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Ambient Information and SEM

The scope of information was discussed a little, but let's take into
consideration what it really means to have a "local" and a "global" system.

In general, there are small and large scale systems, and interactions
between the two will most likely form a huge part of the transactions
that occur on the Semantic Web. Let's define what we mean by large, medium, and
small scale systems.

Large Scale

An example of a large scale system is two companies that are undergoing
a merger needing to combine their databases. Another example would be search
engines compiling results based upon a huge range of data. Large scale Semantic
Web systems generally involve large databases, and heavy duty inference rules
and processors are required to handle the databases.

Medium Scale

Medium scale Semantic Web systems attempt to make sense out of the larger
scale Semantic Web systems, or are examples of small scale Semantic Web systems
joined together. An example of the former is a company trying to partially
understand two large scale invoice formats enough to use them together. An
example of the latter is of two address book language groups trying to
create a super-address book language.

Small Scale

Small scale Semantic Web systems are less widely discussed. By small
scale Semantic Web systems, we mean languages that will be used primarily
offline, or piles of data that will only be transferred with a limited scope,
perhaps between friends, departments, or even two companies.

Sharing data on a local level is a very powerful example of how the
Semantic Web can be useful in a myriad of situations. In the next section on evolution we shall be finding out how interactions between
the different sized systems will form a key part of the Semantic Web.

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Web 1.0 - That Geocities & Hotmail era was all about read-only content and static HTML websites. People preferred navigating the web through link directories of Yahoo! and dmoz.

Web 2.0 - This is about user-generated content and the read-write web. People are consuming as well as contributing information through blogs or sites like Flickr, YouTube, Digg, etc. The line dividing a consumer and content publisher is increasingly getting blurred in the Web 2.0 era.

Web 3.0 - This will be about semantic web (or the meaning of data), personalization (e.g. iGoogle), intelligent search and behavioral advertising among other things.

If that sounds confusing, check out some of these excellent presentations that help you understand Web 3.0 in simple English. Each takes a different approach to explain Web 3.0 and the last presentation uses an example of a "postage stamp" to explain the "semantic web".