Adam Drake About Sat 25 January 2014 by Adam Drake As I was browsing the web and catching up on some sites I visit periodically, I found a cool article from Tom Hayden about using Amazon Elastic Map Reduce (EMR) and mrjob in order to compute some statistics on win/loss ratios for chess games he downloaded from the millionbase archive , and generally have fun with EMR. Since the data volume was only about 1.75GB containing around 2 million chess games, I was skeptical of using Hadoop for the task, but I can understand his goal of learning and having fun with mrjob and EMR. Since the problem is basically just to look at the result lines of each file and aggregate the different results, it seems ideally suited to stream processing with shell commands. I tried this out, and for the same amount of data I was able to use my laptop to get the results in about 12...

~?~

html Ad: Leaderboard QS-AD: 'lb' start QS-AD: 'lb' end Container: Navigation Distros SysAdmin Mobile Software Datacenter HPC Development LMTV Container: Primary Content Harness the power of distributed computing using everyday Unix command-line tools and a clever little bash script. By Jeremy Zawodny Monday, July 6th, 2009 <script type='text/javascript'> GA_googleFillSlot("LinuxMagazine_ROS_300x250_North"); </script> QS-AD: 'imu' start QS-AD: 'imu' end In late 2004, Google surprised the world of computing with the release of the paper MapReduce: Simplified Data Processing on Large Clusters . That paper ushered in a new model for data processing across clusters of machines that had the benefit of being simple to understand and incredibly flexible. Once you adopt ...

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 51 Star 656 Fork 66 erikfrey / bashreduce /.container /.repohead Code Issues Pull Requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar mapreduce in bash 42 commits 3 branches 0 releases 2 contributors C 49.8% Shell 44.8% Makefile 5.4% C Shell Makefile branch: master Switch branches/tags Branches Tags arosien/master brm master Nothing to show Nothing to show bashreduce / MIT license - have fun everyone latest commit 5a095e771c erikfrey authored Mar 1, 2015 Failed to load latest commit infor...

ClickTale Top part ClickTale end of Top part Competitions Discussions In cooperation with Warlight.net Companies Sign up Sign in Forgot your password? Home Rules Getting Started Leaderboard Game log Discussions midControl #controls #wrapper enjoy our first even better Warlight AI Challenge 2 is the successor to the very popular Warlight AI Challenge. This game is based on the awesome online game Warlight , where you play the game yourself, but here you let your bot fight for you! To make Warlight AI Challenge 2 even more exiting, we made a lot of changes including randomly generated maps. So start coding and upload your bot to join the battles! Here you can see the prizes you can win in the finals of Warlight AI Challenge 2. Same as the other competitions, you will have to get through the semi-finals and you are entitled to one of these prizes. Then the finals will decide which of the e...

~?~

CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search This article includes a list of references , related reading or external links , but its sources remain unclear because it lacks inline citations . Please improve this article by introducing more precise citations. (December 2009) In mathematics, the Lebesgue covering dimension or topological dimension of a topological space is one of several different ways of defining the dimension of the space in a topologically invariant way. 1 Definition 2 Examples 3 Properties 4 History 5 See also 6 References 6.1 Historical references 6.2 Modern references 7 External links Definition [ edit ] An open cover of a topological space X is a family of open sets whose union is X . The ply of a cover is the smallest number n (if it exists) such that each point of the space belongs...

CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search In mathematics , the dimension of a vector space V is the cardinality (i.e. the number of vectors) of a basis of V over its base field . [ 1 ] [ a ] For every vector space there exists a basis, [ b ] and all bases of a vector space have equal cardinality; [ c ] as a result, the dimension of a vector space is uniquely defined. We say V is finite-dimensional if the dimension of V is finite . The dimension of the vector space V over the field F can be written as dim F ( V ) or as [V : F], read "dimension of V over F ". When F can be inferred from context, dim( V ) is typically written. 1 Examples 2 Facts 3 Generalizations 3.1 Trace 4 See also 5 Notes 6 References 7 External links Examples [ edit ] The vector space R 3 has as a basis , and therefore we have dim R ( R 3...

CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search 11.5 x 200 = 2300 km 28 x 100 = 2800 km 70 x 50 = 3500 km Figure 1. As the length of the measuring stick is scaled smaller and smaller, the total length of the coastline measured increases. A fractal dimension is a ratio providing a statistical index of complexity comparing how detail in a pattern (strictly speaking, a fractal pattern) changes with the scale at which it is measured. It has also been characterized as a measure of the space-filling capacity of a pattern that tells how a fractal scales differently from the space it is embedded in; a fractal dimension does not have to be an integer. [ 1 ] [ 2 ] [ 3 ] The essential idea of "fractured" dimensions has a long history in mathematics, but the term itself was brought to the fore by Benoit Mandelbrot based on his 196...

CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search A dragon curve is any member of a family of self-similar fractal curves, which can be approximated by recursive methods such as Lindenmayer systems . 1 Heighway dragon 1.1 Construction 1.2 [Un]Folding the Dragon 1.2.1 Gray code method 1.3 Dimensions 1.4 Tiling 2 Twindragon 3 Terdragon 4 Lévy dragon 5 Occurrences of the dragon curve in solution sets 6 See also 7 Notes 8 External links Heighway dragon [ edit ] Heighway dragon curve The Heighway dragon (also known as the Harter–Heighway dragon or the Jurassic Park dragon ) was first investigated by NASA physicists John Heighway, Bruce Banks, and William Harter. It was described by Martin Gardner in his Scientific American column Mathematical Games in 1967. Many of its properties were first published by Chandle...

<![endif] Ars Technica Register Log in Home Main Menu Information Technology Technology Lab Product News & Reviews Gear & Gadgets Business of Technology Ministry of Innovation Security & Hacktivism Risk Assessment Civilization & Discontents Law & Disorder The Apple Ecosystem Infinite Loop Gaming & Entertainment Opposable Thumbs Science & Exploration The Scientific Method All Things Automotive Cars Technica Layout: Grid View Article View Dark on light Light on dark Reviews Video Staff Blogs Feature Archive Staff Directory Contact Us Photography Productivity Cloud Gadgets Tablets My Stories: 0 See more news stories Log in to track your discussions. Forums Subscribe Jobs Ars Consortium cache hit 83:home/toppost:f3fda06d4fb35e8aa360e369ff702613 Scientific Method ...

Archive What If? Blag Store About A webcomic of romance, sarcasm, math, and language. xkcd updates every Monday, Wednesday, and Friday. Fundamental Forces |< < Prev Random Next > >| |< < Prev Random Next > >| Permanent link to this comic: http://xkcd.com/1489/ Image URL (for hotlinking/embedding): http://imgs.xkcd.com/comics/fundamental_forces.png http://code.google.com/p/chromium/issues/detail?id=108489 Might be MIME dependent. Search comic titles and transcripts: RSS Feed - Atom Feed Comics I enjoy: Three Word Phrase , Oglaf (nsfw), SMBC , Dinosaur Comics , A Softer World , Buttersafe , Perry Bible Fellowship , Questionable Content , Buttercup Festival , Homestuck Warning: this comic occasionally contains strong language (which may be unsuitable for children), unusual humor (which may be unsuitable for adults), and advanced mathemat...

Mathematics, biology and recreation corrects IE6 width calculation google_ad_section_start(name=default) Tuesday, February 17, 2015 Summary An interesting method by which I found out that people were cheating on my final exam. Background I use different versions of midterm examinations to discourage cheating in my population biology class (~200 students). When the course started, I used to do the same thing for the final exam, but it was a little more complicated, because the final exam is administered by the registrar's office, not by me and my teaching team. At some point, somebody advised me not to bother with versions: the registrar's office is supposed to be professional about administration, and they usual...

...

~?~

...

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 1 Star 6 Fork 2 qpfiffer / merveilles_io /.container /.repohead Code Issues Pull Requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar Permalink blob contrib key: blob_contributors:v21:0bfc7d4032077b239fe3e2c1109560b5 branch: master Switch branches/tags Branches Tags master Nothing to show v0.1 Nothing to show merveilles_io / src / merveilles / routes.py qpfiffer Nov 8, 2014 Display editorialized comment per item, if it has one. 2 contributors qpfiffer makoConstruct 227 lines (182 sloc) 7.913 kb Raw Blame History /.button-group ...

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 1 Star 6 Fork 2 qpfiffer / merveilles_io /.container /.repohead Code Issues Pull Requests Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar A flask + kyotocabinet app that lists links posted to it in a timeline like fashion. http://merveill.es/ 325 commits 1 branch 1 release 2 contributors JavaScript 51.0% Python 40.8% CSS 7.8% Shell 0.4% JavaScript Python CSS Shell branch: master Switch branches/tags Branches Tags master Nothing to show v0.1 Nothing to show merveilles_io / Smarter filtering on youtube.co...

Skip to content Sign up Sign in This repository Explore Features Enterprise Blog Watch 405 Star 5,248 Fork 917 CocoaPods / CocoaPods /.container /.repohead Code Issues Pull Requests Wiki Pulse Graphs HTTPS Subversion You can clone with HTTPS or Subversion . Download ZIP /.repository-sidebar The Cocoa Dependency Manager. http://cocoapods.org 4,450 commits 12 branches 109 releases 149 contributors Ruby 87.9% Swift 8.0% Objective-C 4.1% Ruby Swift Objective-C branch: master Switch branches/tags Branches Tags delegate-all-ui-to-client fabio-pods-from-projects fix-static-binaries-check local_repos master pods-project-edit-feature prevent-dynamic-l...