Using human-friendly terms should not be a problem, if there is
even a minimum of common collegiality in the process. Whenever there is a
dispute about whether some term should label one concept or another in one
particular ontology, that bare term should be left unused and more specific
variants can be used for concept representations that have different
definitions. So, instead of, e.g. a term “Process” (never defined the same way
in any two upper ontologies I have seen), we might have “ContinuousProcess” for
phenomena describable by differential equations, or “DiscontinuousProcess” for an
Event represented as a series of steps (which may be considered instantaneous,
or take some finite time, which distinction may lead to more refinement or
expansion of the labels). When more than one ontology Is being considered, the
formal way of doing this is just to use namespace prefixes so everyone can use
the same label, but specify the namespace when creating the logical
specification.
I personally really hate using numbers or gensyms for labels, as
I see no good reason not to use meaningful linguistic labels, and would rather
not have to create and refer to a “label” property to remind me what the entity
is intended to represent. The actual logical specification is of course the
definitive meaning, but it would be a waste of time to have to read that every
time one encountered an ontological entity. Linguistic labels can work just
fine, used appropriately.
Pat
Patrick Cassidy
MICRA Inc.
cassidy@xxxxxxxxx
908-561-3416
From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Ed
Barkmeyer
Sent: Tuesday, November 27, 2012 6:52 PM
To: [ontolog-forum]
Subject: Re: [ontolog-forum] doing standards [was - Re: Webby objects]
Amanda Vizedom wrote:
Yep. I have seen the same thing elsewhere, as well; even
though ontologists *know* that the concept names (vs. labels) are meaningless
to the machine, the ontologists are still human language users and slip into
various errors such as expecting names to carry a content burden and fighting
over names. I have also experienced the significant gains in usability
and efficiency that can come from using concept IDs that are not easily interpreted
by humans (e.g., hexadecimals at Convera). IMHO, that is the way to go -- it's
amazing how much confusion is avoided when names are obviously there as unique
handles but carry no meaning, and N-N mapping between NL terms and ontology
terms is practiced and supported.
Yes, if you can get the community to maintain the discipline.
The other side of that coin is that the magic numbers become the terms of the
language spoken by the in-crowd, and it becomes a jargon that freezes out those
with an interest in the domain but lack that time or patience to deal with the
black speech. Supply-chain software people know what a DELJIT and an
IFTMAN are. They are the codes for EDI message types (shipment
notifications and freight manifests) that have formal titles, aliases, and
relatively clear textual descriptions, but the community doesn't use the titles
or the descriptions. They pronounce the codes, which mean nothing to the
accountant or the man on the dock.
-Ed
Amanda
On Tue, Nov 27, 2012 at 5:22 PM, doug foxvog <doug@xxxxxxxxxx> wrote:
On Thu, November 22, 2012
16:59, Obrst, Leo J. wrote:
> Sure, Amanda, and that's why I (and we) advocate using natural
> language vocabularies that are linked/mapped to ontologies.
If you are referring to advocating the separation of NL
vocabularies from
ontology term names, we certainly agree. The ontology needs to express
an N-N mapping between NL terms and ontology terms.
> This was a hard lesson
> learned (initially, by others, before my time) in the DoD in the
early
> 1990s, and that I personally experienced in the metadata wars of the
> 2000s, where people will fight to the death to include their
"words",
> mistaking these for the concepts behind them.*
This was a fight that the Cyc project thought it had solved
in the
early '90s by establishing the 2-way mappings between NL & ontology
terms. However, as Amanda well remembers, as new people came into
Cycorp, there were continual fights over what a term in the ontology
means -- and what it *should* mean, even when each of the competing
meanings were worthwhile concepts to have in the ontology. This has
obviously continued after we both left. You can find lots of terms in
OpenCyc whose names could be interpreted in multiple ways, yet whose
#$comments do little more than restate the name. Often, the statements
remaining about the concepts in OpenCyc are not sufficient to understand
the intended meaning of the term.
> The important point is
> that if you shoehorn peoples' semantics into "common"
vocabularies
> or ontologies (and it's worse for the latter, because then you
> obliterate their differentiating semantics, not just how they refer to
> things), they may say they will agree with that concensus, but they will
> drag their feet, and the "information-sharing" effort will
fail.
Many ontologies (e.g., the OBO ontologies) get around this
by using
numeric strings as IDs of the ontology terms, forcing people to look
at various comments and alternate names to understand what is
intended.
Also, +1 to Amanda's points, below.
-- doug foxvog
> *This also means that you need to differentiate between stakeholder
> committees and dedicated small ontology teams, where the latter work in
> the background to define the semantics they hear the committee
members
> (often domain experts) describe in the foreground.
>
> Thanks,
> Leo
>
> From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
> [mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx]
On Behalf Of Amanda
> Vizedom
> Sent: Thursday, November 22, 2012 1:23 PM
> To: [ontolog-forum]
> Subject: Re: [ontolog-forum] doing standards [was - Re: Webby objects]
>
> <climbs atop a small pile of soapboxes>
>
> (1) Controlling language -- setting and using naming standards, for
> example, -- is *much* harder than building and using shared ontologies.
> Why? Because language and naming are things humans do/use constantly, are
> part of their natural behavior, are intertwined with cognitive and
> behavioral adaptations in many ways. And standardizing the language people
> use away from their ever-adapting expert language interferes with that
> adaptation. If the job needs to be done, the tension here is (correctly)
> going to resolve in favor of the adaptation and away from the
> standardization.
>
> (2) It is a central, advantageous feature of ontological representation
> that it can enable and support shared models, shared metadata, and
> interoperability *without* requiring controlled and standardized language
> use. Not all ontology-based projects have staff with sufficient training
> to understand and use that advantage. Those that don't use it end up
> bogged down in naming and language debates.
>
> (3) Available out-of-the-box tools (and standard KR languages) need to
> grow to support and emphasize this feature and ontologies (for example,
> via built-in support for specifying multiple labels for a concept, with
> lexical and localization information for those labels, and support for
> viewing/browsing an ontology with some specific localization used to
> select display labels. This is pretty easy compared to many other
> ontology-interaction problems. But it isn't there in the off-the-shelf
> stuff (in contrast, it *is* there in a range of commercial/proprietary
> and/or in-house tools that have to deal with multilingual, business
> vertical, or other localizations.
>
> (4) One reason people don't use ontologies more is because there is no
> consensus on quality and methodology, and they don't know who to trust.
> Those who say the have the One Methodology To Rule Them All are at best no
> better than everyone else at delivering something useful. That's because
> we *don't* need One Methodology To Rule Them All. We need a good
> understanding of what ontology features matter to what kinds of projects:
> that is, an understanding of what it means for an ontology to be suitable
> for an application, fit for a particular use case.
>
> (5) Until we build that kind of understanding -- at least a start -- some
> people who could benefit from ontology applications will continue to balk
> at the lack of clarity, while other people will go ahead but invest in
> ontology that is mismatched to the requirements. The latter experiences
> make the climate for ontology adoption worse.
>
> (6) I suggest that it should be very high on our priority list to work on
> building that shared understanding of the relationships between use case
> features and suitable ontology features. We can really only do that
> effectively as a community, sharing experiences and collaborating on the
> lessons learned. There are enough of us, across industries and sectors, to
> get going and make progress on this. There are also many who won't share
> just yet because they aren't sure whether the payoff of sharing outweighs
> their trained resistance to making in-house knowledge public. We can still
> move, and try to pick them up as we gain momentum.
>
> (7) A good ontologist can, in fact, come in and build something and make a
> difference in two weeks. BUT this assumes that it is clear what the
> ontology is for, how it will be used, what requirements come from
> downstream, and what sources are to be regarded as authoritative, AND that
> the ontologists is provided access to those sources. The reality is that
> the ontologist often walks into a situation in which few or none of those
> conditions are met. Sometimes it just hasn't occurred to anyone to do
> them; sometimes it has but no one knows how. Sometimes an experienced
> ontologist is actually there who knows how, but isn't give the authority
> or resource access to do this requirements identification. Result: value
> not delivered. I suggest that (6) is also important because it begins to
> address this problem by building shared understanding of what use case
> features are important to identify.
>
> </climbs down from soapboxes to go check on roasting turkey>
>
> Happy Thanksgiving!
>
> Best,
> Amanda
>
>
>
> On Thu, Nov 22, 2012 at 12:17 PM, David Eddy
> <deddy@xxxxxxxxxxxxx<mailto:deddy@xxxxxxxxxxxxx>> wrote:
> Peter -
>
> On Nov 22, 2012, at 10:24 AM, Peter Yim wrote:
>
>
> The basic question is "Why aren't practitioners using
> ontologies?"
>
> Because they're really, really, really HARD, aside from the fact that
> management has no idea what all the handwaving is about much less what any
> potential value might be.
>
> Plus the little detail of there being no foundation. So ontologies
are
> very much ivory towers in the clouds, particularly in commercial IT.
> Science/bio/pharma may very well be a different story since Mother nature
> has been carving the hierarchy for a few million years. In
commercial
> systems the concept of ordered hierarchies & languages is at best a
> distant fantasy.
>
>
> It has been my direct, commercial experience with Fortune 500
> organizations that very few (approaching none) have anything approaching
> something simple as "naming standards"
(conventions—3 ring binders on
> the shelf, yes. Enforced no.). Obviously
some systems have naming
> conventions, but that was typically driven by a single motivated
> individual & is not carried over to the next systems(s).
>
> Please to acknowledge the scale here... a Fortune 500 scale organization
> will have something like 1,000 to 5,000+ IBM mainframe applications.
This
> is not counting client/server, web, *nix, iSeries, etc. Pretty much
every
> one of those applications will have uniquely opaque language.
>
>
> I would argue that if the organization does not have the discipline to
> control its language something as pie-in-the-sky as ontologies is a castle
> in the sand.
>
> The reasoning/experience is that if they're as big & important as they
are
> without naming standards, why bother.
>
> It is my assumption the same thinking & non-action carries over to the
> much more complex ontology domain.
>
> If the ontology consultant (that's singular) could show up on Monday &
> create something substantive in a week or two, AND get easy-to-use &
> understand results into the hands of the grunts, things would likely be
> different. Requiring the grunts—the data
entry/programmer/analyst folks
> doing the work—to learn yet another collection of technical languages is
> mailto:ontolog-forum-leave@xxxxxxxxxxxxxxxx<mailto:ontolog-forum-leave@xxxxxxxxxxxxxxxx>
-- Edward J. Barkmeyer Email: edbark@xxxxxxxx National Institute of Standards & Technology Systems Integration Division, Engineering Laboratory 100 Bureau Drive, Stop 8263 Tel: +1 301-975-3528 Gaithersburg, MD 20899-8263 Cel: +1 240-672-5800 "The opinions expressed above do not reflect consensus of NIST, and have not been reviewed by any Government authority."
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