parallelgithub opened a new issue #9781: Where to find argument definition with String type URL: https://github.com/apache/incubator-mxnet/issues/9781 I would like to transform the following Python to Scala: ```python weight = mx.symbol.Variable("linear_weight", shape=(num_linear_features, 2), init=norm_init, stype='row_sparse') ``` It seems like Scala's `Variable` only accept parameters: (**name**: `String`, **attr**: `Map[String, String]`). How do I make sure the key of **attr** is correct when I assign it into `Map`? Especially, in above Python code **init** is Initializer, which is not `String` type. I have no idea know how to set it in `attr`. Another similar issue is about MNIST example. In this [tutorial](https://github.com/apache/incubator-mxnet/tree/master/scala-package): ```scala val trainDataIter = IO.MNISTIter(Map( "image" -> "data/train-images-idx3-ubyte", "label" -> "data/train-labels-idx1-ubyte", "data_shape" -> "(1, 28, 28)", "label_name" -> "sm_label", ... ``` it use **data_shape** as the key of `Map`. On the other hand, in this [example code](https://github.com/apache/incubator-mxnet/blob/master/scala-package/examples/src/main/scala/ml/dmlc/mxnetexamples/module/MnistMlp.scala): ```scala val train = IO.MNISTIter(Map( ? "image" -> (inst.dataDir + "train-images-idx3-ubyte"), ? "label" -> (inst.dataDir + "train-labels-idx1-ubyte"), ? "label_name" -> "softmax_label", ? "input_shape" -> "(784,)", ? "batch_size" -> inst.batchSize.toString, ... ``` it use **input_shape** as the key of `Map`. The Scala code is auto-generated from C++, where can I find these `String` type argument definition using in `Map`?
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