Recently however, the Linked Data paradigm - a more lightweight and pragmatic approach for integrating information on the Web - gained traction. It is based on representing information in facts consisting of subject, predicate and object (aka RDF triples), publishing these on the Web and interlinking them by using the same mechanism as linking between web pages (via URIs). With more than 20 billion facts thus already published as Linked Open Data (LOD) the document Web is enriched with a data commons comprising, for example, all the BBC programming, Wikipedia as a structured knowledge base (DBpedia) and statistical information from Eurostat and the US census.
\nCo-funded by the European Union with 6.5 Million Euro as well as by companies and research institutions from 6 European countries the project LOD2 aims to realize the Web of Linked Data by developing crucial technological building blocks for the application of the Linked Data paradigm in companies, Web communities and governmental institutions. In particular, the LOD2 project will develop:
\nThe resulting tools, methods and data sets have the potential to change the Web as we know it today. This makes LOD2 relevant for researchers, industry and citizens alike. Whether it is about the efficient integration of enterprise data, the open-standardized access to scientific publications and experiment data or the opening of governmental data silos for the creative use by citizens, LOD2 will improve the usability of the Web for integrating heterogeneous information.
\nThe 4-year collaborative research and development project, which is coordinated by the AKSW research group from Universität Leipzig starts in September 2010. Involves the partners Centrum Wiskunde & Informatica from the Netherlands, National University of Ireland, Galway, Freie Universität Berlin, UK-based OpenLink Software, Semantic Web Company from Vienna, the Belgian IT service providerTenForce, the french specialist for Enterprise search Exalead, the international publishing house Wolters Kluwer as well as the non-profit NGO Open Knowledge Foundation.
\nFor companies and organizations owning large datasets of public interest and interested in publishing and interlinking these on the Data Web, the LOD2 partners offer a Linked Open Data Starter Service (LODS). The application deadline for this free consulting and development support is 15th of December 2010. Further information is available from the LOD2 website http://lod2.eu.
\n]]>Open Government Data Track
\nOpen Track
\n
We thank all participants for their submissions, which were of extraordinary high quality, and we also thank the members of the reviewer committee for their help in selecting the winners. We are also increadibly thankful to the sponsors of this years prices: Wolters Kluwer, Semantic Universe.
\nWe are very looking forward to next year’s challenge, which will again be organized in conjunction with the annual I-Semantics conference in Graz in September 2011.
\n]]>DL-Learner can be used to:
\nI\u2019d like to thank all contributors, in particular active developers and everyone who sent us valuable feedback.
\nThe tool can be be downloaded here.
\n]]>This networking session will discuss how public access to government data \u2013 crucial for an open and transparent society \u2013 can be improved.
\nThis session has been proposed by IT professionals, scientists and government representatives organised \u2013 under the auspices of the Open Knowledge Foundation \u2013 as the Working Group on EU Open Data. It aims to establish a forum for networking and exchanging ideas with regard to publishing and linking governmental data, identifying technological developments and showcasing successful cases of linked governmental data. Developments in linked data could help further integrate information published by regional, national and European public administrations. The session is thematically relevant to a number of pillars within the Framework Programme as well as the Competitiveness and Innovation Programme.
\n]]>| \n ${xmlButton}\n ${title}\n \n ${date}\n \n | \n
| \n ${image}\n ${items}\n ${input}\n \n RSS box by p3k.org.\n \n | \n
', str, '
');
}
org.p3k.RssBox = function() {
var ref;
var ISOPATTERN = /([0-9]{4})-([0-9]{2})-([0-9]{2})T([0-9:]+).*$/;
var data = org.p3k;
data.defaults = {
url: "http://blog.p3k.org/rss",
maxItems: 7,
width: 200,
align: "",
frameColor: "black",
titleBarColor: "lightblue",
titleBarTextColor: "black",
boxFillColor: "white",
textColor: "black",
showXmlButton: "",
compact: ""
};
var baseUri = data.baseUri;
var getColor = function(str) {
if (str.length === 6 && parseInt(str, 16) && str.indexOf("#") !== 0) {
str = "#" + str;
}
return str.toLowerCase();
}
var value;
for (var i in data.defaults) {
value = data.param[i];
if (!value || value.length === 0) {
data.param[i] = data.defaults[i];
} else if (i.indexOf("Color") > 0) {
data.param[i] = getColor(value);
}
}
// FIXME: Ugly work-around for many boxes using too small width
// values because the former version did not show the exact output.
if (data.param.javascript && data.param.width < 200) {
data.param.width = 200;
}
// Remove obsolete parameters from param and query
delete data.param.javascript;
data.query = data.query.replace("javascript=true", "");
var NAMESPACES = {
dc: "http://purl.org/dc/elements/1.1/",
rdf: "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
};
var getUrl = function(url) {
url = baseUri + "proxy.r?" + encodeURIComponent(url);
var HttpRequest = function() {
return (typeof XMLHttpRequest !== "undefined") ?
new XMLHttpRequest() : new ActiveXObject("Msxml2.XMLHTTP");
}
var request = new HttpRequest();
request.open("GET", url, false);
request.send(null);
if (!request.getResponseHeader("Date")) {
var cached = request;
var ifModifiedSince = cached.getResponseHeader("Last-Modified") ||
new Date(0); // January 1, 1970
request = new HttpRequest();
request.open("GET", url, false);
request.setRequestHeader("If-Modified-Since", ifModifiedSince);
request.send("");
if (request.status === 304) {
request = cached;
}
}
return request;
}
var getDocument = function(source) {
if (source) {
if (document.implementation.createDocument) {
var parser = new DOMParser();
var doc = parser.parseFromString(source, "text/xml");
return doc;
} else if (window.ActiveXObject) {
var doc = new ActiveXObject("Microsoft.XMLDOM");
doc.async = "false";
doc.loadXML(source);
return doc;
}
}
return null;
}
var getError = function() {
var msg = null, root;
if (!xml || data.message) {
msg = data.message || "Unknown error.";
} else if (xml.parseError && xml.parseError.errorCode) {
msg = xml.parseError.reason; // IExplore
} else if (root = xml.documentElement) {
var errorNode;
if (root.nodeName === "parsererror") {
msg = xml.documentElement.textContent; // Mozilla
} else if ((errorNode = root.childNodes[0]) &&
errorNode.nodeName === "parsererror") {
msg = errorNode.textContent; // Safari
} else if (!/rss|rdf|scriptingNews/i.test(xml.documentElement.nodeName)) {
msg = "Incompatible data format. Are you sure this is an RSS feed?";
}
}
return msg;
}
var getNode = function(parent, name, namespace) {
if (namespace) {
if (typeof parent.getElementsByTagNameNS === "undefined") {
var elements = parent.getElementsByTagName(namespace + ":" + name);
} else {
var elements = parent.getElementsByTagNameNS(NAMESPACES[namespace], name);
}
} else {
var elements = parent.getElementsByTagName(name);
}
if (elements && elements[0]) {
return elements[0];
}
return null;
}
var getText = function(node) {
if (node && node.childNodes && node.childNodes.length > 0) {
return node.childNodes[0].nodeValue || "";
}
return "";
}
var trim = function(str) {
if (str) {
return str.replace(/^\s*(\S*)\s*$/, "$1");
}
return "";
}
var padZero = function(n) {
if (n < 10) {
return "0" + n
}
return n;
}
var encodeXml = function(str) {
if (!str) {
return "";
}
return str.replace(//g, ">").replace(/&/g, "&");
}
var render = function(template, param) {
if (!template || !param) {
return template;
}
template = template.replace(/\$\{([^}]+)\}/g, function() {
var key = arguments[1];
return param[key] || "";
});
return template;
}
var renderDate = function(date) {
if (date.constructor !== Date) {
var str = String(date);
var millis = Date.parse(str.replace(ISOPATTERN, "$1/$2/$3 $4"));
if (millis) {
date = new Date(millis);
} else {
date = new Date;
}
}
return render(data.date, {
year: date.getFullYear(),
month: padZero(date.getMonth() + 1),
day: padZero(date.getDate()),
hours: padZero(date.getHours()),
minutes: padZero(date.getMinutes()),
seconds: padZero(date.getSeconds()),
timeZone: "" // date.getTimezoneOffset()
});
}
var renderButtons = function(enclosure, source) {
var result = "";
if (enclosure && enclosure.link) {
result += render(data.image, {
source: baseUri + "enclosure.gif",
title: enclosure.type,
link: encodeURI(enclosure.link),
width: 13,
height: 16
});
}
if (source && source.link) {
result += render(data.image, {
source: baseUri + "source.gif",
title: source.title,
link: encodeURI(source.link),
width: 15,
height: 15
});
}
return result;
}
var param = data.param;
var rss = data.rss = {items: []};
var xml = getDocument(data.xml);
rss.error = getError();
if (rss.error !== null) {
xml = getDocument(render(data.error, {
link: baseUri + "?" + encodeXml(data.query),
message: encodeXml(rss.error)
}));
param.compact = 0;
param.showXmlButton = 1;
}
var root = xml.documentElement;
var type = root.nodeName;
if (type === "scriptingNews") {
var channel = getNode(xml, "header");
rss.format = "Scripting News";
rss.version = getText(getNode(channel, "scriptingNewsVersion"));
rss.title = getText(getNode(channel, "channelTitle"));
rss.description = getText(getNode(channel, "channelDescription"));
rss.link = getText(getNode(channel, "channelLink"));
if (ref = getText(getNode(channel, "imageUrl"))) {
ref = rss.image = {source: ref};
ref.title = getText(getNode(channel, "imageTitle"));
ref.link = getText(getNode(channel, "imageLink"));
ref.width = getText(getNode(channel, "imageWidth"));
ref.height = getText(getNode(channel, "imageHeight"));
ref.description = getText(getNode(channel, "imageCaption"));
}
} else {
var channel = getNode(xml, "channel");
rss.format = "RSS";
rss.version = (type === "rdf:RDF") ? "1.0" :
root.getAttribute("version");
rss.title = getText(getNode(channel, "title"));
rss.description = getText(getNode(channel, "description"));
rss.link = getText(getNode(channel, "link"));
var image = getNode(xml, "image");
if (image) {
ref = rss.image = {};
ref.source = getText(getNode(image, "url"));
ref.title = getText(getNode(image, "title"));
ref.link = getText(getNode(image, "link"));
ref.width = getText(getNode(image, "width"));
ref.height = getText(getNode(image, "height"));
ref.description = getText(getNode(image, "description"));
}
}
if (type === "rdf:RDF") {
rss.date = renderDate(getText(getNode(channel, "date", "dc")) || data.modified);
rss.rights = getText(getNode(channel, "creator", "dc"));
var input = getNode(root, "textinput");
if (input && !getNode(input, "link")) {
input = root.getElementsByTagName("textinput")[1];
}
if (input) {
ref = rss.input = {};
ref.link = getText(getNode(input, "link"));
ref.description = getText(getNode(input, "description"));
ref.name = getText(getNode(input, "name"));
ref.title = getText(getNode(input, "title"));
}
} else {
rss.date = renderDate(getText(getNode(channel, "lastBuildDate") || getText(getNode(channel, "pubDate"))) || data.modified);
rss.rights = getText(getNode(channel, "copyright"));
}
var item, text, node;
var items = xml.getElementsByTagName("item");
for (var i=0; i
" : "",
description: (!param.compact || !item.title) && item.description,
buttons: renderButtons(item.enclosure, item.source)
});
}
var box = render(data.box, {
title: rss.link ? render(data.link, {
link: encodeURI(rss.link),
text: rss.title,
'class': "rssBoxTitle",
style: "color: " + param.titleBarTextColor
}) : rss.title,
description: rss.description,
items: items,
xmlButton: param.showXmlButton && render(data.image, {
link: param.url,
source: baseUri + "rss.png",
title: rss.format + " " + rss.version,
width: 16,
height: 16,
align: "right",
hspace: 3
}),
image: !param.compact && rss.image && render(data.image, {
link: encodeURI(rss.image.link),
source: rss.image.source,
width: rss.image.width,
height: rss.image.height,
title: rss.image.title,
align: "right",
valign: "baseline",
hspace: 5,
vspace: 5
}),
input: !param.compact && rss.input && render(data.input, {
link: encodeURI(rss.input.link),
description: rss.input.description,
name: rss.input.name,
title: rss.input.title
}),
date: rss.date,
width: param.width,
frameColor: param.frameColor,
fontFace: param.fontFace,
align: param.align,
titleBarColor: param.titleBarColor,
titleBarTextColor: param.titleBarTextColor,
boxFillColor: param.boxFillColor,
textColor: param.textColor
});
if (!window.rssBoxSetup) {
document.write(box);
}
return box;
};
org.p3k.RssBox();