Abstract :
In this article recording evidence for data values in addition
to the values themselves in bibliographic records
and descriptive metadata is proposed, with the aim of
improving the expressiveness and reliability of those
records and metadata. Recorded evidence indicates why
and how data values are recorded for elements. Recording
the history of changes in data values is also proposed,
with the aim of reinforcing recorded evidence.
First, evidence that can be recorded is categorized into
classes: identifiers of rules or tasks, action descriptions
of them, and input and output data of them. Dates of
recording values and evidence are an additional class.
Then, the relative usefulness of evidence classes and
also levels (i.e., the record, data element, or data value
level) to which an individual evidence class is applied, is
examined. Second, examples that can be viewed as
recorded evidence in existing bibliographic records and
current cataloging rules are shown. Third, some examples
of bibliographic records and descriptive metadata
with notes of evidence are demonstrated. Fourth, ways
of using recorded evidence are addressed
