mahout-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ted Dunning (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAHOUT-1236) Need a cleaned up serialized format for Vectors to handle names and all other kinds of things
Date Sat, 01 Jun 2013 18:09:20 GMT
Ted Dunning created MAHOUT-1236:
-----------------------------------

             Summary: Need a cleaned up serialized format for Vectors to handle names and
all other kinds of things
                 Key: MAHOUT-1236
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1236
             Project: Mahout
          Issue Type: Bug
            Reporter: Ted Dunning


Our current serialization is subject several ills

a) it breaks alignment by having a 1 byte flag field (evil, generic)

b) it doesn't handle any kind of extensible format like protobufs so it isn't future-proof

c) it doesn't handle named vectors very well

d) it totally breaks with any other kind of decoration as with Centroids or WeightedVector
or ... (see b)

I propose that we use the current tag byte on the current serialization with a new flag bit
that indicates that the vector will use a protobuf encoding.  Then 3 bytes will be skipped
to restore alignment.  Then there will be a protobuf encoding for the vector. 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message