fix share all embedding and share decoder embedding with the softmax bugs

convert_model.sh

@@ -7,7 +7,7 @@ set -e
 # more device will not be used. e.g. you set device=(0 1 2 3), but you only choose three evalset, the gpu=3 will not be used
 device=(0 1 2 3 4 5 6 7)
 # your tag, must set!
-tag=baseline
+tag=base25_shared
 # you should select model params for choosing the correct num heads
 params=transformer_base
 model_dir=t2tmodel/$tag/ensemble15

scripts/convert_t2t_to_fairseq.py

@@ -139,8 +139,7 @@ def load_param():
 
   # source embedding, shape is src_vocab * emb_size
   if share_all_embedding:
-    src_emb_tensor = _get_tensor('symbol_modality_{}_{}/shared/weights'.format(src_vocab_size, emb_size),
-                                 shard=shard)
+    src_emb_tensor = _get_tensor('symbol_modality_{}_{}/shared/weights'.format(src_vocab_size, emb_size), shard=shard)
   else:
     src_emb_tensor = _get_tensor('symbol_modality_{}_{}/input_emb/weights'.format(src_vocab_size, emb_size), shard=shard)
   param_dict['src_emb'] = src_emb_tensor
@@ -241,7 +240,6 @@ def load_param():
   # step 8. dense transformer weight matrix
   if use_dense:
     layer_weight = _get_tensor('body/encoder/layer_history/layer_weight')
-    print(type(layer_weight))
     param_dict['enc_layer_weight'] = layer_weight
 
   # decoder
@@ -552,12 +550,14 @@ def convert_param():
   model['decoder.embed_tokens.weight'] = torch.cat([lua_row, pad_row, eos_row, unk_row, embed[4:, :]], dim=0)
   """
   lua_row = torch.zeros(1, embed.size(1))
-  model['decoder.embed_tokens.weight'] = torch.cat([lua_row, embed], dim=0)
+  if not share_all_embedding:
+    model['decoder.embed_tokens.weight'] = torch.cat([lua_row, embed], dim=0)
 
   # model['decoder.embed_positions._float_tensor'] = torch.Tensor([])
   # in fairseq, pos-index is from 2
   pos_emb = _get_param_numpy("tgt_pos_emb", sess)
   pos_emb = torch.cat([torch.zeros(2, pos_emb.size(1)), pos_emb[:-2, :]], dim=0)
+
   model['decoder.embed_positions.weight'] = pos_emb
   for layer_id in range(int(tgt_layer_num)):
     p1 = 'decoder.layers.%d.self_attn' % layer_id
@@ -624,7 +624,8 @@ def convert_param():
   """
   # lua_row = torch.zeros(1, softmax_w_tensor.size(1)).fill_(float('-inf'))
   lua_row = torch.zeros(1, softmax_w_tensor.size(1))
-  model['decoder.embed_out'] = torch.cat([lua_row, softmax_w_tensor], dim=0)
+  if share_all_embedding == False and share_decoder_input_and_softmax == False:
+    model['decoder.embed_out'] = torch.cat([lua_row, softmax_w_tensor], dim=0)
   return model
 
 def write_vocab():