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Add needed param to warning for L2 in SDCA #597

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Merged
merged 6 commits into from
Jul 30, 2018
Merged

Add needed param to warning for L2 in SDCA #597

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f03189d
Merge pull request #1 from dotnet/master
justinormont Jun 4, 2018
1421743
Merge pull request #2 from dotnet/master
justinormont Jun 12, 2018
24d939a
Merge pull request #3 from dotnet/master
justinormont Jul 29, 2018
3258e37
Fix warning for L2 in SDCA
justinormont Jul 29, 2018
dc42fee
String interpolation
justinormont Jul 30, 2018
4da3c50
Word-smithing the warning message
justinormont Jul 30, 2018
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9 changes: 4 additions & 5 deletions src/Microsoft.ML.StandardLearners/Standard/LinearClassificationTrainer.cs
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Expand Up @@ -207,10 +207,9 @@ internal virtual void Check(IHostEnvironment env)
{
using (var ch = env.Start("SDCA arguments checking"))
{
ch.Warning("The specified l2Const = {0} is too small. SDCA optimizes the dual objective function. " +
"The dual formulation is only valid with a positive L2 regularization. Also, an l2Const less than {1} " +
"could drastically slow down the convergence. So using l2Const = {1} instead.", L2Const);

ch.Warning($"The L2 regularization constant must be at least {L2LowerBound}. In SDCA, the dual formulation " +
$"is only valid with a positive constant, and values below {L2LowerBound} cause very slow convergence. " +
$"The original {nameof(L2Const)} = {L2Const}, was replaced with {nameof(L2Const)} = {L2LowerBound}.");
L2Const = L2LowerBound;
ch.Done();
}
Expand Down Expand Up @@ -1752,4 +1751,4 @@ public static CommonOutputs.BinaryClassificationOutput TrainBinary(IHostEnvironm

}
}
}
}