Re: How can I implement eigenvalue decomposition in Spark?

2014-08-08 Thread Chunnan Yao
doesn't have such API. Is it possible that I write eigenvalue decomposition from scratch? What should I do? Thanks a lot! Miles Yao View this message in context: How can I implement eigenvalue decomposition in Spark? Sent from the Apache Spark User

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-08 Thread Chitturi Padma
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Re: How can I implement eigenvalue decomposition in Spark?

2014-08-08 Thread Sean Owen
The SVD does not in general give you eigenvalues of its input. Are you just trying to access the U and V matrices? they are also returned in the API. But they are not the eigenvectors of M, as you note. I don't think MLlib has anything to help with the general eigenvector problem. Maybe you can

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-08 Thread Li Pu
@Miles, eigen-decomposition with asymmetric matrix doesn't always give real-value solutions, and it doesn't have the nice properties that symmetric matrix holds. Usually you want to symmetrize your asymmetric matrix in some way, e.g. see

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-08 Thread x
Generally adjacency matrix is undirected(symmetric) on social network, so you can get eigenvectors from SVD computed result. A = UDV^t The first column of U is the biggest eigenvector corresponding to the first value of D. xj @ Tokyo On Sat, Aug 9, 2014 at 4:08 AM, Li Pu

How can I implement eigenvalue decomposition in Spark?

2014-08-07 Thread yaochunnan
-can-I-implement-eigenvalue-decomposition-in-Spark-tp11646.html Sent from the Apache Spark User List mailing list archive at Nabble.com.

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-07 Thread Sean Owen
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Re: How can I implement eigenvalue decomposition in Spark?

2014-08-07 Thread Evan R. Sparks
have such API. Is it possible that I write eigenvalue decomposition from scratch? What should I do? Thanks a lot! Miles Yao View this message in context: How can I implement eigenvalue decomposition in Spark? Sent from the Apache Spark User List

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-07 Thread Li Pu
? What should I do? Thanks a lot! Miles Yao View this message in context: How can I implement eigenvalue decomposition in Spark? Sent from the Apache Spark User List mailing list archive at Nabble.com

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-07 Thread Shivaram Venkataraman
decomposition from scratch? What should I do? Thanks a lot! Miles Yao View this message in context: How can I implement eigenvalue decomposition in Spark? Sent from the Apache Spark User List mailing list archive at Nabble.com

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-07 Thread x
View this message in context: How can I implement eigenvalue decomposition in Spark? Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-07 Thread Chunnan Yao
View this message in context: How can I implement eigenvalue decomposition in Spark? Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr

Re: How can I implement eigenvalue decomposition in Spark?

2014-08-07 Thread x
this message in context: How can I implement eigenvalue decomposition in Spark? Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org