The project continues. The spirit of the project rests on the notion that
it is time for many to build variants of an OHS so that we will have lots to
compare and discuss once a "real" OHS gets off the ground.
My version holds everything to be part of an OHS. But, I separate out the
three categories as described by Lee Iverson:
Context -- user stuff
Content -- raw data
Knowledge -- ontologies, etc
I have combined Content and Knowledge into what I call the DKR: dynamic
because everything (in my version) is represented internally as topic maps
in a relational database. InContext, there exists a Topic Maps tab, an IBIS
tab, and an SDS tab. Later, there will be TSC, Augment, etc, tabs. The
common interlingua between Context and DKR is XML messages, with the "cargo"
written in XTM format. Context, called client, talks to a DKR server, which
couples client to jLinda4, a Linda-like coordination system. From there,
DKR, which is also a jLinda4 client, process persistence and knowledge
issues. By coordinating with jLinda4, the system can accept many clients,
and many DKR servers. In some sense, jLinda4 becomes a kind of Von Neumann
bottleneck. Film at 11...on that one:-)
Progress to date: got client and server to talk to jLinda4. Client and
server (prior to addition of jLinda4) already could manipulate topic maps:
display them, create and edit them, and delete them from the database. Now,
to get the tuples working!
It is my hope that others will begin hacking their own rendition of an OHS
as soon as possible.
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