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Changes between Version 6 and Version 7 of UsageExamples


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Timestamp:
Jan 30, 2017, 2:23:05 PM (7 years ago)
Author:
Clarence Wret
Comment:

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  • UsageExamples

    v6 v7  
    5050= Fake data studies with `nuismin` =
    5151
    52 `nuismin` supports fake-data studies for validation purposes. Its aim is to study fitting biases and general troubleshooting of parameter responses.
     52`nuismin` supports fake-data studies for validation purposes. The user can set the data as the MC and see if the minimiser routine is able to reach the known parameter value. Its aim is to study fitting biases and general troubleshooting of parameter responses. It can also be useful for choosing the used fitting routines (e.g. Simplex, GSL, Migrad).
    5353
    54 Supply `-d MC` to the argument list to use the generator MC as fake-data. You can also specify reweight parameters for the fake-data in the card file by adding 
     54Supply `-d MC` to the argument list to use the generator MC as fake-data. You can also specify reweight parameters for the fake-data in the card file by adding
    5555
    5656{{{
     
    5858}}}
    5959
    60 to the card file to reweight the generator output to some variation and set that to the data. The data will now be some parameter variation of the MC, and (hopefully) the fit routine will converge on this parameter.
     60to the card file to reweight the generator to some variation and set that to the data. The data will now be some parameter variation of the MC, and (hopefully) the fit routine will converge on this parameter.
    6161
    6262You can also specify `-d FILE_LOCATION.root` to set the fake-data to a MC histogram that has been previously produced through NUISANCE.
    6363
    64 E.g. the output of a fit result to `ANL_CC1ppip_XSec_1DEnu_nu` will produce some output file `MyOutput.root`, containing a histogram `ANL_CC1ppip_XSec_1DEnu_nu_MC`. Feeding `nuismin` `-d MyOutput.root` in addition to a card file specifying `sample ANL_CC1ppip_XSec_1DEnu_nu MY_GENERATOR:GENERATOR_FILE_LOCATION.root` will find the `_MC` histogram in `MyOutput.root` and set it to the data in the new `nuismin` program.
     64{{{
     65#!div class="note"
     66The output of a fit result to `ANL_CC1ppip_XSec_1DEnu_nu` will produce some output file `MyOutput.root`, containing a histogram `ANL_CC1ppip_XSec_1DEnu_nu_MC`.
    6567
     68Feeding `nuismin` `-d MyOutput.root` in addition to a card file specifying
     69{{{
     70sample ANL_CC1ppip_XSec_1DEnu_nu MY_GENERATOR:GENERATOR_FILE_LOCATION.root`
     71}}}
     72will find the `_MC` histogram in `MyOutput.root` and set it to the data in the new `nuismin` program.
     73}}}
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    6775