RDF関連メモ on Planet masaka : 2011-03

Planet masakaから2011年3月のRDF／セマンティック・ウェブ関連メモを抽出してまとめたものです。

2011-03-27

• Approval of text/n3 and text/turtle Media Types http://www.ietf.org/mail-arc... RDFの構文であるTurtleとN3（Notation 3）のMIMEメディアタイプ登録が承認されたと (original post at 18:33)

2011-03-09

• The Product Types Ontology: Use Wikipedia pages for describing products or services with GoodRelations
  This service provides GoodRelations-compatible OWL DL class definitions for ca. 300,000 types of product or services that have an entry in the English Wikipedia (original post at 21:04)
• dotNetRDF - Semantic Web/RDF Library for C#/.Net
  The aim of the dotNetRDF Project is to create an Open Source .Net Library using the latest versions of the .Net Framework to provide a powerful and easy to use API for working with RDF. Our aim is to provide an effective way for working with reasonable amounts of RDF in .Net (original post at 21:01)
• How Semantic Search Is Redefining Traditional & Social Media [Mashable]
  Many communities are working on this problem, with the concept Linked Data being a central part of the conversation. Linked Data is a best practice for exposing, sharing and connecting pieces of data, information and knowledge on the Semantic Web. Since its inception, The New York Times has set itself up nicely to participate in the Semantic Web - by Erica Swallow, 2011-03-04 (original post at 18:25)

2011-03-08

• Spark library for visualizing the Semantic Web http://km.aifb.kit.edu/sites... SPARQLのクエリ結果をリスト、表、グラフなどで視覚化するJavaScriptライブラリ。HTML5のdata-*属性を使用。なかなか面白い (original post at 13:45)

2011-03-07

• HTTP Geolocation http://tools.ietf.org/html/d... 自分の位置情報をサーバーに伝えるための、リクエストヘッダの標準化案。フィールド値は、位置情報リソースのURI、geo:で直接緯度経度を表す、cid:（RFC2392）でPIDF-LOを埋め込むなど (original post at 18:15)
• Describing Linked Datasets with the VoID Vocabulary
  VoID is an RDF Schema vocabulary for expressing metadata about RDF datasets. It is intended as a bridge between the publishers and users of RDF data, with applications ranging from data discovery to cataloging and archiving of datasets - W3C IG Note, 2011-03-03 (original post at 00:00)

2011-03-06

• rdf:value history [semantic-web ml]
  fairly comprehensive, covering the use and evolution of RDF's 'value' property from Oct 1997 to the present: ....n-ary property was somehow linked to reification vocab ... qualified property value ... Dan C's suggestion of rdf:toString ... principal value of a structured resource ... no meaning on its own - by danbri, 2010-07-06 (original post at 01:11)

2011-03-03

• Linked Data: Evolving the Web into a Global Data Space
  This book gives an overview of the principles of Linked Data as well as the Web of Data that has emerged through the application of these principles. The book discusses patterns for publishing Linked Data, describes deployed Linked Data applications and examines their architecture - by Tom Heath and Christian Bizer, 2011-03 (original post at 09:57)
• a blank node issue http://lists.w3.org/Archives... ストアから取り出したサブグラフを再格納するときの扱いから始まって、スコーレム化とか、空白ノード問題の勘所が盛り沢山のスレッド。ま、主リソースにはURI使え、だろうな (original post at 09:20)

2011-03-02

• Graphs and Being and Time http://lists.w3.org/Archives... RDF仕様の定義する集合としてのグラフは、計算機で扱えない抽象グラフ。グラフトークン＝リソースなら名前も状態も空白ノード識別もOK @PatHayes（☞@_masakaの件の震源地） (original post at 20:49)

2011-03-01

• @kendall ah, it'll be very helpful if you point out the errors on the semanticoverflow page (original post at 23:37)
• Modelling choices affecting reasoning performance? http://www.semanticoverflow.... 多数の概念のモデリングで、クラス扱いと個体とで推論速度は？→推論エンジンによって違う、OWL2プロファイルの選択も大きい、など (original post at 22:49)
• Wedataでページ内のデータ記述パターンXPathを蓄積して、AutoPagerizeならぬAutoRDF-ize。集合知からLOD。ぜひやりたい #jeitalod (original post at 18:22)