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Re: [dxwg] Clarify definition of dct:accrualPeriodicity in the context of DCAT (#728)

From: Simon Cox via GitHub <sysbot+gh@w3.org>
Date: Sat, 16 Feb 2019 02:25:51 +0000
To: public-dxwg-wg@w3.org
Message-ID: <issue_comment.created-464275061-1550283950-sysbot+gh@w3.org>
Thanks @kcoyle - I thought my concern came down to thinking about whether the 'collection' under consideration is 
(a) the Catalog, or 
(b) the Dataset
But maybe that's not so clear cut. 

And even "at what frequency a dataset is updated by its owner" still does not nail down "at what frequency items (values) are added to (spaced in) a time-series" since a daily dataset update might still include hourly data. 

From a user's perspective, these differences really matter: The dataset-update rate is about currency, while the data-rate will probably determine whether the data is fit for purpose. 

This is not an esoteric concern. It was prompted by an investigation in a recent metadata workshop, where we were trying to find datasets about related phenomena to do some modeling and analysis. Time-series with daily, seasonal and annual spacing can't be used together for most tasks, but that information is mostly only available by reading the abstract, or inspecting the downloaded data. If it was an explicit dataset statistic then a query could be constructed. That's why I referred over to #84 . 

But I do think there is some clarification required for `dcat:accrualPeriodicity`. 

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Received on Saturday, 16 February 2019 02:25:53 UTC

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