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https://issues.apache.org/jira/browse/SPARK-10078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15793488#comment-15793488
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Seth Hendrickson commented on SPARK-10078:
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[~yanboliang] I was a bit confused by the following comment under new
requirements for VL-BFGS:
"API consistency with Breeze L-BFGS so we can migrate existing code smoothly."
What existing code are we migrating, and to where/what? Are we planning to
replace the use of the Breeze LBFGS solvers with this VL-BFGS implementation?
If so, what about the numerous use cases that do not need to partition by
features? Thanks!
> Vector-free L-BFGS
> ------------------
>
> Key: SPARK-10078
> URL: https://issues.apache.org/jira/browse/SPARK-10078
> Project: Spark
> Issue Type: New Feature
> Components: ML
> Reporter: Xiangrui Meng
> Assignee: Yanbo Liang
>
> This is to implement a scalable version of vector-free L-BFGS
> (http://papers.nips.cc/paper/5333-large-scale-l-bfgs-using-mapreduce.pdf).
> Design document:
> https://docs.google.com/document/d/1VGKxhg-D-6-vZGUAZ93l3ze2f3LBvTjfHRFVpX68kaw/edit?usp=sharing
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