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Weichen Xu edited comment on SPARK-10078 at 1/12/17 4:54 AM: ------------------------------------------------------------- As the detail problems I list above(I only list a small part problems), in my opinion, breeze can provide the following base class and/or abstract interface: FirstOrderMinimizer DiffFunction interface LineSearch implementation (including StrongWolfeLinsearch and BacktrackingLinesearch) DistributedVector abstract interface BUT, the core logic of VF-LBFGS and VF-OWLQN (based on VF-LBFGS) should be implemented in spark mllib, for better optimization. was (Author: weichenxu123): As the detail problems I list above(I only list a small part problems), in my opinion, breeze can provide the following base class and/or abstract interface: FirstOrderMinimizerlevel DiffFunction interface LineSearch implementation (including StrongWolfeLinsearch and BacktrackingLinesearch) DistributedVector abstract interface BUT, the core logic of VF-LBFGS and VF-OWLQN (based on VF-LBFGS) should be implemented in spark mllib, for better optimization. > 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 -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org