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Solving 'barren plateaus' is the key to quantum machine learning

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Many machine learning algorithms on quantum computers suffer from the dreaded "barren plateau" of unsolvability, where they run into dead ends on optimization problems. This challenge had been relatively unstudied--until now. Rigorous theoretical work has established theorems that guarantee whether a given machine learning algorithm will work as it scales up on larger computers. "The work solves a key problem of useability for quantum machine learning. We rigorously proved the conditions under which certain architectures of variational quantum algorithms will or will not have barren plateaus as they are scaled up," said Marco Cerezo, lead author on the paper published in Nature Communications today by a Los Alamos National Laboratory team.


Machine Learning And Easter Egg Hunts

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Easter is the quintessential spring holiday, full of vibrant colors, sweets, and family traditions. And yet, it may also be one of the few holidays with a built-in competition: the infamous Easter egg hunt! It usually goes something like this: parents hide colored eggs throughout the yard and kids hunt to try and fill up their baskets before their treasures are scooped up by other seekers. It's the only time of the year when putting all your eggs in one basket is a good thing. As any master egg hunter knows, this is an exercise in pattern recognition and anomaly detection.


The Future of AI: Careers in Machine Learning

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If there is one thing we learned from the COVID-19 pandemic, it's that when humans are sent home, machines keep working. This doesn't mean that robots will take over the world. It does, however, mean that our technical landscape is changing. Human history has a long and favorable track record of technological advancements, particularly when it comes to ideas that seem ludicrous at the time (Wright brothers, anyone?). The printing press, assembly line and personal computer have all helped move civilization forward by leaps and bounds over the last few centuries.


Solving 'barren plateaus' is the key to quantum machine learning

#artificialintelligence

"The work solves a key problem of useability for quantum machine learning. We rigorously proved the conditions under which certain architectures of variational quantum algorithms will or will not have barren plateaus as they are scaled up," said Marco Cerezo, lead author on the paper published in Nature Communications today by a Los Alamos National Laboratory team. Cerezo is a post doc researching quantum information theory at Los Alamos. "With our theorems, you can guarantee that the architecture will be scalable to quantum computers with a large number of qubits." "Usually the approach has been to run an optimization and see if it works, and that was leading to fatigue among researchers in the field," said Patrick Coles, a coauthor of the study.


Mixed reality gets a machine learning upgrade

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Osaka, Japan - Scientists from the Division of Sustainable Energy and Environmental Engineering at Osaka University employed deep learning artificial intelligence to improve mobile mixed reality generation. They found that occluding objects recognized by the algorithm could be dynamically removed using a video game engine. This work may lead to a revolution in green architecture and city revitalization. Mixed reality (MR) is a type of visual augmentation in which real-time images of existing objects or landscapes can be digitally altered. As anyone who has played Pokémon Go! or similar games knows, looking at a smartphone screen can feel almost like magic when characters appear alongside real landmarks.


Why Do Local Methods Solve Nonconvex Problems?

arXiv.org Machine Learning

Non-convex optimization is ubiquitous in modern machine learning. Researchers devise non-convex objective functions and optimize them using off-the-shelf optimizers such as stochastic gradient descent and its variants, which leverage the local geometry and update iteratively. Even though solving non-convex functions is NP-hard in the worst case, the optimization quality in practice is often not an issue -- optimizers are largely believed to find approximate global minima. Researchers hypothesize a unified explanation for this intriguing phenomenon: most of the local minima of the practically-used objectives are approximately global minima. We rigorously formalize it for concrete instances of machine learning problems.


How many robot helpers are too many?

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AI that can follow a person seems like a simple enough task. It's certainly a simple thing to ask a human to do, but what if people or objects get in the way of the robot following behind a person? How do you navigate an environment that's in a constant state of change? About a year ago at a robotics conference TechCrunch held at UC Berkeley, AI startup founders explored solutions for common problems encountered when trying to automate construction projects. Tessa Lau, CEO of Dusty Robotics, called attention to the challenge of moving machines in an unstructured environment filled with people.


Novel deep learning framework for symbolic regression

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Lawrence Livermore National Laboratory (LLNL) computer scientists have developed a new framework and an accompanying visualization tool that leverages deep reinforcement learning for symbolic regression problems, outperforming baseline methods on benchmark problems. The paper was recently accepted as an oral presentation at the International Conference on Learning Representations (ICLR 2021), one of the top machine learning conferences in the world. The conference takes place virtually May 3-7. In the paper, the LLNL team describes applying deep reinforcement learning to discrete optimization--problems that deal with discrete "building blocks" that must be combined in a particular order or configuration to optimize a desired property. The team focused on a type of discrete optimization called symbolic regression--finding short mathematical expressions that fit data gathered from an experiment.


Active Dynamical Prospection: Modeling Mental Simulation as Particle Filtering for Sensorimotor Control during Pathfinding

arXiv.org Artificial Intelligence

What do humans do when confronted with a common challenge: we know where we want to go but we are not yet sure the best way to get there, or even if we can. This is the problem posed to agents during spatial navigation and pathfinding, and its solution may give us clues about the more abstract domain of planning in general. In this work, we model pathfinding behavior in a continuous, explicitly exploratory paradigm. In our task, participants (and agents) must coordinate both visual exploration and navigation within a partially observable environment. Our contribution has three primary components: 1) an analysis of behavioral data from 81 human participants in a novel pathfinding paradigm conducted as an online experiment, 2) a proposal to model prospective mental simulation during navigation as particle filtering, and 3) an instantiation of this proposal in a computational agent. We show that our model, Active Dynamical Prospection, demonstrates similar patterns of map solution rate, path selection, and trial duration, as well as attentional behavior (at both aggregate and individual levels) when compared with data from human participants. We also find that both distal attention and delay prior to first move (both potential correlates of prospective simulation) are predictive of task performance.


The Dynamic Role of HR in the E-commerce Space - ETHRWorld

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Vanya Gambhir, COO, KhojdealBy Vanya Gambhir Digital is the new face of organisations and the driving force behind their transformation. The pace at which digital has been reshaping the playing field, organisations and their people might face issues fully embracing such fundamental changes. Today, digital transformation and its implications on HR is no longer a niche subject. Having taken roots deep inside organisations, it requires developing new ways to influence core operating models and their designs. The e-commerce landscape, however, needs a boost in automation and the implementation of artificial intelligence.