by eyeballing the code, i think i don' t see a problem. if rows of A are named values, then row of U (or U*Sigma or U*Sigma^1/2) would also retain names from values of rows of A. Output would not contain NamedVector values for rows that were not NamedVector values themselves in the input. Does seq2sparse output create NamedVectors as values ?
Note that if what you want is to have *keys* from from seq2sparse (such as 'file_1') propagated to name of named vector value in U, that much is not happening. The algorithm propagates keys to keys or/and names to names (but not any other combinations of those). -d On Fri, Aug 2, 2013 at 10:42 AM, Dmitriy Lyubimov <[email protected]> wrote: > it should. i worked on the issue and last time it was checked it was still > working with name propagation. if not, then it is a bug > > > On Fri, Aug 2, 2013 at 3:33 AM, Stuti Awasthi <[email protected]>wrote: > >> Hey Ted, >> >> As suggested, I tried SSVD with Mahout 0.8. I think the issue of >> NamedVector not propagating to the output U ,still persists. >> Here is what I have done : >> >> 1. Created featureVector using "seq2sparse" with -nv option. Checked the >> output, named vector created. >> 2. Provided this featureVector to "ssvd" with params " -k 100 -U true -V >> true". After execution, 3 output got generated namely : sigma, U, V >> 3. I dumped "U" to check the output if it contained namedVectors: >> >> mahout-distribution-0.7/bin/mahout seqdumper -i /stuti/SSVD/Output/U | >> more >> Output: >> Key: /File_1: Value: >> {0:0.027019746696983288,1:0.006124424321845726,2:0.0334311500858222,.....} >> >> I did not see the NamedVector getting created in the output of ssvd. >> Please point out if I have missed any step in between. >> >> As I wanted to perform the Clustering, I took the output of "U" and >> generated the NamedVector with custom code. The output looks like this : >> Key: /File_1: Value: >> /File_1:{0:0.027019746696983288,1:0.006124424321845726,2:0.0334311500858222,.....} >> >> Then I fed this namedvector file to KMeans to generate 10 Clusters. In >> this I have used Random Centroid selection with KMeans. >> Finally I dumped the ClusterOutput as : >> <ClusterId>,<DocumentID1>,<DocumentId2>..... >> >> Please let me know if I have performed any mistake in the end to end >> execution as well Im not sure Why SSVD output is not generating the named >> vectors as the issue id fixed.. >> >> Please suggest >> >> Regards >> Stuti Awasthi >> >> >> >> >> >> -----Original Message----- >> From: Ted Dunning [mailto:[email protected]] >> Sent: Thursday, August 01, 2013 8:37 PM >> To: [email protected] >> Subject: Re: How to SSVD output to generate Clusters >> >> On Thu, Aug 1, 2013 at 5:49 AM, Stuti Awasthi <[email protected]> >> wrote: >> >> > I think there is a problem because of NamedVector as after some search >> > I get this Jira. https://issues.apache.org/jira/browse/MAHOUT-1067 >> > >> >> Note also that this bug is fixed in 0.8 >> >> >> ::DISCLAIMER:: >> >> ---------------------------------------------------------------------------------------------------------------------------------------------------- >> >> The contents of this e-mail and any attachment(s) are confidential and >> intended for the named recipient(s) only. >> E-mail transmission is not guaranteed to be secure or error-free as >> information could be intercepted, corrupted, >> lost, destroyed, arrive late or incomplete, or may contain viruses in >> transmission. The e mail and its contents >> (with or without referred errors) shall therefore not attach any >> liability on the originator or HCL or its affiliates. >> Views or opinions, if any, presented in this email are solely those of >> the author and may not necessarily reflect the >> views or opinions of HCL or its affiliates. Any form of reproduction, >> dissemination, copying, disclosure, modification, >> distribution and / or publication of this message without the prior >> written consent of authorized representative of >> HCL is strictly prohibited. If you have received this email in error >> please delete it and notify the sender immediately. >> Before opening any email and/or attachments, please check them for >> viruses and other defects. >> >> >> ---------------------------------------------------------------------------------------------------------------------------------------------------- >> > >
