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excelsource
Contributor I
Hi everyeone,
i want to make a roc chart with a excel source but i cant cause it's says a tag problem.
I got an excel file with 2 column named person and get money? so, muy question is, how can i resolve the tag problem and make rapid draw the roc curves?
and other thing about the plot of roc curve is this. I used the arff source with the titanic.arff.with this code
<operator name="Root" class="Process" expanded="yes">
<operator name="ArffExampleSource" class="ArffExampleSource">
<parameter key="data_file" value="C:\Facultad\Grupo investigacion\rm_workspace\sample\data\titanic.arff"/>
<parameter key="label_attribute" value="survived"/>
</operator>
<operator name="DecisionTree" class="DecisionTree">
<parameter key="keep_example_set" value="true"/>
</operator>
<operator name="ROCChart" class="ROCChart">
</operator>
</operator>
in this case i could make the rapid draw the roc curve but i cant realize the meanning of the grafic, if someone can help me i tahnx a lot!!!!!
thanx, leo
i want to make a roc chart with a excel source but i cant cause it's says a tag problem.
I got an excel file with 2 column named person and get money? so, muy question is, how can i resolve the tag problem and make rapid draw the roc curves?
and other thing about the plot of roc curve is this. I used the arff source with the titanic.arff.with this code
<operator name="Root" class="Process" expanded="yes">
<operator name="ArffExampleSource" class="ArffExampleSource">
<parameter key="data_file" value="C:\Facultad\Grupo investigacion\rm_workspace\sample\data\titanic.arff"/>
<parameter key="label_attribute" value="survived"/>
</operator>
<operator name="DecisionTree" class="DecisionTree">
<parameter key="keep_example_set" value="true"/>
</operator>
<operator name="ROCChart" class="ROCChart">
</operator>
</operator>
in this case i could make the rapid draw the roc curve but i cant realize the meanning of the grafic, if someone can help me i tahnx a lot!!!!!
thanx, leo
0
Answers
ROC-Curves are explained here: http://home.comcast.net/~tom.fawcett/public_html/papers/ROC101.pdf or (easier to read I guess) here: http://en.wikipedia.org/wiki/Receiver_operating_characteristic
The authors of these articles did a good job, so who I am to reproduce them
If you have a more specific question, feel free to come back and ask.
regards,
Steffen
PS: Your process causes severe overfitting and hence no meaningful roc-curves. Use XValidation to solve this problem.
PPS: If (in the future) errors occur, please post the complete message here instead of reproducing it with your own words. This way it will be easier for us to help.