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In this dissertation I (Jeff Clune) investigate the difference between generative encodings and direct encodings for evolutionary algorithms. Generative encodings are inspired by developmental biology and were designed, in part, to increase the regularity of synthetically evolved phenotypes. Regularity is an important design principle in both natural organisms and engineered designs. The majority of this dissertation focuses on how the property of regularity enables a generative encoding to outperform direct encoding controls, and whether a bias towards regularity also hurts the performance of the generative encoding on some problems. I also report on whether researchers can bias the types of regularities produced by a generative encoding to accommodate user preferences. Finally, I study the degree to which a generative encoding produces another important design principle, modularity.Several previous studies have shown that generative encodings outperform direct encodings on highly regular problems. However, prior to this dissertation, it was not known how generative encodings compare to direct encodings on problems with different levels of regularity. On three different problems, I show that a generative encoding can exploit intermediate amounts of problem regularity, which enabled the generative encoding to increasingly outperform direct encoding controls as problem regularity increased. This performance gap emerged because the generative encoding produced regular artificial neural networks (ANNs) that produced regular behaviors. The ANNs evolved with the generative encoding contained a diverse array of complicated, regular neural wiring patterns, whereas the ANNs produced by a direct encoding control were irregular.I also document that the bias towards regularity can hurt a generative encoding on problems that have some amount of irregularity. I propose a new algorithm, called HybrID, wherein a generative encoding produces regular patterns and a direct encoding modifiesthose patterns to provide fitness-enhancing irregularities. HybrID outperformed a generative encoding alone on three problems for nearly all levels of regularity, which raises the question of whether generative encodings may ultimately excel not as stand-alone algorithms, but by being hybridized with a further process of irregular refinement.The results described so far document that a generative encoding can produce regular solutions. I then show that, at least for the generative encoding in this case study, it is possible to influence the types of regularities produced, which allows domain knowledge and preferences to be injected into the algorithm. I also investigated whether the generative encoding can produce modular solutions. I present the first documented case of this generative encoding producing a modular phenotype on a simple problem. However, the generative encoding's inability to create modularity on harder problems where modularity would have been beneficial suggests that more work is needed to increase the likelihood that this encoding produces modular ANNs in response to challenging, decomposable problems.Overall, this dissertation paints a more complete picture of generative encodings than prior studies. Initially, it demonstrates that, by producing regular ANNs and behaviors, generative encodings increasingly outcompete direct encodings as problem regularity increases. It next documents that a bias towards regularity can harm the performance of direct encodings when problems contain irregularities. The HybrID algorithm suggests a path forward, however, by revealing that a refinement process that fine-tunes the regular patterns produced by a generative encoding can boost performance by accounting for problem irregularities. Finally, the dissertation shows that the generative encoding studied can produce modular networks on simple problems, but may struggle to do so on harder problems. The general conclusion that can be drawn from this work is that generative encodings can produce some of the properties seen in complex, natural organisms, and will likely be an important part of our long-term goal of synthetically evolving phenotypes that approach the capability, intelligence, and complexity of their natural rivals.
Chris Baty founded National Novel Writing Month, the largest writing event in the world, in 1999. Nearly 500,000 people sign up each year to write novels and realize their creative dreams. He's published several books on his unique brand of creativity, including No Plot, No Problem, and Ready, Set, Novel. Additionally, his work has appeared in such publications as the Washington Post, The Believer, and AFAR. He lives in Berkeley, California, where he works as a teacher, speaker, and writer.No Plot, No Problem:Always wanted to write a novel? Short on time or inspiration? Surrounded by angry marmots and need something to throw at them? This is the book for you. Chris has completely revised and expanded his definitive handbook for extreme noveling, No Plot, No Problem, which will be released this September. Chris pulls from over 15 years of results-oriented writing experience to pack this compendium with new tips and tricks, ranging from week-by-week quick reference guides to encouraging advice from authors, and much more. His motivating mix of fearless optimism and practical solutions to common excuses gives both first-time novelists and results-oriented writers the kick-start they need to embark on an exhilarating creative adventure.
NOTE FROM TED: This talk, which was filmed at a TEDx event, contains several assertions about Ayurveda and ancient healing that are not supported by the scientific community. While some viewers might find advice provided in this talk to be helpful as a complementary approach, please do not look to this talk for medical advice. TEDx events are independently organized by volunteers. The guidelines we give TEDx organizers are described in more detail here: if someone you love is struggling with a major problem and you don't know how to help them? In this inspiring and fascinating talk, Dr. Clint Rogers begins by asking "What is Wisdom?" To help answer that question, Clint shares 3 remarkable experiences he had with Dr. Pankaj Naram, a master healer from an ancient Himalayan tradition, reveals limitless benefits and possibilities from 6 instruments outlined in the ancient science of Siddha-Veda, and ends with 3 questions which could change your life forever.Clint Rogers, Ph.D., is CEO of the organization calledWisdom of the World - looking for the best things thatexist on the planet and how more people can benefitfrom them.As a university researcher and author of upcoming book“Ancient Secrets of a Master Healer: A Western Skeptic,An Eastern Master, and Life’s Greatest Lessons”, Clint hasstudied intensively for the last 7 years with Master HealerDr. Pankaj Naram and the Siddha-Veda healing lineageof the Himalayas. Clint has documented and capturedtheir secrets on how anyone can live to more than 100years with vibrant health, unlimited energy, and peace ofmind - and will demonstrate instant and limitless benefitsfor you in following the 6 instruments of Siddha-Veda. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at
This talk was given at a local TEDx event, produced independently of the TED Conferences. Litan's talk explores the surprising role economists have played in the development of the internet economy -- and quite possibly your love life. As an economist and attorney, Litan has had nearly four decades of experience in the worlds of the law, economic research and policy, and as an executive in the private, public and government sectors. He has directed economic research at three major organizations – The Brookings Institution, The Kauffman Foundation and Bloomberg Government – and authored or co-authored 27 books on a variety of economic topics. His most recent book, “The Trillion Dollar Economists,” will be published by Wiley Press this September. Litan currently is a non-resident senior fellow at Brookings; counsel to Korein Tillery, a law firm based in St. Louis and Chicago specializing in large case litigation; chief economist at Main Street Genome, a D.C.-based startup providing financial analytics to small businesses; and a regular contributor to the Think Tank blog published by The Wall Street Journal.About TEDx, x = independently organized event In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
Dr. Parr Rosson, department head of the department of Agricultural Economics, takes a moment to welcome website visitors and to introduce the department to viewers.
Episode 14 of 'Did It Fail?'Diving into the aftermath of Prey➥Subscribe Here: ➥Support Us On Patreon: ➥Follow on Twitter: email@example.com (Send your questions for Q&A videos here)We chat about Prey, Bethesda & Arkane Studios, and a whole lot more in this episode!-------------Data Sources:player count data:footage courtesy of:Tetraninja (for watching!
.Visit us at: provide start-up and licensing assistance for the personal care home, companion care business, home care, adult group homes,home and adult day program…indeed you have come to the right experts.Moreover, we provide Administrator Certification for new providers, annual re-certification for existing providers and a whole host of other essential services to help strengthen the professional you are.Training and development is another one of our specialty areas.Employees and providers are required to receive initial, annual training and professional development in key areas prior to and during employment and starting a personal care business.This is to ensure that those servicing these special populations have the proper skill set to handle challenging behaviors in the safest manner possible.We also provide an array of services essential to ensuring compliance in just about every service area among most personal care businesses. These compliance services includes progress note audits, progress note dictation, medical record review, monitoring and oversight, environmental inspections, HRST update, employee and resident record audits and resolving corrective action plans.Here are just some of the businesses we develop:Residential Care FacilitiesAdult Foster HomesHome Health AgenciesHome Care AgenciesTransportation CompaniesPersonal Care HomesDurable Medical Equipment CompaniesChildren Foster HomesMemory Care HomeMedically Fragile Residential CareVisit our website to schedule a free consultation or call 800.214.2611.Visit:
Written language, the hallmark of human civilization, didn't just suddenly appear one day. Thousands of years before the first fully developed writing systems, our ancestors scrawled geometric signs across the walls of the caves they sheltered in. Paleoanthropologist and rock art researcher Genevieve von Petzinger has studied and codified these ancient markings in caves across Europe. The uniformity of her findings suggest that graphic communication, and the ability to preserve and transmit messages beyond a single moment in time, may be much older than we think.TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more.Find closed captions and translated subtitles in many languages at TED news on Twitter: TED on Facebook: to our channel:
(Visit: Michael F. Holick, PhD MD, Boston University Medical Center gives an energetic talk on the positive impacts of sunlight on your health. How can we balance current thinking on the negative effects of sun exposure with new research on its benefits? How does sunlight help in the production of vitamin D? Join Dr. Holick as he explains how sunlight reaches us, how it is absorbed by the skin and much more.Recorded on 12/09/2014. Series: "Vitamin D for Public Health - Integrating Sunshine, Supplements and Measurement for Optimal Health 2014" [2/2015] [Health and Medicine] [Show ID: 29075]