From: Dieter Fensel (dieter@cs.vu.nl)
Date: 05/07/01
Hi all, I will not be able to make it for the phone conference, however, I would like to input three major issues concerning DAML+OIL I have (based on various discussions at WWW10). 1. Frame-based look and feel One of the major design decision in OIL was to make it look frame-like. Frames offer a modeling paradigm that helps user to write knowledge models and that helps tool builder in coming up with nice interfaces. This idea seems to got lost in the DAML+OIL transformation. 2. Layered Language Architecture In OIL, we had the idea of a layered language architecture. This has several advantages: - Applications and tools do not need to support the full-fledged language in cases it is an over-kill. - By proper upwards-compartibility, tools at the lower level understand at least parts of the knowledge models from higher levels. - You have well-defined names and definitions for sub-languages. Stefan raised this point earlier and I would recommend to go for it in DAML+OIL, too. Otherwise you either will make tool development very difficult or you end up with a bunch of tools that each support different (and not very well-defined) subsets of the language. By giving subsets a name, a clear definition, and an inclusion order you may end up in a much better world. Even in case a sublanguage may have from a logical point of view the same expressiveness this still makes much sense. Two languages that may look the same for reasoning support tools may look very different for editors when the syntax of one is simplified. 3. The name "D"AML+OIL After two weeks reading newspapers from China I really wonder whether the "D" in DAML+OIL is such a good move for an international used language. Greetings, Dieter ---------------------------------------------------------------- Dieter Fensel Division of Mathematics & Computer Science, Vrije Universiteit Amsterdam, De Boelelaan 1081a, 1081 HV Amsterdam, NL The Netherlands Room number U3.25. Tel. (mobil): +31-(0)6-51850619, Fax and Answering machine: +31-(0)84-872 27 22 Email: dieter@cs.vu.nl http://www.google.com/search?q=dieter Privat: Liendenhof 64, NL-1108 HB Amsterdam, The Netherlands. Tel.: +31-(0)20-365 52 60. ---------------------------------------------------------------- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer.
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