Print

proxy

Rate it!
(1)
(1)
(0)
(0)
(0)
Rate it!
1 : excellent
1 : good
0 : so-so
0 : need improvement
0 : rubbish

In WWW world, proxy usually refers to the intermediary that retrieves information from other sources (e.g., websites) for the client. This is sensible when:

  • the client cannot directly connect to the resources, e.g., some ISPs' firewall blocks these resources erratically or deliberately;
  • the client does not want to disclose his/her info (e.g., IP address) to the resources

There are different types of proxy: web-based proxy, open proxyand tunneling.


  • + : A leading plus sign indicates that this word must be present in every object returned.
  • - : A leading minus sign indicates that this word must not be present in any row returned.
  • By default (when neither plus nor minus is specified) the word is optional, but the object that contain it will be rated higher.
  • < > : These two operators are used to change a word's contribution to the relevance value that is assigned to a row.
  • ( ) : Parentheses are used to group words into subexpressions.
  • ~ : A leading tilde acts as a negation operator, causing the word's contribution to the object relevance to be negative. It's useful for marking noise words. An object that contains such a word will be rated lower than others, but will not be excluded altogether, as it would be with the - operator.
  • * : An asterisk is the truncation operator. Unlike the other operators, it should be appended to the word, not prepended.
  • " : The phrase, that is enclosed in double quotes ", matches only objects that contain this phrase literally, as it was typed.

Member's Area

Categories

Sponsors

Shoutbox