2003.12.15

「そろそろsemblogからsemanticの看板をはずさないといけないかなあ」について

やっと予告通りのエントリーを書き始めます.まずはこの話から.semblogという名前はsemantic weblogの略という意味でつけたので,このプロジェクトはさぞかしセマンティックWebにコミットしているのだろうと思いきや,ご存じの通り全くそんなことはない.いまやっていることはRSS等のメタデータをうまく使いたいという話ではあるけれども,RSS=セマンティックではない,ということは多くの人々から指摘されている.セマンティックWebの学会に出てみると,昔は違ったかもしれないがいまではオントロジー(うまく説明できないけど言葉と言葉の関係を厳密に定義した辞書のようなもの)を使わないとセマンティックの中に入れてもらえない感じがする.そのような状況の中で,semblogとセマンティックWebとの関連はあるのかないのかはっきりせよ,ないとすればミスリーディングではないかという話が出てきている.個人的には役に立って面白いツールができればそれでいいやん,と思わなくもないけれど,semblog.orgとしての立場を明確にしておく必要はあるだろう.
実のところsemblog.orgの目的は,プロジェクトを始めたころとは若干(かそれ以上に)変わりつつある.当初は「とりあえずセマンティックWebとWeblogをくっつけよう」という思いつきが先にあり,それが達成されたあかつきにはできないできないと言われ続けていたセマンティックWebの第一歩になるのかなという希望的観測があった.ある意味でセマンティックWeb環境の実現が目的にあたり,Weblogはそのための手段という位置づけだった.ではなぜセマンティックWebをやらねばならないかと問われると答えに窮するところがあり,自分の研究テーマだから...ぐらいしか言いようがないのがプロジェクトとしては大きな弱点だった.ならばいまはどうなのか,というと,セマンティックWebは目的ではなくなり,新しい目的ができた.そしてその目的はWeblogを扱ってみなければ(自分としては)考えつかないものだった.それがこれからsemblog.orgが標榜しようとしている「Community Web(仮称)の実現」である.このためにセマンティックWebの諸技術を利用し,Weblogを利用してやろうというのがいまの戦略である.セマンティックWebが手段の一部分に落ちた,と考えれば前段の指摘はその通り.看板はずせ,ドメイン返せとか言われたらどうしよう.

で,Community Webの話.人によっては「またまたそんな怪しげな単語を持ち出して」と思うかもしれない.まあそうかも.自分でもそう思うことがあるし.が,実際にはそんなに大層な話ではなく,Web上の情報リソースを人単位で管理してもらおう,そして人の間にリンクを張ることで構造をすっきりさせよう,というのがCommunity Webのキモである.これまでのWeb(ここではInformation Webと呼ぶ)は端的に言えば情報(HTML)とその間のリンクしかない世界である.このシンプルかつ混沌とした世界において自然言語処理とリンク構造でなんとか検索したりしているのが現状で,それなりにうまくいっているのだけれども最近ではWeblogのSEO効果などでやや破綻が見えつつある.semblogプロジェクトでは,そこに人という概念を持ち込み,人ごとの情報の整理を簡単にでもやってもらい,そのうえで人と人をつないでいく,すなわち人-情報のリンクと人-人のリンクという2階層のモデルをWebに導入しようと考えている.

抽象的すぎてよくわからないやも.しかしこれはすでに現実に存在していて,そのもっともたる例がWeblogである.多くのWeblogは1つのサイトという枠組みの中にたくさんのエントリがあって,両者はリンクされている.この場合のサイトは1つの入れ物でしかないわけだが,それを「書き手という人を代表して公開されているもの」と考えればまさにCommunity Webの基本モデルである.RNAも同じ.ある人が持つRNAという入れ物に自分の好みの情報がある程度整理されて入っており,それらが公開された状態になっている.というように,人の存在はすでにWeb上にあって,あとはそれら同士をどうつなぐかという問題になる.そこで出てくるのがFOAF.このメタデータを使って人の間のリンクをある程度リッチなかたちで表現する.Weblogサイトをまたぐエントリ間のリンクとは意味づけを変えつつ,共存させる.で,そのFOAFリンクを容易に作る方法が最新のRNAに実装されたFOAF TrackBackである.いまはRNAの付属機能ではあるが,次はWeblogの情報をFOAFに記載できるようにして,Weblog間リンクとして利用できるようにする.もちろんFOAF TrackBackだけを切り出すこともできる(けどRNAのRSSアンテナ機能も使ってほしい...).ここまでやると,Weblogで情報を発信し,RNA(と連携するglucose)でまわりの情報を収集・編集する個人,というものがFOAFで表現できるようになる.いつになるやらわからないが,こういう情報がそこらじゅうで公開され,リンクされるという状況が来たならば,果たして何ができるのか.それこそが今後のsemblog.orgの活動として問われる部分であり,いま秘かに仕込んでいる部分である.といってもすぐに立派なものはできそうにもないけれど.

これは余談になるが,semblogとセマンティックWebの関係はここにきて急速に強くなっている.原因は他でもないFOAFの導入で,出自からしてRSSみたいないい加減なフレームワークではないことが判明しつつある(あたりまえか).そのためにRDFSも調べないといけないし,OWLも調べないといけないし,どうもデータだけでは書けない部分がありそうでOWL-SとかこれはもしやWSDLで書いたほうがいいのか?とか,順調にセマンティック(やWebサービス)の階段を上がっております.いやはや.

Posted by i2k at 2003.12.15 03:59 AM

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TrackBack URI : http://www.semblog.org/mt3/mt-tb.cgi/132

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