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Changes to schedules: _whitening_schedule longer, min_abs schedule on attention_squeeze+nonlin_attention shorter; dip in conv_skip_rate.

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Daniel Povey 2022-12-16 14:58:15 +08:00
parent 864ff96322
commit 3213c18a22
1 changed files with 4 additions and 4 deletions
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8
egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
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@ -355,7 +355,7 @@ class Zipformer(EncoderInterface):
def _whitening_schedule(x: float, ratio: float = 2.0) -> ScheduledFloat:
return ScheduledFloat((0.0, x),
(12000.0, ratio * x),
(20000.0, ratio * x),
default=x)
def _aux_grad_scale() -> float:
@ -399,7 +399,7 @@ class ZipformerEncoderLayer(nn.Module):
# to work correctly.
layer_skip_rate: FloatLike = ScheduledFloat((0.0, 0.5), (4000.0, 0.05), default=0),
attention_skip_rate: FloatLike = ScheduledFloat((0.0, 0.2), (4000.0, 0.0), default=0),
conv_skip_rate: FloatLike = ScheduledFloat((0.0, 0.2), (16000, 0.0), default=0),
conv_skip_rate: FloatLike = ScheduledFloat((0.0, 0.2), (4000.0, 0.05), (16000, 0.0), default=0),
const_attention_rate: FloatLike = ScheduledFloat((0.0, 0.25), (4000.0, 0.025), default=0),
bypass_min: FloatLike = ScheduledFloat((0.0, 0.75), (20000.0, 0.2), default=0),
bypass_max: FloatLike = 1.0,
@ -1408,7 +1408,7 @@ class AttentionSqueeze(nn.Module):
self.out_balancer = ActivationBalancer(
embed_dim, channel_dim=-1,
min_positive=0.3, max_positive=0.7,
min_abs=ScheduledFloat((0.0, 0.001), (8000.0, 0.005)),
min_abs=ScheduledFloat((0.0, 0.001), (4000.0, 0.005)),
)
@ -1543,7 +1543,7 @@ class NonlinAttentionModule(nn.Module):
self.balancer2 = ActivationBalancer(
channels, channel_dim=-1,
min_positive=0.3, max_positive=0.7,
min_abs=ScheduledFloat((0.0, 0.001), (8000.0, 0.005)),
min_abs=ScheduledFloat((0.0, 0.001), (4000.0, 0.005)),
)