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Re: concept illustrations for the data journalism example

From: martin <martin@ics.forth.gr>
Date: Thu, 12 May 2011 19:42:34 +0300
Message-ID: <4DCC0DFA.2080503@ics.forth.gr>
To: public-prov-wg@w3.org
We have provenance applications of data capturing and scientific observation
in medicine, archaeology and even some in satellite data, and a major application
in empirical and synthetic creation of 3D Models by various methods.

I regard it as important to include and differentiate sufficiently the event of
capturing digital data via devices in a physical environment.

Whereas in Digital-to-Digital processing the environment and place of the event
plays a neglectable role, the scientific or even forensic interpretation of measured
data critically depends on environmental factors, and of analogue characteristics of
involved devices. We may even regard the individual history of calibration or
degradation of an individual device as relevant.

It is not the challenge to register in the provenance data
all those factors explicitly per event, but to provide a few core data that can lead the interested
user to find such details in other sources. For instance, a date-time, place (geo-reference) and/or
the observed object (patient!) may already be sufficient, depending on the case.
This would provide the interested scientist with enough clues to find more data about the conditions at
that place and time from other sources.

Another distinct feature of measurement or digitization events ("acquisition")is that they are
by nature terminal in the provenance chain: They are the unique transition from the real to
the digital, and all derivatives should include reference to this ultimate source and
their circumstances. For instance, an image of Obama typically stays an image of Obama
independently from the number of processing steps. So, the reference to the object captured
in the initial event is a vital parameter for the whole chain to follow. Querying an
provenance chain should ultimately stop at the acquisition event or the
invention of data, which may be due to an artistic process, a scientific simulation process
or a technical planning process. Therefore reasoning on "terminal" events differs from
that about general processing events.

To make things as simple as possible, I propose to include the simple taking of a news photo
in the journalism example. This is simple, but includes all necessary features to discuss
the core concept.

It needs not be as weird as : http://www.cidoc-crm.org/crm_core/core_examples/hoagland.htm
or http://www.cidoc-crm.org/crm_core/core_examples/henrichsen.htm.....

Best,

Martin

-- 

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Received on Thursday, 12 May 2011 16:43:05 GMT

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