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Balancing Efficiency and Accuracy in Duplicate Bug Report Detection using a Transformer-Based Hybrid Approach


Keskeiset käsitteet
A novel transformer-based system that combines retrieval and classification models to achieve a balanced trade-off between time efficiency and accuracy in detecting duplicate bug reports.
Tiivistelmä

The paper proposes a transformer-based framework for the task of Duplicate Bug Report Detection (DBRD) that integrates retrieval and classification models to strike a balance between efficiency and accuracy.

Key highlights:

  • Introduces a cluster-based dataset partition mechanism to address the issue of data leakage in previous studies.
  • Conducts a comprehensive comparison of transformer-based models (sentence BERT, BERT, ALBERT, RoBERTa) against baseline retrieval (GloVe, FastText) and classification (Bi-LSTM, DC-CNN) models.
  • The transformer-based retrieval model (sentence BERT) outperforms baseline retrieval models, while the transformer-based classification models (RoBERTa, BERT, ALBERT) outperform baseline classification models.
  • The proposed hybrid system leverages the strengths of both retrieval and classification, achieving comparable accuracy to the classification model while significantly outperforming it in time efficiency, and only slightly behind the retrieval model in time.
  • Evaluates the system's performance in two real-world scenarios (One vs All and All vs All) and demonstrates its ability to balance the trade-off between speed and accuracy.
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Tilastot
The average recall@100 of the sentence BERT retrieval model is 96.98%, outperforming GloVe (86.08%) and FastText (83.04%). The average F1 score of the RoBERTa classification model is 86.66%, outperforming Bi-LSTM (48.24%) and DC-CNN (76.60%). In the One vs All scenario, the proposed hybrid system achieves a recall of 92% and precision of 85% when k=100, compared to the classification model's recall of 92% and precision of 75%. In the All vs All scenario, the proposed hybrid system takes 1.2 seconds per bug on average, compared to 60 seconds for the classification model.
Lainaukset
"Our system makes a trade-off by sacrificing some running time in order to maintain robust performance in terms of recall, precision, and accuracy." "Selecting the appropriate value for k requires careful consideration. While a smaller k value may improve the time efficiency, it may also lead to a degradation in model performance. On the other hand, choosing a larger k value may result in increased time consumption."

Syvällisempiä Kysymyksiä

How can the proposed hybrid system be further optimized to reduce the memory footprint and computational requirements while maintaining the balance between efficiency and accuracy?

To optimize the hybrid system for reduced memory footprint and computational requirements, several strategies can be implemented: Model Compression: Utilize techniques like quantization, pruning, and distillation to reduce the size of the transformer models used in the system. This can significantly decrease memory usage while maintaining performance. Selective Attention Mechanisms: Implement selective attention mechanisms to focus computational resources on relevant parts of the input data, reducing the overall computational load. Batch Processing: Optimize batch processing techniques to efficiently handle multiple inputs simultaneously, reducing the number of computations required per inference. Model Parallelism: Explore model parallelism techniques to distribute the computational load across multiple devices or processors, improving efficiency without sacrificing accuracy. Dynamic Resource Allocation: Implement dynamic resource allocation strategies to allocate resources based on the complexity of the input data, optimizing performance based on real-time requirements. Hardware Acceleration: Utilize hardware accelerators like GPUs or TPUs to speed up computations and reduce the overall computational time, thereby improving efficiency. By implementing these optimization strategies, the hybrid system can achieve a balance between efficiency and accuracy while reducing memory footprint and computational requirements.

How can the system be extended to handle other types of software engineering tasks beyond duplicate bug report detection?

The system can be extended to handle various software engineering tasks by adapting the retrieval and classification components to suit the specific requirements of each task. Here are some ways to extend the system: Feature Engineering: Customize the feature extraction process to capture task-specific information relevant to the new software engineering task. This may involve domain-specific embeddings or additional data preprocessing steps. Task-Specific Models: Train task-specific retrieval and classification models using labeled data for the new task. Fine-tune existing transformer models or train new models from scratch to optimize performance. Multi-Task Learning: Implement multi-task learning techniques to simultaneously train the system on multiple software engineering tasks, leveraging shared representations to improve overall performance. Transfer Learning: Utilize transfer learning to adapt pre-trained models to new tasks, leveraging the knowledge learned from previous tasks to enhance performance on the new task. Feedback Mechanisms: Incorporate feedback mechanisms to continuously improve the system's performance on new tasks by learning from user interactions and task-specific feedback. By incorporating these strategies, the system can be extended to handle a wide range of software engineering tasks beyond duplicate bug report detection.

What other techniques or architectures could be explored to achieve a more seamless integration of retrieval and classification models for improved performance?

To achieve a more seamless integration of retrieval and classification models for improved performance, the following techniques and architectures could be explored: Joint Learning: Implement joint learning approaches that combine retrieval and classification objectives into a single optimization framework. This allows the models to learn from each other and improve overall performance. Attention Mechanisms: Utilize attention mechanisms to dynamically weigh the importance of information from both retrieval and classification components, enabling the system to focus on relevant features for each task. Hierarchical Models: Explore hierarchical models that hierarchically integrate retrieval and classification components, allowing for a more structured and efficient flow of information between the two tasks. Ensemble Methods: Combine multiple retrieval and classification models using ensemble methods to leverage the strengths of individual models and improve overall performance through model averaging or stacking. Reinforcement Learning: Incorporate reinforcement learning techniques to optimize the interaction between retrieval and classification components, allowing the system to adapt its behavior based on feedback and rewards. Graph Neural Networks: Utilize graph neural networks to model the relationships between bug reports and capture complex dependencies between them, enabling more effective integration of retrieval and classification tasks. By exploring these techniques and architectures, the system can achieve a more seamless integration of retrieval and classification models, leading to improved performance in software engineering tasks.
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