[pd-discuss] Flowchart based Public Domain calculator API call

Wed Mar 3 10:42:35 UTC 2010

Hi all,

I've cleaned the code for the flowchart/xml based Public Domain Calculator Substantially (I removed all Graphical User Interface code as that is now in a higher state of development over at EuropeanaLabs' SVN (/contrib/kennisland/)

As said before I have made 4 calculators available (no, uk, nl, and generic european(ge) ) so these can be filled in as ISO jurisdiction codes. 

The calculator does not calculate by date but by year so it cuts the date format (now in yyyymmdd) at yyyy

I've extended the API call by putting a JSON work object in an array so we can make a call of a set of works instead of one at a time.
it will output an array with results in the same order as it got them.

I've updated the code and put it all on sourceforge (svn co https://pdc-kl.svn.sourceforge.net/svnroot/pdc-kl pdc-kl)

Things we need to do before we could use these on datasets:
- integration with public domain works
- identifying not 100% scenarios and putting them in the xml
- putting it on a server which can handle the load of larger sets.
- develop flowcharts for all jurisdictions ;)

best,

Maarten Zeinstra

Kennisland | Knowledgeland 
T: +31.20.575.6720 | E: mz at kl.nl
www.kennisland.nl | www.knowledgeland.org

On Feb 13, 2010, at 24:10 , Rufus Pollock wrote:

> Wow Maarten, great work! Comments inline below.
> 
> On 11 February 2010 08:53, Maarten Zeinstra <mz at kl.nl> wrote:
>> HI all,
>> I am happy to announce that a preliminary version of the flowchart based
>> automatic public domain calculator can be tested (a bit) on
>> test.kl.nl/API/?json=
> 
> Great stuff. I've now deployed the results of our coding efforts in
> Luxembourg onto publicdomainworks.net:
> 
> <http://www.publicdomainworks.net/api/>
> 
> As yet I haven't connected this into our actual calculators [1] but
> that is next on the agenda.
> 
> [1]:<http://knowledgeforge.net/pdw/hg/file/tip/pdw/pd/>
> 
> [...]
> 
>> This will be communicated using json, a json structure would look like:
> 
> [...] - I've snipped the json because it was rendering poorly in my
> email client (all flattened) but this is really nice. Would you be
> able to update the wiki page documenting/speccing the API with this
> info?
> 
> I also think one thing that would be really nice (but it obviously
> requires a backing db such as PD works) is for the API to be able to
> do a bit of work such as determining author death date just from
> author name (i.e. for the API to match an author name against a
> relevant author object). My guess is that most human users of a
> calculators won't always know all relevant information.
> 
>> Which will perform the calculation. Now it will state 'Uncertain, lacking
>> information' this is because is now standardly based on Generic European
>> flowcharts and hits a wall at the "Is at least one of the authors of the
>> jurisdiction"
> 
> This might be where the uncertainty field comes in. It would be nice
> to give an approximate answer in cases where you have 95% of the
> relevant info (and the author jurisdiction item is very minor ...)
> 
>> The programming is now in a test phase but I could really use some help
>> transforming flowcharts into XML structures
>> If anyone wants to help this cause please contact me! :)
> 
> I'm happy to help though you know my preference for code over XML ;)
> 
> Regards,
> 
> Rufus

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