[MEI-L] Different <expansion> versions within <choice>?

David Lewis D.Lewis at gold.ac.uk
Mon Aug 26 15:50:31 CEST 2019

Just to note (in support of this proposal) that the TEI use of expan and ex is pretty close to this, including expan as a child of choice. 

My vote would be to use @type initially as discussed until the categories settle well enough to be considered as a special new attribute with a fully-controlled vocabulary.


> On 20 Aug 2019, at 09:29, Werner Goebl <goebl at mdw.ac.at> wrote:
> I agree with Craig that the expansions (full repetitions, minimal repetitions) should be coded as such in MEI. There should be another type: "typical" repetitions that reflect omitted repetitions at a da-capo Minuet (A A B B C C D D A B).
> These three expansion types are not really editorial readings (as suggested by Axel) and they are not really choices either. expansion at type seems to be reasonable for this, but apparently using this attribute for that purpose has some contra arguments.
> Best,
> Werner
> On 19.08.19 18:24, Craig Sapp wrote:
>> One thought about the expansion list, such as:
>> <choice>
>>          <expansion xml:id="expansion-full" plist="#A #A1 #A #A2 #B #B1
>>                #B #B2 #C #C1 #C #C2 #A #A2 #B #B2">
>>          <expansion xml:id="expansion-minimal" plist="#A #A2 #B #B2 #C #A #A2
>>                #B #B2">
>>          <expansion xml:id="expansion-arrau1956" plist="#A #A1 #A #A2 #B
>>                #B2 #C #C2 #A #A1 #A #A2 #B">
>> </choice>
>> It would be useful to have a standardized method of identifying what you are IDing as "expansion-full" and "expansion-minimal".  In other words, the performance sequence when taking repeats as instructed in the score and not taking repeats.  Special labeling of these two expansion cases would be useful for analytic purposes such as determining the duration of Beethoven sonatas when taking written repeats or with no repeats.  And these special cases should not be encoded only in the structure of the expansion IDs.  That is the main purpose of the expansion at type in the Humdrum conversions, where the default expansion indicates the performance sequence taking repeats as written, and "norep" is the minimal performance sequence (with "norep" meaning "no repeats").  The norep expansion is particularly useful for doing computational analysis of the score, since the repeated material is usually not needed.
>> -=+Craig
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