ConferenceCall 2012 03 08

= OntologySummit2012: Session-09 - Thu 2012-03-08 =

Summit Theme: OntologySummit2012: "Ontology for Big Systems"

Track (4) Title: Large-Scale Domain Applications

Session Topic: Large-scale domain applications  Biomedical, earth & environmental science & engineering

Session Chair: Dr. TrishWhetzel (NCBO; Stanford) and Dr. SteveRay (CMU) -  intro slides

Panelists:


 * Mr. DavidPrice ( TopQuadrant ) - "Experiences from a Large Scale Ontology-Based Application Development for Oil Platforms" - slides
 * Dr. MichaelKellen (Sage Bionetworks) - "Collaborative Clinical Genomics Data Analysis with Sage Bionetworks Synapse" - slides
 * Dr. DamianGessler (iPlant Collaborative) & Dr. BlazejBulka (Clark & Parsia) - "The iPlant Collaborative Semantic Web Platform: Using OWL and SSWAP (Simple Semantic Web Architecture and Protocol) for On-Demand Semantic Pipelines" - slides
 * Dr. IlyaZaslavsky (SDSC) - "Managing observation semantics in CUAHSI Hydrologic Information System" - slides
 * Dr. LinePouchard (ORNL) - "Linked Science as a producer and consumer of big data in the Earth Sciences" - slides

Archives:


 * Abstract
 * Agenda
 * Prepared presentation material (slides) can be accessed by clicking on each of the title links below:
 * [ 0-Chair ] . [ 1-Price ] . [ 2-Kellen ] . [ 3-Gessler+Bulka ] . [ 4-Zaslavsky ] . [ 5-Pouchard ]
 * Audio recording of the session [ 1:45:21 ; mp3 ; 12.06 MB ]  ... ''(coming!)
 * transcript of the online chat during the session ... (raw transcript is now online; cleaned-up version coming later!)
 * Additional Resources

Conference Call Details

 * Date: Thursday, 8-March-2012
 * Start Time: 9:30am PST / 12:30pm EST / 6:30pm CET / 17:30 UTC
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 * Expected Call Duration: ~2.0 hours


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Attendees

 * Attendees (incl. registered attendees):
 * SteveRay (co-chair)
 * TrishWhetzel (co-chair, in absentia)
 * MikeKellen
 * DamianGessler
 * BlazejBulka
 * IlyaZaslavsky
 * LinePouchard
 * DavidPrice
 * NancyWiegand
 * PeterYim
 * LeoObrst
 * DimitrisKotzinos
 * DavidFlater
 * JohnBilmanis
 * JoelBender
 * HaroldBoley
 * LarryLefkowitz
 * ScottHills
 * AnatolyLevenchuk
 * AmandaVizedom
 * DennisWisnosky
 * MatthewWest
 * JeffreyWallk
 * FrankOlken
 * ChristopherSpottiswoode
 * GaryBergCross (Gary Berg-Cross)
 * KatherineGoodier
 * PavithraKenjige
 * MichaelGruninger
 * JimSchoening
 * JimRhyne
 * BobSchloss
 * ElisaKendall
 * AliHashemi
 * BobbinTeegarden
 * BruceBauman
 * ByronDavies
 * DougFoxvog
 * EricChan
 * ErnaniSantos
 * GiulianoLancioni
 * HensonGraves
 * JamesOdell
 * KathyEllis
 * MikeBennett
 * RamSriram
 * SimonSpero
 * TerryLongstreth
 * ToddSchneider
 * ThomasGetgood
 * TomTinsley
 * CarlosRueda
 * RaviSharma
 * NikolayBorgest
 * (please add yourself to the list if you are a member of the Ontolog or OntologySummit community, or, rsvp to )
 * (please add yourself to the list if you are a member of the Ontolog or OntologySummit community, or, rsvp to )


 * Regrets:
 * NicolaGuarino
 * TrishWhetzel

Abstract
Large-Scale Domain Applications - II : Biomedical, earth & environmental science & engineering

This is our 9th Ontology Summit, a joint initiative by NIST, Ontolog, NCOR, NCBO, IAOA & NCO_NITRD with the support of our co-sponsors. The theme adopted for this Ontology Summit is: "Ontology for Big Systems." The event today is our 9th virtual session.

The principal goal of the summit is to bring together and foster collaboration between the ontology community, systems community, and stakeholders of some of "big systems." Together, the summit participants will exchange ideas on how ontological analysis and ontology engineering might make a difference, when applied in these "big systems." We will aim towards producing a series of recommendations describing how ontologies can create an impact; as well as providing illustrations where these techniques have been, or could be, applied in domains such as bioinformatics, electronic health records, intelligence, the smart electrical grid, manufacturing and supply chains, earth and environmental, e-science, cyberphysical systems and e-government. As is traditional with the Ontology Summit series, the results will be captured in the form of a communiqué, with expanded supporting material provided on the web.

The large-scale domain applications track will help to ground the discussions in the other tracks and bring key challenges to light by describing current large-scale systems and systems of systems that either use, or could use, ontologies in their deployment. "Large-scale" can mean either very large data sets, very complex data sets, federated systems, highly distributed systems, or real-time, continuous data systems. Examples of large data sets might include scientific observations and studies; complex data sets could be technical data packages for manufactured products, or electronic health records; federated systems could include information sharing to combat terrorism, highly distributed systems includes items such as the smart electrical grid (aka Smart Grid), and real-time systems include network management systems. Of course, some big systems might include all five aspects.

Todays speakers will describe experiences in adapting ontology technology for biomedical applications, biological plant studies, earth science, a hydrology system, and the oil and gas industry. As with the prior session in this track, each presentation will try to highlight what systems engineering or operational functions were impacted by the use of ontology, and how. These examples have been chosen to help ground the discussions in the other summit tracks of where ontology could or should be used.

More details about this Summit at: OntologySummit2012 (home page for the summit)

Agenda
Ontology Summit 2012 - Panel Session-09


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


 * 1. Opening - co-chairs [5 min.] ... [ slides ]
 * 2. Panel briefings - [12 min. each]
 * DavidPrice
 * MikeKellen
 * Abstract: The past two decades have seen an exponential growth in the technical ability to generate genetic and biomolecular data fueled by advances in measurement technologies. However, with a few exceptions, these data have failed to improve prevention or treatment of common human disease.  A fundamental reason for this discrepancy between data generation and clinical improvement is the immature development of analytical techniques to meaningfully interpret these new data types.  As with any new field, analytical methodologies need to be iteratively developed and refined. The difficulty of accessing, understanding, and reusing data, analysis methods, or models of disease across multiple labs with complimentary fields of expertise is a major barrier to the effective interpretation of genomic data today.  Additionally, much of the relevant data to answer a particular research question is spread among multiple public and private repositories.  Sage Bionetworks' mission is to catalyze a cultural transition from the traditional single lab, single-company, and single-therapy research paradigm to a model founded on broad precompetitive collaboration on analysis of large-scale biological data.  In this talk we will focus on the technology component of Sage Bionetworks solution strategy, Synapse, an informatics platform for open data-driven collaborative research.  Synapse provides programmatic access to a variety of clinical and genomic data sets, tracking of analysis workflows, and integration with common analysis tools like R/Bioconductor.
 * DamianGessler & BlazejBulka
 * IlyaZaslavsky
 * LinePouchard
 * 3. Q & A and open discussion [All: ~30 min.] -- please refer to process above
 * 4. Wrap-up / Announcements - (co-chairs)

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 --

PeterYim: Welcome to the

= OntologySummit2012: Session-09, Thursday 2012-03-08 =

Summit Theme: OntologySummit2012: "Ontology for Big Systems"

Track (4) Title: Large-Scale Domain Applications

Session Topic: Large-scale domain applications  Biomedical, earth & environmental science & engineering

Session Chairs: Dr. TrishWhetzel (NCBO; Stanford) and Dr. SteveRay (CMU)

Panelists:

- "Experiences from a Large Scale Ontology-Based Application Development for Oil Platforms"
 * Mr. DavidPrice (TopQuadrant)

- "Collaborative Clinical Genomics Data Analysis with Sage Bionetworks Synapse"
 * Dr. MichaelKellen (Sage Bionetworks)

- "The iPlant Collaborative Semantic Web Platform: Using OWL and SSWAP (Simple Semantic Web Architecture and Protocol) for On-Demand Semantic Pipelines"
 * Dr. DamianGessler (iPlant Collaborative) & Dr. BlazejBulka (Clark & Parsia)

- "Managing observation semantics in CUAHSI Hydrologic Information System"
 * Dr. IlyaZaslavsky (San Diego Supercomputing Center)

- "Linked Science as a producer and consumer of big data in the Earth Sciences"
 * Dr. LinePouchard (Oak Ridge National Laboratory)

Session page: http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2012_03_08

Mute control: *7 to un-mute ... *6 to mute (please make sure your own phone is not muted as well)

Can't find Skype Dial pad? ... it's under the "Call" dropdown menu as "Show Dial pad"

Proceedings:
anonymous morphed into DamianGessler

anonymous morphed into ChristopherSpottiswoode

anonymous1 morphed into DavidFlater

anonymous morphed into JimSchoening

anonymous morphed into DavidPrice

anonymous morphed into MichaelKellen

anonymous morphed into JimRhyne

anonymous morphed into ScottHills

anonymous morphed into ByronDavies

anonymous morphed into PavithraKenjige

LinePouchard: testing

PeterYim: == DavidPrice presenting ...

anonymous morphed into ElisaKendall

MikeBennett: Does the reported data include SCADA data from on-platform systems such as Fire and Gas, ESD and so on? Just curious.

DavidPrice: The date is about Drilling and Production. Some of it is measurement, but not really SCADA.

MikeBennett: @David thanks. Just seeing an opportunity there.

Ernani Santos morphed into ErnaniSantos

anonymous morphed into ThomasGetgood

DougFoxvog: What is "warm fallover"?

HaroldBoley: Re Slide 10: Would the 300 million triples be structured/modularized in some way, e.g. as named graphs?

DavidPrice: The triples are managed in graphs based on Licenses for Fields in the sea. This allows us to control the set of data over which aggregations and queries are allowed and also allows us to use these graphs as the basis for access control and security.

MichaelGruninger: @David -- you say that it is hard to test an ontology. Can you share any of your ontologies which we can test?

anonymous morphed into DWiz

AmandaVizedom: @David - to what extend do you think the "vague/ambiguous" character of the ontologies or their documentation (your slide 17) is a result of the application type being comparatively shallow (that is, not too much axiomatization or reasoning)?

DavidPrice: I attribute vague-ness entirely to projects running out of money - in fact I have heard that from the people who created some of the background ontologies/reference data we are re-using.

DavidPrice: I cannot yet share the ontologies, but they will be made public eventually ... probably 3Q2012. The project is not yet complete, the Drilling stuff is going into production use this month. The Production use will follow between now and June/July.

DWiz: David: Do you have a mandatory XDS? Otherwise, how to you generate a true ontology from XML?

DavidPrice: Our 'XSD Proxy Ontology' capability does not try to create a 'true ontology' - as the name suggests it's a proxy for the XSD that allow us to import an XML data file into the workspace and do SPARQL over it directly through the proxy ontology-based triples.

AmandaVizedom: @David - Have you tried developing test beds and test apps with which to evaluate the ontologies? Given the well-developed application context, this seems like an approach you could use to ontology testing & proofing.

DavidPrice: We are just now getting into the detailed use of proper software testing tools to try to do a better job wrt testing our ontology. We are working on large, complete test cases, test scenarios, automated tests using REST-like services, etc. to make testing the ontology fit into the more traditional testing apparatus used by our software team.

AmandaVizedom: @David - Ah, yes, I see what you mean. Not unlike undocumented code from abandoned software projects, then.

DavidPrice: FWIW we use Github for the source code/ontology management and SpiraTest for the testing tool.

DavidPrice: TopBraid Composer is an eclipse-based tool and that's what we use to develop ontology and SPIN/SPARQL/SWP.

DavidPrice: I have to leave for a while but will respond to any other questions in 30 mins or so. Thanks!

SteveRay: Thanks David. Fascinating talk.

AmandaVizedom: @David - I can't remember who it was, now, but one presenter earlier in the summit discussed an approach in which they used "real" (sound, computational) ontologies but also intermediate artifacts that are ontological in format (OWL) but are not used (or usable) as ontologies; rather, they are fairly direct models of the data source's data model. This is similar to what you describe, yes?

DavidPrice: @Amanda For ontologies of a domain, we usually follow Leo Orbst use of the term 'Strong ontologies' meaning they are about the domain of interest.

DavidPrice: @Amanda - wrt direct models of the data source ... yes, we call that a proxy ontology.

AmandaVizedom: @David - Thanks. I think a similar approach is used for the DoD EIW. Independently, we discussed using something like "proxy ontologies" on the USAF project. Though non-technical factors/authorities mooted that discussion, I thought (think) that it was promising. I sense a pattern.

DavidPrice: @Amanda For us the main thing is to use a semantic language like SPARQL to define the transforms between data sources and targets and so everything must be presented as at least RDF, and preferably as an OWL ontology.

DavidPrice: We also have ontologies of SPARQL, etc. which we often call 'system ontologies' as in software system ... just to confuse things even more

AmandaVizedom: @David - though I did and do think there needs to be some explicit (meta)data on/in the proxy ontology to make clear that it is not a full ontology - that is, under the formal semantics of the language used, it would not likely be computationally sound.

MikeBennett: @Amanda et al - we need a metaontology. Or at least an ISO 1087 compliant terminology and vocabulary setting out rather less messy uses of words like "Ontology" - people think they are listening about the same thing when someone is talking about a different thing - dog food much?

DavidPrice: We have a taxonomy of ontology-related artifacts we use (and modify as required in various projects). It can be used as metadata but we also use it in the base of the URIs for things and even in the name of graphs so it's visible to the ontologies/software developer.

DavidPrice: We actually often use the phrase 'schema' when we mean the 'ontology' in many projects because customers are more familiar with that terminology. We then have graphs that are transforms', that are 'swp', that are 'spin', that are 'testcase', etc. as you would in a typical software development team.

AmandaVizedom: @Mike - Yup. And we've probably gotten far enough along since we started saying that that we could actually build one, identifying main types of artifact. We would then run into the problem of every domain, in that we would disagree over what to call the various types. Were we then to get over the names problem (via multiple, contextual labels and/or other techniques), we'd then have a very useful product *and* a useful methodological example!

DavidPrice: @Amanda We have published some work on a metadata for ontology at http://linkedmodel.org/doc/vaem/1.2/ Vocabulary for Essential Metadata ... Ralph Hodgson has pushed that effort.

PeterYim: == MikeKellen presenting ...

anonymous morphed into GiulianoLancioni

SimonSpero: @MichaelKellen: SKOS is for controlled vocabularies; SKOS concepts are "Subjects", not the things that subjects are about"

SimonSpero: @Michael: is that the intended semantics

MichaelKellen: Yes, we aren't trying to create a model of the relationships among domain objects that we can reason about

MichaelKellen: We are simply trying to consistently structure information to help scientists pull together appropriate data so that they can reason about it

SimonSpero: @Michael: as long as it's just for guiding people to data sets, that's a safe use

MichaelKellen: There are other projects in life sciences trying to use the richer semantics to actually model the domain

MichaelKellen: The problem they hit is that there are so many unknowns in our domain that this is hard to do

SimonSpero: @Michael: right - it's just important to keep the distinctions clear so that a KOS isn't used directly an ontology

MikeBennett: @Simon @Michael we have a labeling problem: if we get into the habit of referring to everything that is in triple-store formats as "An ontology" then we need a new word for ontologies. Syntax is not semantics...

PeterYim: == DamianGessler presenting ...

BobbinTeegarden: @Damian where is are the transformation decisions made between services in the pipeline?

DamianGessler: @BobbinTeegarden third-parties hosting SSWAP semantic web services run a servlet that we provide from our Software Development Kit. This servlet handles the semantics and ensures that both input and output follow the protocol. So at the pipeline end, we can look at the outputs and required inputs, and orchestrate the interaction. Third-party data need not pass through us: it goes directly from the upstream service to the downstream service.

BobbinTeegarden: @Damian Thank you, grand.

DougFoxvog: How do you deal when a large number of possible services are available at one point? E.g., there may be hundreds of services available for converting images from Format A to Format B.

DamianGessler: @DougFoxvog The key is in service choice prioritization--just like Google prioritizes web pages on its search results page. But here, we are not nearly as sophisticated as Google and currently use a very simple algorithm. We'll put focus here down the road a little.

AmandaVizedom: @Damian - There are many similarities between the iPlant approach you describe and the Semantic SOA - service discovery approach being developed by USAF. I think that the approach used in the DoD EIW is also strongly similar (perhaps DWiz - DennisWisnosky - will comment). In each case, ontologies are primarily being used to provide semantic description, model, or wrapper for (mostly natively non-semantic) data services, and ontological reasoning and search technologies are used to enable service discovery given user needs. Your statement about ontology alignment, however, stands out. I understand service matching operationally and ephemerally based on reasoning over lightly-aligned ontologies. But you seem to be saying something else, that the alignment of the locally-developed ontologies in which the services are described is not manual, not static, and not axiomatic. Can you say something more about how you align, or connect, or reason across such ontologies without any prior / stable alignment points?

DamianGessler: @AmandaVizedom The key is that we are not aligning ontologies on *data* per se; we let services make the mapping statements (e.g., the (possibly complex) data they take in and the (possibly complex) data they give back. So we "simply" need to determine and operate on subsumption questions: can this service operate on my data and return what I want? This is essentially a dynamic, operational alignment question.

PeterYim: == IlyaZaslavsky presenting ...

anonymous morphed into CarlosRueda

SimonSpero: @Ilya: if the hierarchies are genuine hierarchies - that is, subordinate terms always entail the superordinate term, then you have traditional Knowledge Organization System semantics

ElisaKendall: @Ilya, have you used any vocabulary such as ISO 1087 to define relationships such as synonomy, polysemy, etc.? Just wondering ...

MatthewWest: Sorry I have to go.

BobbinTeegarden: @Ilya what did you use for the visualizations, and how well received were they?

IlyaZaslavsky: @BobbinTeegarden: Inxight startree, semantic wiki, also recently Silverlight. Hydrologists were comfortable using Inxight startree in the tagging application

IlyaZaslavsky: @ElisaKendall: no, we haven't. This sounds interesting. The current plan is to use SKOS

IlyaZaslavsky: @SimonSpero. No, in many cases these are not trees. We try to present them as trees where possible

HaroldBoley: @Elisa, do you use SBVR rules for mapping?

ElisaKendall: @Ilya: I have a draft ontology for ISO 1087 that we're planning to standardize at OMG, together with ISO TC 37. I'm guessing that we will be publishing a draft sometime this spring/summer, with one of the goals being to use it to assist in mapping SBVR vocabularies to ODM/OWL. If you'd like to chat more about this offline, please feel free to contact me directly, at ekendall at thematix.com.

IlyaZaslavsky: @ElisaKendall, thanks Elisa, I'd be interested

ElisaKendall: @Harold, not so far, but Mark Linehan (IBM) has been doing some work in this area for a Date Time vocabulary we're creating at OMG. The current alpha (or maybe beta) spec is available at http://www.omg.org/spec/DTV/1.0/Beta1/, but doesn't include much of the OWL work we've been doing more recently in finalization.

ElisaKendall: @Harold, you might take a look even at the Beta spec for the Date Time effort, as it does include some OCL and CLIF statements for the SBVR definitions, which we're still refining, but could give you a better sense of what the SBVR actually is intended to say.

HaroldBoley: @Elisa, thanks, I just opened the huge http://www.omg.org/spec/DTV/1.0/Beta1/ PDF.

FrankOlken: @ElisaKendall The URL you posted for DTV yields a 404 (page missing) error ...

ElisaKendall: @Frank, hmmm... for me it downloads, so I'm glad you were able to get to it.

ElisaKendall: @Harold, Sorry, but hopefully you'll find it useful. When we've added the OWL it will only get bigger ... as you might imagine, but I think the result could provide a next generation OWL Time ontology, and includes a number of business oriented definitions.

MikeBennett: Is it the mental model of hydraulogists that doesn't map to Protege, or that fact that to use Protege you first need a mental model of ontology, since Protege in no way presents a visual or other model of ontology to the person looking at it.

FrankOlken: @ElisaKendall The DTV link that HaroldBoley posed seems to work.

HaroldBoley: @Frank, my quote of the URL omitted the comma, wrongly assumed to be part of the URL by the chat software.

MikeBennett: @Frank et al - there is a rogue comma in the original URL.

HaroldBoley: @Elisa, yes it looks very exhaustive. Can I mentioned it in the OASIS TC on LegalRuleML?

ElisaKendall: @Harold - Yes, of course, and please give people the link to the specification. Our next iteration will have more OWL, and ultimately we will have a set of OWL ontologies corresponding to the SBVR

PeterYim: == LinePouchard presenting ...

LinePouchard: @Peter: I sent you a new set of slides that contain page numbers. Would you have time to upload them?

PeterYim: @Line - ack .... will try now

MichaelGruninger: my copy has page numbers

GiulianoLancioni: mine too

JimRhyne: So does mine.

AmandaVizedom: Copy just downloaded from refreshed call page does have the page numbers.

DougFoxvog: The link to the slides is the same. Re-download & you'll get the page numbers

SteveRay: Strange, I just did this and do not get slide numbers...

anonymous morphed into NancyWiegand

DougFoxvog: @Line: attaching multiple textual terms to individual ontology terms would assist in search, not relying on searching only on the ontology term's name.

PeterYim: == SteveRay moderating the open discussion ...

SimonSpero: [ref. MichaelGruninger's verbal comment] Testing; Competency or performance?

LinePouchard: DataONE is offering an Internship program for Summer 2012 at http://www.dataone.org/internships. I am co-mentoring for Project #7 to continue the work described today. In particular, this work needs to extend parts of the SWEET ontologies w.r.t soil science, and a candidate with domain knowledge would be ideal. The intern works remotely from their own institution for ten weeks. The deadline is March 12. Please share with your students.

PeterYim: @ALL - the memory and the work of Dr. Robert Raskin (http://ontolog.cim3.net/cgi-bin/wiki.pl?RobRaskin ) who passed away last Friday, will be with us. Rob was the PI of the SWEET Ontology (Semantic Web for Earth and Environmental Terminology) project, and an active contributor to this community

MikeBennett: [ref. IlyaZaslavsky's comment about domain experts having problems with Protege, and PeterYim's comment about limitations imposed by the expressivity of the tools or the language being used] Expressivity versus what is expressed - these are two distinct matters.

LarryLefkowitz: And formalism vs content is another distinction. Having a great grammar but a small vocabulary is certainly going to limit expressivity. Yes, in theory you can create new vocabulary on the fly, but that could easily overtake the initial modeling task.

MikeBennett: Exactly. you can have a very expressive model of data, but it's still a model of data. Or you can have a more or less expresive model of real things in the problem domain, and it's an ontology.

ElisaKendall: @Frank, the units/dimensions part of the model is limited, fyi, but the SysML effort for quantities and units and this units model are in the process of being aligned now at OMG, with the SysML version being more comprehensive, as you might imagine/hope.

DavidFlater: @Steve What happened with OASIS Quantities & Units of Measure Ontology?

DavidPrice: There is also the QUDT ontology from NASA Ames that was input to the OASIS QUOMOS activity ... http://qudt.org/

ElisaKendall: @David, Folks from OMG who are working on the SysML QUDV effort are looking at alignment with that as well, fyi, but I don't know much about the differences. I have heard there are some, which they are working through, and that JPL is involved along with ESA.

IlyaZaslavsky: @LinePouchard: do you know if there are already soil vocabularies available in some form? Is there any relationship with SoilML? CZO project would be interested in this.

LinePouchard: @Ilya: yes, I had talked to Nancy W. about this, and last Fall, SoilML was not released yes.

DamianGessler: Thank you

GaryBergCross: bye all

PeterYim: great session!

SteveRay: Thanks everybody for making the session stimulating.

PeterYim: -- session ended: 11:26am PST --

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


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Audio Recording of this Session

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 * the playback of the audio files require the proper setup, and an MP3 compatible player on your computer.
 * Conference Date and Time:	8-Mar-2012 9:36am~11:26am PST
 * Duration of Recording:	1 Hour 45.4 Minutes
 * Recording File Size:	       12.1 MB (in mp3 format)
 * suggestions:
 * its best that you listen to the session while having the respective presentations opened in front of you. You'll be prompted to advance slides by the speaker.
 * Take a look, also, at the rich body of knowledge that this community has built together, over the years, by going through the archives of noteworthy past Ontolog events. (References on how to subscribe to our podcast can also be found there.)

Additional Resources:

 * Homepage of OntologySummit2012
 * OntologySummit2012 Launch Event - ConferenceCall_2012_01_12
 * OntologySummit2012 session-02 "Ontology for Big Systems: What's In Scope" - ConferenceCall_2012_01_19
 * OntologySummit2012 session-03 "Ontology for Big Systems & Systems Engineering - I : The Systems and Systems Engineering Problem Space" - ConferenceCall_2012_01_26
 * OntologySummit2012 session-04 - "Ontology for Big Systems & Systems Engineering - II : a response to the problem space and setting out the working program for this Summit Track" - ConferenceCall_2012_02_02
 * OntologySummit2012 session-05 - "Meeting Big Data Challenges through Ontology - I" - ConferenceCall_2012_02_09
 * OntologySummit2012 session-06 - "Large-Scale Domain Applications  I" - ConferenceCall_2012_02_16
 * OntologySummit2012 session-07 - "Implementing Ontology Quality Measures in Big Systems Engineering" - ConferenceCall_2012_02_23
 * OntologySummit2012 session-08 - "Ontology for Federation and Integration of Systems" - ConferenceCall_2012_03_01
 * Wiki pages devoted to Track-4: Large-scale Domain Applications
 * OntologySummit2012_Applications_CommunityInput (open)
 * OntologySummit2012_Applications_Synthesis (maintained by SteveRay, TrishWhetzel)
 * [ontology-summit] mailing list archives - http://ontolog.cim3.net/forum/ontology-summit/
 * to subscribe to this discussion list: send a blank message from your subscribing email address to  or visit http://ontolog.cim3.net/mailman/listinfo/ontology-summit/ and subscribe yourself there
 * Homepage of the Summit series - see: OntologySummit

For the record ...

How To Join (while the session is in progress)

 * 1. Call in from a phone or from skype: http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2012_03_08#nid366I
 * 2. Open chat in a new browser window: http://webconf.soaphub.org/conf/room/summit_20120308
 * 3. Download presentations for each speaker here: http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2012_03_08#nid3669
 * or, 3.1 (access our shared-screen vnc server, if you are not behind a corporate firewall)