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Diffstat (limited to 'docs/ml-guide.md')
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1 files changed, 4 insertions, 4 deletions
diff --git a/docs/ml-guide.md b/docs/ml-guide.md index 012fbd91e6..1c2e273414 100644 --- a/docs/ml-guide.md +++ b/docs/ml-guide.md @@ -31,7 +31,7 @@ E.g., a learning algorithm is an `Estimator` which trains on a dataset and produ * **[`Pipeline`](ml-guide.html#pipeline)**: A `Pipeline` chains multiple `Transformer`s and `Estimator`s together to specify an ML workflow. -* **[`Param`](ml-guide.html#param)**: All `Transformer`s and `Estimator`s now share a common API for specifying parameters. +* **[`Param`](ml-guide.html#parameters)**: All `Transformer`s and `Estimator`s now share a common API for specifying parameters. ## ML Dataset @@ -134,7 +134,7 @@ Each stage's `transform()` method updates the dataset and passes it to the next Spark ML `Estimator`s and `Transformer`s use a uniform API for specifying parameters. A [`Param`](api/scala/index.html#org.apache.spark.ml.param.Param) is a named parameter with self-contained documentation. -A [`ParamMap`](api/scala/index.html#org.apache.spark.ml.param.ParamMap)] is a set of (parameter, value) pairs. +A [`ParamMap`](api/scala/index.html#org.apache.spark.ml.param.ParamMap) is a set of (parameter, value) pairs. There are two main ways to pass parameters to an algorithm: @@ -148,7 +148,7 @@ This is useful if there are two algorithms with the `maxIter` parameter in a `Pi # Code Examples This section gives code examples illustrating the functionality discussed above. -There is not yet documentation for specific algorithms in Spark ML. For more info, please refer to the [API Documentation](api/scala/index.html). Spark ML algorithms are currently wrappers for MLlib algorithms, and the [MLlib programming guide](mllib-guide.html) has details on specific algorithms. +There is not yet documentation for specific algorithms in Spark ML. For more info, please refer to the [API Documentation](api/scala/index.html#org.apache.spark.ml.package). Spark ML algorithms are currently wrappers for MLlib algorithms, and the [MLlib programming guide](mllib-guide.html) has details on specific algorithms. ## Example: Estimator, Transformer, and Param @@ -492,7 +492,7 @@ The `ParamMap` which produces the best evaluation metric (averaged over the `$k$ `CrossValidator` finally fits the `Estimator` using the best `ParamMap` and the entire dataset. The following example demonstrates using `CrossValidator` to select from a grid of parameters. -To help construct the parameter grid, we use the [`ParamGridBuilder`](api/scala/index.html#org.apache.spark.ml.tuning.ParamGridGuilder) utility. +To help construct the parameter grid, we use the [`ParamGridBuilder`](api/scala/index.html#org.apache.spark.ml.tuning.ParamGridBuilder) utility. Note that cross-validation over a grid of parameters is expensive. E.g., in the example below, the parameter grid has 3 values for `hashingTF.numFeatures` and 2 values for `lr.regParam`, and `CrossValidator` uses 2 folds. This multiplies out to `$(3 \times 2) \times 2 = 12$` different models being trained. |