Model card: CodeBERT fine-tuned for Insecure Code Detection (#8247)

* Model card: CodeBERT fine-tuned for Insecure Code Detection

* Update model_cards/mrm8488/codebert-base-finetuned-detect-insecure-code/README.md
Co-authored-by: Julien Chaumond <chaumond@gmail.com>

model_cards/mrm8488/codebert-base-finetuned-detect-insecure-code/README.md

+---
+language: en
+datasets:
+- codexglue
+---
+
+# CodeBERT fine-tuned for Insecure Code Detection 💾⛔
+
+
+[codebert-base](https://huggingface.co/microsoft/codebert-base) fine-tuned on [CodeXGLUE -- Defect Detection](https://github.com/microsoft/CodeXGLUE/tree/main/Code-Code/Defect-detection) dataset for **Insecure Code Detection** downstream task.
+
+## Details of [CodeBERT](https://arxiv.org/abs/2002.08155)
+
+We present CodeBERT, a bimodal pre-trained model for programming language (PL) and nat-ural language (NL). CodeBERT learns general-purpose representations that support downstream NL-PL applications such as natural language codesearch, code documentation generation, etc. We develop CodeBERT with Transformer-based neural architecture, and train it with a hybrid objective function that incorporates the pre-training task of replaced token detection, which is to detect plausible alternatives sampled from generators. This enables us to utilize both bimodal data of NL-PL pairs and unimodal data, where the former provides input tokens for model training while the latter helps to learn better generators. We evaluate CodeBERT on two NL-PL applications by fine-tuning model parameters. Results show that CodeBERT achieves state-of-the-art performance on both natural language code search and code documentation generation tasks. Furthermore, to investigate what type of knowledge is learned in CodeBERT, we construct a dataset for NL-PL probing, and evaluate in a zero-shot setting where parameters of pre-trained models are fixed. Results show that CodeBERT performs better than previous pre-trained models on NL-PL probing.
+
+## Details of the downstream task (code classification) - Dataset 📚
+
+Given a source code, the task is to identify whether it is an insecure code that may attack software systems, such as resource leaks, use-after-free vulnerabilities and DoS attack.  We treat the task as binary classification (0/1), where 1 stands for insecure code and 0 for secure code.
+
+The [dataset](https://github.com/microsoft/CodeXGLUE/tree/main/Code-Code/Defect-detection) used comes from the paper [*Devign*: Effective Vulnerability Identification by Learning Comprehensive Program Semantics via Graph Neural Networks](http://papers.nips.cc/paper/9209-devign-effective-vulnerability-identification-by-learning-comprehensive-program-semantics-via-graph-neural-networks.pdf). All projects are combined and splitted 80%/10%/10% for training/dev/test.
+
+Data statistics of the dataset are shown in the below table:
+
+|       | #Examples |
+| ----- | :-------: |
+| Train |  21,854   |
+| Dev   |   2,732   |
+| Test  |   2,732   |
+
+## Test set metrics 🧾
+
+| Methods  |    ACC    |
+| -------- | :-------: |
+| BiLSTM   |   59.37   |
+| TextCNN  |   60.69   |
+| [RoBERTa](https://arxiv.org/pdf/1907.11692.pdf)  |   61.05   |
+| [CodeBERT](https://arxiv.org/pdf/2002.08155.pdf) | 62.08 |
+| [Ours](https://huggingface.co/mrm8488/codebert-base-finetuned-detect-insecure-code)  | **65.30** |
+
+
+## Model in Action 🚀
+
+```python
+from transformers import AutoTokenizer, AutoModelForSequenceClassification
+import torch
+import numpy as np
+tokenizer = AutoTokenizer.from_pretrained('mrm8488/codebert-base-finetuned-detect-insecure-code')
+model = AutoModelForSequenceClassification.from_pretrained('mrm8488/codebert-base-finetuned-detect-insecure-code', return_dict=True)
+
+inputs = tokenizer("your code here", return_tensors="pt", truncation=True, padding='max_length')
+labels = torch.tensor([1]).unsqueeze(0)  # Batch size 1
+outputs = model(**inputs, labels=labels)
+loss = outputs.loss
+logits = outputs.logits
+
+print(np.argmax(logits.detach().numpy()))
+```
+
+> Created by [Manuel Romero/@mrm8488](https://twitter.com/mrm8488) | [LinkedIn](https://www.linkedin.com/in/manuel-romero-cs/)
+
+> Made with <span style="color: #e25555;">&hearts;</span> in Spain