ConferenceCall 2012 11 01

= EarthScienceOntolog: Panel Session-04 - Thu 2012-11-01 =

Mini-Series Theme: An Earth Science Ontology Dialog ("EarthScienceOntolog")

Session Topic: A Review of Ontologies for Earth Sciences

Session Co-chairs: Dr. DaliaVaranka (USGS) and Dr. MarkSchildhauer (NCEAS, UC Santa Barbara) -  intro slides

Panelists / Briefings:


 * Dr. LuisBermudez (OGC) - "Use of Ontologies within the Open Geospatial Consortium (OGC)"  slides
 * Dr. BoyanBrodaric (Geological Survey of Canada) - "Toward an integrated surface and subsurface water ontology"  slides
 * Dr. NormanMorrison (U of Manchester, UK) - "The Environment Ontology: What sort of a place was it?"  slides
 * Mr. ThomasHuang (JPL/NASA) - "From Modeling the Earth to Terrain Simulation"  slides
 * Dr. MarkSchildhauer (UC Santa Barbara) - "Where do we go from here with Earth and Environmental Science Ontologies?" (joint work by MarkSchildhauer & BenAdams) slides

Archives:


 * Abstract
 * Agenda
 * Prepared presentation material (slides) can be accessed by clicking on each of the title links below:
 * [ 0-Chair ] . [ 1-Bermudez ] . [ 2-Brodaric ] . [ 3-Morrison ] . [ 4-Huang ] . [ 5-Schildhauer ]
 * Audio recording of the session ... [ 1:49:56 ; mp3 ; 12.58 MB ]
 * its best that you listen to the session while having the respective presentations (linked above) opened in front of you. You'll be prompted to advance slides by the speaker.
 * transcript of the online chat during the session
 * Additional Resources

Abstract
A Review of Ontologies for Earth Sciences - intro slides

This is the 4th session of the Joint EarthCube-Ontolog Mini-series on "Ontology and Semantic Technology for the Earth Science Community" - a series of panel sessions dubbed: "EarthScienceOntolog" - an Earth Science Ontology Dialog.

This mini-series of events are co-organized/supported by members of the EarthCube community, Ontolog community, SOCoP community, IAOA community.

Challenges in the earth sciences to meet research and societal needs require creative ways of integrating data for complex analysis. This session is the 4th in a series of informative presentations to bring science and ontology communities together in an exchange of ideas and collaborative networks. This session will look into some of the current ontology efforts in the earth and environmental sciences, and showcase examples of earth science problems being tackled by the use of ontologies for synthesis and exploratory knowledge discovery.

More details about this mini-series at: EarthScienceOntolog (home page for this mini-series)

Briefings:

 * Dr. LuisBermudez (OGC) - "Use of Ontologies within the Open Geospatial Consortium (OGC)"  slides
 * Abstract: ... This presentation will provide an overview of ontologies been used by OGC. It will discuss the formal representations of concepts within OGC standards and the ontology behind the new GeoSPARQL.


 * Dr. BoyanBrodaric (Geological Survey of Canada) - "Toward an integrated surface and subsurface water ontology"  slides
 * Abstract: ... Pressing scientific and societal issues, coupled with the increasing availability of water data, require an integrated approach to surface and subsurface water representations. However, emerging representations are largely disconnected at present, most notably within geospatial data standards, thus impeding joint use of data for key aspects such as estimating water balances. This presentation discusses work in progress on the development of an ontology for these water domains. It identifies five basic primitives common to the domains and illustrates how these can be specialized from DOCLE toward an integrated water ontology.


 * Dr. NormanMorrison (U of Manchester, UK) - "The Environment Ontology: What sort of a place was it?"  slides
 * Abstract: ... The Environment Ontology (EnvO) is a community-developed ontology which provides a controlled, structured approach to support the annotation of any organism or biological sample with environment descriptors. EnvO contains terms for biomes, environmental features, and environmental material which enable the description of environments from coarse to fine levels of granularity. We hope that the community will adopt EnvO and benefit from its potential to promote standardised data integration and access. As an open project, we welcome your use of and participation in this project at http://www.environmentontology.org


 * Mr. ThomasHuang (JPL/NASA) - "From Modeling the Earth to Terrain Simulation""  slides
 * Abstract: ... Using knowledgebase technology to drive design decisions and as an instrument for validation not only cuts cost in product development, but it also enables much more thorough validation of the design prior to fabrication. An ongoing development effort is underway in building a knowledgebase system to model terrains for vehicle designs.  The popular Semantic Web for Earth and Environmental Terminology (SWEET) ontologies is a collection of ontologies and concepts design to improve discovery and application of Earth science data, which provides the foundation in modeling such ontological system.  This talk presents a brief overview on SWEET and discusses some of the designs and challenges in building this domain knowledge system.


 * Dr. MarkSchildhauer & Mr. BenjaminAdams (NCEAS, UC Santa Barbara) - "Where do we go from here with Earth and Environmental Science Ontologies?"  slides
 * Abstract: ... An ecosystem of Earth and environmental science vocabularies, markup languages, and ontologies has arisen in recent years. These representations of the meanings of Earth science terms vary greatly in thematic scope, intended uses, foundational design principles, and axiomatic structures and inferencing capabilities.  In this talk we identify some important considerations as we move forward in developing semantic cyberinfrastructure for the Earth and environmental sciences.  Common issues that we will address include the need for definitions of terms that come from authoritative sources, better use of richer, formalized representations for describing relations among concepts (such as disjoint, classes with two parents, etc.), and a need for clearer governance mechanisms that enable systematic approaches to evaluating, populating, updating and using vocabularies and ontologies.  We will conclude with thoughts on the possibilities and value of harmonizing the numerous ongoing community semantic development efforts, rather than continuing to create a new Babel of semantically enriched but mutually incomprehensible dialects.

Agenda
EarthScienceOntolog - Panel Session-04


 * Session Format: this is a virtual session conducted over an augmented conference call


 * 1. Opening (co-chair) - DaliaVaranka [10 min.] ... [ slides ]
 * 2. Panel briefings - LuisBermudez, BoyanBrodaric, NormanMorrison, ThomasHuang, MarkSchildhauer - [12~15 min. each]
 * 3. Q & A and open discussion [All: ~30 min.] -- please refer to process above
 * 4. Wrap-up / Announcements - (co-chairs) - MarkSchildhauer [5 min.]

Proceedings:
Please refer to the [ above]

IM Chat Transcript captured during the session:

see raw transcript here.

(for better clarity, the version below is a re-organized and lightly edited chat-transcript.) Participants are welcome to make light edits to their own contributions as they see fit.

-- begin in-session chat-transcript --

[09:10] PeterYim: Welcome to the

= EarthScienceOntolog: Panel Session-4 - Thu 2012-11-01 =

Mini-Series Theme: An Earth Science Ontology Dialog ("EarthScienceOntolog")

Session Topic: A Review of Ontologies for Earth Sciences

Session Co-chairs:


 * Dr. DaliaVaranka (USGS) and Dr. MarkSchildhauer (NCEAS, UCSB)

Panelists:


 * Dr. LuisBermudez (OGC) - "Use of Ontologies within the Open Geospatial Consortium (OGC)"

water ontology"
 * Dr. BoyanBrodaric (Geological Survey of Canada) - "Toward an integrated surface and subsurface

it?"
 * Dr. NormanMorrison (U of Manchester, UK) - "The Environment Ontology: What sort of a place was


 * Dr. ThomasHuang (JPL/NASA) - "From Modeling the Earth to Terrain Simulation"

Science Ontologies?" (a joint work by MarkSchildhauer & BenAdams)
 * Dr. MarkSchildhauer (UC Santa Barbara) - "Where do we go from here with Earth and Environmental

Logistics:

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Proceedings:
[09:14] anonymous morphed into BrunoEmond

[09:20] anonymous morphed into DeborahNichols

[09:21] anonymous morphed into BenAdams

[09:25] anonymous1 morphed into CeciliaZanniMerk

[09:28] anonymous1 morphed into TomTinsley

[09:30] anonymous1 morphed into JoelSachs

[09:30] anonymous2 morphed into GenhanChen

[09:32] Dan morphed into DanDong

[09:32] anonymous2 morphed into FranLightsom

[09:32] anonymous1 morphed into LuisBermudez

[09:32] NormanMorrison morphed into NormanMorrison

[09:32] anonymous4 morphed into DaliaVaranka

[09:32] anonymous5 morphed into BoyanBrodaric

[09:32] anonymous3 morphed into TorstenHahmann

[09:32] DeborahNichols morphed into DeborahLNichols

[09:33] anonymous morphed into MarshallXMa

[09:34] anonymous1 morphed into HilmarLapp

[09:35] anonymous morphed into SemirSarajlic

[09:35] anonymous1 morphed into Uma

[09:36] anonymous2 morphed into JoelBender

[09:38] anonymous1 morphed into KrzysztofJanowicz

[09:38] anonymous2 morphed into AlexSorokine

[09:38] SemirSarajlic morphed into SemirSarajlic

[09:40] anonymous morphed into DeborahMacPherson

[09:40] anonymous1 morphed into DeborahMcGuinness

[09:41] anonymous morphed into YanLiu

[09:43] anonymous morphed into Whitenack

[09:40] PeterYim: == DaliaVaranka opening the session with the intro slides ...

[09:41] List of members: AlexSorokine, AlexShkotin, Ben Adams, BobbinTeegarden, BobSmith, BoyanBrodaric, BrunoEmond, CeciliaZanniMerk, ChuckWard, DaliaVaranka, DanDong, DavidValentine, DeborahMcGuinness, DeborahLNichols, DeborahMacPherson, FrankOlken, FranLightsom, GaryBergCross, GenhanChen, HilmarLapp, JoelSachs, JoelBender, KenBaclawski, KrzysztofJanowicz, LuisBermudez, MarkSchildhauer, MarshallXMa, NormanMorrison, PeterYim, ScottHills, SemirSarajlic, TerryLongstreth, ToddSchneider, TomTinsley, TorstenHahmann, YanLiu, Uma, vnc2,

[09:44] PeterYim: == LuisBermudez presenting ...

[09:46] PeterYim: whoever posted into the box next to the "hand" button, please re-post into the editing box on the left of the "send" button

[09:47] PeterYim: your question: "is there chat support ..." - the answer is, the in-session chat-support is right here; after the session, the conversation can continue - see: http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2012_11_01#nid3HA5

[09:47] anonymous morphed into CarlosRueda

[09:48] anonymous morphed into KrishnaSinha

[09:48] anonymous1 morphed into Cyber-ShARE

[09:51] NormanMorrison: Out of interest, is there a twitter hashtag in use for the session ... [ PeterYim: not yet, Norman ]

[09:53] ToddSchneider: Luis, does OGC recommend use of, or alignment to, a foundational ontology to facilitate interoperability or integration?

[10:15] LuisBermudez: Hi Todd. OGC doesn't currently recommended alignment to a foundational ontology. The only related OGC standard (recommendation) is GeoSPARQL. My sense is that we cannot call it a foundational ontology.

[10:17] ToddSchneider: Luis, is OGC considering such a recommendation? I'm sure it would help, eventually:)

[10:20] LuisBermudez: Todd, I will take your recommendation back to OGC.

[10:04] PeterYim: @LuisBermudez - what open "use license" is used (by default) on OGC's open Intellectual Properties (IP's)

[10:20] LuisBermudez: Peter, OGC IP document is here: http://portal.opengeospatial.org/files/?artifact_id=32268

[10:08] PeterYim: == BoyanBrodaric presenting ...

[10:10] anonymous morphed into ThomasHuang

[10:14] anonymous morphed into DougFoxvog

[10:29] KrishnaSinha: KrishnaSinha :Boyan, is it possible to extend this to oceans? Are there any obvious links?

[10:31] BoyanBrodaric: Krishna---we haven't looked at oceans, but my sense is that at least some of it is directly applicable. Boyan

[10:28] PeterYim: == NormanMorrison presenting ...

[10:31] GaryBergCross: For people interested in working more on semantics of a container idea it is a topic at the Nov 28-30 workshop at USGS in Reston VA see http://vocamp.org/wiki/GeoVoCampSOCoP2012

[10:38] TorstenHahmann: Krisha, I guess it depends on what exactly you want to model. For example reefs or underwater ridges (as Norman is talking about) could be modeled similarly using certain kinds of voids (hollows) based on containment.

[10:47] NormanMorrison: Torsten, Boyan & Krishna, yes, it was encouraging to see that we have independently adopted the same formalism of (voids) holes and containment.

[10:50] MarkSchildhauer: interesting to know, though, whether these formalisms are identical or merely similar

[11:02] TorstenHahmann: Mark, I totally agree that this is a key question. Norman: in that regard, to what extent is Envo formalized? Is it restricted to a IS-A taxonomy right now? That's what I found on the website you mentioned (in the download section).

[11:00] BoyanBrodaric: Norman---the conceptual convergence is nice to see. Do you use BFO for the hole/containment schema, or did you enhance BFO in that direction? My look at BFO in this respect is that it has some hooks that need fleshing out.

[11:11] NormanMorrison: Torsten: Yes, EnvO does leverage it's concepts and relations from BFO. There is an 'EnvO2' in the pipeline that will do so more rigourously.

[11:08] GaryBergCross: The connection to BFO suggests that EnvO leverages its concepts and relations.

[10:44] GaryBergCross: @Norman does EnvO cover the idea of a site as in ecological site or other types of sites?

[10:55] NormanMorrison: @Gary yes we have sites represented in EnvO, but I would say this is an area that is not that well covered. We also incorporate a number of Biome classification systems that are non orthogonal. This is certainly an area that would benefit from further work.

[11:01] GaryBergCross: @Norman Thank you. Perhaps we can exchange ideas about this later. Site is a topic at the Nov 28-30 workshop at USGS in Reston VA see http://vocamp.org/wiki/GeoVoCampSOCoP2012

[10:45] PeterYim: @Norman (& all) - your slides are now updated (in particular the garble on slide#6 is now gone)

[10:45] PeterYim: == ThomasHuang presenting ...

[11:07] PeterYim: == MarkSchildhauer presenting ...

[11:11] AlexShkotin: What about this authority http://www.merriam-webster.com/dictionary/definition?

[11:11] PeterYim: @Mark, Ben & All - ref. your slides #3 & 4 - there is an ongoing effort under the Open Ontology Repository (OOR) initiative, that makes an attempt to build a federated network of those who are running ontology repositories, so that there can be a "logical" go-to place to access them, and where other value-added services can be applied ... among the repositories, some of those of interest to this group like MMISW-ORR, SOCoP-OOR, ORNL-DAAC, BioPortal, etc. are also on board there - see: http://oor.net/

[11:16] PeterYim: the OOR effort welcomes participation of projects that are running ontology repository ("open" ones, especially) ... join us!

[11:20] PeterYim: == Q&A and Open Discussion now ...

[11:21] GaryBergCross: Note VoCamps in spirit do try to research existing vocabularies. Then build on these refining and extending these as part of the effort.

[11:21] anonymous morphed into MyunghwaHwang

[11:22] anonymous1 morphed into AlexMirzaoff

[11:23] AlexSorokine: to Boyan: how do you treat granularity in relation to your concept of gaps and voids?

[11:36] TorstenHahmann: as follow-up to Boyan answer to Alex's question [11:23]: I suppose you meant granularity of voids? we currently only distinguish two levels of granularity: the object level (physical objects) and the matter level. Those we formalized in the FOIS paper (2012). It is a simplified version of the DOLCE concept of constituency.

[11:24] anonymous morphed into RamonaWalls

[11:23] TorstenHahmann: Btw, the ontologies Boyan and I developed will be available next week in the COLORE ontology repository (one of the OOR Peter was referring to) available at http://code.google.com/p/colore/

[11:24] GaryBergCross: @Torsten, so these are formalized in common logic?

[11:24] TorstenHahmann: @Gary: yes.

[11:24] MarkSchildhauer: thanks, Boyan...

[11:25] MichaelGruninger: It will be important to explicitly use the axioms of the ontologies so that we can show that the commonalities are more than an intuitive similarity.

[11:26] MichaelGruninger: Identical concepts in two ontologies would mean that from the axioms alone we can entail the axioms satisfied by one concept can be entailed by the axioms satisfied by the other ontology, together with specifications of the mappings

[11:27] TorstenHahmann: @Gary: for clarification: the DOLCE ontology that Boyan presented is generated from the Common Logic ontology, it obviously only captures only a subset of what we formalized in Common Logic

[11:28] GaryBergCross: @MichaelGruninger So yours and Torsten's work on spatial ontologies is an example where you have done this type of mapping and close look at axioms. Right?

[11:30] MichaelGruninger: @Gary: Exactly. The challenges posed by today's speakers is to identify all of the different ontologies that people are working on, and to figure out what the possible mappings could be

[11:28] MarkSchildhauer: http://obofoundry.org

[11:31] MarkSchildhauer: http://oor.net

[11:28] AlexShkotin: @Mark, it looks like we need to create a formal theory one for every particular science?

[11:30] MarkSchildhauer: @alex-- I see more a need for common design principles in ontology construction *across* disciplines, and shared concepts wherever possible

[11:33] BoyanBrodaric: @Alex---the degree of formality will be use-governed; for some purposes high formality it might not be necessary. But, to leverage reasoning it would be desirable.

[11:35] AlexShkotin: @Mark, it looks like common sense knowledge formalization. Like Ernst Davis.

[11:34] KrishnaSinha: MarkSchildhauer---I think developing a general ontology based solely on vocabulary is difficult to accomplish. I dont see how non specialists with respect to a given discipline could even begin to discover data.. We need something beyond just terms

[11:43] MarkSchildhauer: @Krishna-- agreed; but well-defined terms developed by experts, and currently housed in thesauri like the AGI example you pointed out to us, can be borrowed and embedded where appropriate in richer constructs? That's what I was intending, sorry it wasn't clear.

[11:33] CeciliaZanniMerk: Michael and Torsten, can I have a link or some biblio on your spatial ontologies ?

[11:37] TorstenHahmann: @Cecilia: sure, what format would you like? They are buried in the really long bibliography of my thesis.

[11:40] CeciliaZanniMerk: Torsten, if you could send me some articles, it would be great ... merk [at] unistra.fr

[11:39] CeciliaZanniMerk: Torsten, OWL and PDF will be fine ... :-D) OWL to play with, PDF to understand ... ... we have just begun to work on an urban ontology for remote sensing, and the spatial relationships are one of the key aspects

[11:43] TorstenHahmann: @cecilia: I can email you a pdf.

[11:43] CeciliaZanniMerk: @torsten : thanks ! it would be great !

[11:34] NormanMorrison: On this topic MIREOT (Minimum information to reference an external ontology term): http://obi-ontology.org/page/MIREOT

[11:34] NormanMorrison: RamonaWalls (who's online now) knows more about this

[11:36] DougFoxvog: @Michael, I think we can distinguish theories from definitional ontologies. If that is done, then different theories with different axioms could be defined, so that two terms from different ontologies can be accepted as identical concepts, even though the axioms defined for one (with one theory) are not necessarily entailed by the axioms of the other (defined with a different theory).

[11:36] DougFoxvog: This entails reifying the different theories in different theory ontologies.

[11:38] TorstenHahmann: @Luis: is there any effort to formalize the semantics of the GeoSPARQL concepts any further?

[11:44] LuisBermudez: @Torsten. The GeoSPARQL semantics are already formalized in OWL http://www.opengis.net/ont/geosparql.

[11:46] TorstenHahmann: @Luis: I meant to formalize it beyond what is already there. In particular whether to formalize the descriptions of each concepts that are currently in English, for example statements like: Exists if the subject SpatialObject spatially contains the object SpatialObject. DE-9IM: T*****FF*

[11:37] PeterYim: -- (conference call) session ended: 11:37am PDT --

[11:37] MarkSchildhauer: oops-- sorry Joel. Good point- we didn't have time to go into the usage of these ontologies, in terms of semantic annotation and mediation!

[11:40] MarkSchildhauer: @joel-- for example, one typical application of an ontology term would be, via annotation, asserting that some data value or column in a data set "IS" a (set of) instances of that term.

[11:40] PeterYim: @Joel ... would you post your question here (we can leave the chat-room going for a few more minutes) or put that out to the community for further discussion - see: http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2012_11_01#nid3HA5

[11:40] NormanMorrison: Thanks again to the organisers. As a first timer to the Ontolog session I found this to be an excellent forum and certainly hope to join future discussions. @Joel - next time perhaps... :-)

[11:41] CeciliaZanniMerk: I agree with Norman ... it was my first time also, and i've really appreciated the quality of the presentations and of the discussions ... thanks a lot !

[11:41] List of attendees: AlexMirzaoff, AlexShkotin, AlexSorokine, BenAdams, BobSmith, BobbinTeegarden, BoyanBrodaric, BrunoEmond, BrunoEmond, CarlosRueda, CeciliaZanniMerk, ChuckWard, Cyber-ShARE, DaliaVaranka, DanDong, DavidValentine, DeborahNichols, DeborahMcGuinness, DeborahLNichols, DeborahMacPherson, DougFoxvog, FranLightsom, FrankOlken, GaryBergCross, GenhanChen, JoelSachs, JoelBender, KenBaclawski, KrzysztofJanowicz, LuisBermudez, MarkSchildhauer, MarshallXMa, MichaelGruninger, MyunghwaHwang, NancyWiegand, NormanMorrison, PeterYim, RamonaWalls, ScottHills, SemirSarajlic, TerryLongstreth, ThomasHuang, ToddSchneider, TomTinsley, TorstenHahmann, Uma, Whitenack, YanLiu, HilmarLapp, KrishnaSinha, vnc2

[12:00] PeterYim: closing chat-room now!

-- end of in-session chat-transcript --


 * Further Question, Remarks & Interaction with the Community:
 * please post them to the [ Sem-cg ] listserv
 * if you are not a member of the Ontolog community (meaning to say that you are not subscribed to the [ ontolog-forum ] discussion list) yet), we cordially invite you to join us. See our "Membership" details at: http://ontolog.cim3.net/cgi-bin/wiki.pl?WikiHomePage#nid1J
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Additional Resources:

 * Homepage of this EarthScienceOntolog mini-series
 * Archive of the mini-series Kick-off session: "Value Proposition" - ConferenceCall_2012_08_23
 * Archive of the mini-series session-2: "Ontology development and application across Earth Science Lifecycle" - ConferenceCall_2012_09_06
 * Archive of the mini-series session-3: "Heterogeneity-preserving Data Interoperability: Methods and Challenges" - ConferenceCall_2012_10_11
 * EarthCube Project Homepage - http://earthcube.ning.com/
 * EarthCube "Semantics and Ontologies" workgroup - http://earthcube.ning.com/group/semantics-and-ontologies
 * EarthCube "Semantics and Ontology Community Group (Sem-cg)" Mailing List - [Sem-cg]: msg-archives ; listinfo
 * Home page of the Spatial Ontology Community of Practice (SOCoP) - http://socop.org
 * Home page of the International Association for Ontology and its Applications (IAOA) - http://iaoa.org
 * Take a look, also, at the rich body of knowledge that the Ontolog community has built out over the years, by going through the archives of noteworthy past Ontolog events.

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Conference Call Details

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 * This session, like all other Ontolog events, is open to the public. Information relating to this session is shared on this wiki page: http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2012_11_01


 * Please note that this session may be recorded, and if so, the audio archive is expected to be made available as open content, along with the proceedings of the call to our community membership and the public at-large under our prevailing open IPR policy.

Attendees

 * Attended: (including all registrants)
 * DaliaVaranka (co-chair)
 * MarkSchildhauer (co-chair)
 * LuisBermudez
 * BoyanBrodaric
 * NormanMorrison
 * ThomasHuang
 * BenAdams
 * PeterYim
 * AlexMirzaoff
 * AlexShkotin
 * AlexSorokine
 * AnneThessen
 * APatriceSeyed
 * BobArko
 * BobbinTeegarden
 * BobSmith
 * BrunoEmond
 * CeciliaZanniMerk
 * CharlesWard
 * (Cyber-ShARE)
 * DanDong
 * DavidValentine
 * DeborahMacPherson
 * DeborahMcGuinness
 * DeborahNichols
 * DougFoxvog
 * FrankOlken
 * FranLightsom
 * GaryBergCross (Gary Berg-Cross)
 * GenhanChen
 * HilmarLapp
 * JimDisbrow
 * JoelBender
 * JoelSachs
 * KarenStocks
 * KenBaclawski
 * KrishnaSinha
 * KrzysztofJanowicz
 * MarshallXMa
 * MaryWong
 * MichaelGruninger
 * MyunghwaHwang
 * NancyWiegand
 * PavithraKenjige
 * RamonaWalls
 * ScottHills
 * SemirSarajlic
 * TerryLongstreth
 * ToddSchneider
 * TomTinsley
 * TorstenHahmann
 * Uma
 * Whitenack
 * YanLiu
 * ... (add yourself back in, if you were there at the session, and missed the roll call)


 * Expecting:
 * (please add yourself to the list if you are a member of the Ontolog community, or, rsvp to  with the event title/date and your name and affiliation)


 * Regrets:
 * JuliaArmstrongDAgnese
 * FrankDAgnese
 * SimonCox
 * LeoObrst
 * CarlosRueda