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Linus Torvalds visits Google to share his thoughts on git, the source control management system he created two years ago.

Google Tech Talks October, 30 2007 ABSTRACT After three years of research and development on a distributed storage system, we are ready to unveil the result: Wuala. Wuala is a new way of storing, sharing, and publishing files on the internet. Unlike traditional online storage systems, Wuala is decentralized and can harness idle resources of participating computers to build a large, secure, and reliable online storage. This enables its users to trade parts of their local storage for online storage and it allows us to provide a better service for free. In the talk, I will explain what Wuala is and how it works, and I will also show a demo. All attendees will also get an invitation code to join the early alpha version. Speaker: Dominik Grolimund I am 26 years old and have studied computer science at ETH Zurich. In 1998, I founded my software company Caleido, and developed the Caleido Address-Book, a professional contact management software, of which over 35'000 licenses have been sold so far in Switzerland, Germany and Austria. In 2003, I did an exchange semester at the TU Delft, the Netherlands, as part of the Unitech exchange program, focusing on business and management. In 2004, a six-month internship followed with Siemens Corporate Research in Princeton, New Jersey in the US, where I worked in the 'Intelligent Vision & Reasoning' department, developing a prod...

Google Tech Talks October, 23 2007 ABSTRACT For most of us who work on the Internet, the Web is all we have ever really known. It's almost impossible to imagine a world without browsers, URLs and HTTP. But in the years leading up to Tim Berners-Lee's world-changing invention, a few visionary information scientists were exploring alternative systems that often bore little resemblance to the Web as we know it today. In this presentation, author and information architect Alex Wright will explore the heritage of these almost-forgotten systems in search of promising ideas left by the historical wayside. The presentation will focus on the pioneering work of Paul Otlet, Vannevar Bush, and Doug Engelbart, forebears of the 1960s and 1970s like Ted Nelson, Andries van Dam, and the Xerox PARC team, and more recent forays like Brown's Intermedia system. We'll trace the heritage of these systems and the solutions they suggest to present day Web quandaries, in hopes of finding clues to the future in the recent technological past. Speaker: Alex Wright Alex Wright is an information architect at the New York Times and the author of Glut: Mastering Information Through the Ages. Previously, Alex has led projects for The Long Now Foundation, California Digital Library, Harvard University, IBM, Microsoft, Rollyo and Sun Microsystems, among others. He maintains a personal Web site at http://www.alexwright.org/

Google Tech Talks October 27, 2008 ABSTRACT Factor is a general-purpose programming language which has been in development for a little over five years and is influenced by Forth, Lisp, and Smalltalk. Factor takes the best ideas from Forth -- simplicity, succinct code, emphasis on interactive testing, meta-programming -- and brings modern high-level language features such as garbage collection, object orientation, and functional programming familiar to users of languages such as Python and JavaScript. Recognizing that no programming language is an island, Factor is portable, ships with a full-featured standard library, deploys stand-alone binaries, and interoperates with C and Objective-C. In this talk, I will give the rationale for Factor's creation, present an overview of the language, and show how Factor can be used to solve real-world problems with a minimum of fuss. At the same time, I will emphasize Factor's extensible syntax, meta-programming and reflection capabilities, and show that these features, which are unheard of in the world of mainstream programming languages, make programs easier to write, more robust, and fun. Speaker: Slava Pestov Slava was born in the former USSR and emigrated to New Zealand at the age of 7. He moved to Ottawa, Canada when he was 18 to study for a Bachelors and Masters degree in Mathematics. He now resides in Minneapolis, Minnesota. An early adopter of Java, Slava wrote the popular jEdit text editor, then went on to design and implement the Factor programming language. At his day job he hacks on web apps, optimizing compilers, garbage collectors, and everything in between.

Google Tech Talks August 30, 2007 ABSTRACT Quicksilver hides almost unbounded power beneath the interface of a keyboard-driven launcher. Using a basic grammatical model, it allows you to move beyond basic search and work effortlessly with applications, data, and the web. Quickilver is above all a prototype intended to explore new forms of interaction. In this talk, we will explore the motivation behind Quicksilver, highlights of its implementation, lessons learned from its design, and the ways it might inform the future of navigation for the desktop and the web. Speaker: Nicholas Jitkoff Credits: Speaker:Nicholas Jitkoff

川合史朗さんが彼のScheme処理系、Gaucheについて話します。

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

Google Tech Talks August 5, 2008 ABSTRACT Estimating geographic information from an image is an excellent, difficult high-level computer vision problem whose time has come. The emergence of vast amounts of geographically-calibrated image data is a great reason for computer vision to start looking globally on the scale of the entire planet! In this paper, we propose a simple algorithm for estimating a distribution over geographic locations from a single image using a purely data-driven scene matching approach. For this task, we will leverage a dataset of over 6 million GPS-tagged images from the Internet. We represent the estimated image location as a probability distribution over the Earth's surface. We quantitatively evaluate our approach in several geolocation tasks and demonstrate encouraging performance (up to 30 times better than chance). We show that geolocation estimates can provide the basis for numerous other image understanding tasks such as population density estimation, land cover estimation or urban/rural classification. Speaker: James Hays James Hays received his B.S. in Computer Science from Georgia Institute of Technology in 2003. He has been a Ph.D. student in Carnegie Mellon University's Computer Science Department since 2003 and is advised by Alexei A. Efros. His research interests are in computer vision and computer graphics, focusing on image understanding and manipulation leveraging massive amounts of data. His research has been supported by a National Science Foundation Graduate Research Fellowship.

Google Tech Talks June 14, 2008 ABSTRACT CARMEN is a $9M project building a scalable science cloud. Its focus is on supporting neuroscientists who will use it to store, share and analyze 100s of TBs of data. Understanding how the brain works is a major scientific challenge which will benefit medicine, biology and computer science. Globally, over 100,000 neuroscientists are working on this problem. However, the data that forms the basis for their work is rarely shared even though it is difficult and expensive to produce. The CARMEN project (www.carmen.org.uk) is addressing these challenges by developing a scalable cloud architecture to enable data sharing, integration, and analysis supported by metadata. An expandable range of services are provided in the cloud to extract value from raw and transformed data. This promotes the sharing of analysis services as well as data, and allows services to execute close to the data on which they operate. This is essential to avoid having to ship vast quantities (TBs) of data out of the cloud to the user's machine for analysis. Internally, the CARMEN cloud is built as a set of Web Services. Through experience of a wide variety of e-scientific projects over the past 8 years, we have identified a core set of generic services that we believe are needed to support science. These services, their scalability issues and novel features are: - Data repository. Most of the primary data is time series signal data. Searching for patterns (such as neuronal spikes) is a key requirement. CARMEN uses a novel parallel search infrastructure to find patterns quickly, even in vast quantities of data. - Metadata repository. Users need to be able to quickly search metadatametdata describing tens of thousands of datasets in order to locate data that is of interest. Ontologies are used to structure experimental metadata, and techniques are needed to quickly search this type of data. - Service repository and dynamic deployment. A novel feature of the architecture is that the analysis services are stored in a repository in the cloud. Users can write services in a variety of languages, package them as web services and then upload them into the cloud. These are then dynamically deployed on compute nodes as required to meet user requests. - Workflow Enactment Engine. Users can build workflows from the available services in order to orchestrate the entire process of analysis. These are then executed in the cloud. - Security. Scientists wish to control precisely who has access to their data and services. This service ensures that these desires are met. The talk will describe the design of the CARMEN system and show how it addresses the key scalability issues. It will cover the cloud services, explaining how each is designed to scale up to support thousands of users analysing TBs of data. We will present results from the CARMEN prototype to illustrate solutions and issues. Speaker: Paul Watson Paul Watson is Professor of Computer Science and Director of the North East Regional e-Science Centre. He graduated in 1983 with a BSc (I) in Computer Engineering from Manchester University, followed by a PhD in 1986. In the 80s, as a Lecturer at Manchester University, he was a designer of the Alvey Flagship and Esprit EDS systems. From 1990-5 he worked for ICL as a system designer of the Goldrush MegaServer parallel database server, which was released as a product in 1994. In August 1995 he moved to Newcastle University, where he has been an investigator on research projects worth over $20M. His research interests are in scalable information management, in particular parallel database systems and data-intensive e-science. Slides for this talk are available at http://groups.google.com/group/seattle-scalability-conference

Google Tech Talks February, 20 2008 ABSTRACT Ruby 1.9 Speaker: Yukihiro Matsumoto Yukihiro Matsumoto (Matsumoto Yukihiro, a.k.a. Matz, born 14 April 1965) is a Japanese computer scientist and software programmer best known as the chief designer of the Ruby programming language. He was born in Osaka Prefecture, in western Honshu. According to an interview conducted by Japan Inc., he was a self-taught programmer until the end of high school. He graduated with an information science degree from Tsukuba University, where he associated himself with research departments dealing with programming languages and compilers. As of 2006, Matsumoto is the head of the research and development department at the Network Applied Communication Laboratory, an open source systems integrator company in Shimane prefecture. He is a member of The Church of Jesus Christ of Latter-day Saints and served as a missionary for the church. Matsumoto is married and has four children. http://en.wikipedia.org/wiki/Yukihiro_Matsumoto

Google Tech Talks November, 12 2007 ABSTRACT Please welcome Håkon Lie and Michael Day, who will be presenting Prince XML. Prince Overview: Prince is a computer program that converts XML and HTML into PDF documents. Prince can read many XML formats, including XHTML and SVG. Prince formats documents according to style sheets written in CSS. Dynamic data-driven documents: Prince is an ideal printing component for server-based software such as web applications and database systems. Using Prince, data in XML can easily be converted to PDF documents that can be printed, archived or downloaded over the web. Electronic publishing: Prince can also be used by authors and publishers to typeset and print documents written in HTML, XHTML or one of the many XML-based document formats. Prince is capable of formatting academic papers, scientific journals, novels, and books with extensive illustrations. Speaker: Håkon Wium Lie Håkon Wium Lie, YesLogic Director: Håkon is a web pioneer, having proposed CSS while working with Tim Berners-Lee at CERN in 1994. Håkon became a devotee when he found that Prince could format his book on CSS (co-authored with Bert Bos) and his PhD thesis. Håkon is a graduate of MIT's Media Lab and is also the CTO of Opera Software. Speaker: Michael Day Michael Day, YesLogic CEO: Michael is the system architect for Prince. He has implemented the CSS processing module, which supports many pioneering CSS features including CSS3 Selectors and Paged Media properties. In 2003, he joined the W3C CSS working group as an invited expert.

Google Tech Talks June, 11 2008 ABSTRACT Kilim: Fast, lightweight, cheap message passing in Java. A million actors, 3x faster than Erlang. The message passing (MP) paradigm is often seen as a superior alternative to the typical mix of idioms in concurrent (shared-memory, locks) and distributed programming (CORBA/RMI). MP eliminates worries endemic to the shared-memory mindset: lock ordering, failure-coupling, low-level data races and memory models. It simplifies synchronization between data and control planes (no lost signals or updates), and unifies APIs for local and remote process interaction. Curiously however, there are no efficient frameworks for intra-process message-passing, except for Erlang. This talk describes a Java framework called "Kilim" to fix this state of affairs. Kilim provides: 1. Extremely lightweight user-level threads (actors) with automatic stack management, obtained via CPS transformation. 2. A simple type system that ensures actor isolation by controlling pointer aliasing in messages at compile time, and by ensuring linear ownership of mutable message objects. This permits safe, zero-copy communication. 3. A compact run-time library containing typed mailboxes (with optional flow control), user-definable scheduling and python style generators. Kilim is portable; one of our explicit goals was to not require changes to the Java language syntax or to the JVM. Kilim scales comfortably to handle hundreds of thousands of actors and messages on modest hardware. It is fast as well -- task-switching is 1000x faster than Java threads and 60x faster than other lightweight tasking frameworks, and message-passing is 3x faster than Erlang (currently the gold standard for concurrency-oriented programming). Speaker: Sriram Srinivasan Sriram Srinivasan has 19 years of experience delivering a variety of systems spanning wireless sensors, messaging systems, middleware (he was a principal engineer of the Weblogic Application server) and large-scale applications such as cargo planning systems and network management systems. He is currently on leave from industry, pursuing a PhD at the University of Cambridge. He is interested in mixing programming languages, concurrenct & distributed systems and modal logics.

Google Tech Talks October 20, 2008 ABSTRACT In this talk we will explore a few of the open source projects we work on here at Engine Yard. I will give a detailed overview of the Merb web framework and what it brings to the table. We will also discuss Rubinius, an alternate ruby VM based on SmallTalk 80 blue book that also uses LLVM for low level optimizations. We will also explore the 'stack' we are working on at EY which includes our own variant of Gentoo linux as well as a full stack of software dedicated to running ruby applications as efficiently as possible. Merb, like Ruby on Rails is an MVC framework. Unlike Rails, Merb is ORM-agnostic, JavaScript library agnostic, and template language agnostic, preferring plugins that add in support for a particular feature rather than trying to produce a monolithic library with everything in the core. While trying to keep the core as minimal and clean as possible, this hasnt meant a sacrifice of features. Merb has a very comprehensive set of features, which are continually improving. Rubinius is a project to develop the next generation virtual machine for the Ruby programming language, drawing on the best virtual machine research and technology of the last 30 years. It implements the core libraries in Ruby, making a system easily accessible for development and extension. Rubinius is also an excellent platform for experimenting with cutting-edge technology like software transactional memory. Speaker: Ezra Zygmuntowicz Lead contributor to the Merb framework and is a co-founder of EngineYard.com, a scalable Rails hosting service, Ezra is the author of the Rails Deployment book for the Pragmatic programmers and has contributed many open source Ruby and Rails related projects such as BackgrounDrb, ez-where, Merb and Rubinius. He was a speaker at The Rails Edge, the 2006, 2007 & 2008 RailsConf and the 2007 SDForum Ruby conference as well as The Ruby Hoedown and RubyEast. He will also be a Keynote speaker at the upcoming Merbcamp (www.merbcamp.com) on October 11-12th in San Diego, CA.

Gerd Leonhard is a Music & Media Futurist, Author, Speaker, Advisor, and Digital Media Entrepreneur. The Wall Street Journal calls Gerd one of the leading media futurists in the world. He is the Co-Author of the influential book "The Future of Music" (2005, Berklee Press), as well as the author of "Music2.0" (released 2/2008 www.music20book.com), and of "Open is King - The Future of Media beyond Control" (late 2008).

Google Tech Talks May, 23 2008 ABSTRACT Overview: Mark Birbeck has spent a number of years working on flexible user interfaces, both by developing software and working with the W3C on new standards. His latest work involves creating an Ajax framework that uses metadata embedded in HTML documents to drive dynamic user interfaces. The framework makes it easy for authors to build interactive sites, whilst still creating accessible, searchable documents. In this talk Mark will look at how embedded metadata can be used by anyone from scientific researchers to bloggers, through news organisations to photographers, to improve how their pages are understand and interacted with. Speaker: Mark Birbeck Mark Birbeck devised RDFa, a new standard from the W3C that allows metadata to be embedded in HTML and XHTML documents, rather than being stored separately. Web pages enriched in this way provide more accurate information for use in search engines, as well as creating enormous potential for building a new generation of interactive tools for the end-user. Mark is also involved in the XForms Working Group and the XHTML 2 Working Group, has contributed to books on XML and RDF, blogs regularly about XForms, the semantic web, and RIAs, and his company, webBackplane develops a range of open source software for semantic-driven user interfaces. His profile is at http://webBackplane.com/mark-birbeck.

Google Tech Talks June 24, 2008 ABSTRACT Eclipse Day at the Googleplex Wiring Hacker Synapses: Collaborative Coding and Team Tooling in Eclipse by Scott Lewis, Composent & Mustafa K. Isik ECF is a communication framework and an increasing set of integrated tools. ECF provides APIs useful for the development of Equinox-based servers, RCP applications, and Eclipse-based development tools. The provider architecture supports the use of existing communications services, such as Google Talk and UI integration with web-based services, and other Eclipse-based tools. For example, for the upcoming Ganymede release, ECF is working on real-time shared editing of source code to support distributed team use cases like code reviews and collaborative debugging.

Google Tech Talks October 27, 2008 ABSTRACT Source code versioning is an invaluable tool for software development: - users can easily track the newest versions, - maintainers can easily track down which commit introduced a bug (often making it easier to come up with a fix), - new developers get more documentation than just a big chunk of source code, - etc In my talk I want to stress the importance of source code versioning in a related context: when contributing changes to an Open Source project, which is typically a moving target, it can take a few revisions of the patches until they are accepted. I present several scenarios and workflows, and describe how Git can help with them. Speaker: Johannes Schindelin Johannes studied mathematics with a strong bias to number theory, trying to stay away from applied science as far as possible. Failing, he went on to a software company, where he gave up after finding that code quality played a lower role than pure politics. So he went back to university (Wuerzburg, Germany) to get a PhD in neurogenetics, and after a brief stint at psychology (St Andrews, UK) he now works on image processing (MPI Dresden, Germany).

Google Tech Talks March, 3 2008 ABSTRACT Introduction Project mission statement, history, internal organization, partners, CGAL in numbers. What's in CGAL A survey on available data structures and algorithms, as well as examples how and by whom they are used. Topics include Triangulations, Voronoi diagrams, Boolean operations on polygons and polyhedra, arrangements of curves and their applications, Mesh generation, Geometry processing, Alpha shapes, Convex hull algorithms, Operations on polygons, Search structures, Interpolation, Shape analysis, fitting, and distances, Kinetic data structures... Generic Programming Paradigm CGAL data structures are C++ template classes and functions, usually taking several template parameters (with default values for ease of use). This gives developers an incredible flexibility to adapt the data structures to their needs, which is important internally for code reuse, and important for end users, as they typically integrate CGAL in already existing applications. Parts of CGAL are also interfaced with languages and software like Python, Java, Scilab, Qt and the Ipe drawing editor. Exact Geometric Computing Paradigm We present how to make geometric algorithms correct, robust, and nevertheless fast, by combining floating point arithmetic with exact arithmetic, and clever filtering mechanisms to switch between these two modes. These mechanisms can be used for geometric predicates, as well as for geometric constructions, which instead of a discrete return value generate new geometric entities. Conclusion and Outlook A wrapup, and a sneak preview on algorithms that might make it into future releases of CGAL. Speaker: Andreas Fabri, PhD, GeometryFactory As member of the initial development team of the CGAL project, Andreas is one of the architects of the CGAL software. For several years he chaired the CGAL Editorial Board. In 2003, Andreas founded the GeometryFactory as spin-off of the CGAL project, offering licenses, service and support to commercial users. Andreas received his PhD in 1994 from the Ecole des Mines de Paris, while working on geometric algorithms for parallel machines at INRIA. Speaker: Sylvain Pion, PhD, INRIA Sophia-Antipolis Sylvain got involved in the CGAL project during his PhD, which he received in 1999 at INRIA. He worked then on providing generic solutions to numerical robustness issues arising in geometric algorithms. Later on he worked on the efficiency of some fundamental geometric algorithms such as 3D Delaunay triangulations. He is now also involved in C++ standardization, and is working on parallel geometric algorithms. He is employed as researcher at INRIA, and is the current chair of the CGAL Editorial Board.

Google TechTalks April 11, 2006 Alberto Conti Carol Christian ABSTRACT A revolution is now underway in Astronomy and Astrophysics. The next decade will witness the completion of massive, wide-area, multicolor imaging and spectroscopic surveys of the local and distant Universe. With its strong legacy of public outreach, Hubble's Space Telescope Science Institute (STScI) has been responsible for how most of the world views our universe. We recognize that, given the coming flood of information, the next step of this task is to allow users to actively explore the cosmos themselves. In this talk we hope to show some of the potential explorations of this wealth of data to help us all better...

What if you could have ONE phone number that worked anywhere in the world and that you could always have and take with you as you moved around? What if you could call that number from both VoIP services and the traditional phone system (PSTN)? That is the promise of an "iNum" and in this show host Dan York interviews Voxbone CEO and co-founder Rod Ullens about the iNum launch today. More info about iNum can be found at http://www.inum.net and about the show at http://blogs.voxeo.com/ett

Google Tech Talks July 15, 2008 ABSTRACT Org-mode is a large Emacs sub-systems that has been integrated into Emacs with the version 22.1 release. From it original intend, Org-mode is a system for structured note-taking and project planning. It uses strictly plain text files, making it a truly portable, system-independent solution. The project-planning features are implemented using a fairly simple outlining paradigm, upon which meta-data concepts like due dates, priorities, TODO states and tags are overlayed in a non-intrusive way. Besides outlining the system and its basic concepts, I will give background information into the history of Org-mode and discuss the properties of such an evolved system compared to a top-down designed one. Finally, I will also briefly touch on some technical aspects that may be interesting for Emacs wizards and developers. Speaker: Carsten Dominik

For the last 15 years the music industry has been grappling with the problem of how to make money from music using the internet. New technologies are inevitably disruptive, which is shown clearly in the sales charts across the record industry. We spoke to Ethan Kaplan, Vice President of Technology at Warner Bros. Records to find out his views on how the music industry is coming to terms with the internet.

Google Tech Talks October 1, 2008 ABSTRACT To create enhanced user interfaces for retrieval and processing of audio and other media, we developed a range of techniques that leverage the human brain's enormous capabilities in visual and auditory perception and draw on computer graphics as well as automated acoustic content analysis and new applications of human-computer interface devices. Our aim is to put more fun into these tasks--for both casual and professional users--and to provoke serendipity. We demonstrate--among other examples--how to quickly search through large collections of sound effects by listening to several ones simultaneously, with the user being immersed in a spatial field of sounds. We show how to find music files with the help of procedurally generated icons that replace the standard file icons--a fleet-footed application of visual data mining for non-experts. Today, not only collections of media files can become overwhelming, but also collections of effect software can. To address this issue, we show how to represent a collection of audio plug-in effects as virtual folders through a FUSE system. Speaker: Sebastian Heise Sebastian Heise is a M.Sc. student in the Digital Media program of Hochschule Bremen (University of Applied Sciences), Germany. Sebastian has worked as a sound designer in game development teams at Gauselmann Group. Speaker: Michael Hlatky Michael Hlatky is a M.Sc. student in the Digital Media program of Hochschule Bremen (University of Applied Sciences), Germany. Michael has done research on sound quality for Bang a/s and AUDI AG. Speaker: Jorn Loviscach Jorn Loviscach is a professor in the Digital Media program of Hochschule Bremen (University of Applied Sciences), Germany. Jorn works on computer graphics, human-computer interaction, and audio and music computing. He is a regular contributor to conferences such as SIGGRAPH, Eurographics and the AES Convention. In addition, he has published numerous chapters in book series such as Game Programming Gems and ShaderX Programming.

Google Tech Talks April, 25 2008 ABSTRACT In February of 2008, Matt Leacock released Pandemic, a board game where players cooperate to save the world from deadly diseases that threaten to wipe out humanity. The game has been enthusiastically received, with its first printing selling out in less than a month. Matt will discuss how being an interaction designer affected the game design process as well as how cooperative games can point to new models for engagement in online systems. Pandemic's BoardGameGeek page is http://www.boardgamegeek.com/game/30549 Speaker: Matt Leacock Matt Leacock is a principal designer at Yahoo! Inc. When he's not designing social platforms and products for Yahoo!, he dabbles in board game design. Matt's ludography (list of game designs) is here: http://www.boardgamegeek.com/designer/378 Matt's work bio is here: http://www.socialtext.net/ocu2007/index.cgi?matt_leacock

Google TechTalk, осень 2007: Владимир Долгов: "Google, Интернет, Бизнес" РЭА им. Г.В. Плеханова, 10 октября 2007 года