Github user feynmanliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/8197#discussion_r37140386
--- Diff: docs/ml-guide.md ---
@@ -801,6 +801,146 @@ jsc.stop();
</div>
+## Examples: Summaries for LogisticRegression.
+
+Once
[`LogisticRegression`](api/scala/index.html#org.apache.spark.ml.classification.LogisticRegression)
+is run on data, it is useful to extract statistics such as the
+loss per iteration which will provide an intuition on overfitting and
metrics to understand
+how well the model has performed on training and test data.
+
+[`LogisticRegressionTrainingSummary`](api/scala/index.html#org.apache.spark.mllib.classification.LogisticRegressionTrainingSummary)
+provides an interface to access such relevant information. i.e the
objectiveHistory and metrics
--- End diff --
"`objectiveHistory`" and "`metric`" (surround code with backticks so docs
apply correct styles to it)
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