- tdwg-tag - lists.tdwg.org

Re: [tdwg-tag] time and space namespaces in Darwin Core
by Bryan 25 Aug '10

25 Aug '10

There is a Droid AP called GPS status the reports dop dilution of precision. I have not looked into how that relates to meters. sent from my Droid On Aug 25, 2010 7:28 PM, "Peter DeVries" <pete.devries(a)gmail.com> wrote: I looked through my iPhone programming book and the iPhone does output an accuracy measure that can be in meters. I don't now if all the applications expose this functionality but I did find one for iPhone / iPad that does. http://gps.motionx.com/iphone/overview/ <http://gps.motionx.com/iphone/overview/>- Pete On Tue, Aug 24, 2010 at 3:44 PM, John Wieczorek <tuco(a)berkeley.edu> wrote: > > Catching up on this... TaxonConcept Knowledge Base <http://www.taxonconcept.org/> / GeoSpecies Knowledge Base <http://lod.geospecies.org/> About the GeoSpecies Knowledge Base ------------------------------------------------------------

1 0

time and space namespaces in Darwin Core
by joel sachs 25 Aug '10

25 Aug '10

All, When representing observation records in RDF, there are advantages to using Dublin Core and Geo (http://www.w3.org/2003/01/geo/wgs84_pos#) namespaces where possible. For example, if we use DC:date, and geo:lat, geo:long, instead of DwC:eventDate, DwC:lat, and DwC:long, then Linked Data browsers can automatically map the records, plot them on a timeline, etc. My question is: What are the disadvantages to doing this? (For example, is this going to break someone's DwC validator?) Thanks - Joel.

4 8

Re: [tdwg-tag] time and space namespaces in Darwin Core
by John Wieczorek 24 Aug '10

24 Aug '10

The partially good news is that if enough information (dwc:geodeticDatum) is given in a Darwin Core-based record, geo:lat/lon can be determined from it. More disturbing to me is that anyone would think geo:lat/lon alone is sufficient for any application, as it carries no notion of uncertainty and therefore fitness for use. Add dwc:coordinateUncertaintyInMeters (or even dwc:coordinatePrecision if you must) to the mix and I would be much happier. On Sun, Aug 8, 2010 at 11:26 PM, <Garry.Jolley-Rogers(a)csiro.au> wrote: > Hi Jim, > Thanks. Had this aside to read in detail later. I think John is > right... As same value with different constraints mean different > interpretations are possible and seems to be the key thing. How are the > values to be interpreted. > > G > > -----Original Message----- > From: Jim Croft [mailto:jim.croft@gmail.com] > Sent: Monday, 9 August 2010 4:12 PM > To: Alexander, Paul (PI, Black Mountain); Harvey, Paul.W (PI, Black > Mountain); Jolley-Rogers, Garry (PI, Black Mountain); Cawsey, Margaret (CES, > Crace); Greg Whitbread > Cc: tuco(a)berkeley.edu > Subject: Fwd: [tdwg-tag] time and space namespaces in Darwin Core > > Did you catch this thread on tdwg-tag? It is an almost exact mirror > of the conversations we have be having in the taxon profile space, but > involving the specimen locational data. > > From John's comments it would appear he is not prepared to accept the > geo: and dwc: lat/long as 'exact match' because, although they are the > same values, they have different constraints (or more precisely one > one has a constraint and one doesn't). > > I wouldn't have picked it but this looks like a case for 'closematch'. > > jim > > > ---------- Forwarded message ---------- > From: John Wieczorek <tuco(a)berkeley.edu> > Date: Mon, Aug 9, 2010 at 3:56 AM > Subject: Re: [tdwg-tag] time and space namespaces in Darwin Core > To: joel sachs <jsachs(a)csee.umbc.edu> > Cc: tdwg-bioblitz(a)googlegroups.com, tdwg-tag(a)lists.tdwg.org > > > There is actually no equivalency between dwc:decimalLatitude and > geo:lat because geo:lat is specified to represent the latitude in the > WGS84 spatial reference system and dwc:decimalLatitude has no such > such restriction. > > On Fri, Aug 6, 2010 at 10:08 AM, joel sachs <jsachs(a)csee.umbc.edu> wrote: > > > > On Fri, 6 Aug 2010, Hilmar Lapp wrote: > > > > > Shouldn't the RDF for DwC link DwC:lat to geo:lat (using some subtype > > > or better yet equivalency relation)? And shouldn't hence Linked Data > > > browsers be able to use DwC:lat in the same way as geo:lat? > > > > > > > Yes. But no Linked Data browser I'm aware of applies > > owl:equivalentProperty assetions before rendering the data. (In fact, > most > > do no reasoning at all.) I agree that, whatever our default display, > > it should include the appropriate mapping statements, either via an > > rdfs:seeAlso or similar link, or directly in the document. > > > > > > Joel. > > > > > > > -hilmar > > > > > > On Aug 6, 2010, at 11:01 AM, joel sachs wrote: > > > > > >> All, > > >> > > >> When representing observation records in RDF, there are advantages > > >> to using Dublin Core and Geo (http://www.w3.org/2003/01/geo/ > > >> wgs84_pos#) > > >> namespaces where possible. For example, if we use DC:date, and > > >> geo:lat, geo:long, instead of DwC:eventDate, DwC:lat, and DwC:long, > > >> then Linked Data browsers can automatically map the records, plot > > >> them on a timeline, etc. > > >> > > >> My question is: What are the disadvantages to doing this? (For > > >> example, is this going to break someone's DwC validator?) > > >> > > >> Thanks - > > >> Joel. > > >> > > > > > > -- > > > =========================================================== > > > : Hilmar Lapp -:- Durham, NC -:- informatics.nescent.org : > > > =========================================================== > > > > > _________________ > Jim Croft ~ jim.croft(a)gmail.com ~ +61-2-62509499 ~ > http://www.google.com/profiles/jim.croft > 'A civilized society is one which tolerates eccentricity to the point > of doubtful sanity.' > - Robert Frost, poet (1874-1963) > > Please send URIs, not attachments: > http://www.gnu.org/philosophy/no-word-attachments.html >

5 11

Re: [tdwg-tag] time and space namespaces in Darwin Core
by Bryan 24 Aug '10

24 Aug '10

If there is likely to be multiple coordinate systems can we have a column that defaults to wgs84 but may be reset to other systems? Does someone have a table that could be given to data collectors for estimating uncertainty? The variables in this case are limited. sent from my Droid On Aug 12, 2010 2:04 AM, "Javier de la Torre" <jatorre(a)gmail.com> wrote: +1 for bioblitz. I will add that because Fusion tables use WGS84 for geometries it is important that we don't mix them. We will be relying on the spatial capabilities on fusion tables for data visualization. Javier www.vizzuality.com On 12/08/2010, at 03:52, joel sachs <jsachs(a)csee.umbc.edu> wrote: > On Mon, 9 Aug 2010, Javier de ...

2 1

Proposed Darwin Core term additions and changes: individualRemarks and establishmentMeans
by Steve Baskauf 11 Aug '10

11 Aug '10

In http://code.google.com/p/darwincore/issues/detail?id=70 I proposed addition of the class Individual to Darwin Core. In the discussion of that proposal, the question was raised as to which existing DwC terms should be a part of this class if it were added. After considerable thought and some work in developing RDF representations for Individuals, I believe that the term establishmentMeans should be a member of the proposed class. It has also become clear to me that if the class is introduced, there is a need for the term individualRemarks which would serve a parallel purpose to other xxRemarks terms in DwC. I have provided implementation examples in the recommendations, which can be found at http://code.google.com/p/darwincore/issues/detail?id=80 and http://code.google.com/p/darwincore/issues/detail?id=81 If you would like to discuss these proposals, please post on the tdwg-contents list or add comments to the Google Code wiki. I have cross-posted to the tdwg-tag list, but I think any discussion would be better held on the tdwg-content list, so please post there. Steve Baskauf -- Steven J. Baskauf, Ph.D., Senior Lecturer Vanderbilt University Dept. of Biological Sciences postal mail address: VU Station B 351634 Nashville, TN 37235-1634, U.S.A. delivery address: 2125 Stevenson Center 1161 21st Ave., S. Nashville, TN 37235 office: 2128 Stevenson Center phone: (615) 343-4582, fax: (615) 343-6707 http://bioimages.vanderbilt.edu

1 1

provenance chains and DwC:recordedBy
by joel sachs 06 Aug '10

06 Aug '10

All, In preparation for the tdwg bioblitz, I'd like to configure our Spotter tool (http://spire.umbc.edu/spotter) to compose DwC records. Currently, it uses an observation ontology that we whipped up a few years ago. (Here's an illustrative record - http://spire.umbc.edu/spotter/observation/data.php?record=1534) For the most part, the mapping is straightforward. However, I'm wondering about two terms: "hasObserver" and "hasReporter". We distinguished between these two terms to accommodate situations where a student makes an observation, but her teacher reports it. Similarly, in a bioblitz event, one model is that a survey team leader will fill out and submit a spreadsheet comprised of the observations made by members of the survey team. Both these terms seem to map to DwC:recordedBy. According to http://rs.tdwg.org/dwc/terms/#recordedBy, "The primary collector or observer, especially one who applies a personal identifier (recordNumber), should be listed first." So if we simply listed observer followed by reporter, we would comply with the spec. Of course, the ordering would be lost in typical rdf representations, since triples are considered unordered. And whether in rdf or in text, the distinction between observer and reporter would be pretty much lost. Since one of the goals of the bioblitz is figuring out good ways to use DwC in citizen science, I'm interested in opinions on whether we should preserve the observer/reporter distinction, and include these non-DwC terms in the bioblitz data profile. Many thanks - Joel.

4 5

TDWG presentation for biologists
by Lee Belbin 10 Jul '10

10 Jul '10

Hi Dave There are quite a few materials of an introductory nature at http://www.tdwg.org/about-tdwg/resources-for-outreach/. This includes brochures, PPT presentations (including Gail's), primers, posters that John mentioned, and some neat videos. Most if not all are non-technical. There is also a 'getting started' section of the web site at http://www.tdwg.org/getting-started/. Maybe it would be good BTW to add your presentation to these resource pages? Cheers Lee Lee Belbin Geospatial Team Leader Atlas of Living Australia

1 0

TDWG Presentation for biologists
by David Remsen (GBIF) 09 Jul '10

09 Jul '10

Hi, On short notice I have been invited to give a presentation on TDWG and the Sept. meeting to the monthly meeting of the Woods Hole Oceanographic Institution biology department on Monday morning. I have looked at the presentations on the TDWG outreach site but they seem a bit too technical for biologists. MIght anyone have any TDWG materials geared toward non-technical biologists? Best, David Remsen ---------------------------------------------------------------------------- David Remsen, Senior Programme Officer Electronic Catalog of Names of Known Organisms Global Biodiversity Information Facility Secretariat Universitetsparken 15, DK-2100 Copenhagen, Denmark Tel: +45-35321472 Fax: +45-35321480 Mobile +45 28751472 Skype: dremsen ----------------------------------------------------------------------------

2 1

WPS for Names
by Kevin Richards 09 Jul '10

09 Jul '10

I have been pondering taxon name matching type services lately... I wonder if the OGC WPS (Web Processing Service) would make a good platform for integrating the various name matching algorithms that are being worked on lately. I was imagining something like a web interface where you can go to and view a list of the available algorithms and select different algorithms in different orders to get the best set of match results your own list of name strings/data. If everyone set up their algorithms as a WPS then this interface would call each WPS in the appropriate order until then end of the configured workflow path. UI something like (in diagram): [cid:image002.png@01CB1DDB.86BDF370] Where the bottom part is configurable by the user. Each box being a representation of a WPS service for doing the match. Any thoughts? Perhaps something that could be discussed at TDWG? One issue would be how to define/specify the list of names to match against - then when you pass the processing of a match routine how would it access the names list to match?? Perhaps it could all be based on one server and people could submit algorithm/WPS services to it? Hmmmm, will keep dreaming ... Kevin ________________________________ Please consider the environment before printing this email Warning: This electronic message together with any attachments is confidential. If you receive it in error: (i) you must not read, use, disclose, copy or retain it; (ii) please contact the sender immediately by reply email and then delete the emails. The views expressed in this email may not be those of Landcare Research New Zealand Limited. http://www.landcareresearch.co.nz

6 8

FW: Blog on HTTP Link header and host-wide well-known URI-s, and Linked Data
by Kevin Richards 07 Jul '10

07 Jul '10

-----Original Message----- From: semantic-web-request(a)w3.org [mailto:semantic-web-request@w3.org] On Behalf Of Ivan Herman Sent: Wednesday, 7 July 2010 5:03 p.m. To: W3C Semantic Web IG; W3C LOD Mailing List Cc: Jonathan Rees Subject: FYI: Blog on HTTP Link header and host-wide well-known URI-s, and Linked Data This is just to draw attention on Jonathan Rees' blog on these subjects: http://www.w3.org/QA/2010/07/new_opportunities_for_linked_d.html Ivan (the go-between:-) ---- Ivan Herman, W3C Semantic Web Activity Lead Home: http://www.w3.org/People/Ivan/ mobile: +31-641044153 PGP Key: http://www.ivan-herman.net/pgpkey.html FOAF: http://www.ivan-herman.net/foaf.rdf Please consider the environment before printing this email Warning: This electronic message together with any attachments is confidential. If you receive it in error: (i) you must not read, use, disclose, copy or retain it; (ii) please contact the sender immediately by reply email and then delete the emails. The views expressed in this email may not be those of Landcare Research New Zealand Limited. http://www.landcareresearch.co.nz

1 0