diff --git a/lib/config.mk b/lib/config.mk
index 8e90eec8..4cb089bc 100644
--- a/lib/config.mk
+++ b/lib/config.mk
@@ -740,6 +740,8 @@ ${WORKDIR}/${MODELCONFIG}:
 	@echo "TESTSET     = ${TESTSET}"     >> $@
 	@echo "PRE         = ${PRE}"         >> $@
 	@echo "SUBWORDS    = ${SUBWORDS}"    >> $@
+	@echo "MODEL_SRCVOCAB = ${MODEL_SRCVOCAB}" >> $@
+	@echo "MODEL_TRGVOCAB = ${MODEL_TRGVOCAB}" >> $@
 ifdef SHUFFLE_DATA
 	@echo "SHUFFLE_DATA      = ${SHUFFLE_DATA}"       >> $@
 endif
diff --git a/lib/data.mk b/lib/data.mk
index 90763871..0acedf68 100644
--- a/lib/data.mk
+++ b/lib/data.mk
@@ -82,6 +82,13 @@ ifeq (${USE_FORWARDTRANS},1)
   FORWARDTRANS_TRG = ${patsubst %.${SRCEXT}.gz,%.${TRGEXT}.gz,${FORWARDTRANS_SRC}}
 endif
 
+# forward-translation data (source-to-target)
+# filtered by reconstruction scores (ce filter)
+ifneq (${USE_FORWARDTRANS_SELECTED},)
+  FORWARDTRANS_SRC += ${sort ${wildcard ${FORWARDTRANS_HOME}/${SRC}-${TRG}/latest/*.${SRCEXT}.best${USE_FORWARDTRANS_SELECTED}.gz}}
+  FORWARDTRANS_TRG = ${patsubst %.${SRCEXT}.gz,%.${TRGEXT}.gz,${FORWARDTRANS_SRC}}
+endif
+
 # forward-translation data of monolingual data (source-to-target)
 ifeq (${USE_FORWARDTRANSMONO},1)
   FORWARDTRANSMONO_SRC = ${sort ${wildcard ${BACKTRANS_HOME}/${SRC}-${TRG}/latest/*.${SRCEXT}.gz}}
diff --git a/lib/generic.mk b/lib/generic.mk
index 86679dbc..4d193b82 100644
--- a/lib/generic.mk
+++ b/lib/generic.mk
@@ -321,6 +321,29 @@ endif
 #		MODELCONFIG=config-ft.mk \
 
 
+
+# use a selected set of forward translation
+
+# default for ce-filter
+FT_SELECTED ?= 95
+
+%-ftbest:
+	for s in ${SRCLANGS}; do \
+	  for t in ${TRGLANGS}; do \
+	    if [ -e ${FORWARDTRANS_HOME}/$$s-$$t/latest ]; then \
+	      ${MAKE} -C ${FORWARDTRANS_HOME} SRC=$$s TRG=$$t \
+			RETAIN=${FT_SELECTED} extract-best-translations; \
+	    fi \
+	  done \
+	done
+	${MAKE} DATASET=${DATASET}+ft${FT_SELECTED} \
+		USE_FORWARDTRANS_SELECTED=${FT_SELECTED} \
+	${@:-ftbest=}
+
+
+
+
+
 ## add forward translation of monolingual data
 %-ftmono:
 	${MAKE} DATASET=${DATASET}+ftmono USE_FORWARDTRANSMONO=1 ${@:-ftmono=}
@@ -340,8 +363,9 @@ endif
 ## don't use the regular parallel training data
 ## (only makes sense if bt, ft, or pivot-based data are activated)
 %-nopar:
-	${MAKE} DATASET=${DATASET}+nopar TRAINSET= TATOEBA_TRAINSET= ${@:-nopar=}
+	${MAKE} DATASET=${DATASET}+nopar TRAINSET= ${@:-nopar=}
 
+# TATOEBA_TRAINSET=
 
 ##-------------------------------------------------------------
 ## default: make separate sentencepiece models
@@ -371,9 +395,10 @@ endif
 		USE_FORWARDTRANS=1 \
 		CONTINUE_EXISTING=1 \
 		MARIAN_EARLY_STOPPING=${FT_MARIAN_EARLY_STOPPING} \
-		TRAINSET= TATOEBA_TRAINSET= \
+		TRAINSET= \
 	${@:-ftonly=}
 
+# TATOEBA_TRAINSET= \
 #		MODELCONFIG=config-ft.mk \
 
 
diff --git a/lib/slurm.mk b/lib/slurm.mk
index ad965f0f..b8eb6b07 100644
--- a/lib/slurm.mk
+++ b/lib/slurm.mk
@@ -20,6 +20,9 @@ endif
 
 SLURM_JOBNAME ?= $(subst -,,${LANGPAIRSTR})
 
+## comma separated nodes to be excluded
+# BROKEN_NODES = g6301
+
 %.submit:
 	mkdir -p ${WORKDIR}
 	echo '#!/bin/bash -l' > $@
@@ -36,6 +39,9 @@ endif
 	echo '#SBATCH -p ${HPC_GPUQUEUE}' >> $@
 	echo '#SBATCH ${HPC_GPU_ALLOCATION}' >> $@
 	echo '#SBATCH -t ${HPC_TIME}:00' >> $@
+ifdef BROKEN_NODES
+	echo '#SBATCH --exclude=${BROKEN_NODES}' >> $@
+endif
 	echo '${HPC_EXTRA}' >> $@
 	echo '${HPC_EXTRA1}' >> $@
 	echo '${HPC_EXTRA2}' >> $@
@@ -73,6 +79,9 @@ endif
 	echo '#SBATCH -N ${HPC_NODES}' >> $@
 	echo '#SBATCH -p ${HPC_QUEUE}' >> $@
 	echo '#SBATCH -t ${HPC_TIME}:00' >> $@
+ifdef BROKEN_NODES
+	echo '#SBATCH --exclude=${BROKEN_NODES}' >> $@
+endif
 	echo '${HPC_EXTRA}' >> $@
 	echo '${HPC_EXTRA1}' >> $@
 	echo '${HPC_EXTRA2}' >> $@
diff --git a/tatoeba/forward-translate/Makefile b/tatoeba/forward-translate/Makefile
index 3b572925..a9568491 100644
--- a/tatoeba/forward-translate/Makefile
+++ b/tatoeba/forward-translate/Makefile
@@ -159,12 +159,14 @@ endif
 ## score translations with reverse translation model
 ## normalize scores (see https://github.com/browsermt/students)
 
-SCOREFILES = $(patsubst %.${SRC}.gz,%.${SRC}.scores.gz,$(wildcard ${OUTPUT_DIR}/latest/*.${SRC}.gz))
+SCOREFILES    = $(patsubst %.${SRC}.gz,%.${SRC}.scores.gz,$(wildcard ${OUTPUT_DIR}/latest/*.${SRC}.gz))
+RAWSCOREFILES = $(patsubst %.${SRC}.gz,%.${SRC}.raw-scores.gz,$(wildcard ${OUTPUT_DIR}/latest/*.${SRC}.gz))
 
 .PHONY: score-translation score-translations
 score-translation: ${BITEXT_LATEST_SRC:.gz=.scores.gz}
 score-translations: ${SCOREFILES}
 sort-scored-translations: ${OUTPUT_DIR}/latest/Tatoeba-train.sorted.gz
+sort-raw-scored-translations: ${OUTPUT_DIR}/latest/Tatoeba-train.sorted-raw.gz
 
 print-score-file:
 	echo ${BITEXT_LATEST_SRC:.gz=.scores.gz}
@@ -197,13 +199,52 @@ ${OUTPUT_DIR}/latest/Tatoeba-train.sorted.gz: ${SCOREFILES}
 	rm -f $@.src.gz $@.trg.gz
 
 
+${OUTPUT_DIR}/latest/Tatoeba-train.sorted-raw.gz: ${RAWSCOREFILES}
+	${GZCAT} ${OUTPUT_DIR}/latest/*.${SRC}.raw-scores.gz | ${GZIP} -c > $@.raw-scores.gz
+	${GZCAT} ${OUTPUT_DIR}/latest/*.${SRC}.gz | ${GZIP} -c > $@.src.gz
+	${GZCAT} ${OUTPUT_DIR}/latest/*.${TRG}.gz | ${GZIP} -c > $@.trg.gz
+	paste <(gzip -cd $@.raw-scores.gz) <(gzip -cd $@.src.gz) <(gzip -cd $@.trg.gz) |\
+	LC_ALL=C sort -n -k1,1 -S 10G | uniq -f1 | ${GZIP} -c > $@
+	rm -f $@.src.gz $@.trg.gz
+
+
+# Part of the data to be removed (0.05 is 5%)
+# RETAIN - give a number in percent about how much to retain
+# REMOVE - 
 #
 # (see https://github.com/browsermt/students)
-#
-#scored/%.best.gz: scored/%.sorted.gz
-#	$(eval STARTLINE := $(shell pigz -dc $< | wc -l | sed "s|$$|*$(REMOVE)|" | bc | cut -f1 -d.))
-#	@echo Removing $(REMOVE) removes $(STARTLINE) lines
-#	pigz -dc $< | tail -n +$(STARTLINE) | cut -f2,3 | pigz > $@
+
+# REMOVE = 0.05
+# RETAIN = ${shell echo "100-100*${REMOVE}/1;" | bc}
+RETAIN = 95
+REMOVE = ${shell echo "scale=2; (100-${RETAIN})/100" | bc}
+
+extract-best-translations: ${OUTPUT_DIR}/latest/Tatoeba-train.${SRC}.best${RETAIN}.gz
+extract-rawbest-translations: ${OUTPUT_DIR}/latest/Tatoeba-train.${SRC}.rawbest${RETAIN}.gz
+
+%.${SRC}.best${RETAIN}.gz: %.sorted.gz
+	$(eval STARTLINE := $(shell ${GZIP} -dc $< | wc -l | sed "s|$$|*$(REMOVE)|" | bc | cut -f1 -d.))
+	@echo Removing $(REMOVE) removes $(STARTLINE) lines
+	${GZIP} -dc $< | tail -n +$(STARTLINE) | cut -f2,3 | \
+	tee >(cut -f1 | gzip -c >$@) |\
+	cut -f2 | gzip -c > ${@:.${SRC}.best${RETAIN}.gz=.${TRG}.best${RETAIN}.gz}
+
+%.${TRG}.best${RETAIN}.gz: %.${SRC}.best${RETAIN}.gz
+	@echo "done!"
+
+%.${SRC}.rawbest${RETAIN}.gz: %.sorted-raw.gz
+	$(eval STARTLINE := $(shell ${GZIP} -dc $< | wc -l | sed "s|$$|*$(REMOVE)|" | bc | cut -f1 -d.))
+	@echo Removing $(REMOVE) removes $(STARTLINE) lines
+	${GZIP} -dc $< | tail -n +$(STARTLINE) | cut -f2,3 | \
+	tee >(cut -f1 | gzip -c >$@) |\
+	cut -f2 | gzip -c > ${@:.${SRC}.rawbest${RETAIN}.gz=.${TRG}.rawbest${RETAIN}.gz}
+
+%.${TRG}.raawbest${RETAIN}.gz: %.${SRC}.rawbest${RETAIN}.gz
+	@echo "done!"
+
+
+
+