在完全连接计算之前，Caffe如何在Blob上隐式重塑？

Question

在进行完全连接计算之前，Caffe如何隐式地对Blob进行整形？

Answer 1

"InnerProduct" layer (aka "fully connected") has a axis: parameter that defines how caffe "flattens" the blob for the inner product.
You can see in inner_product_layer.cpp :

 // Dimensions starting from "axis" are "flattened" into a single // length K_ vector. For example, if bottom[0]'s shape is (N, C, H, W), // and axis == 1, N inner products with dimension CHW are performed. 

Since caffe stores Blobs contiguously in memory, no explicit reshape is needed for "flattening" the trailing dimensions of a blob.