#?SuikaWiki/0.9
[1] 
> [INS[[[RFC 2295]] 2.2 より抜粋]]
:neighboring variant:
A variant resource is called a neighboring variant resource of some
transparently negotiable HTTP resource if the variant resource has
a HTTP URL, and if the absolute URL of the variant resource up to
its last slash equals the absolute URL of the negotiable resource
up to its last slash, where equality is determined with the URI
comparison rules in section 3.2.3 of [1].  The property of being a
neighboring variant is important because of security considerations
(section 14.2).  Not all variants of a negotiable resource need to
be neighboring variants.  However, access to neighboring variants
can be more highly optimized by the use of remote variant selection
algorithms (section 7) and choice responses (section 10.2).

:隣接変種:[[変種資源]]が [[HTTP]] [[URL]] を持ち、その変種資源の[[絶対URL]]
の最後の[[斜線]]までが[[折衝可能資源]]の絶対 URL
の最後の斜線までと、 [[RFC 2068]] 3.2.3 の URI 比較規則に照らして等しいとき、
その変種資源は透過折衝可能 HTTP 資源の[DFN[隣接変種資源]]と呼びます。
隣接変種であるという[[特性]]は安全上の観点から重要です。
折衝可能資源の全ての変種が隣接変種である必要はありません。
しかし、隣接変種への接続は[[遠隔変種選択算法]]と[[選択肢応答]]の使用により高く最適化できます。