Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/14194#discussion_r71985958
--- Diff: docs/ml-features.md ---
@@ -815,7 +815,7 @@ The rescaled value for a feature E is calculated as,
`\begin{equation}
Rescaled(e_i) = \frac{e_i - E_{min}}{E_{max} - E_{min}} * (max - min) +
min
\end{equation}`
-For the case `E_{max} == E_{min}`, `Rescaled(e_i) = 0.5 * (max + min)`
+For the case `$E_{max} == E_{min}$`, `$Rescaled(e_i) = 0.5 * (max + min)$`
--- End diff --
Hm, right. Actually we have several instances where latex is used in
scaladoc and it doesn't render, like
https://spark.apache.org/docs/2.0.0-preview/api/scala/index.html#org.apache.spark.mllib.optimization.LogisticGradient
Most are private classes. It's even in a log message in
GradientDescentSuite. This looks OK to me as-is; you're also welcome to clean
up all the useless latex in log messages / scaladoc while here.
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