Dr.Feed

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Hugh Pickens writes “A new study shows that the patterns of collaboration among Wikipedia contributors directly affect the quality of an article. ‘These collaboration patterns either help increase quality or are detrimental to data quality,’ says Sudha Ram at the University of Arizona. Wikipedia has an internal quality rating system for entries, with featured articles at the top, followed by A, B, and C-level entries. Ram and graduate student Jun Liu randomly collected 400 articles at each quality level. ‘We used data mining techniques and identified various patterns of collaboration based on the provenance or, more specifically, who does what to Wikipedia articles,’ says Ram. The researchers identified seven specific roles that Wikipedia contributors play (PDF starting on page 175): Casual Contributor, Starter, Cleaner, Copy Editor, Content Justifier, Watchdog, and All-round Editor. Starters, for example, create sentences but seldom engage in other actions. Content justifiers create sentences and justify them with resources and links. The all-round contributors perform many different functions. ‘We then clustered the articles based on these roles and examined the collaboration patterns within each cluster to see what kind of quality resulted,’ says Ram. ‘We found that all-round contributors dominated the best-quality entries. In the entries with the lowest quality, starters and casual contributors dominated.’”

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Hugh Pickens writes “A new study shows that the patterns of collaboration among Wikipedia contributors directly affect the quality of an article. ‘These collaboration patterns either help increase quality or are detrimental to data quality,’ says Sudha Ram at the University of Arizona. Wikipedia has an internal quality rating system for entries, with featured articles at the top, followed by A, B, and C-level entries. Ram and graduate student Jun Liu randomly collected 400 articles at each quality level. ‘We used data mining techniques and identified various patterns of collaboration based on the provenance or, more specifically, who does what to Wikipedia articles,’ says Ram. The researchers identified seven specific roles that Wikipedia contributors play (PDF starting on page 175): Casual Contributor, Starter, Cleaner, Copy Editor, Content Justifier, Watchdog, and All-round Editor. Starters, for example, create sentences but seldom engage in other actions. Content justifiers create sentences and justify them with resources and links. The all-round contributors perform many different functions. ‘We then clustered the articles based on these roles and examined the collaboration patterns within each cluster to see what kind of quality resulted,’ says Ram. ‘We found that all-round contributors dominated the best-quality entries. In the entries with the lowest quality, starters and casual contributors dominated.’”

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grimwell sends in the news that after Cryptome’s little run-in with Microsoft and NetSol, the activist site has now had its funds frozen by PayPal. Cryptome founder John Young notes, “Google lists thousands of instances of this asymmetrical high-handedness.” “We have reviewed your PayPal Account, and due to the excessive risk involved, we would like to begin parting ways in a manner that is least disruptive to your business.”

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Hugh Pickens writes “A new study shows that the patterns of collaboration among Wikipedia contributors directly affect the quality of an article. ‘These collaboration patterns either help increase quality or are detrimental to data quality,’ says Sudha Ram at the University of Arizona. Wikipedia has an internal quality rating system for entries, with featured articles at the top, followed by A, B, and C-level entries. Ram and graduate student Jun Liu randomly collected 400 articles at each quality level. ‘We used data mining techniques and identified various patterns of collaboration based on the provenance or, more specifically, who does what to Wikipedia articles,’ says Ram. The researchers identified seven specific roles that Wikipedia contributors play (PDF starting on page 175): Casual Contributor, Starter, Cleaner, Copy Editor, Content Justifier, Watchdog, and All-round Editor. Starters, for example, create sentences but seldom engage in other actions. Content justifiers create sentences and justify them with resources and links. The all-round contributors perform many different functions. ‘We then clustered the articles based on these roles and examined the collaboration patterns within each cluster to see what kind of quality resulted,’ says Ram. ‘We found that all-round contributors dominated the best-quality entries. In the entries with the lowest quality, starters and casual contributors dominated.’”

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grimwell sends in the news that after Cryptome’s little run-in with Microsoft and NetSol, the activist site has now had its funds frozen by PayPal. Cryptome founder John Young notes, “Google lists thousands of instances of this asymmetrical high-handedness.” “We have reviewed your PayPal Account, and due to the excessive risk involved, we would like to begin parting ways in a manner that is least disruptive to your business.”

[read more]

grimwell sends in the news that after Cryptome’s little run-in with Microsoft and NetSol, the activist site has now had its funds frozen by PayPal. Cryptome founder John Young notes, “Google lists thousands of instances of this asymmetrical high-handedness.” “We have reviewed your PayPal Account, and due to the excessive risk involved, we would like to begin parting ways in a manner that is least disruptive to your business.”

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Last year we discussed news that an Xbox Live gamer was banned for identifying herself as a lesbian on her profile. Microsoft said at the time that nothing sexual in nature could appear in Gamertags or profiles. Now, they seem to have reconsidered their stance, and they’ve updated their Code of Conduct accordingly. Xbox Live General Manager Marc Whitten wrote:
“[The update] will allow our members to more freely express their race, nationality, religion and sexual orientation in Gamertags and profiles. Under our previous policy, some of these expressions of self-identification were not allowed in Gamertags or profiles to prevent the use of these terms as insults or slurs. However we have since heard feedback from our customers that while the spirit of this approach was genuine, it inadvertently excluded a part of our Xbox LIVE community. This update also comes hand-in-hand with increased stringency and enforcement to prevent the misuse of these terms.”

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Last year we discussed news that an Xbox Live gamer was banned for identifying herself as a lesbian on her profile. Microsoft said at the time that nothing sexual in nature could appear in Gamertags or profiles. Now, they seem to have reconsidered their stance, and they’ve updated their Code of Conduct accordingly. Xbox Live General Manager Marc Whitten wrote:
“[The update] will allow our members to more freely express their race, nationality, religion and sexual orientation in Gamertags and profiles. Under our previous policy, some of these expressions of self-identification were not allowed in Gamertags or profiles to prevent the use of these terms as insults or slurs. However we have since heard feedback from our customers that while the spirit of this approach was genuine, it inadvertently excluded a part of our Xbox LIVE community. This update also comes hand-in-hand with increased stringency and enforcement to prevent the misuse of these terms.”

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Last year we discussed news that an Xbox Live gamer was banned for identifying herself as a lesbian on her profile. Microsoft said at the time that nothing sexual in nature could appear in Gamertags or profiles. Now, they seem to have reconsidered their stance, and they’ve updated their Code of Conduct accordingly. Xbox Live General Manager Marc Whitten wrote:
“[The update] will allow our members to more freely express their race, nationality, religion and sexual orientation in Gamertags and profiles. Under our previous policy, some of these expressions of self-identification were not allowed in Gamertags or profiles to prevent the use of these terms as insults or slurs. However we have since heard feedback from our customers that while the spirit of this approach was genuine, it inadvertently excluded a part of our Xbox LIVE community. This update also comes hand-in-hand with increased stringency and enforcement to prevent the misuse of these terms.”

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xsee writes “Only hours after the earthquake and resulting tsunami from Chile, hackers began manipulating search results to direct people seeking information on the event to infected webpages. Exercise caution as to where you get information on this tragedy. Chester Wisniewski describes what happened after he saw a suspicious site listed second on a Google search: ‘It appears to be a normal website with information and videos about different Asian tsunamis over the past few years. It is difficult to tell whether this particular page was SEO-optimized, or was an innocent victim of a malicious script. SophosLabs got back to me that this page contains some obfuscated malicious JavaScript that we detect as MAL/ObfJS-R. This script was appended after the normal code on the page’”

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An anonymous reader writes “Texas Instruments’ most recent, ARM-based series of graphing calculators, the TI-Nspire line, has long resisted users’ efforts to run their own software. (Unlike other TI calculator models, which can be programmed either in BASIC, C, or assembly language, the Nspire only supports an extremely limited form of BASIC.) A bug in the Nspire’s OS was recently discovered, however, which can be exploited to execute arbitrary machine code. Now the first version of a tool called Ndless has been released, enabling users, for the first time, to write and run their own C and assembly programs on the device. This opens up exciting new possibilities for these devices, which are extremely powerful compared to TI’s other calculator offerings, but (thanks to the built-in software’s limitations) have hitherto been largely ignored by the calculator programming community.”

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jonverve writes “In May of 2009, the White House launched an Ideascale site to gather ideas from citizens to identify ways to ’strengthen our democracy and promote efficiency and effectiveness by making government more transparent, participatory, and collaborative.’ The digital letdown was when many of the top ideas generated by the process were to legalize marijuana, solve tax issues and to reinvestigate Obama’s birth origins. Fast forward to February 6 and the same process has been repeated with individual federal agencies as the subject. This time the idea generation has been much more productive, with ideas such as establishing clear benchmarks on humanitarian progress in Sudan to the State Department, funding for open source text books and materials to the Department of Education, making it easier to access previously FOIAed documents to the Department of Justice, and creating a Wiki for NASA to share its data and to engage the public. Hackers from NASA’s Nebula cloud computing platform have created a site that aggregates 23 of these idea sites to give a quick peek into the best rated contributions in each category. Programmed in Python and using the MongoDB and Tornado web server, the Open Gov Tracker was highlighted by the open government blog Govfresh this past week as well. Jessy Cowan-Sharp, one of the creators, explained their motivation: ‘We thought that a single access point would give a sense of the participation on all the different sites, a window into the discussions happening, build some excitement, and inspire people to participate.’ The process closes on March 19th, so go and visit the site to contribute your ideas and vote!”

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Reader edgeofphysics provides a technical sidelight on the earthquake in Chile this morning — some details on how the European Southern Observatory protects the mirrors of the Very Large Telescope when an earthquake strikes. “Given that Chile is one of the most seismically active countries in the world, how do astronomers protect their giant telescopes that have been built or are being built in the Chilean Andes? This blog post discusses how Chile’s most advanced facility protects its priceless 8.2-meter primary mirrors in the event of an earthquake.”

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mdsolar writes “Following the Vermont Senate’s 26-to-4 vote not to approve a 20-year license extension for the Vermont Yankee nuclear power plant, the Vermont Public Service Board will consider revoking its operating license as well. Meanwhile, the plant continues to operate without its Director of Nuclear Safety Assurance, who has been placed on administrative leave; the Nuclear Regulatory Commission has merely issued a Demand for Information rather than shutting down a plant that is lacking a full compliment of safety personnel. It may be that the NRC is not capable of doing what is needed with regard to Entergy, the plant owner, which is also facing prosecution by the Mississippi Attorney General.”

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eggboard writes “Martin Beck, who in 2008 co-wrote a paper describing a way to inject packets into a secured Wi-Fi system, is back with a more extensive exploit. His ‘Enhanced TKIP Michael Attacks’ still don’t allow extraction of a key, and are limited to TKIP (not AES-CCMP) WPA-protected networks. Still, he’s figured out how to put in large payloads, and to extract data sent from an access point to a client — all without cracking the network key. The attack requires proximity to sniff and inject data, but it’s another crack in the older key standard (TKIP) that no one with serious security interests should still be using.” Here is Beck’s paper (PDF) describing the new attacks.