Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The newest AI computing tool: people

02.07.2007
Folksonomy rising: social information processing techniques gathering momentum and power

A USC Information Sciences Institute researcher thinks she has found a new source of artificial intelligence computing power to solve difficult IT problems of information classification, reliability, and meaning.

That tool, according to ISI computer scientist Kristina Lerman, is people, human intelligence at work on the social web, the network of blogs, bookmark, photo and video- sharing sites, and other meeting places now involving hundreds of thousands of individuals daily, recording observations and sharing opinions and information.

Lerman shared her recent work with others in the burgeoning new field of social information processing a special AAAI-sponsored symposium on the subject March 26-28 at Stanford.

She says that extracting 'metadata' about transactions -- who is talking to whom, who is listening, how conclusions are reached, and how they spread -- can help researchers answer currently refractory problems about documents: their accuracy and quality, their categorization, the relation of their embedded terminology.

One benefit, according to Lerman, who in addition to her ISI appointment, is a research assistant professor at the Viterbi School of Engineering Department of Computer Science at University of Southern California, is automatic determination of the semantics of content from one kind of metadata: tags.

Tags play a crucial role in a longrunning project called the Semantic Web.

For about a decade, she notes, researchers sought a way to organize data so that someone searching for a specific kind of "check" wouldn't have to weed out unwanted references to chess, symbols, verification procedures, financial documents, political science theories and many more.

Tagging seeks to eliminate ambiguities by affixing 'tags,' computer labels peeling apart the multiple meanings of ordinary language into discreet indicators of meaning, guiding computer searches.

But with natural language being as complex as it is, making sense of tags is not easy. Attempts to manually attack the vocabulary and build in the intricate interconnections that signal different word meanings have proved frustrating.

Lerman hopes she's onto another way. Hundreds of thousands of users are now online, chattering away on all kinds of topics. This volume of directed discourse provides a new way to extracting meaning from tags —statistical models.

The process has been called "folksonomy," a collectively constructed informal classification system. Unlike the traditional approach to the Semantic Web, in which a few knowledge professionals try to agree on a formal classification system which will then be used to annotate data, folksonomy emerges from collective tagging activities of many individuals.

New social websites aimed at sharing information such as del.icio.us and Flickr organically grow ways for site members to access each others holdings. Typically, the members themselves spontaneously create a tagging system, encouraged by the site architecture.

The tags emerging from such systems, Lerman and collaborators have found, can be turned to broader purposes.

One of Lerman's initial tagging investigations used the photo-sharing site Flickr, analyzing results returned by a request for images of 'beetles,' including some pictures of insects, some pictures of Volkswagens, and a few other entries.

By extracting the tags that Flickr users had described the images with, and applyng a mathematical technique called the "Expectation-maximization (EM) algorithm," Lerman found it possible to quite accurately separate pictures of insects from pictures of cars returned by the “beetle” search.

Lerman has gone beyond tagging to using metadata to acquire more and more accurate information about the content of documents in social networking situations.

A Lerman paper now in pre-publication on "Social Information Processing in Social News Aggregation" notes: The rise of the social media sites, such as blogs, wikis, Digg and Flickr among others, underscores the transformation of the Web to a participatory medium in which users are collaboratively creating, evaluating and distributing information.

The innovations introduced by social media have lead to a new paradigm for interacting with information, what we call 'social information processing'.

In the paper, Lerman argues that "by tracking stories over time, that social networks play an important role in document recommendation." In addition to providing a platform for document recommendation, social Web enables researchers to study collective user behavior quantitatively.

In the same paper, Lerman also presented a mathematical model of how collaborative rating and promotion of stories emerges from the independent decisions made by many users. She found good agreement between predictions of the model and user data gathered from Digg.

In another paper, examining de.licio.us, Lerman and collaborators "describe a probabalistic model of the user annotation process," and then used the model "to automatically find resources relevant to a particular information domain ... with promising results."

Eric Mankin | EurekAlert!
Further information:
http://www.usc.edu

More articles from Information Technology:

nachricht Cutting edge research for the industries of tomorrow – DFKI and NICT expand cooperation
21.03.2017 | Deutsches Forschungszentrum für Künstliche Intelligenz GmbH, DFKI

nachricht Molecular motor-powered biocomputers
20.03.2017 | Technische Universität Dresden

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

When Air is in Short Supply - Shedding light on plant stress reactions when oxygen runs short

23.03.2017 | Life Sciences

Researchers use light to remotely control curvature of plastics

23.03.2017 | Power and Electrical Engineering

Sea ice extent sinks to record lows at both poles

23.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>