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Don't Make Me Click By googletechtalks Google Tech Talks April, 2 2008 ABSTRACT What's made Google search, Facebook, the iPod, and Firefox household names? They all keep interaction to a minimum. The best presentation of content is the one which requires the least number of clicks and choices. Information overload is daunting: Few clicks and choices means more people stay and use your site. Avoiding interaction seduction allows you to create interfaces that are easier to learn and faster to use with surprisingly delightful interfaces. As an example, we'll see what Google search would have looked like if the Lobby For Advancement Of Carpal-Tunnel Syndrome had got their way. Speaker: Aza Raskin Aza gave his first talk on user interface at age 10 and got hooked. At 17, he was talking and consulting internationally; at 19, he coauthored a physics textbook because he was too young to buy alcohol; at 21, he started drinking alcohol and co-founded Humanized. Two years later, Aza founded Songza.com, a minimalist music search engine that had over a million song plays during it's first week of operation. After Humanized was sucked into Mozilla, Aza became Head of User Experience for Mozilla Labs. In another life, Aza has done Dark Matter research at both Tokyo University and the University of Chicago, from where he graduated with honors in math and physics. When not working (ha!) Aza enjoys playing music and punning. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 18 Downloads - Last from: (Your Blog here!) |
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Git By googletechtalks Google Tech Talks October, 12 2007 ABSTRACT When you have hundreds of people simultaneously patching 25000 files of the Linux Kernel in sometimes conflicting ways, you might need some scheme or plan to sort all that out before you can build your next kernel and reboot. The Linux team uses "git" for their source code repository management, a homegrown solution that is optimized for highly distributed development, working with huge sets of files, merging independent work at multiple levels, and seeing who broke what. (Git has also since been notably adopted by the Cairo, x.org, and Wine teams, and is being transitioned to by the Mozilla codebase.) In my talk, I describe what "git"; is and isn't, and why you should use it instead of CVS, Subversion, SVK, Arch, Darcs, Mercurial, Monotone, Bazaar, and just about every other repository manager. I'll also walk though the basic concepts so that the manpages might start making sense. If I have time, I'll even do a live walkthrough, where you can watch how fast I make typos. Speaker: Randal Schwartz Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 1 Downloads - Last from: http://techmale.com/2008/02/20/why-git/ (Your Blog here!) |
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Big Animals - How photography of big marine and land animals can improve our... By googletechtalks Google Tech Talks May, 8 2008 ABSTRACT Big animals - if we learn to love them and understand their survival - we will do everything to protect them. Professional marine and wildlife photographer Amos Nachoum will show his photos of large animals from around the world, talk about the process of taking these photos, show the equipment he uses, and describe why we should care about and protect these animals. Check out a preview of some of his stunning wildlife photos: http://www.corp.google.com/~sethml/am... This talk will be taped. Speaker: Amos Nachoum Professional Marine and Wildlife Photographer Amos Nachoum has led National Geographic expedition teams with Dr. Eugenie Clark, Dr. Sylvia Earle, astronaut Buzz Aldrin, and has co-produced documentaries with Stan Waterman. He was the team leader for National Geographic's Red Sea, Great White Shark, and November '96 Killer Whale photo expeditions. Mr. Nachoum's photos and essays have appeared in more than 500 publications in North America, Europe, and Japan, including National Geographic magazine, Ocean Realm, Island, Outside, Rodale's Scuba Diving, Time, Life, The New York Times, Condé Nast Traveler, Le Figaro, Terra Sauvage, Airone, and Mondo Somerso. Amos Nachoum - photographerIn addition, his work has been included in the books The Living Ocean, Oceans, and The World of Nature. He has been profiled in television appearances on National Geographic Explorer (Sept. '97), the Today Show, and Good Morning America, as well as in People, Esquire, and Money magazines. In 1988 he won Nikon's underwater photography contest and in 1993, the Communication Arts Award. He is currently an instructor on the Nikonos team of professional photographers and also conducts his own SLR and advanced u/w photo seminars. After spending three years circumnavigating the globe, Amos co-founded Israel's Marine National Park on the Red Sea. In 1978 he established La Mer Diving Seafari Inc, a New York-based adventure-travel company that brought North American divers to some of the most pristine and exotic underwater locations on the planet, from the Galapagos Islands to the Maldives, from Papua New Guinea to Madagascar and the Red Sea. In the course of directing these operations he has become an expert at working in partnership with foreign governments and companies to bring divers to some of the most beautiful and little-visited parts of the underwater realm, with preservation of the environment's integrity foremost in every encounter. Amos Nachoum - photographerSince 1992, Amos's efforts have been focused on professional commercial and editorial photography for such clients as the Israeli office of tourism, Saba Island, the governments of Australia, New Zealand, and Brazil, and large private clients ranging from Apple, IBM, and Microsoft to The Discovery Channel, Armani, the Walt Disney corporation, and Colombia Pictures. Arising from the belief that private individuals should have access to the same sights as governments and large corporations, Amos has developed the cutting-edge adventure-travel program Big Animals Photography Expeditions specifically to provide opportunities to observe, photograph, and interact with the most imposing inhabitants of the sea, such as great white sharks, killer whales, sperm and humpback whales, dolphins, and more. Only through such observation and interaction, Amos Nachoum believes, can people learn to truly understand and respect some of the most impressive citizens of our water planet. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 1 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Programming Bits and Atoms By googletechtalks Google Tech Talks October 24, 2008 ABSTRACT Computer science serves to isolate programs (and programmers) from knowledge of the underlying mechanisms used to manipulate information, however it will not be possible to maintain this fiction in the approaching limit in which the number of information-bearing degrees of freedom in a computer becomes comparable to the number of physical ones. I will explore the implications of aligning these physical and computational descriptions for improving the performance, scalability, and ultimately the relevance of information technologies for some of the grandest global challenges. Examples will be drawn from work on conformal computing, interdevice internetworking, and digital fabrication. Speaker: Neil Gershenfeld Prof. Neil Gershenfeld is the Director of MIT's Center for Bits and Atoms. His unique laboratory is breaking down boundaries between the digital and physical worlds, from creating molecular quantum computers to virtuosic musical instruments. Technology from his lab has been seen and used in settings including New York's Museum of Modern Art and rural Indian villages, the White House and the World Economic Forum, inner-city community centers and automobile safety systems, Las Vegas shows and Sami herds. He is the author of numerous technical publications, patents, and books including Fab, When Things Start To Think, The Nature of Mathematical Modeling, and The Physics of Information Technology, and has been featured in media such as The New York Times, The Economist, and the McNeil/Lehrer News Hour. He is a Fellow of the American Physical Society, and has been selected as a CNN/Time/Fortune Principal Voice and by Prospect/FP as one of the top 100 public intellectuals. Dr. Gershenfeld has a BA in Physics with High Honors and an honorary Doctor of Science from Swarthmore College, a Ph.D. from Cornell University, was a Junior Fellow of the Harvard University Society of Fellows, and a member of the research staff at Bell Labs. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 1 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Impulse-based ultra-wide-band (UWB) radio systems and applications By googletechtalks Google Tech Talks May 22, 2008 ABSTRACT The old idea of impulse radio dates back to Marconi's first wireless transmissions using sparks. Unlike most wireless today, impulse radio transmissions are extremely wideband signals. The recently FCC- released frequency band from 3.1GHz to 10.6GHz is the widest unlicensed frequency band ever released (7.5GHz). This ultra wide bandwidth (UWB) is commercially explored for even faster data transfer using traditional, multi-band (OFDM) RF techniques. However, the available bandwidth is wide enough for impulse radio transmission giving new functionality and new implementation challenges. In this talk I will show how power efficient impulse radio solutions are feasible in standard digital CMOS technology. Quite non-standard and untraditional design strategies must be used including time-domain signal processing. Circuit topologies for higher order Gaussian pulse generation and power efficient, correlating RAKE receivers will be explained. Impulse radio transmissions have additional interesting properties compared to narrowband modulation. With time-domain processing (TDOA) highly accurate positioning is feasible in the millimeter range. Improved sensitivity for robust communication. Large number of channels (greater than 100). Novel applications are also feasible using impulse transmission. Combining novel design techniques like "Swept-Threshold sampling" and digital lossless integration, micropower impulse radar is feasible in CMOS. A 60GHz sampler is used to accumulate and recover reflected electromagnetic energy. These new sensing devices (medical radar) may be explored for reading vital body signs (pulse, breathing, blood pressure?) embedded in your car seat or hospital emergency bed (detached sensor). Just imagine what you can do looking though heavy matter! Single chip CMOS impulse radar will be demonstrated at the end of the talk. Speaker: Tor Sverre Lande Tor Sverre (Bassen) Lande is a professor in Microelectronics at the Dept. of Informatics, Univ. of Oslo. From 2004 he is also serving as visiting professor at Institute of Biomedical Engineering, Imperial College, London, UK. His primary research is related to microelectronics, both digital and analog. Research fields are Neuromorphic Engineering, analog signal processing, micropower circuit design, biomedical circuits and systems and impulse radio. He is the author or co-author of more than 90 scientific publications with chapters in two books. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 2 Downloads - Last from: (Your Blog here!) |
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Marketing Talks at Google presents Matt Bailey By googletechtalks Google Tech Talks August 19, 2008 ABSTRACT Analytics Into Action Analytics according to Captain Kirk - The original Star Trek series explains many of the principles of analytics and the necessary tools for understanding visitor motivations, segments and website analysis. By looking deeper into the trekkie phenomenon, analysts can better understand how to make website data actionable and enjoyable. Speaker: Matt Bailey Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 2 Downloads - Last from: (Your Blog here!) |
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Personal Growth Series: Dr. William Dement on Healthy Sleep and Optimal Perfo... By googletechtalks Google Tech Talks September 23, 2008 ABSTRACT Under ordinary circumstances, healthy sleep is by far the most powerful determination of high-level performance and productivity. Three major characteristics must be present to define healthy sleep. They are (1) a sufficient amount and continuity to avoid sleep indebtedness, (2) absence or near absence of pathological sleep-related events and (3) reasonable synchronizing of desired time in bed with circadian predisposition. The nature of each of these three characteristics will be elaborated as well as their relation to performance. Speaker: Dr. William Dement William C. Dement, M.D., Ph.D., is the world's leading authority on sleep, sleep disorders, and the dangers of sleep deprivation. He is Chief of the newly created Division of Sleep at Stanford University School of Medicine, which is also the home of the world's first sleep disorders center founded by Dr. Dement. Born and raised in the state of Washington, Dr. Dement remained in his home state for his undergraduate years at the University of Washington. He then pursued his graduate studies at the University of Chicago, receiving his M.D. in 1955 and Ph.D. in Neurophysiology in 1957. For more than half a century, Dr. Dement has conducted basic sleep research, investigated sleep disorders and treatments, and has launched a myriad of public education programs. From 1953 to 1957, he conducted the first studies leading to the characterization of rapid eye movement (REM) sleep, the basic REM/NREM sleep cycle, and all night sleep patterns. In 1975, Dr. Dement founded the American Academy of Sleep Medicine serving as its President for twelve years. Dr. Dement was also a founder of the American Board of Sleep Medicine. From 1990-1993, he served as Chairman of the U.S. Congress's National Commission on Sleep Disorders Research. In 2001, he received the largest National Institute of Health research grant in sleep medicine history to establish the effectiveness and benefits of continuous positive air pressure (CPAP) treatment for large populations of patients with obstructive sleep apnea. As the author or co-author of over 500 scientific publications, Dr. Dement's research, findings, and advice can be found amongst several texts including his own, The Sleepwatchers, and most recently, The Promise of Sleep. He is also co-editor of the definitive textbook, Principles and Practice of Sleep Medicine, now in it's 4th edition. Dr. Dement's strong desire to educate students about sleep and the dangers of sleep deprivation led to the creation of his very popular course, "Sleep & Dreams," at Stanford University, which he has been presenting regularly for over 35 years. He will continue his efforts to educate the public and increase sleep awareness as long as he lives. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 1 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Greg Kroah Hartman on the Linux Kernel By googletechtalks Google Tech Talks June, 5 2008 ABSTRACT The Linux Kernel, who is developing it, how they are doing it, and why you should care. This talk describes the rate of development for the Linux kernel, and how the development model is set up to handle such a large and diverse developer population and huge rate of change. It will detail who is doing the work, and what companies, if any, are sponsering it. Finally, it will go into why companies like Google, and any other that uses or depends on Linux, should care about this development. Lots of numbers and pretty graphs will be shown to keep the audience awake. Speaker: Greg Kroah Hartman Greg Kroah-Hartman is a Linux kernel maintainer for the USB, driver core, sysfs, and debugfs portions of the kernel as well as being one half of the -stable kernel release team. He currently works for Novell as a Fellow doing various kernel related things and has written a few books from O'Reilly about Linux development in the past. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 1 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Balance, Stress, and Optimal Health By googletechtalks Google Tech Talks August 19, 2008 ABSTRACT Often acknowledged as one of the fathers of Mind/Body Medicine, Dr. Miller is a physician, poet, musician, and master storyteller, whose multicultural heritage has given him a unique social, medical, and spiritual perspective. His commitment to helping us to reclaim our inborn personal wisdom, integrated with the scientific knowledge and techniques of modern medicine, has allowed him to unite seemingly disparate fields of knowledge and experience. Dr. Miller brings us a deeper understanding of how the mind and body can work in harmony to produce healing, balance and wellness. Speaker: Dr. Emmett Miller www.drmiller.com Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 1 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Upcoming Changes to the JavaScript Language By googletechtalks Google Tech Talks November, 14 2007 ABSTRACT After eight years of work in the standards committee, JavaScript will soon get an update. We present the highlights and rationales of the proposed changes to JavaScript. The fourth edition of the ECMAScript (JavaScript) language represents a significant evolution of the third edition language, which was standardized in 1999. ES4 is compatible with ES3 and adds important facilities for programming in the large (classes, interfaces, namespaces, packages, program units, optional type annotations, and optional static type checking and verification), evolutionary programming and scripting, data structure construction, control abstraction (proper tail calls, iterators, and generators), and introspection. Improved support for regular expressions and Unicode, richer libraries, and proper block scoping are also added. Speaker: Waldemar Horwat Speaker: Pascal-Louis Perez Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 1 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Google TechTalk: "Как устроен Google". А. Бойцов By GoogleRU Google TechTalk, весна 2007 Артем Бойцов: "Как устроен Google" МЭИ, 26 апреля 2007 года Содержание: Как, когда и с какой миcсией создавался Google. Доступность и количество информации и способы её охвата компанией Google. Быстрый рост требований к вычислительным системам и их проектирование в компании Google. "История в картинках": как выглядит гугл "изнутри". Технологии увеличения производительности и отказоустойчивости системы в Google. Разработка продуктов в Google: инновационная система управления компанией 70/20/10 + 20%. О сегодняшнем дне компании и о том, как работается творческим увлеченным сотрудникам. Tags: google, techtalk, Россия, МЭИ, Как, Бойцов, устроен 2 Downloads - Last from: (Your Blog here!) |
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Google TechTalk: "Google, Интернет, Россия, Бизнес" В.Долгов By GoogleRU Google TechTalk, весна 2007 Владимир Долгов: "Google, Интернет, Россия, Бизнес" МФТИ, 3 апреля 2007 года Содержание: Введение, обзор лекции. Что есть Интернет, его развитие. Роль Сети в нашей жизни. История создания компании Google. "В поиске деньги есть!". Модель компании. "Гуглотрясение". Продукты Google: Spell Check, Google News, Google Translate, , Picasa, Desktop, Mobile, GTalk, Calendar, Google Apps и службы Google для вашего домена. Реклама и реклама в Интернет. История развития, тенденции. Особенности реклами в поисковых системах и партнерской сети. Подход Google к рекламе, рекламные продукты Google. AdWords, AsSense, Google Network. Партнерство - прежде всего. Принципы Google в рекламе. Как Google делает мир лучше - Book Search. Описание проекта. Tags: dolgov, google, mipt, russia, techtalk, Россия, МФТИ, Долгов 2 Downloads - Last from: (Your Blog here!) |
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Google TechTalk: "Как устроен Google". И. Кривоконь. Часть 1 By GoogleRU Google TechTalk, весна 2007 Игорь Кривоконь: "Как устроен Google" МФТИ, 6 марта 2007 года Часть 1 из 2 Содержание: Введение, обзор лекции. История создания Google, PageRank. Цели Google, мисия компании. Продукты Google. Создание масштабируемой архитектуры Google. Концепция вычислительных центров и серверы Google, их модификации и поколения. Вычислительная мощность, охлаждение и энергоснабжение: проблемы и их решения в Google. Использование солнечных батарей в Google. Система оповещения о сбоях аппаратного обеспечения. Файловая система Google - GFS: master и chunk servers. Преимущества GFS. Map/Reduce (модель параллельных вычислений). MapReduce (пример работы). BigTable (распределенное хранение структурированных данных). Безотказность систем Google, удобство в процессе разработки новых проектов. Методология разработки software. Продукты Google. Google Book Search, здесь же роботы с присосками и способы сканирования книг. Tags: google, techtalk, Россия, Как, Кривоконь, устроен 2 Downloads - Last from: (Your Blog here!) |
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Google TechTalk: "Особенности поисковых систем". А.Грушецкий By GoogleRU Google TechTalk, весна 2007 Александр Грушецкий: "Особенности поисковых систем" ЛЭТИ, 15 марта 2007 года Содержание: Введение, обзор. Немного истории компании Google. Основные компоненты поисковых систем. История возникновения поисковых систем. Основные подходы. Анализ ссылок. Page Rank Пользовательский интерфейс. Что любят пользователи в поисковых системах. Резюме: "ингридиенты" поисковых систем Масштабируемость системы, ключевые особенности Google Параллелизация обработки запросов, shard'инг. "Жизнь" поискового запроса Очень сложная проблема: угадать, что нужно пользователю. Исправление запроса, орфография, морфология, Многоязычность поисковых систем. Страны и Google. Поиск и деньги. Реклама в поисковых системах. "Поисковые войны", борьба со спамерами. "Google bomb". "Последние мысли". Tags: google, grushetskiy, leti, techtalk, Россия, Поисковые, Грушецкий, ЛЭТИ, системы 2 Downloads - Last from: (Your Blog here!) |
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Google TechTalk: "Интернет сегодня". E.Соколов By GoogleRU Google TechTalk, осень 2007: Константин Кузьмин: "Интернет сегодня и немного о MapReduce" МИИТ, 4 октября 2007 года Tags: google, map, mapreduce, reduce, techtalk, Соколов, МИЭМ, Интернет, сегодня 2 Downloads - Last from: (Your Blog here!) |
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Artificial intelligence and digital media By googletechtalks Google Tech Talks February, 22 2008 ABSTRACT By using parameterization methods which model the knowledge space of a social or cognitive process, it is possible to use artificial intelligence techniques such as Neural Networks and Genetic Programming to create new types of visualization, creation, search and expression for a range of digital media. Steve DiPaola will discuss and demonstrate his research in cognitive 3D and 2D graphics, AI and simulation work, including real-time voice- and behavior-based 3D facial communication, simulated critters (an interacting group of whales) and creative exploration over optimized search as well as cognitively-based computational photography and music. (See ivizlab.sfu.ca). Speaker: Steve DiPaola Artist and scientist Steve DiPaola is a professor at Simon Frazier University. He directs iVizLab, which strives to make interactive and simulation systems bend more to the human experience by incorporating biological and cognitive models. He came to SFU from Stanford and NYIT CGL and has held leadership positions at Electronic Arts, Saatchi Innovation and Silicon Valley start-ups. His art has been exhibited internationally, at venues including the AIR and Tibor de Nagy galleries in NYC, the Whitney Museum and the Smithsonian. He has collaborated with Nam June Paik and Kraftwerk and is known for making new media tools used equally by artists and scientists. (See dipaola.org). Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 7 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Challenges in Causality By googletechtalks Google Tech Talks February, 11 2008 ABSTRACT What affects your health, the economy, climate changes? And what actions will have beneficial effects? These are some of the central questions of causal discovery. A "causal model" is a model capable of making predictions under changing circumstances, corresponding to actions of "external agents" on a system of interest. For example, a doctor administering a drug to a patient, a government enforcing a new tax law or a new environmental policy. It is often necessary to assess the benefits and risks of potential actions using available past data and excluding the possibility of experimenting. Experiments, which are the ultimate way of verifying causal relationships, are in many cases too costly, infeasible, or unethical. For instance, enforcing a law prohibiting to smoke in public places is costly, preventing people from smoking may be infeasible, and forcing them to smoke would be unethical. In contrast, "observational data" are available in abundance in many applications. Recently, methods to devise causal models from observational data have been proposed. Can causal models thus obtained be relied upon to make important decisions? In this presentation, we will challenge the hopes an promises of causal discovery and present new means of assessing the validity of causal modeling techniques. Want to play? Check the "causation and prediction" competition presently going on: http://www.causality.inf.ethz.ch/chal... Deadline April 30, 2008 Speaker: Isabelle Guyon Isabelle Guyon is a researcher in machine learning and an independent consultant. Prior to starting her consulting practice in 1996, she worked at AT&T Bell Laboratories, where she pioneered applications of neural networks to pen computer interfaces and invented Support Vector Machines (in collaboration with B. Boser and V. Vapnik). Isabelle Guyon holds a Ph.D. degree in Physical Sciences of the University Pierre and Marie Curie of Paris, France. She is vice-president of the Unipen foundation, action editor of the Journal of Machine Learning Research, and competition chair of the IJCNN conference. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 3 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Rapid Prototyping of Ubiquitous Computing Applications: Tools & Frameworks By googletechtalks Google Tech Talks March, 24 2008 ABSTRACT Yang Li - RESEARCH SCIENTIST Pervasive or ubiquitous computing (ubicomp) applications can support people's everyday activities in the physical world by leveraging advances in sensor technologies and computing infrastructures. Designing ubicomp applications is challenging because our everyday activities are more complex, dynamic and less structured than the tasks supported by traditional desktop computing. Ubicomp design is difficult, time-consuming, and requires a high level of technical expertise, especially with sensor technologies. To address this, I created a set of rapid prototyping tools and frameworks. My early work with Topiary introduces high-level abstractions, such as maps and scenarios, for designers to easily model location contexts and specify location-based behaviors. Topiary also allows a design to be tested in the field via a Wizard of Oz approach, without deploying a location sensor infrastructure. My recent work is focused on activity-based ubicomp prototyping, a process for enabling long-term activities (such as keeping fit)—a larger unit for design than the tasks that are the focus of traditional design. To support such a process, I created ActivityDesigner, a system that allows designers to create functional prototypes of ubicomp applications based on field observations, and easily deploy and test these prototypes in situ. Speaker: Yang Li - RESEARCH SCIENTIST Yang Li is a research associate in the Computer Science and Engineering Department at the University of Washington. He works in the areas of human-computer Interaction and ubiquitous computing, focusing on activity-based ubiquitous computing, rapid prototyping tools and pen-based interaction techniques. Previously, he was a postdoctoral researcher in EECS at the University of California at Berkeley. He received his PhD in computer science from the Chinese Academy of Sciences. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 2 Downloads - Last from: http://downthisvideo.com/ (Your Blog here!) |
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Quantum Computing Day 1: Introduction to Quantum Computing By googletechtalks Google Tech Talks December, 6 2007 ABSTRACT This tech talk series explores the enormous opportunities afforded by the emerging field of quantum computing. The exploitation of quantum phenomena not only offers tremendous speed-ups for important algorithms but may also prove key to achieving genuine synthetic intelligence. We argue that understanding higher brain function requires references to quantum mechanics as well. These talks look at the topic of quantum computing from mathematical, engineering and neurobiological perspectives, and we attempt to present the material so that the base concepts can be understood by listeners with no background in quantum physics. This first talk of the series introduces the basic concepts of quantum computing. We start by looking at the difference in describing a classical and a quantum mechanical system. The talk discusses the Turing machine in quantum mechanical terms and introduces the notion of a qubit. We study the gate model of quantum computing and look at the famous quantum algorithms of Deutsch, Grover and Shor. Finally we talk about decoherence and how it destroys superposition states which is the main obstacle to building large scale quantum computers. We clarify widely held misconceptions about decoherence and explain that environmental interaction tends to choose a basis in state space in which the system decoheres while leaving coherences in other coordinate systems intact. Speaker: Hartmut Neven Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 2 Downloads - Last from: (Your Blog here!) |
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Making the Semantic Web Accessible to the Casual User By googletechtalks Google Tech Talks June, 26 2008 ABSTRACT The Semantic Web presents the vision of a distributed, dynamically growing knowledge base founded on formal logic. Common users, however, seem to have problems even with the simplest Boolean expression. So how can we help users to query a web of logic that they do not seem to understand? One frequently proposed solution to address this problem is the use of natural language (NL) for knowledge specification and querying. We propose to regard formal query languages and NL as two extremes of a continuum, where semistructured languages lie somewhere in the middle. To evaluate what degree of structuredness casual users prefer, we introduce four query interfaces, each at a different point in the continuum, and evaluate the users' preference and their query performance in a study with 48 subjects. The results of the study reveal that while the users dislike the constraints of a fully structured formal query language they also seem at a loss with the freedom of a full NLP approach. This suggests that restricted query languages will be preferred by casual users because of their guidance effect, mirroring findings from social science theory on human activity in general. Speaker: Prof. Bernstein Abraham Bernstein is a full Professor at the Department of Information Technology (Institut für Informatik) of the University of Zurich. He conducts research on various aspects of supporting dynamic (intra- and inter-) organizational processes. His work draws from both social science (organizational psychology/sociology) and technical (computer science, artificial intelligence) foundations. Before coming to Zurich he was an Assistant Professor, at the Information Systems Department in New York University's Stern School of Business, and received a Ph.D. at MIT's Sloan School of Management, where he worked with Prof. Thomas W. Malone at the Center for Coordination Science. Tags: education, engedu, google, googletechtalks, talk, talks, techtalk, techtalks 2 Downloads - Last from: (Your Blog here!) |
