Showing posts with label crowds. Show all posts
Showing posts with label crowds. Show all posts

Wednesday, April 20, 2011

The Power of the People

The Power of the People, Dave Munger, Seed Magazine, 12/22/10

"Some of the most influential scientists in history, from Franklin, to Lavoisier, to Mendel, weren’t formally educated in their fields of study. They just took an interest, and started conducting experiments, sometimes in their own back yards. But more recently, the specialized tools of science have put new discoveries out of reach for ordinary people. Now that dynamic is beginning to change again.

The internet has spawned a fantastic explosion in science that allows non-experts to actually participate in science by interacting with scientific data itself. I wrote about several such projects last year. Now, in just the past week, two new public tools for analyzing data have been unveiled, from two very different fields of study.

First, the Zooniverse project has released its newest endeavor, called The Milky Way Project. One of the astronomers working on the project, Sarah Kendrew, explained how the project works on her blog last week. Users from among the hundreds of thousands registered with Zooniverse log in to their accounts and are shown images of the Milky Way from the Spitzer Space Telescope. Their job: To identify regions known as “bubbles,” areas of gas and other debris that appear to be arranged in nearly-spherical structures."

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"But the Milky Way Project was upstaged a bit last week by another project that allows anyone to dig deep into data of a different sort: a significant percentage of the entirety of books that have ever been published. The project’s founders are calling it “culturomics,” and their first journal article on the topic was published last week in Science. The research has been discussed extensively on blogs, but the best way to experience the work might just be to visit the tool Google developed that allows anyone to see a cross-section of a vast dataset: the Books Ngram Viewer. Type in any word (or several words or short phrases separated by commas), and you’ll instantly be presented with a graph showing the how frequently that word has been used over the past two centuries. Here’s the graph I made for macaroni and spaghetti, showing that macaroni was the more popular term until about 1950, and spaghetti was essentially unheard of before 1880."

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"Projects like Zooniverse and Google’s Ngram Viewer represent crowd-sourcing on the grandest scale yet achieved. What I’d like to see next is an analysis of the crowds who are using these tools. What words do people look up? What methods do they use to identify galaxies and bubbles—and how long do they persist at it? The answers to these questions may, in turn, lead to even more powerful tools—and a greater understanding of our world."

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Here's an example that I tried of the Books Ngram Viewer. I searched for two words that I think should go together: innovation and commons:

You can see that the word commons has been dropping for a long time, and innovation has been rising. Interesting. Don't know what it means but it's another cool tool.

Wednesday, September 9, 2009

The Wisdom of Crowds

From Publishers Weekly
While our culture generally trusts experts and distrusts the wisdom of the masses, New Yorker business columnist Surowiecki argues that "under the right circumstances, groups are remarkably intelligent, and are often smarter than the smartest people in them." To support this almost counterintuitive proposition, Surowiecki explores problems involving cognition (we're all trying to identify a correct answer), coordination (we need to synchronize our individual activities with others) and cooperation (we have to act together despite our self-interest). His rubric, then, covers a range of problems, including driving in traffic, competing on TV game shows, maximizing stock market performance, voting for political candidates, navigating busy sidewalks, tracking SARS and designing Internet search engines like Google. If four basic conditions are met, a crowd's "collective intelligence" will produce better outcomes than a small group of experts, Surowiecki says, even if members of the crowd don't know all the facts or choose, individually, to act irrationally. "Wise crowds" need (1) diversity of opinion; (2) independence of members from one another; (3) decentralization; and (4) a good method for aggregating opinions. The diversity brings in different information; independence keeps people from being swayed by a single opinion leader; people's errors balance each other out; and including all opinions guarantees that the results are "smarter" than if a single expert had been in charge. Surowiecki's style is pleasantly informal, a tactical disguise for what might otherwise be rather dense material. He offers a great introduction to applied behavioral economics and game theory.

Wednesday, January 21, 2009

Why Crowdsourcing Might Be Better than Secret Service

Matt.Bachman, College Mogul

Microsoft put its Photosynth technology to work yesterday at the Presidential Inauguration and the results are impressive. In a nutshell, the application builds a navigable, 3-D model of a landscape by compiling, sorting, and repositioning a collection of photos. Here’s the kicker: the app is crowdsource-capable. (What is crowdsourcing? ) Working with CNN photographers located among the masses, Microsoft successfully mapped the scene around the Capitol building. By allocating each photo to a specific point cloud, or notable point of focus within the photo, the application calculates patterns and variations in the photo cloud, locates the vantage point of each photo, and finally positions it accordingly within the model.

See Photosynthesis

The decision to showcase technology calculating vantage points and mapping a seemingly infinite area at an event where the President is exposed to a massive crowd underscores the security potential of Photosynth. It is not hard to imagine Presidential security using this software to track a sniper hidden within a sea of people. More astounding is that the application’s performance improves with increasing scale, as more photos create a more detailed model.

Photosynth is just one of several surveillance technologies that rely on a human network to provide near-real time information and become increasingly effective as they scale. Back in October, CM profiled Purdue University’s Distributed Nuclear Detection by Ubiquitous Cell Phone project, where a chip embedded in a network mobile devices can detect radiation from a dirty bomb and triangulate its location. More recently, the surveillance capability of mobile phones allowed users to almost instantly upload photos of flight 1549 from passing ferries and midtown offices to Twitter —before mainstream media or authorities reached the scene its crash in the Hudson.

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