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@ -248,32 +248,6 @@ class Interformer(nn.Module):
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warmup=warmup,
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get_layer_output=True
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)
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assert torch.all(x_lens > 0)
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# Now for the decoder, i.e., the prediction network
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row_splits = y.shape.row_splits(1)
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y_lens = row_splits[1:] - row_splits[:-1]
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blank_id = self.decoder.blank_id
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sos_y = add_sos(y, sos_id=blank_id)
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# sos_y_padded: [B, S + 1], start with SOS.
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sos_y_padded = sos_y.pad(mode="constant", padding_value=blank_id)
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# decoder_out: [B, S + 1, decoder_dim]
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decoder_out = self.decoder(sos_y_padded)
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# Note: y does not start with SOS
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# y_padded : [B, S]
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y_padded = y.pad(mode="constant", padding_value=0)
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y_padded = y_padded.to(torch.int64)
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boundary = torch.zeros((x.size(0), 4), dtype=torch.int64, device=x.device)
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boundary[:, 2] = y_lens
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boundary[:, 3] = x_lens
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lm = self.simple_lm_proj(decoder_out)
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am = self.simple_am_proj(encoder_out)
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with torch.cuda.amp.autocast(enabled=False):
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simple_loss, (px_grad, py_grad) = k2.rnnt_loss_smoothed(
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