1 files changed, 43 insertions, 0 deletions
diff --git a/tests/training/features/lr-decay/test_lr_decay_stalled.sh b/tests/training/features/lr-decay/test_lr_decay_stalled.sh
new file mode 100644
index 0000000..6f9abd7
--- /dev/null
+++ b/tests/training/features/lr-decay/test_lr_decay_stalled.sh
@@ -0,0 +1,43 @@
+#!/bin/bash -x
+
+#####################################################################
+# SUMMARY: Test learning rate decaying after stalled validation
+# AUTHOR: snukky
+# TAGS: valid valid-script lr-decay
+#####################################################################
+
+# Exit on error
+set -e
+
+# Test code goes here
+rm -rf lrdecay_stalled lrdecay_stalled.log valid_script.temp
+mkdir -p lrdecay_stalled
+
+# Start training with a fully trained model so that validation metrics do not improve easily
+cp $MRT_MODELS/wngt19/model.small.npz lrdecay_stalled/model.npz
+
+test -s devset.en || head -n 50 $MRT_MODELS/wngt19/newstest2014.en | sed -r 's/@@ //g' > devset.en
+test -s devset.de || head -n 50 $MRT_MODELS/wngt19/newstest2014.de | sed -r 's/@@ //g' > devset.de
+
+# Training sides are intentionaly reversed to test early stopping
+$MRT_MARIAN/marian \
+    --seed 2222 --no-shuffle --clip-norm 1 --maxi-batch 1 --mini-batch 32 -w 2500 \
+    -m lrdecay_stalled/model.npz -t $MRT_DATA/europarl.de-en/corpus.small.{de,en}.gz \
+    -v $MRT_MODELS/wngt19/en-de.{spm,spm} \
+    --disp-freq 5 --valid-freq 10 --after-batches 200 \
+    --valid-metrics valid-script ce-mean-words \
+    --valid-script-path ./valid_script.sh \
+    --valid-sets devset.{en,de} \
+    --log lrdecay_stalled.log \
+    --lr-decay 0.9 --lr-decay-start 1 --lr-decay-strategy stalled \
+    --early-stopping 4
+
+test -e lrdecay_stalled/model.npz
+test -e lrdecay_stalled/model.npz.yml
+test -e lrdecay_stalled.log
+
+$MRT_TOOLS/strip-timestamps.sh < lrdecay_stalled.log | grep -P '(\[valid\]|Decaying)' > lrdecay_stalled.out
+$MRT_TOOLS/diff-nums.py lrdecay_stalled.out lrdecay_stalled.expected -p 0.2 -o lrdecay_stalled.diff
+
+# Exit with success code
+exit 0