
The recently proposed Quantum Neuron Born Machine (QNBM) has demonstrated quality initial performance as the first quantum generative machine learning (ML) model proposed with non-linear activations. However, previous investigations have been limited in scope with regards to the model's learnability and simulatability. In this work, we make a considerable leap forward by providing an extensive deep dive into the QNBM's potential as a generative model. We first demonstrate that the QNBM's network representation makes it non-trivial to be classically efficiently simulated. Following this result, we showcase the model's ability to learn (express and train on) a wider set of probability distributions, and benchmark the performance against a classical Restricted Boltzmann Machine (RBM). The QNBM is able to outperform this classical model on all distributions, even for the most optimally trained RBM among our simulations. Specifically, the QNBM outperforms the RBM with an improvement factor of 75.3x, 6.4x, and 3.5x for the discrete Gaussian, cardinality-constrained, and Bars and Stripes distributions respectively. Lastly, we conduct an initial investigation into the model's generalization capabilities and use a KL test to show that the model is able to approximate the ground truth probability distribution more closely than the training distribution when given access to a limited amount of data. Overall, we put forth a stronger case in support of using the QNBM for larger-scale generative tasks.
Animal Crossing's massive popularity has made it less like paradise and more like Wall Street
With hours of extra time on their hands because of social distancing and quarantine, new players to Nintendo's "Animal Crossing: New Horizons" like Ash Wolf, also known on Twitter as Ninji, have been drawn to the slow, laid-back life simulator that allows them to build idyllic islands, decorate their homes, visit friends and more. "People are using this as a sort of escape," Wolf said. "I joked when I first got the game that it was literally the only thing giving me structure in my life." But this influx of new users produced an unexpected evolution, recalibrating the game's serene speed to a fast-paced hustle one player compared to Wall Street. Animal Crossing isn't designed for such gameplay -- in fact, it purposefully slows players down by design. Yet the game's community became obsessed with optimization, in the process exploiting features meant to encourage day-by-day progress. Now, they've become a dominant part of the audience, finding loopholes or strategies to get rich fast.