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| -rw-r--r-- | python/pyspark/mllib/linalg/distributed.py | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/python/pyspark/mllib/linalg/distributed.py b/python/pyspark/mllib/linalg/distributed.py index 0e76050788..e1f022187d 100644 --- a/python/pyspark/mllib/linalg/distributed.py +++ b/python/pyspark/mllib/linalg/distributed.py @@ -297,6 +297,20 @@ class IndexedRowMatrix(DistributedMatrix): """ return self._java_matrix_wrapper.call("numCols") + def columnSimilarities(self): + """ + Compute all cosine similarities between columns. + + >>> rows = sc.parallelize([IndexedRow(0, [1, 2, 3]), + ... IndexedRow(6, [4, 5, 6])]) + >>> mat = IndexedRowMatrix(rows) + >>> cs = mat.columnSimilarities() + >>> print(cs.numCols()) + 3 + """ + java_coordinate_matrix = self._java_matrix_wrapper.call("columnSimilarities") + return CoordinateMatrix(java_coordinate_matrix) + def toRowMatrix(self): """ Convert this matrix to a RowMatrix. |