In recent years, deep neural networks have made significant advancements, surpassing traditional models in computer vision. However, the vast number of parameters in deep models poses challenges such as increased network size, sluggish computation, high computational costs, and extensive storage requirements, thus hindering deployment on resource-constrained platforms like mobile devices. This paper focuses on compressing convolutional neural networks to address these challenges. This paper proposes a structured pruning method that integrates MobileNet features to prune the MobileNetV3-Large model, resulting in a more compact and efficient model. The approach involves sparse regularization training to obtain a sparser network model, which is followed up by structured pruning. This pruning is performed by leveraging the product of the sparsity values of convolutional layers and the scaling factors of batch normalization layers to identify and remove redundant filters. Experiments were conducted on the CIFAR-10 dataset. The experimental results demonstrate that the proposed compression method effectively reduces model parameters, decreases model size, minimizes runtime memory usage, and diminishes computational operations, while maintaining comparable performance levels despite the compression. Specifically, for MobileNetV3-Large, the model's parameter count is reduced by 40%, and computational operations are reduced by 35%, all while maintaining the same level of accuracy.
Seismic velocity spectrum picking is an important task in seismic exploration. With the development of geological exploration technology, the data of seismic velocity spectrum has experienced explosive growth. Manual picking of seismic velocity spectrum alone gradually cannot meet the needs of practical production. In order to improve efficiency and reduce time costs, there is an urgent need to find a fast and effective method to achieve an automated velocity spectrum picking process. This paper proposes an intelligent picking method based on neural networks. The method abstracts the task of seismic velocity spectrum picking into a visual task, processes it, and outputs candidate boxes through model training. The center points of the candidate boxes are used as the "time-velocity" sequences of seismic velocity spectrum images. To improve the accuracy of model training, a YOLO-based improved YOLO-DCANet network is proposed. In the backbone stage, deformable convolutional modules are introduced, and a Coordinate Attention (CA) mechanism is integrated at different stages of the process. Meanwhile, to learn the features of energy clusters at different levels in the image, a multi-scale model is introduced to match energy cluster information at different levels. The experiments show that the mAP accuracy of the proposed YOLO-DCANET is improved by about 8% compared with the traditional two-stage model, and it’s also improved by about 5% compared with the original YOLO series model. It shows that the seismic velocity spectrum picking algorithm proposed in this paper is significantly improved compared with the traditional deep learning method. In addition, the generalization test on other working areas proves that the proposed method has strong generalization ability and robustness.
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