complete interface for downstream task

my_data_collator.py

@@ -1,15 +1,6 @@
 from dataclasses import dataclass
-from typing import (
-    TYPE_CHECKING,
-    Any,
-    Dict,
-    List,
-    NamedTuple,
-    Optional,
-    Sequence,
-    Tuple,
-    Union,
-)
+from typing import (TYPE_CHECKING, Any, Dict, List, NamedTuple, Optional,
+                    Sequence, Tuple, Union)
 
 import numpy as np
 import tokenizers
@@ -27,6 +18,8 @@ class MyDataCollatorForPreTraining:
     pad_to_multiple_of: Optional[int] = None
 
     def __post_init__(self):
+        # print(self.mlm, self.tokenzier.token_to_id("[MASK]"))
+        # input()
         if self.mlm and self.tokenizer.token_to_id("[MASK]") is None:
             raise ValueError(
                 "This tokenizer does not have a mask token which is necessary for masked language modeling. "
@@ -36,6 +29,7 @@ class MyDataCollatorForPreTraining:
     def __call__(
         self, examples: List[Union[List[int], torch.Tensor, Dict[str, torch.Tensor]]],
     ) -> Dict[str, torch.Tensor]:
+        # print(examples)
         # Handle dict or lists with proper padding and conversion to tensor.
         if isinstance(examples[0], (dict, BatchEncoding)):
             batch = pad(
@@ -56,6 +50,9 @@ class MyDataCollatorForPreTraining:
             batch["input_ids"], batch["labels"] = self.mask_tokens(
                 batch["input_ids"], special_tokens_mask=special_tokens_mask
             )
+        else:
+            batch["input_ids"] = torch.squeeze(batch["input_ids"], dim=0)
+            batch["token_type_ids"] = torch.squeeze(batch["token_type_ids"], dim=0)
         return batch
 
     def mask_tokens(

my_run_mlm_no_trainer.py

@@ -187,8 +187,7 @@ def main():
     #     field="data",
     # )
     train_files = [
-        os.path.join(CURRENT_DATA_BASE, "inst.1.{}.json".format(i))
-        for i in range(0, 128, 2)
+        os.path.join(CURRENT_DATA_BASE, "inst.all.{}.json".format(i)) for i in range(2)
     ]
     valid_file = "/home/ming/malware/inst2vec_bert/data/test_lm/inst.json"
     raw_datasets = load_dataset(
@@ -199,7 +198,7 @@ def main():
 
     # we use the tokenizer previously trained on the dataset above
     tokenizer = tokenizers.Tokenizer.from_file(
-        os.path.join(CURRENT_DATA_BASE, "tokenizer-inst.1.json")
+        os.path.join(CURRENT_DATA_BASE, "tokenizer-inst.all.json")
     )
 
     # NOTE: have to promise the `length` here is consistent with the one used in `train_my_tokenizer.py`
@@ -254,6 +253,7 @@ def main():
         batched=True,
         num_proc=args.preprocessing_num_workers,
         remove_columns=column_names,
+        load_from_cache_file=False,
     )
 
     train_dataset = tokenized_datasets["train"]

obtain_inst_vec.py

@@ -0,0 +1,128 @@
+import argparse
+import logging
+import math
+import os
+import random
+
+import datasets
+import numpy as np
+import tokenizers
+import torch
+import transformers
+from accelerate import Accelerator
+from datasets import load_dataset
+from torch.nn import DataParallel
+from torch.utils.data.dataloader import DataLoader
+from tqdm.auto import tqdm
+from transformers import (
+    CONFIG_MAPPING,
+    MODEL_MAPPING,
+    AdamW,
+    AutoConfig,
+    AutoModelForMaskedLM,
+    AutoTokenizer,
+    BatchEncoding,
+    BertConfig,
+    BertForPreTraining,
+    DataCollatorForLanguageModeling,
+    SchedulerType,
+    get_scheduler,
+    set_seed,
+)
+
+from my_data_collator import MyDataCollatorForPreTraining
+from process_data.utils import CURRENT_DATA_BASE
+
+model_file = os.path.join(CURRENT_DATA_BASE, "bert-L2-H8.bin")
+config_file = os.path.join(CURRENT_DATA_BASE, "bert-L2-H8.config.json")
+tokenizer_file = os.path.join(CURRENT_DATA_BASE, "tokenizer-inst.all.json")
+
+
+def load_model():
+    config = BertConfig.from_json_file(config_file)
+    model = BertForPreTraining(config)
+    state_dict = torch.load(model_file)
+    model.load_state_dict(state_dict)
+    model.eval()
+    print("Load model successfully !")
+
+    tokenizer = tokenizers.Tokenizer.from_file(tokenizer_file)
+    tokenizer.enable_padding(
+        pad_id=tokenizer.token_to_id("[PAD]"), pad_token="[PAD]", length=32
+    )
+    print("Load tokenizer successfully !")
+    return model, tokenizer
+
+
+def process_input(inst, tokenizer):
+    encoded_input = {}
+    if isinstance(inst, str):
+        # make a batch by myself
+        inst = [inst for _ in range(8)]
+    results = tokenizer.encode_batch(inst)
+    encoded_input["input_ids"] = [result.ids for result in results]
+    encoded_input["token_type_ids"] = [result.type_ids for result in results]
+    encoded_input["special_tokens_mask"] = [
+        result.special_tokens_mask for result in results
+    ]
+
+    # print(encoded_input["input_ids"])
+
+    # use `np` rather than `pt` in case of reporting of error
+    batch_output = BatchEncoding(
+        encoded_input, tensor_type="np", prepend_batch_axis=False,
+    )
+
+    # print(batch_output["input_ids"])
+
+    # NOTE: utilize the "special_tokens_mask",
+    # only work if the input consists of single instruction
+    length_mask = 1 - batch_output["special_tokens_mask"]
+
+    data_collator = MyDataCollatorForPreTraining(tokenizer=tokenizer, mlm=False)
+
+    model_input = data_collator([batch_output])
+
+    # print(model_input["input_ids"])
+
+    return model_input, length_mask
+
+
+def generate_inst_vec(inst, method="mean"):
+    model, tokenizer = load_model()
+
+    model_input, length_mask = process_input(inst, tokenizer)
+    length_mask = torch.from_numpy(length_mask).to(model_input["input_ids"].device)
+
+    output = model(**model_input, output_hidden_states=True)
+
+    if method == "cls":
+        if isinstance(inst, str):
+            return output.hidden_states[-1][0][0]
+        elif isinstance(inst, list):
+            return output.hidden_states[-1, :, 0, :]
+    elif method == "mean":
+        result = output.hidden_states[-1] * torch.unsqueeze(length_mask, dim=-1)
+        # print(result.shape)
+        if isinstance(inst, str):
+            result = torch.mean(result[0], dim=0)
+        elif isinstance(inst, list):
+            result = torch.mean(result, dim=1)
+        return result
+    elif method == "max":
+        result = output.hidden_states[-1] * torch.unsqueeze(length_mask, dim=-1)
+        # print(result.shape)
+        if isinstance(inst, str):
+            result = torch.max(result[0], dim=0)
+        elif isinstance(inst, list):
+            result = torch.max(result, dim=1)
+        return result
+
+
+def main():
+    inst = ["mov ebp esp" for _ in range(8)]
+    print(generate_inst_vec(inst).shape)
+
+
+if __name__ == "__main__":
+    main()