| static MatrixBlock | MLContextConversionUtil. binaryBlocksToMatrixBlock(org.apache.spark.api.java.JavaPairRDD<MatrixIndexes,MatrixBlock> binaryBlocks,
                         MatrixMetadata matrixMetadata) | Convert a JavaPairRDD<MatrixIndexes, MatrixBlock>to aMatrixBlock | 
| static MatrixObject | MLContextConversionUtil. binaryBlocksToMatrixObject(org.apache.spark.api.java.JavaPairRDD<MatrixIndexes,MatrixBlock> binaryBlocks,
                          MatrixMetadata matrixMetadata) | Convert a JavaPairRDD<MatrixIndexes, MatrixBlock>to aMatrixObject. | 
| static org.apache.spark.api.java.JavaPairRDD<MatrixIndexes,MatrixBlock> | MLContextConversionUtil. dataFrameToMatrixBinaryBlocks(org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> dataFrame,
                             MatrixMetadata matrixMetadata) | Convert a DataFrameto aJavaPairRDD<MatrixIndexes, MatrixBlock>binary-block matrix. | 
| static MatrixObject | MLContextConversionUtil. dataFrameToMatrixObject(org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> dataFrame,
                       MatrixMetadata matrixMetadata) | Convert a DataFrameto aMatrixObject. | 
| static void | MLContextConversionUtil. determineMatrixFormatIfNeeded(org.apache.spark.sql.Dataset<org.apache.spark.sql.Row> dataFrame,
                             MatrixMetadata matrixMetadata) | If the MatrixFormat of the DataFrame has not been explicitly specified,
 attempt to determine the proper MatrixFormat. | 
| static MatrixObject | MLContextConversionUtil. doubleMatrixToMatrixObject(String variableName,
                          double[][] doubleMatrix,
                          MatrixMetadata matrixMetadata) | Convert a two-dimensional double array to a MatrixObject. | 
| static boolean | MLContextConversionUtil. isDataFrameWithIDColumn(MatrixMetadata matrixMetadata) | Return whether or not the DataFrame has an ID column. | 
| static boolean | MLContextConversionUtil. isVectorBasedDataFrame(MatrixMetadata matrixMetadata) | Return whether or not the DataFrame is vector-based. | 
| static MatrixObject | MLContextConversionUtil. javaRDDStringCSVToMatrixObject(org.apache.spark.api.java.JavaRDD<String> javaRDD,
                              MatrixMetadata matrixMetadata) | Convert a JavaRDD<String>in CSV format to aMatrixObject | 
| static MatrixObject | MLContextConversionUtil. javaRDDStringIJVToMatrixObject(org.apache.spark.api.java.JavaRDD<String> javaRDD,
                              MatrixMetadata matrixMetadata) | Convert a JavaRDD<String>in IJV format to aMatrixObject. | 
| static MatrixObject | MLContextConversionUtil. matrixBlockToMatrixObject(String variableName,
                         MatrixBlock matrixBlock,
                         MatrixMetadata matrixMetadata) | Convert a MatrixBlockto aMatrixObject. | 
| static MatrixObject | MLContextConversionUtil. rddStringCSVToMatrixObject(org.apache.spark.rdd.RDD<String> rdd,
                          MatrixMetadata matrixMetadata) | Convert a RDD<String>in CSV format to aMatrixObject | 
| static MatrixObject | MLContextConversionUtil. rddStringIJVToMatrixObject(org.apache.spark.rdd.RDD<String> rdd,
                          MatrixMetadata matrixMetadata) | Convert a RDD<String>in IJV format to aMatrixObject. | 
| static MatrixObject | MLContextConversionUtil. urlToMatrixObject(URL url,
                 MatrixMetadata matrixMetadata) | Convert a matrix at a URL to a MatrixObject. |