Comments (4)
Dear @MikeMcC399,
the 'cwa-server' doesn't collect any nor calculates any statistics, but it reads in a json file coming from CWA-Analytics framework and transforms it into protobuf structure, which is then consumed by the mobile clients, when you open your app.
Unfortunately I don't have all the details where the CWA-Analytics framework gets its information from. But for sure its using the RKI as one of the data-sources.
I hope that answers your question.
Regards,
Hilmar
from cwa-server.
Thanks for your answer about the statistics! I don't believe there is any documentation on GitHub regarding the CWA-Analytics framework, which is a new term for me.
The FAQ article https://www.coronawarn.app/en/faq/#further_details refers to data from RKI and there was no question for me that the original infection numbers come directly from RKI.
I was interested in the trend calculations and to be concrete, the 7-Day Incidence.
Does the trend for the 7-Day Incidence indicator come directly from the CWA-Analytics framework? Or does the CWA server keep historical data stored and calculate itself whether the value is trending upwards, staying steady or trending downwards. I would like to be able to point to lines of code to confirm that the 7-Day Incidence trend is based on comparing the value with the previous day and using a ±1% band for the determination of a steady trend (rather than comparing with the value one week previously and using a ±5% steady trend band).
from cwa-server.
Hi @MikeMcC399,
the cwa-server does not do any trend calculation. As mentioned, it's just reading json (e.g. services/distribution/src/test/resources/stats and produces protobuf common/protocols/src/main/proto/app/coronawarn/server/common/protocols/internal/stats. What the 'distribution' service does here is a 'mapping' of the trend-numbers from the json to the trend-enums in the protobuf.
No gathering of numbers, no real calculation.
Regards,
Hilmar
from cwa-server.
@hilmarf
Thanks for the detailed confirmation of your previous statement!
from cwa-server.
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