mllib CoordinateMatrix
after creating a coordinate matrix from my rdd[matrixentry]... 1. how can i get/query the value at coordiate (i, j)? 2. how can i set/update the value at coordiate (i, j)? 3. how can i get all the values on a specific row i, ideally as a vector? thanks! -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/mllib-CoordinateMatrix-tp16412.html Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
Re: mllib CoordinateMatrix
Hello, CoordinateMatrix is in its infancy, and right now is only a placeholder. To get/set the value at (i,j), you should map the entries rdd using the usual rdd map operation, and change the relevant entries. To get the values on a specific row, you can call toIndexedRowMatrix(), which returns a RowMatrix https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/mllib/linalg/distributed/IndexedRowMatrix.scala with indices. Best, Reza On Tue, Oct 14, 2014 at 1:18 PM, ll duy.huynh@gmail.com wrote: after creating a coordinate matrix from my rdd[matrixentry]... 1. how can i get/query the value at coordiate (i, j)? 2. how can i set/update the value at coordiate (i, j)? 3. how can i get all the values on a specific row i, ideally as a vector? thanks! -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/mllib-CoordinateMatrix-tp16412.html Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
Re: mllib CoordinateMatrix
thanks reza! On Tue, Oct 14, 2014 at 5:02 PM, Reza Zadeh r...@databricks.com wrote: Hello, CoordinateMatrix is in its infancy, and right now is only a placeholder. To get/set the value at (i,j), you should map the entries rdd using the usual rdd map operation, and change the relevant entries. To get the values on a specific row, you can call toIndexedRowMatrix(), which returns a RowMatrix https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/mllib/linalg/distributed/IndexedRowMatrix.scala with indices. Best, Reza On Tue, Oct 14, 2014 at 1:18 PM, ll duy.huynh@gmail.com wrote: after creating a coordinate matrix from my rdd[matrixentry]... 1. how can i get/query the value at coordiate (i, j)? 2. how can i set/update the value at coordiate (i, j)? 3. how can i get all the values on a specific row i, ideally as a vector? thanks! -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/mllib-CoordinateMatrix-tp16412.html Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
