From 99595b68a10ae913b72da10283594c1bf8bce3e2 Mon Sep 17 00:00:00 2001
From: chenlong <chenlong@csdn.net>
Date: Thu, 23 Mar 2023 14:00:13 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9sft?=
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---
 README.md      |  4 ++--
 src/dataset.py | 16 ++++++++++++----
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 5456dcc..5984db4 100644
--- a/README.md
+++ b/README.md
@@ -49,9 +49,9 @@ python train.py  --load_model "rwkv-80.pth" --wandb "" --proj_dir "out" \
 使用指令数据集进行监督训练，精调语言模型，指令数据集格式为句子对。这部分数据需要由开发人员来进行编写，有的语料需要涉及到推理过程。
 
 ```
-python train_sft.py  --load_model "rwkv-190.pth" --wandb "" --proj_dir "out_sft" \
+python train_sft.py  --load_model "rwkv-500.pth" --wandb "" --proj_dir "out_sft" \
 --data_file "data/prompts.csv" --data_type "utf-8" --vocab_size 50277 \
---ctx_len 2048 --epoch_steps 200 --epoch_count 1000 --epoch_begin 0 --epoch_save 2 \
+--ctx_len 2048 --epoch_steps 200 --epoch_count 1000 --epoch_begin 0 --epoch_save 5 \
 --micro_bsz 8 --n_layer 24 --n_embd 2048 --pre_ffn 0 --head_qk 0 \
 --lr_init 1e-5 --lr_final 1e-5 --warmup_steps 0 --beta1 0.9 --beta2 0.999 --adam_eps 1e-8 \
 --accelerator gpu --devices 1 --precision bf16 --strategy deepspeed_stage_2_offload --grad_cp 1 \
diff --git a/src/dataset.py b/src/dataset.py
index c492408..be66b9f 100644
--- a/src/dataset.py
+++ b/src/dataset.py
@@ -233,12 +233,17 @@ class S2SDataset(Dataset):
         ]  # [vocab, vocab] for Pile model
 
         self.tokenizer = TOKENIZER(WORD_NAME)
+
+        self.prompt_q = self.tokenizer.tokenizer.encode("Q:")
+        self.prompt_a = self.tokenizer.tokenizer.encode("A:")
+        self.prompt_sep = self.tokenizer.tokenizer.encode("\n\n")
+
         pf = pd.read_csv(args.data_file)
         data_list = []
         for index, row in pf.iterrows():
             question = row["question"]
             answer = row["answer"]
-            data_list.append((self.tokenizer.tokenizer.encode(question), self.tokenizer.tokenizer.encode("\n"),
+            data_list.append((self.tokenizer.tokenizer.encode(question),
                               self.tokenizer.tokenizer.encode(answer)))
         self.data = data_list
 
@@ -248,15 +253,18 @@ class S2SDataset(Dataset):
     def __getitem__(self, index):
         ctx_len = self.args.ctx_len
         req_len = ctx_len + 1
-        question, sep, answer = self.data[index]
-        text = question + sep + answer
+        question, answer = self.data[index]
+        question = self.prompt_q + question
+        answer = self.prompt_a + answer
+        text = question + self.prompt_sep + answer
         text = text[:req_len]
 
         text = text + [0] * (req_len - len(text))
         x = torch.tensor(text[:-1], dtype=torch.long)
         y = torch.tensor(text[1:], dtype=torch.long)
 
-        z = [0] * len(question) + [1] * (ctx_len - len(question))
+        q_len = len(question) + len(self.prompt_a) + len(self.prompt_sep)
+        z = [0] * q_len + [1] * (ctx_len - q_len)
         z = torch.tensor(z, dtype=torch.long)
 
         return x, y, z
-- 
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