South America
Hierarchical Reinforcement Learning for Multi-agent MOBA Game
Zhang, Zhijian, Li, Haozheng, Zhang, Luo, Zheng, Tianyin, Zhang, Ting, Hao, Xiong, Chen, Xiaoxin, Chen, Min, Xiao, Fangxu, Zhou, Wei
Although deep reinforcement learning has achieved great success recently, there are still challenges in Real Time Strategy (RTS) games. Due to its large state and action space, as well as hidden information, RTS games require macro strategies as well as micro level manipulation to obtain satisfactory performance. In this paper, we present a novel hierarchical reinforcement learning model for mastering Multiplayer Online Battle Arena (MOBA) games, a sub-genre of RTS games. In this hierarchical framework, agents make macro strategies by imitation learning and do micromanipulations through reinforcement learning. Moreover, we propose a simple self-learning method to get better sample efficiency for reinforcement part and extract some global features by multi-target detection method in the absence of game engine or API. In 1v1 mode, our agent successfully learns to combat and defeat built-in AI with 100\% win rate, and experiments show that our method can create a competitive multi-agent for a kind of mobile MOBA game King of Glory (KOG) in 5v5 mode.
Artificial Intelligence Automation Economy
These transformations will open up new opportunities for individuals, the economy, and society, but they have the potential to disrupt the current livelihoods of millions of Americans. Whether AI leads to unemployment and increases in inequality over the long-run depends not only on the technology itself but also on the institutions and policies that are in place. This report examines the expected impact of AI-driven automation on the economy, and describes broad strategies that could increase the benefits of AI and mitigate its costs. Economics of AI-Driven Automation Technological progress is the main driver of growth of GDP per capita, allowing output to increase faster than labor and capital. One of the main ways that technology increases productivity is by decreasing the number of labor hours needed to create a unit of output.
Rio de Janeiro will deploy facial recognition cameras during its carnival
Facial recognition is increasingly used as way to access your money and your devices. When it comes to policing, it could soon mean the difference between freedom and imprisonment. Faces can be scanned at a distance, generating a code as unique as your fingerprints. This is created by measuring the distance between various points, like the width of a person's nose, distance between the eyes and length of the jawline. Facial recognition systems check more than 80 points of comparison, known as'nodal points', combining them to build a person's faceprint.
Lab-grown mini brains could become new disease models
The first perfumes designed by AI are slated for launch in mid-2019 in Brazil. Developed at IBM, in partnership with perfume company Symrise, the AI programme used drew upon a database of 1.7m different fragrance formulas, and used information on raw materials and the success of previously developed perfumes. It was also taught to identify which fragrances people found similar and dissimilar – getting training akin to an apprentice perfumer. Called Philyra, after the Greek goddess of fragrance, the AI programme developed two new fragrances for Brazilian beauty company O Boticário. 'What she did was super innovative.
Multiobjective Coverage Path Planning: Enabling Automated Inspection of Complex, Real-World Structures
Ellefsen, Kai Olav, Lepikson, Herman A., Albiez, Jan C.
An important open problem in robotic planning is the autonomous generation of 3D inspection paths -- that is, planning the best path to move a robot along in order to inspect a target structure. We recently suggested a new method for planning paths allowing the inspection of complex 3D structures, given a triangular mesh model of the structure. The method differs from previous approaches in its emphasis on generating and considering also plans that result in imperfect coverage of the inspection target. In many practical tasks, one would accept imperfections in coverage if this results in a substantially more energy efficient inspection path. The key idea is using a multiobjective evolutionary algorithm to optimize the energy usage and coverage of inspection plans simultaneously - and the result is a set of plans exploring the different ways to balance the two objectives. We here test our method on a set of inspection targets with large variation in size and complexity, and compare its performance with two state-of-the-art methods for complete coverage path planning. The results strengthen our confidence in the ability of our method to generate good inspection plans for different types of targets. The method's advantage is most clearly seen for real-world inspection targets, since traditional complete coverage methods have no good way of generating plans for structures with hidden parts. Multiobjective evolution, by optimizing energy usage and coverage together ensures a good balance between the two - both when 100% coverage is feasible, and when large parts of the object are hidden.
Innovative ideas to address global challenges
As a forerunner facing various social challenges, including addressing the aging population, as well as environmental and energy issues, Japan is poised to find solutions and share them with other countries that are also expected to be confronted with these complex problems. Through hosting the upcoming G20 summit in Osaka in June, the country will promote further cooperation among all relevant stakeholders, both government and non-governmental, toward a future society that realizes both economic growth and solutions for such issues. The annual meeting of the World Economic Forum (WEF) in Davos, Switzerland, will be a timely occasion for world leaders to address these growing challenges as the conference aims to delve into the topics to "shape a new framework for global cooperation," preparing for the arrival of "Globalization 4.0" driven by the "Fourth Industrial Revolution." Assuming the G20 presidency immediately after the Buenos Aires summit in December, Prime Minister Shinzo Abe stated Japan would seek to realize a "human-centered future society," promoting discussions in cross-cutting areas. "Japan is determined to lead global economic growth by promoting free trade and innovation, achieving both economic growth and reduction of disparities, and contributing to the development agenda and other global issues with the SDGs (United Nations Sustainable Development Goals) at its core," Abe said. "In addition, we will lead discussions on the supply of global commons for realizing global growth such as quality infrastructure and global health," he continued. "We will exert strong leadership in discussions aimed toward resolving global issues such as climate change and ocean plastic waste."
Machines that listen
A group of scientists from the Massachusetts Institute of Technology (United States) has created a machine learning system that processes sounds like people. This model can understand the meaning of a word and classify a song according to its genre or style: classical, jazz, pop, rock, blues, soul, hip hop, techno, house, etc. It is the first invention of this type that mimics the way the brain works. As the experiments carried out at MIT show, it can compete in precision with humans. The research, published in the journal Neuron, is based on deep neural networks, that is, a structure inspired by brain cells that analyses information by layers.
Algorithms for Estimating Trends in Global Temperature Volatility
Khodadadi, Arash, McDonald, Daniel J
Trends in terrestrial temperature variability are perhaps more relevant for species viability than trends in mean temperature. In this paper, we develop methodology for estimating such trends using multi-resolution climate data from polar orbiting weather satellites. We derive two novel algorithms for computation that are tailored for dense, gridded observations over both space and time. We evaluate our methods with a simulation that mimics these data's features and on a large, publicly available, global temperature dataset with the eventual goal of tracking trends in cloud reflectance temperature variability.
Hierarchical Attentional Hybrid Neural Networks for Document Classification
Abreu, Jader, Fred, Luis, Macêdo, David, Zanchettin, Cleber
Document classification is a challenging task with important applications. Deep learning approaches to the problem have gained much attention. Despite the progress, the proposed models do not incorporate the knowledge of the document structure in the architecture efficiently and not take into account the contexting dependent importance of words and sentences. In this paper, we propose a new approach based on convolutional neural networks, gated recurrent units and attention mechanisms for document classification tasks. The datasets IMDB Movie Reviews and Yelp were used in experiments. The proposed method improves the results of current attention-based approaches