June 1997
Intermediate to advanced
506 pages
14h 29m
English
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Appendix D. The PICS Specification
The PICS specification introduced in Chapter 17, consists of two parts:
A specification for the protocols that must be supported by a rating service. This specification is located at http://w3.org/PICS/services.html.
A specification for the format of the labels themselves. This specification is located at http://w3.org/PICS/labels.html.
An excellent article describing PICS is “PICS: Internet Access Controls Without Censorship,” by Paul Resnick and James Miller, Communications of the ACM, October 1996, p. 87. The online version of the article appears at http://w3.org/PICS/iacwcv2.html.
Rating Services
The PICS rating service specifications are designed to enable many different kinds of ratings services on the World Wide Web. A rating service is any person, organization, or other entity that issues ratings. Ratings can be distributed with the document being rated, by a third-party site, on a CD-ROM, or by any other electronic means.
The PICS standard specifies a syntax for text files that describe the different kinds of ratings that a rating service can issue. This lets computer programs automatically parse the kinds of ratings that a service provides.
In their article describing PICS, Resnick and Miller create a sample PICS rating service based on the MPAA’s movie-rating scheme:
((PICS-version 1.0) (rating-system "http://moviescale.org/Ratings/Description/") (rating-service "http://moviescale.org/v1.0") (icon "icons/moviescale.gif") (name "The Movies ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.