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To manage information quality (IQ) effectively, one needs to know how IQ changes over time, what causes it to change, and whether the changes can be predicted. In this paper we analyze the structure of IQ change in Wikipedia, an open, collaborative general encyclopedia. We found several patterns in Wikipedia's IQ process trajectories and linked them to article types. Drawing on the results of our analysis, we develop a general model of IQ change that can be used for reasoning about IQ dynamics in many different settings, including traditional databases and information repositories.

BioJava is an open-source project dedicated to providing a Java framework for processing biological data. It includes objects for manipulating biological sequences, file parsers, DAS client and server support, access to BioSQL and Ensembl databases, tools for making sequence analysis GUIs and powerful analysis and statistical routines including a dynamic programming toolkit.

Want to create your own semantic search engine, but just don't have the PhDs? Semantic search engine Hakia is opening up APIs to let anyone build their own semantic search application on top of its technology. Hakia looks at the meaning of Web pages and matches search queries using its own quality index of trusted, relevant sites.

Cytoscape is an open source bioinformatics software platform for visualizing molecular interaction networks and integrating these interactions with gene expression profiles and other state data.

Wikiversity is a Wikimedia Foundation project devoted to learning resources and learning projects for all levels, types, and styles of education from pre-school to university, including professional training and informal learning. We invite teachers, students, and researchers to join us in creating open educational resources and collaborative learning communities.

Why Conversation Cafés? Promoting community, democracy and wisdom world-wide through generating millions of open, respectful public conversations.

Feed Me Links stores your bookmarks online so you can get to them anywhere. Import your favorites and share your links with friends. Add tags to organize your links. Discover new things. Open-source your interests. Power users: Add links via email, track topics via feeds, stay on top of what's hot.

BlogMarks is a collaborative link management project based on sharing and key-word tagging. Build on a blog basis, BlogMarks is an open and free technology. Now, you can access your favorite URL's from any computer. And with BlogMarks, you share your favourite with other users.

Designed for humans first and machines second, microformats are a set of simple, open data formats built upon existing and widely adopted standards

The Gibeo Network is a new online service built by Gibeo. It's a rapidly growing community, a web annotation service, a open content-enhancing platform, an amazingly simple and useful tool for browsing and sharing the web. The Internet is still a fundamentally changing environment and this is the latest evolution in powerful online services. Simply browse the web by adding .gibeo.net to the end of any site, and it will be transparently enhanced by adding any community annotations and highlights to the page as well as enable the menu of personal tools available.

GATE is... * the Eclipse of Natural Language Engineering, the Lucene of Information Extraction, a leading toolkit for Text Mining * used worldwide by thousands of scientists, companies, teachers and students * comprised of an architecture, a free open source framework (or SDK) and graphical development environment * used for all sorts of language processing tasks, including Information Extraction in many languages * funded by the EPSRC, BBSRC, AHRC, the EU and commercial users * 100% Java reference implementation of ISO TC37/SC4 and used with XCES in the ANC * 10 years old in 2005, used in many research projects and compatible with IBM's UIMA * based on MVC, mobile code, continuous integration, and test-driven development, with code hosted on SourceForge

GMT is an open source collection of ~60 tools for manipulating geographic and Cartesian data sets (including filtering, trend fitting, gridding, projecting, etc.) and producing Encapsulated PostScript File (EPS) illustrations ranging from simple x-y plots via contour maps to artificially illuminated surfaces and 3-D perspective views. GMT supports ~30 map projections and transformations and comes with support data such as GSHHS coastlines, rivers, and political boundaries.

The Lemur Toolkit is a open-source toolkit designed to facilitate research in language modeling and information retrieval. Lemur supports a wide range of industrial and research language applications such as ad-hoc retrieval, site-search, and text mining. The toolkit supports indexing of large-scale text databases, the construction of simple language models for documents, queries, or subcollections, and the implementation of retrieval systems based on language models as well as a variety of other retrieval models. The system is written in the C and C++ languages, and is designed as a research system to run under Unix operating systems, although it can also run under Windows.

The mission of The Pelican Web is to collect and analyze knowledge on obstacles to sustainable development, and to publish the monthly, free subscription, open access PelicanWeb Journal of Sustainable Development. The e-journal provides a monthly digest on current research pursuant to human solidarity, ecological sustainability, and both secular and religious non-violence.

Yahoo! GeoPlanet helps bridge the gap between the real and virtual worlds by providing an open, permanent, and intelligent infrastructure for geo-referencing data on the Internet. In practical terms, Yahoo! GeoPlanet is a resource for managing all geo-permanent named places on Earth. It provides the geographic developer community with the vocabulary and grammar to describe the world's geography in an unequivocal, permanent, and language-neutral manner. Developers can geo-enable their applications by using GeoPlanet to traverse the global spatial hierarchy, identify the geography relevant to their users and their businesses, and in turn, unambiguously geotag, geotarget, and geolocate data across the Web.

Common Tag is an open tagging format developed to make content more connected, discoverable and engaging. Unlike free-text tags, Common Tags are references to unique, well-defined concepts, complete with metadata and their own URLs. With Common Tag, site owners can more easily create topic hubs, cross-promote their content, and enrich their pages with free data, images and widgets.

I hope that "Smarter" is going to be a key tag for the Web 3.0, and yet I think "More Open, More Ubiquitous, with even More Information (Overload) and a little Smarter" is what it's really going to be. We'll have to wait till "Web 4.0" for a web that really is stepwise more intelligent, one that could really be called semantic and hold the hidden promises of a "Semantic Web". And the reason I believe this is that the community is focused on linking more stuff together in new ways and breaking down data siloes, much more than it is focused on creating new, smarter filters for all the data that's going to be made accessible that way.

eritrix is the Internet Archive's open-source, extensible, web-scale, archival-quality web crawler project.

ESSENCE is the world's first global climate collective intelligence event - designed to bring together scientists, industrialists, campaigners and policy makers, and the emerging set of web-based sensemaking tools, to pool and deepen our understanding of the issues and options facing the UN Climate Change Conference in Copenhagen in December 2009.

With formal negotiations on the new international climate change treaty due to open in three weeks time, Independent readers are starting to work with the Debategraph community to develop a comprehensive map of the issues around climate change that are confronting the negotiators.