run_sgmm2.sh
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#!/bin/bash
# This script is invoked from ../run.sh
# It contains some SGMM-related scripts that I am breaking out of the main run.sh for clarity.
. ./cmd.sh
# Note: you might want to try to give the option --spk-dep-weights=false to train_sgmm2.sh;
# this takes out the "symmetric SGMM" part which is not always helpful.
# SGMM system on si84 data [sgmm5a]. Note: the system we aligned from used the si284 data for
# training, but this shouldn't have much effect.
(
steps/align_fmllr.sh --nj 30 --cmd "$train_cmd" \
data/train_si84 data/lang exp/tri4b exp/tri4b_ali_si84 || exit 1;
steps/train_ubm.sh --cmd "$train_cmd" \
400 data/train_si84 data/lang exp/tri4b_ali_si84 exp/ubm5a || exit 1;
steps/train_sgmm2.sh --cmd "$train_cmd" \
7000 9000 data/train_si84 data/lang exp/tri4b_ali_si84 \
exp/ubm5a/final.ubm exp/sgmm2_5a || exit 1;
(
utils/mkgraph.sh data/lang_test_tgpr exp/sgmm2_5a exp/sgmm2_5a/graph_tgpr
steps/decode_sgmm2.sh --nj 10 --cmd "$decode_cmd" --transform-dir exp/tri4b/decode_tgpr_dev93 \
exp/sgmm2_5a/graph_tgpr data/test_dev93 exp/sgmm2_5a/decode_tgpr_dev93
) &
steps/align_sgmm2.sh --nj 30 --cmd "$train_cmd" --transform-dir exp/tri4b_ali_si84 \
--use-graphs true --use-gselect true data/train_si84 data/lang exp/sgmm2_5a exp/sgmm2_5a_ali_si84 || exit 1;
steps/make_denlats_sgmm2.sh --nj 30 --sub-split 30 --cmd "$decode_cmd" --transform-dir exp/tri4b_ali_si84 \
data/train_si84 data/lang exp/sgmm2_5a_ali_si84 exp/sgmm2_5a_denlats_si84
steps/train_mmi_sgmm2.sh --cmd "$decode_cmd" --transform-dir exp/tri4b_ali_si84 --boost 0.1 \
data/train_si84 data/lang exp/sgmm2_5a_ali_si84 exp/sgmm2_5a_denlats_si84 exp/sgmm2_5a_mmi_b0.1
for iter in 1 2 3 4; do
steps/decode_sgmm2_rescore.sh --cmd "$decode_cmd" --iter $iter \
--transform-dir exp/tri4b/decode_tgpr_dev93 data/lang_test_tgpr data/test_dev93 exp/sgmm2_5a/decode_tgpr_dev93 \
exp/sgmm2_5a_mmi_b0.1/decode_tgpr_dev93_it$iter &
done
steps/train_mmi_sgmm2.sh --cmd "$decode_cmd" --transform-dir exp/tri4b_ali_si84 --boost 0.1 \
--update-opts "--cov-min-value=0.9" data/train_si84 data/lang exp/sgmm2_5a_ali_si84 exp/sgmm2_5a_denlats_si84 exp/sgmm2_5a_mmi_b0.1_m0.9
for iter in 1 2 3 4; do
steps/decode_sgmm2_rescore.sh --cmd "$decode_cmd" --iter $iter \
--transform-dir exp/tri4b/decode_tgpr_dev93 data/lang_test_tgpr data/test_dev93 exp/sgmm2_5a/decode_tgpr_dev93 \
exp/sgmm2_5a_mmi_b0.1_m0.9/decode_tgpr_dev93_it$iter &
done
) &
(
# The next commands are the same thing on all the si284 data.
# SGMM system on the si284 data [sgmm5b]
steps/train_ubm.sh --cmd "$train_cmd" \
600 data/train_si284 data/lang exp/tri4b_ali_si284 exp/ubm5b || exit 1;
steps/train_sgmm2.sh --cmd "$train_cmd" \
11000 25000 data/train_si284 data/lang exp/tri4b_ali_si284 \
exp/ubm5b/final.ubm exp/sgmm2_5b || exit 1;
(
utils/mkgraph.sh data/lang_test_tgpr exp/sgmm2_5b exp/sgmm2_5b/graph_tgpr
steps/decode_sgmm2.sh --nj 10 --cmd "$decode_cmd" --transform-dir exp/tri4b/decode_tgpr_dev93 \
exp/sgmm2_5b/graph_tgpr data/test_dev93 exp/sgmm2_5b/decode_tgpr_dev93
steps/decode_sgmm2.sh --nj 8 --cmd "$decode_cmd" --transform-dir exp/tri4b/decode_tgpr_eval92 \
exp/sgmm2_5b/graph_tgpr data/test_eval92 exp/sgmm2_5b/decode_tgpr_eval92
utils/mkgraph.sh data/lang_test_bd_tgpr exp/sgmm2_5b exp/sgmm2_5b/graph_bd_tgpr || exit 1;
steps/decode_sgmm2.sh --nj 10 --cmd "$decode_cmd" --transform-dir exp/tri4b/decode_bd_tgpr_dev93 \
exp/sgmm2_5b/graph_bd_tgpr data/test_dev93 exp/sgmm2_5b/decode_bd_tgpr_dev93
steps/decode_sgmm2.sh --nj 8 --cmd "$decode_cmd" --transform-dir exp/tri4b/decode_bd_tgpr_eval92 \
exp/sgmm2_5b/graph_bd_tgpr data/test_eval92 exp/sgmm2_5b/decode_bd_tgpr_eval92
) &
# This shows how you would build and test a quinphone SGMM2 system, but
(
steps/train_sgmm2.sh --cmd "$train_cmd" \
--context-opts "--context-width=5 --central-position=2" \
11000 25000 data/train_si284 data/lang exp/tri4b_ali_si284 \
exp/ubm5b/final.ubm exp/sgmm2_5c || exit 1;
# Decode from lattices in exp/sgmm2_5b
steps/decode_sgmm2_fromlats.sh --cmd "$decode_cmd" --transform-dir exp/tri4b/decode_tgpr_dev93 \
data/test_dev93 data/lang_test_tgpr exp/sgmm2_5b/decode_tgpr_dev93 exp/sgmm2_5c/decode_tgpr_dev93
steps/decode_sgmm2_fromlats.sh --cmd "$decode_cmd" --transform-dir exp/tri4b/decode_tgpr_eval92 \
data/test_eval92 data/lang_test_tgpr exp/sgmm2_5b/decode_tgpr_eval92 exp/sgmm2_5c/decode_tgpr_eval92
) &
steps/align_sgmm2.sh --nj 30 --cmd "$train_cmd" --transform-dir exp/tri4b_ali_si284 \
--use-graphs true --use-gselect true data/train_si284 data/lang exp/sgmm2_5b exp/sgmm2_5b_ali_si284
steps/make_denlats_sgmm2.sh --nj 30 --sub-split 30 --cmd "$decode_cmd" --transform-dir exp/tri4b_ali_si284 \
data/train_si284 data/lang exp/sgmm2_5b_ali_si284 exp/sgmm2_5b_denlats_si284
steps/train_mmi_sgmm2.sh --cmd "$decode_cmd" --transform-dir exp/tri4b_ali_si284 --boost 0.1 \
data/train_si284 data/lang exp/sgmm2_5b_ali_si284 exp/sgmm2_5b_denlats_si284 exp/sgmm2_5b_mmi_b0.1
for iter in 1 2 3 4; do
for test in eval92; do # dev93
steps/decode_sgmm2_rescore.sh --cmd "$decode_cmd" --iter $iter \
--transform-dir exp/tri4b/decode_bd_tgpr_${test} data/lang_test_bd_fg data/test_${test} exp/sgmm2_5b/decode_bd_tgpr_${test} \
exp/sgmm2_5b_mmi_b0.1/decode_bd_tgpr_${test}_it$iter &
done
done
steps/train_mmi_sgmm2.sh --cmd "$decode_cmd" --transform-dir exp/tri4b_ali_si284 --boost 0.1 \
--drop-frames true data/train_si284 data/lang exp/sgmm2_5b_ali_si284 exp/sgmm2_5b_denlats_si284 exp/sgmm2_5b_mmi_b0.1_z
for iter in 1 2 3 4; do
for test in eval92 dev93; do
steps/decode_sgmm2_rescore.sh --cmd "$decode_cmd" --iter $iter \
--transform-dir exp/tri4b/decode_bd_tgpr_${test} data/lang_test_bd_fg data/test_${test} exp/sgmm2_5b/decode_bd_tgpr_${test} \
exp/sgmm2_5b_mmi_b0.1_z/decode_bd_tgpr_${test}_it$iter &
done
done
) &
wait
# Examples of combining some of the best decodings: SGMM+MMI with
# MMI+fMMI on a conventional system.
local/score_combine.sh data/test_eval92 \
data/lang_test_bd_tgpr \
exp/tri4b_fmmi_a/decode_tgpr_eval92_it8 \
exp/sgmm2_5b_mmi_b0.1/decode_bd_tgpr_eval92_it3 \
exp/combine_tri4b_fmmi_a_sgmm2_5b_mmi_b0.1/decode_bd_tgpr_eval92_it8_3
# %WER 4.43 [ 250 / 5643, 41 ins, 12 del, 197 sub ] exp/tri4b_fmmi_a/decode_tgpr_eval92_it8/wer_11
# %WER 3.85 [ 217 / 5643, 35 ins, 11 del, 171 sub ] exp/sgmm2_5b_mmi_b0.1/decode_bd_tgpr_eval92_it3/wer_10
# combined to:
# %WER 3.76 [ 212 / 5643, 32 ins, 12 del, 168 sub ] exp/combine_tri4b_fmmi_a_sgmm2_5b_mmi_b0.1/decode_bd_tgpr_eval92_it8_3/wer_12
# Checking MBR decode of baseline:
rm -r exp/sgmm2_5b_mmi_b0.1/decode_bd_tgpr_eval92_it3.mbr 2>/dev/null
cp -r exp/sgmm2_5b_mmi_b0.1/decode_bd_tgpr_eval92_it3{,.mbr}
local/score_mbr.sh data/test_eval92 data/lang_test_bd_tgpr exp/sgmm2_5b_mmi_b0.1/decode_bd_tgpr_eval92_it3.mbr
# MBR decoding did not seem to help (baseline was 3.85). I think this is normal at such low WERs.
%WER 3.86 [ 218 / 5643, 35 ins, 11 del, 172 sub ] exp/sgmm2_5b_mmi_b0.1/decode_bd_tgpr_eval92_it3.mbr/wer_10