Add cr-ctc training for gigispeech

egs/gigaspeech/ASR/zipformer/attention_decoder.py

@@ -0,0 +1 @@
+../../../librispeech/ASR/zipformer/attention_decoder.py

egs/gigaspeech/ASR/zipformer/ctc_decode.py

@@ -88,6 +88,8 @@ import sentencepiece as spm
 import torch
 import torch.nn as nn
 from asr_datamodule import GigaSpeechAsrDataModule
+
+from gigaspeech_scoring import asr_text_post_processing
 from train import add_model_arguments, get_model, get_params
 
 from icefall.checkpoint import (
@@ -274,6 +276,17 @@ def get_decoding_params() -> AttributeDict:
     return params
 
 
+def post_processing(
+    results: List[Tuple[str, List[str], List[str]]],
+) -> List[Tuple[str, List[str], List[str]]]:
+    new_results = []
+    for key, ref, hyp in results:
+        new_ref = asr_text_post_processing(" ".join(ref)).split()
+        new_hyp = asr_text_post_processing(" ".join(hyp)).split()
+        new_results.append((key, new_ref, new_hyp))
+    return new_results
+
+
 def decode_one_batch(
     params: AttributeDict,
     model: nn.Module,
@@ -567,6 +580,7 @@ def save_results(
     test_set_wers = dict()
     for key, results in results_dict.items():
         recog_path = params.res_dir / f"recogs-{test_set_name}-{params.suffix}.txt"
+        results = post_processing(results)
         results = sorted(results)
         store_transcripts(filename=recog_path, texts=results)
         logging.info(f"The transcripts are stored in {recog_path}")
@@ -813,14 +827,12 @@ def main():
     args.return_cuts = True
     gigaspeech = GigaSpeechAsrDataModule(args)
 
-    test_clean_cuts = gigaspeech.test_clean_cuts()
-    test_other_cuts = gigaspeech.test_other_cuts()
+    test_cuts = gigaspeech.test_cuts()
 
-    test_clean_dl = gigaspeech.test_dataloaders(test_clean_cuts)
-    test_other_dl = gigaspeech.test_dataloaders(test_other_cuts)
+    test_dl = gigaspeech.test_dataloaders(test_cuts)
 
-    test_sets = ["test-clean", "test-other"]
-    test_dl = [test_clean_dl, test_other_dl]
+    test_sets = ["test"]
+    test_dl = [test_dl]
 
     for test_set, test_dl in zip(test_sets, test_dl):
         results_dict = decode_dataset(

egs/gigaspeech/ASR/zipformer/label_smoothing.py

@@ -0,0 +1 @@
+../../../librispeech/ASR/zipformer/label_smoothing.py

egs/gigaspeech/ASR/zipformer/spec_augment.py

@@ -0,0 +1 @@
+../../../librispeech/ASR/zipformer/spec_augment.py

egs/librispeech/ASR/zipformer/attention_decoder.py

@@ -17,6 +17,7 @@
 
 
 import math
+import warnings
 from typing import List, Optional
 
 import k2
@@ -234,9 +235,12 @@ class TransformerDecoder(nn.Module):
         # construct attn_mask for self-attn modules
         padding_mask = make_pad_mask(x_lens)  # (batch, tgt_len)
         causal_mask = subsequent_mask(x.shape[0], device=x.device)  # (seq_len, seq_len)
+
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore")
             attn_mask = torch.logical_or(
                 padding_mask.unsqueeze(1),  # (batch, 1, seq_len)
-            torch.logical_not(causal_mask).unsqueeze(0)  # (1, seq_len, seq_len)
+                torch.logical_not(causal_mask).unsqueeze(0),  # (1, seq_len, seq_len)
             )  # (batch, seq_len, seq_len)
 
         if memory is not None:
@@ -367,7 +371,9 @@ class MultiHeadAttention(nn.Module):
         self.num_heads = num_heads
         self.head_dim = attention_dim // num_heads
         assert self.head_dim * num_heads == attention_dim, (
-            self.head_dim, num_heads, attention_dim
+            self.head_dim,
+            num_heads,
+            attention_dim,
         )
         self.dropout = dropout
         self.name = None  # will be overwritten in training code; for diagnostics.
@@ -437,15 +443,19 @@ class MultiHeadAttention(nn.Module):
         if key_padding_mask is not None:
             assert key_padding_mask.shape == (batch, src_len), key_padding_mask.shape
             attn_weights = attn_weights.masked_fill(
-                key_padding_mask.unsqueeze(1).unsqueeze(2), float("-inf"),
+                key_padding_mask.unsqueeze(1).unsqueeze(2),
+                float("-inf"),
             )
 
         if attn_mask is not None:
-            assert (
-                attn_mask.shape == (batch, 1, src_len)
-                or attn_mask.shape == (batch, tgt_len, src_len)
+            assert attn_mask.shape == (batch, 1, src_len) or attn_mask.shape == (
+                batch,
+                tgt_len,
+                src_len,
             ), attn_mask.shape
-            attn_weights = attn_weights.masked_fill(attn_mask.unsqueeze(1), float("-inf"))
+            attn_weights = attn_weights.masked_fill(
+                attn_mask.unsqueeze(1), float("-inf")
+            )
 
         attn_weights = attn_weights.view(batch * num_heads, tgt_len, src_len)
         attn_weights = nn.functional.softmax(attn_weights, dim=-1)
@@ -456,7 +466,11 @@ class MultiHeadAttention(nn.Module):
 
         # (batch * head, tgt_len, head_dim)
         attn_output = torch.bmm(attn_weights, v)
-        assert attn_output.shape == (batch * num_heads, tgt_len, head_dim), attn_output.shape
+        assert attn_output.shape == (
+            batch * num_heads,
+            tgt_len,
+            head_dim,
+        ), attn_output.shape
 
         attn_output = attn_output.transpose(0, 1).contiguous()
         attn_output = attn_output.view(tgt_len, batch, num_heads * head_dim)

egs/librispeech/ASR/zipformer/train.py

@@ -747,7 +747,7 @@ def get_model(params: AttributeDict) -> nn.Module:
 
 
 def get_spec_augment(params: AttributeDict) -> SpecAugment:
-    num_frame_masks = 10 * params.time_mask_ratio
+    num_frame_masks = int(10 * params.time_mask_ratio)
     max_frames_mask_fraction = 0.15 * params.time_mask_ratio
     logging.info(
         f"num_frame_masks: {num_frame_masks}, "