I am running LogisticRegressionWithLBFGS. I got these lines on my console:
2015-03-12 17:38:03,897 ERROR breeze.optimize.StrongWolfeLineSearch | Encountered bad values in function evaluation. Decreasing step size to 0.5 2015-03-12 17:38:03,967 ERROR breeze.optimize.StrongWolfeLineSearch | Encountered bad values in function evaluation. Decreasing step size to 0.25 2015-03-12 17:38:04,036 ERROR breeze.optimize.StrongWolfeLineSearch | Encountered bad values in function evaluation. Decreasing step size to 0.125 2015-03-12 17:38:04,105 ERROR breeze.optimize.StrongWolfeLineSearch | Encountered bad values in function evaluation. Decreasing step size to 0.0625 2015-03-12 17:38:04,176 ERROR breeze.optimize.StrongWolfeLineSearch | Encountered bad values in function evaluation. Decreasing step size to 0.03125 2015-03-12 17:38:04,247 ERROR breeze.optimize.StrongWolfeLineSearch | Encountered bad values in function evaluation. Decreasing step size to 0.015625 2015-03-12 17:38:04,317 ERROR breeze.optimize.StrongWolfeLineSearch | Encountered bad values in function evaluation. Decreasing step size to 0.0078125 2015-03-12 17:38:04,461 ERROR breeze.optimize.StrongWolfeLineSearch | Encountered bad values in function evaluation. Decreasing step size to 0.005859375 2015-03-12 17:38:04,605 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:04,672 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:04,747 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:04,818 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:04,890 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:04,962 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:05,038 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:05,107 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:05,186 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:05,256 INFO breeze.optimize.StrongWolfeLineSearch | Line search t: NaN fval: NaN rhs: NaN cdd: NaN 2015-03-12 17:38:05,257 ERROR breeze.optimize.LBFGS | Failure! Resetting history: breeze.optimize.FirstOrderException: Line search zoom failed What causes them and how do I fix them? I checked my data and there seemed nothing out of the ordinary. The resulting prediction model seemed acceptable to me. So, are these ERRORs actually WARNINGs? Could we or should we tune the level of these messages down one notch? -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/LogisticRegressionWithLBFGS-shows-ERRORs-tp22042.html Sent from the Apache Spark User List mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
