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-rw-r--r--training/strategy/ti.py23
1 files changed, 0 insertions, 23 deletions
diff --git a/training/strategy/ti.py b/training/strategy/ti.py
index c7520ed..16baa34 100644
--- a/training/strategy/ti.py
+++ b/training/strategy/ti.py
@@ -31,10 +31,6 @@ def textual_inversion_strategy_callbacks(
31 seed: int, 31 seed: int,
32 placeholder_tokens: list[str], 32 placeholder_tokens: list[str],
33 placeholder_token_ids: list[list[int]], 33 placeholder_token_ids: list[list[int]],
34 gradient_checkpointing: bool = False,
35 use_emb_decay: bool = False,
36 emb_decay_target: float = 0.4,
37 emb_decay: float = 1e-2,
38 use_ema: bool = False, 34 use_ema: bool = False,
39 ema_inv_gamma: float = 1.0, 35 ema_inv_gamma: float = 1.0,
40 ema_power: int = 1, 36 ema_power: int = 1,
@@ -106,28 +102,10 @@ def textual_inversion_strategy_callbacks(
106 yield 102 yield
107 103
108 @torch.no_grad() 104 @torch.no_grad()
109 def on_before_optimize(lr: float, epoch: int):
110 if use_emb_decay:
111 w = text_encoder.text_model.embeddings.temp_token_embedding.weight
112 return torch.all(w.grad == 0, dim=1)
113
114 @torch.no_grad()
115 def on_after_optimize(zero_ids, lr: float): 105 def on_after_optimize(zero_ids, lr: float):
116 if ema_embeddings is not None: 106 if ema_embeddings is not None:
117 ema_embeddings.step(text_encoder.text_model.embeddings.temp_token_embedding.parameters()) 107 ema_embeddings.step(text_encoder.text_model.embeddings.temp_token_embedding.parameters())
118 108
119 if use_emb_decay:
120 lambda_ = emb_decay * lr
121
122 if lambda_ != 0:
123 w = text_encoder.text_model.embeddings.temp_token_embedding.weight
124
125 mask = torch.ones(w.shape[0], dtype=torch.bool)
126 mask[zero_ids] = False
127
128 norm = w[mask, :].norm(dim=-1, keepdim=True)
129 w[mask].add_((w[mask] / norm.clamp_min(1e-12)) * lambda_ * (emb_decay_target - norm))
130
131 def on_log(): 109 def on_log():
132 if ema_embeddings is not None: 110 if ema_embeddings is not None:
133 return {"ema_decay": ema_embeddings.decay} 111 return {"ema_decay": ema_embeddings.decay}
@@ -171,7 +149,6 @@ def textual_inversion_strategy_callbacks(
171 on_accum_model=on_accum_model, 149 on_accum_model=on_accum_model,
172 on_train=on_train, 150 on_train=on_train,
173 on_eval=on_eval, 151 on_eval=on_eval,
174 on_before_optimize=on_before_optimize,
175 on_after_optimize=on_after_optimize, 152 on_after_optimize=on_after_optimize,
176 on_log=on_log, 153 on_log=on_log,
177 on_checkpoint=on_checkpoint, 154 on_checkpoint=on_checkpoint,