Specifically, to address the issue of insensitivity to local context in the attention mechanism employed by the Transformer encoder, we introduce a position-sensitive self-attention (PSA) unit to enhance the model's ability to incorporate local context by attending to the positional relationships of ...
Moreover, unlike convolutional layer, self-attention layer does not utilize any positional information while computing the non-local context. Positional information is often useful in vision models to capture structure of an object. 因此,与卷积不同,自注意力机制能够从整个特征图中捕获非局部信息。 然而...
Axial-Attention 为了克服计算复杂度的问题,自注意力模块被分解为两个self-attention的modules,第一个modules在height axis上进行操作,第二个modules在width上进行操作。 具体而言,对于一个输入的特征图 x 而言,带有positional encoding的沿width的自注意力公式可以写为 在上面这个公式当中, w 表示对应的哪一行(width)...
positional bias can exert in the encoding of non-local context. With the proposed modification the self-attention mechanism applied on the width axis can be formally written as: yij=∑w=1Wsoftmax(qijTkiw+GQqijTriwq+GKkiwTriwk)(GV1...
The model employs an axial self-attention mechanism and gating units to capture the interactions between any two genes. It extracts global information without using positional information. By learning the interactions between genes and their expression patterns, each cell type can be mapped. Fig. 1 ...
In comparison, transformer [16] learns both temporal dependencies and inter-variable relations based on positional embedding and attention mechanism. It achieves state-of-the-art performance on several time-series datasets [48, 49] but suffers extended training time and overfitting on small datasets ...
It provides information on whether spatial location can be learned correctly for the positional bias term and controls the effect of the learned relative position encoding on the accuracy of encoding global context information. If a relative position code is accurately learned, the gating mechanism ...
The self-attention mechanism (SA) reallocates attention weights, allowing the model to focus on the critical moments when the sound source undergoes significant changes. Moreover, since both the relative position and orientation between the sound source and the listener in space vary simultaneously, ...