[Babase] clarification of default ranking

Susan Alberts alberts at duke.edu
Fri Apr 11 14:35:37 EDT 2008


On Apr 10, 2008, at 11:54 PM, Jun Yang wrote:
> I am updating ranker right now to fix some bugs and add some features.
> I would appreciate some more clarification on the default ranking---in
> particular, some definitions. Below is the default ranking rules Susan
> suggested in an earlier message:
>
> 1. Adult males, in reverse age order (youngest to oldest)

I believe that this was indeed the original "default" that we chose  
for adult males, but we also discussed whether we could use the  
previous month's ranking as the default. Or is this default the one  
that gets used if there IS no previous month's ranking?

For all of the categories listed below, the same thing applies -- the  
best default would be "previous month's ranking", but in the absence  
of such a ranking (under what circumstances? Probably rare) these  
would be OK defaults

> 2. Subadult males, in age order (oldest to youngest)
> 3. Adult females, alpha
> 4. Juv males, age order (oldest to youngest)
> 5. Juv females, age order (oldest to youngest)
>
> Here are my interpretations---please correct me if I am wrong:
>
> Adult females: According to rnktypes.query for ADF, these are females
> with mature date (in maturedates) <= ranking date.

Yes

> Juv females: I assume they are females that are not adults???

Yes

> Adult males: According to rnktypes.query for ADM, these are males with
> adult rank attainment date (in rankdates) <= ranking date.

Yes
> Juv males: I assume they are males with age <= 7???

These are males with no mature dates

> Subadult males: I assume they are males that are neither adult males
> or juv males???

These are males for which mature dates is < ranking date but ranked  
date is >= ranking date

Susan

>
> Thanks!
>
> --- Jun Y.
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-----------------------------------------------
Susan Alberts, Dept. Biology, Duke University, Durham NC 27708. Phone  
919-660-7272, Fax 919-660-7293. alberts at duke.edu





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