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Learning Improvement Heuristics for Solving the Travelling Salesman Problem
Wu, Yaoxin, Song, Wen, Cao, Zhiguang, Zhang, Jie, Lim, Andrew
Recent studies in using deep learning to solve the Travelling Salesman Problem (TSP) focus on construction heuristics, the solution of which may still be far from optimal-ity. To improve solution quality, additional procedures such as sampling or beam search are required. However, they are still based on the same construction policy, which is less effective in refining a solution. In this paper, we propose to directly learn the improvement heuristics for solving TSP based on deep reinforcement learning. We first present a reinforcement learning formulation for the improvement heuristic, where the policy guides selection of the next solution. Then, we propose a deep architecture as the policy network based on self-attention. Extensive experiments show that, improvement policies learned by our approach yield better results than state-of-the-art methods, even from random initial solutions. Moreover, the learned policies are more effective than the traditional handcrafted ones, and robust to different initial solutions with either high or poor quality. 1 Introduction The Travelling Salesman Problem (TSP) is a typical combinatorial optimization problem that has extensive applications in the real world. The problem statement is straightforward: given a set of locations, find the salesman a shortest tour that traverses each location exactly once and returns to the original one. Although having been widely studied for decades, achieving satisfactory performance is still challenging due to its NPhard complexity.
A researcher in Japan designed an AI program for Othello that always loses to human players
A new online version of the game Othello has become a hit in Japan because the AI has been designed to always lose, and players love it. The game, called'The weakest AI Othello,' was released in August and has since attracted over 400,000 players for more than 1.29 million games. It was developed by Takuma Yoshida, who works at Avilen,a Tokyo firm that designs AI and machine learning tools for businesses. 'The Weakest AI Othello' is an online version of the popular board game, in which the computer AI has been designed to always lose to the human player One day at work, Yoshida began to question why he was spending so much time trying to engineer software to outperform humans. He wondered whether human attitudes toward AI and robotics might be different if humans didn't always expect to be beaten by them, according to a report in the Asahi Shimbun.
Scientists use night vision to help save bats' lives - GeoSpace
High-resolution radar and night vision cameras may help scientists protect bats from untimely deaths at wind farms, according to new research. Researchers are using these technologies to provide more specific details about the number of bats killed by wind turbines in Iowa. These details will improve scientists' understanding of bat activity and potentially save their lives, said Jing Teng, a graduate researcher at the University of Iowa who presented the work this week at the 2019 American Geophysical Union Fall Meeting in San Francisco. This work has broad impacts, according to Teng. "The more bats you kill, the more insects you have on farms; then, farmers will put more pesticides; and then, people will eat more pesticides," he said.
Arthur announces $3.3M seed to monitor machine learning model performance โ TechCrunch
Machine learning is a complex process. You build a model, test it in laboratory conditions, then put it out in the world. After that, how do you monitor how well it's tracking what you designed it to do? Arthur wants to help, and today it emerged from stealth with a new platform to help you monitor machine learning models in production. The company also announced it had closed a $3.3 million seed round, which closed in August.
Self-Driving Truck Hauls Refrigerated Trailer Cross Country Digital Trends
California-based startup Plus.ai claims to have completed a cross-country trip with a prototype autonomous truck. While a human backup driver and a safety engineer were onboard for the entire 2,800-mile trip, Plus.ai claims the truck was in autonomous mode most of the time. This wasn't just a test run, either: the truck hauled a refrigerated trailer loaded with cargo for Land O'Lakes. Perishable cargo gave Plus.ai an added incentive to ensure its tech worked. The company couldn't simply abort the trip, and a human driver taking over would have been a public relations nightmare.
Reskilling the UK in the face of AI growth
The need for reskilling and retraining due to the impact of artificial intelligence (AI) and automation technology will be massive, affecting more than 120 million workers across the world's 12 largest economies, according to IBM's Institute for Business Value. In a report entitled The enterprise guide to closing the skills gap, the institute indicated that while only 41% of employers have the required people, skills and resources in place to execute their business strategies effectively today, the situation will only get worse as demand for new โ particularly soft โ skills continues and expertise focused around repetitive, rules-based activities becomes progressively obsolete. "By 2030, the global talent shortage could reach more than 85 million people," the study says. "To be clear, the issue is not a shortage of workers, but a shortage of workers with the right skills." To make matters worse, although the so-called "half-life" of professional skills was formerly estimated at between 10 and 15 years, the half-life of a learned skill today is estimated to be a mere five years, and is potentially even less for technical expertise. So skills learned now will only be half as valuable in five years' time, which means that finding ways to continually update and refresh them will become an increasing imperative.
What Life Insurance Agents Should Know About AI and Digital Analytics ThinkAdvisor
Artificial intelligence is here, and here to stay. Whether you realize it or not, you feel its impact through the marketing appeals you receive online or in the mail; in the placement, packaging, and pricing of items in a supermarket; and in a myriad of other ways. AI is also embedded in life insurance operations, helping agents match products with prospective clients with a precision that was previously unimaginable. It's understandable, however, that some life agents might be apprehensive about the growth of AI in a field that prides itself on providing thoughtful, individualized solutions to the unique situation of each household. Things will certainly change as AI advances in life insurance, but agents that embrace AI and the changes it brings will actually find themselves to be more valuable to the carriers and customers who rely on them.
Argo takes different road to skirt self-driving challenges - Reuters
PITTSBURGH/DETROIT (Reuters) - Sky's the limit optimism about self-driving cars is giving way to tougher questions about how expensive automotive artificial intelligence will ever make a profit. Those are questions the founders of Argo AI - and automaker partners Ford Motor Co and Volkswagen AG (VOWG_p.DE) - are betting they can answer by taking a different road than more highly valued rivals. They are steering away from building a robotaxi fleet and focusing instead on getting paid by the mile by customers that will use robot vehicles for multiple purposes, including delivering goods or transporting groups of people in vans. The self-driving systems developer led by Bryan Salesky, who got his start developing automated vehicles for a Defense Department sponsored competition 12 years ago, is at the center of a multibillion-dollar bet by its auto giant partners that autonomous vehicle technology must be good for more than replacing taxi drivers. "I hate the word robotaxi," Salesky said in a rare interview at Argo's Pittsburgh headquarters.
Self-driving car firms rooted in U.S. government competition - Reuters
Twelve years later, even some of his former Carnegie Mellon University teammates have become business competitors of Salesky, who with CMU alumnus and faculty adviser Peter Rander founded Argo AI and went on to attract substantial investments from Ford Motor Co and Volkswagen AG (VOWG_p.DE). At the 2007 self-driving competition staged by DoD's Defense Advanced Research Projects Agency (DARPA) in remote Victorville, California, Salesky's CMU team and one from rival Stanford University included the future founders of at least four self-driving startups. Those competitors were Chris Urmson and Drew Bagnell of self-driving vehicle startup Aurora, Dave Ferguson of Nuro, Apex.ai's Jan Becker and Anthony Levandowski of Pronto.ai. Sebastian Thrun, who with Levandowski and Urmson helped build Google's self-driving business, also participated in the 2007 DARPA Urban Challenge, as did Dmitri Dolgov, who now heads engineering at Google's self-driving spinout Waymo.
What Drove The AI Renaissance?
It is the present-day darling of the tech world. The current renaissance of Artificial Intelligence (AI) with its sister discipline Machine Learning (ML) has led every IT firm worth its salt to engineer some form of AI onto its platform, into its toolsets and throughout its software applications. IBM CEO Ginni Rometty has already proclaimed that AI will change 100 percent of jobs over the next decade. And yes, she does mean everybody's job from yours to mine and onward to the role of grain farmers in Egypt, pastry chefs in Paris and dog walkers in Oregon i.e. every job. We will now be able to help direct all workers' actions and behavior with a new degree of intelligence that comes from predictive analytics, all stemming from the AI engines we will now increasingly depend upon.