diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,7 @@
 
 train-seminer: data/seminer/deu.train.lrec-2010-raw.model \
                data/seminer/deu.train.lrec-2010.model \
-               data/seminer/bbn-wsj-22-rate-0.001-beam-10-iter-10-hash-relationfactory-2013.model
+               data/seminer/bbn-wsj-02-21-rate-0.001-beam-10-iter-10-hash-stop-win-size-10-relationfactory-2013.model
 
 data/seminer/deu.train.lrec-2010.model: data/seminer/lrec-2010.features \
                                         data/seminer/deu.train.bio.brown \
@@ -21,7 +21,7 @@
 	./bin/sequor train data/seminer/lrec-2010.features \
          data/seminer/deu.train.bio.brown \
          data/seminer/deu.train.lrec-2010.model --hash \
-         --heldout data/seminer/deu.testa.bio.brown  --iter 20 \
+         --heldout data/seminer/deu.testa.bio.brown  --iter 20 --stop-win-size 20 \
          --min-count 100 --rate 0.001 --beam 9
 
 data/seminer/deu.train.lrec-2010-raw.model: data/seminer/lrec-2010-raw.features \
@@ -30,7 +30,7 @@
 	./bin/sequor train data/seminer/lrec-2010-raw.features \
         data/seminer/deu.train.bio.raw.brown \
         data/seminer/deu.train.lrec-2010-raw.model --hash \
-        --heldout data/seminer/deu.testa.bio.raw.brown  --iter 20 \
+        --heldout data/seminer/deu.testa.bio.raw.brown  --iter 20 --stop-win-size 20 \
         --min-count 100 --rate 0.001 --beam 9
 
 
@@ -59,13 +59,13 @@
            > data/seminer/deu.testa.bio.brown
 
 
-data/seminer/bbn-wsj-22-rate-0.001-beam-10-iter-10-hash-relationfactory-2013.model: \
+data/seminer/bbn-wsj-02-21-rate-0.001-beam-10-iter-10-hash-stop-win-size-10-relationfactory-2013.model: \
   data/seminer/relationfactory-2013.features \
   data/seminer/bbn-wsj-02-21.reduced2.brown \
   data/seminer/bbn-wsj-22.reduced2.brown
 	./bin/sequor train data/seminer/relationfactory-2013.features \
                      data/seminer/bbn-wsj-02-21.reduced2.brown $@ \
-                     --rate=0.001 --beam=10 --iter=10 --hash \
+                     --rate=0.001 --beam=10 --iter=10 --hash --stop-win-size=10 \
                      --heldout=data/seminer/bbn-wsj-22.reduced2.brown
 
 data/seminer/bbn-wsj-02-21.reduced2.brown: \
diff --git a/bin/seminer b/bin/seminer
--- a/bin/seminer
+++ b/bin/seminer
@@ -26,6 +26,6 @@
             $SEMINER_ROOT/bin/augment brown False \
 	    $SEMINER_ROOT/data/seminer/nant.c5.500.topics.classes |\
             $SEMINER_ROOT/bin/sequor predict \
-	    $SEMINER_ROOT/data/seminer/bbn-wsj-22-rate-0.001-beam-10-iter-10-hash-relationfactory-2013.model
+	    $SEMINER_ROOT/data/seminer/bbn-wsj-02-21-rate-0.001-beam-10-iter-10-hash-stop-win-size-10-relationfactory-2013.model
 	;;
 esac
diff --git a/data/seminer/bbn-wsj-02-21-rate-0.001-beam-10-iter-10-hash-stop-win-size-10-relationfactory-2013.model b/data/seminer/bbn-wsj-02-21-rate-0.001-beam-10-iter-10-hash-stop-win-size-10-relationfactory-2013.model
new file mode 100644
# file too large to diff: data/seminer/bbn-wsj-02-21-rate-0.001-beam-10-iter-10-hash-stop-win-size-10-relationfactory-2013.model
diff --git a/data/seminer/bbn-wsj-22-rate-0.001-beam-10-iter-10-hash-relationfactory-2013.model b/data/seminer/bbn-wsj-22-rate-0.001-beam-10-iter-10-hash-relationfactory-2013.model
deleted file mode 100644
# file too large to diff: data/seminer/bbn-wsj-22-rate-0.001-beam-10-iter-10-hash-relationfactory-2013.model
diff --git a/data/seminer/deu.train.lrec-2010-raw.model b/data/seminer/deu.train.lrec-2010-raw.model
# file too large to diff: data/seminer/deu.train.lrec-2010-raw.model
diff --git a/data/seminer/deu.train.lrec-2010.model b/data/seminer/deu.train.lrec-2010.model
# file too large to diff: data/seminer/deu.train.lrec-2010.model
diff --git a/lib/seminer/seminer b/lib/seminer/seminer
--- a/lib/seminer/seminer
+++ b/lib/seminer/seminer
@@ -26,6 +26,6 @@
             $SEMINER_ROOT/bin/augment brown False \
 	    $SEMINER_ROOT/data/seminer/nant.c5.500.topics.classes |\
             $SEMINER_ROOT/bin/sequor predict \
-	    $SEMINER_ROOT/data/seminer/bbn-wsj-22-rate-0.001-beam-10-iter-10-hash-relationfactory-2013.model
+	    $SEMINER_ROOT/data/seminer/bbn-wsj-02-21-rate-0.001-beam-10-iter-10-hash-stop-win-size-10-relationfactory-2013.model
 	;;
 esac
diff --git a/sequor.cabal b/sequor.cabal
--- a/sequor.cabal
+++ b/sequor.cabal
@@ -1,5 +1,5 @@
 Name:                sequor
-Version:             0.7.1
+Version:             0.7.2
 Description:         A sequence labeler based on Collins's sequence perceptron.
 Synopsis:	     A sequence labeler based on Collins's sequence perceptron.
 Homepage:	     https://bitbucket.org/gchrupala/sequor
@@ -23,7 +23,7 @@
                      seminer/deu.train.lrec-2010-raw.model,
                      seminer/relationfactory-2013.features,
 		     seminer/nant.c5.500.topics.classes,
-                     seminer/bbn-wsj-22-rate-0.001-beam-10-iter-10-hash-relationfactory-2013.model
+                     seminer/bbn-wsj-02-21-rate-0.001-beam-10-iter-10-hash-stop-win-size-10-relationfactory-2013.model
                      
 Library
   Build-depends:     base >= 3 && < 5, 
diff --git a/src/sequor.hs b/src/sequor.hs
--- a/src/sequor.hs
+++ b/src/sequor.hs
@@ -7,7 +7,7 @@
 import qualified Data.Binary as Binary
 import qualified Data.ByteString.Lazy as ByteString
 import System.Environment (getArgs)
-import System.IO (hPutStrLn,stderr)
+import System.IO
 import Helper.Commands ( CommandSpec (..),defaultMain , usage 
                 , Command
                 , OptDescr(Option), ArgDescr(ReqArg,NoArg))
@@ -65,7 +65,8 @@
                Nothing -> return []
                Just testf -> (map toLabeled . parse) `fmap` Text.readFile testf
   let (m, info) =  L.train flags template traindat testdat          
-  putStr . formatTrace $ info
+  hSetBuffering stderr LineBuffering
+  hPutStr stderr . formatTrace $ info
   ByteString.writeFile outf  . Binary.encode $ m
 
 predict :: Command Flags