BestTechVideos: Category Broadcasting Videos

Scene Discovery by Matrix Factorization

scoundrel — Mon, 07 Apr 2008 22:51:58 GMT

Google Tech Talks
March, 24 2008

ABSTRACT

What constitutes a scene? Defining a meaningful vocabulary for scene discovery is a challenging problem that has important consequences for object recognition. We consider scenes to depict correlated objects and present visual similarity. We introduce a max-margin factorization model that finds a low dimensional subspace with high discriminative power for correlated annotations. We postulate this space should allow us to discover a large number of scenes in unsupervised data; we show scene discrimination results on par with supervised approaches. This model also produces state of the art word prediction results including good
annotation completion.

Speaker: Ali Farhadi
Ali Farhadi is a PhD student in the UIUC Computer Science Department working on computer vision and machine learning under David Forsyth. His interests include image segmentation, transfer learning, scene understanding and human activity recognition.

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Browse the archive of posts filed under Conferences, Companies, Broadcasting, Science, Techtalks, Google, Lectures, Math, Computer Science

Railscast: Complex Partials

scoundrel — Wed, 02 Apr 2008 17:58:54 GMT

How do you handle partials which have differences depending on the action which is rendering them? Here's three suggestions for this problem.

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ThoughtWorks India - Day in the Life of a Project Manager

rajivmathew — Sat, 22 Mar 2008 05:03:12 GMT

What's it like to be a ThoughtWorker in India? Here, a ThoughtWorks Project Manager shares his experiences being part of the ThoughtWorks team.

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Easy Restful Rails

scoundrel — Wed, 27 Feb 2008 17:06:53 GMT

So, the idea came when I saw James Golick’s excelent resource_controller plugin. It does what I always thought should be part of Rails itself: it made Restful Controller as easy to use and understand as ActiveRecord originally does for Models and the database.

This screencast is a quick rendition to this plugin and how to use to leverage the power of Restful controller in your applications. This is one of those great ideas that – who knows – could find its place in the Rails Core one day, the same way Sexy Migrations did.

The concept is that now that we treat a controller’s action in a standardized way (through the abstraction of HTTP verbs) it could perfectly be refactored away from the day-to-day development. So, instead of scaffold creating a bunch of repeated code in every controller, why not have a bare-bone controller, totally empty, to start with?

Another clever idea was to create dynamic helpers for named routes in the views. That way you can move your views around, and even reuse them in different sections without ever copying & pasting several different named routes between them. This is particularly useful for polymorphic controllers and namespaced routes as I show in this video.

At the very end of the video I do a quick summary of what Restful Rails provides you in terms of routes organization, that could be helpful to some.

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Browse the archive of posts filed under Databases, Development, Broadcasting, Frameworks, Ruby, Screencasts, Ruby On Rails

MonetDB/X100: a (very) fast column-store

scoundrel — Wed, 27 Feb 2008 16:58:47 GMT

Google Tech Talks
January, 15 2008

ABSTRACT

MonetDB/X100 is a second-generation column-store prototyped at CWI, targeted
at analysis-heavy data management tasks such as data warehousing and information retrieval. In this overview talk I will outline the research challenges, novel techniques and results from this project. The ideal is to close the existing performance gap between hand-coded applicationas and database systems using architecture- onscious techniques, and by carefully exploiting the bandwith strengs of modern hardware (and avoiding its latency weaknesses).

The novel techniques presented encompass expressing relational operators as vector operations, lightweight compression on the border between CPU cache and RAM, sequential-access optimized database design and I/O bandwidth sharing.

Speaker: Peter Boncz

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Railscast: Action Caching

scoundrel — Wed, 27 Feb 2008 16:56:54 GMT

Action caching behaves much like page caching except it processes the controller filters. You can also make it conditional as seen in this episode.

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Standing On The Shoulders Of Giants: The Coming Of The Linux Desktop

scoundrel — Wed, 27 Feb 2008 16:54:21 GMT

Google Tech Talks
February, 12 2008

ABSTRACT

In this brand-new presentation, Jono Bacon, Ubuntu Community Manager at
Canonical shares his vision of the future of the Linux desktop
community, and talks about how the desktop is growing and dealing with
the incredible focus and growth that has happened to it in recent years.
The talk covers the history of the Linux desktop so far, where it has
broadened, what challenges it faces, how it is dealing with its sudden
popularity and what the future holds, all bundled up into an amusing,
anecdotal presentation that you won't want to miss.

Speaker: Jono Bacon
Jono Bacon works at Canonical as the Ubuntu Community Manager and works
to grow, scale and lead the world-wide Ubuntu community. Bacon
previously had a background in journalism (writing for over 12
publications and three books) and also worked as a professional Open
Source advocate at the UK government funded OpenAdvantage. He is a
prominent member of the Open Source community, co-founder and presenter
of LugRadio, contributor to projects such as Jokosher, KDE and GNOME,
and an active musician, playing in a metal band and recording his own
solo material. He lives in the England.

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Browse the archive of posts filed under OS, Broadcasting, Linux, Techtalks, Google, Lectures

Railscast: Refactoring Long Methods

scoundrel — Tue, 12 Feb 2008 08:07:31 GMT

In this episode I walk you through an exercise in refactoring by taking a long method and making it more concise.

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Statistical Virtualization: Scale as a Tool for Implementing Service Overlays

scoundrel — Tue, 12 Feb 2008 07:55:33 GMT

Google Tech Talks
January, 10 2008

In this talk, we will explore the use of on-line non-parametric time series analysis and prediction to build virtualized services in distributed computing environments. In particular, by analyzing and predicting the future behavior of one set of distributed services we explore how they can be amalgamated dynamically to implement a "virtual" service overlay with properties that are not supported by any of the constituent service components (i.e. derive strictly from aggregation).

We illustrate the approach by detailing distributed batch-scheduling mechanisms that provide both reservation and co-allocation services in environments that explicitly do not support them. While our work focuses on national-scale scientific computing infrastructure, we believe its alternative approach to virtualizing distributed systems abstractions is important in a larger scalable systems context for two reasons. First, because the methodology is inherently statistical, it improves with scale making scale a tool (rather than an impediment) in terms of implementation. Secondly, it shares many common features, both conceptually and implementationally with scalable search services making it possible, we believe, to explore the use of commercial search infrastructure in future work.

Speaker: Rich Wolski
My origins, like those of most people born in North America during this century, are ambiguous and questionable. I am currently an Associate Professor in the Computer Science Department at the University of California, Santa Barbara which is, of course, located in Goleta California for all intents and purposes that do not involve the U.S. Mail. My past is checkered (it used to be plaid, but I've been politely informed that a past can only be so retro). Formerly, I enjoyed the hospitable climes offered by the Computer Science Department at the University of Tennessee. I've also done time as research faculty member in the U.C. San Diego CS&E Department where I researched CS and a little E (every now and then) in a decidedly pedagogical manner. My research interests include, but are not limited to, Computational Grid computing for performance, parallel and distributed systems, and the endless metaphysical search for the perfect coffee cup.

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Railscast: Dynamic Select Menus

scoundrel — Wed, 30 Jan 2008 06:40:07 GMT

See how to dynamically change a select menu based on another select menu using Javascript. In this episode everything is kept client side which leads to a more responsive user interface.

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