dct:accrualPeriodicity: swapped domain & range

[VladimirAlexiev]

Seems to me the domain and range of this property are swapped:

dct:accrualPeriodicity
    rdfs:domain dct:Frequency ;
    rdfs:range dataid:Dataset .

Also, in the examples you use http://purl.org/linked-data/sdmx/2009/code#freq-W meaning Weekly.
In http://vocab.getty.edu/doc/#Descriptive_Properties I've used:

• voag:frequencyOfChange and dct:accrualPeriodicity. frequencyOfChange is more accurate for our purpose: accrualPeriodicity means how often issues are added to a journal or papers are added to an archive; while frequencyOfChange means how often a dataset is refreshed
• value voag:BiWeekly because that's how often Getty updates. VOAG provides more periodicity values than SDMX.

BTW in http://vocab.getty.edu/doc/#Descriptive_Information I do a "mash up" of several descriptive ontologies, not unlike DataID. I did this in Mar 2014. I like your well-defined approach to such "mash up" better, and have recorded a future Getty task to use DataID. But perhaps you can borrow some ideas from my "mash up"...

[chile12]

removed all redefinitions* (placed there by protégé i presume)